Carrier 38APD115 Manual Download Page 169

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169

At least one compressor in the circuit must be ON and one of

the following conditions must be true:

1. The circuit’s saturated suction temperature is less than

20 F (–6.7 C) for 4 minutes continuously,

2. The circuit’s saturated suction temperature is less than

10 F (–12.2 C) for 2 minutes continuously,

3. The circuit’s saturated suction temperature is less than

0° F (–17.8 C) for 1 minute continuously,

4. The circuit’s saturated suction temperature is less than

–20 F (–28.9 C) for 20 seconds continuously.

Action To Be Taken:

If the circuit contains more than one oper-

ating compressor and the operating conditions meet the criteria

above, one compressor in the affected circuit will be shut down

with an appropriate local alert (P120/P121) generated. This is a

non-broadcast alert/alarm. The alarm LED will not be lit, nor

will the pre-alert be broadcast on a network. A 15-minute time

guard will be added to the compressor. If the saturated suction

temperature continues to be less than the criteria listed above,

then another compressor will be shut down until the last com-

pressor on the circuit is shut down at which time the appropri-

ate alert or alarm will be issued (T120, T121, A120, A121).

If the circuit contains one operating compressor and the op-

erating conditions meet the criteria above, the affected circuit

will be shut down and the appropriate alert (T120, T121) gen-

erated. A 15-minute time guard will be added to the

compressor.

Reset Method:

The first two occurrences that a circuit is shut

down entirely due to this condition, an alert will be generated

(T120, T121) which keeps the circuit off for 15 minutes before

allowing the circuit to try again. The third time this occurs, an

alarm (A120, A121) will be generated which will necessitate a

manual reset to get the circuit back running.

To recover from these alerts, a 15-minute off timer must

elapse and the saturated suction temperature must rise above

29.32 F (–1.5 C). If recovery occurs, staging will be allowed on

the circuit again. Therefore, it is possible that multiple P120 or

P121 as well as T120 or T121 alerts may be stored in the alarm

history. If there are 1 or 2 strikes on the circuit and the circuit

recovers for a period of time, it is possible to clear out the

strikes thereby resetting the strike counter automatically. The

control must have saturated suction temperature greater than or

equal to 34 F (1.1 C) for 60 minutes in order to reset the strike

counters.

Possible Causes:

If this condition is encountered, check the

following items:

• Check to be sure that the circuit is properly charged. If a

leak is found, repair the leak and recharge the circuit.

• Check for proper air flow for the evaporator coil.

• If the alarms are occurring during cold ambient condi-

tions, consider installing Motormaster

head pressure

control.

• If wind baffles are required, check to see if they are

installed.

• Check the suction pressure transducer accuracy.

• Check for a low load condition (low return air tempera-

ture). Check the control system to see if the unit should

be operating.

• In control systems which rely on the supply air tempera-

ture:

- Check the accuracy of the supply air sensor.
- Check the supply air temperature sensor to be sure that it

is correctly sensing the mixed supply air temperature,

especially in a face split coil.

• Check for restrictions in the liquid line. Be sure all ser-

vice valves are open.

• Check the filter drier. Change the core(s) if necessary.

• Check the operation of the liquid line solenoid valves, if

equipped. Be sure that the correct valve operates for the

circuit.

• Be sure that the liquid line solenoid valve is installed cor-

rectly (flow), if equipped.

• For the circuit TXV(s):

- Check the superheat setting of the TXV. A very high set-

ting will cause low saturated suction condition.

- Check to be sure the proper TXV is installed.
- Check the operation of the TXV.
- Check the location of the TXV bulb and that it is properly

installed on the correct suction line.

- Check the TXV equalizer line to be sure that it is properly

connected to the correct suction line and open to suction

pressure.

• Check for a low airflow condition. Low airflow can

cause a low saturated suction condition.

• Check for dirty air filters causing an airflow restriction.

• Check the nozzle in the distributor to be sure it is correct.

• Check for a blocked or mis-circuited evaporator coil.
P122 - Circuit A High Pressure Switch Chattering Pre-Alert
P123 - Circuit B High Pressure Switch Chattering Pre-Alert
T122 - Circuit A High Pressure Switch Chattering
T123 - Circuit B High Pressure Switch Chattering

Criteria for Trip:

This alert has multiple criteria. The Main

Base Board (MBB) monitors the HPS. The 38AP units employ

one HPS for each circuit. For High Pressure Switch Chattering

Alert the following conditions must be true:

1. The circuit is ON or OFF.
2. The Main Base Board (MBB) detects a Closed-Open-

Closed-Open pattern of the high pressure switch circuit

within a 16-second window.

If all of the conditions listed above are true, a pre-alert

(P122/P123) will be generated for the first two occurrences.

This is a non-broadcast alert. The third occurrence will result in

the alert (T122/T123). If the circuit runs for 15 minutes with-

out tripping the pre-alert condition or if the circuit has cycled

three times, the strike counter is reset.

Action To Be Taken:

The circuit shuts down immediately or is

not allowed to start.

Reset Method:

The pre-alerts (P122/P123) will automatically

reset for the first two occurrences of this condition. After the

pre-alert is generated, there is a 15-minute time delay and the

high pressure switch must reset before the circuit will attempt

to restart. Following the second automatic reset of the pre-alert,

the next occurrence (T122/T123) will require a manual reset.

Possible Causes:

If this condition is encountered, check the

following items:

• Check the wiring of the high pressure switch circuit.

• Check the wiring of the liquid line solenoid valve, if

equipped. Be sure that the correct valve operates for the

circuit.

• Check for non-condensables in the refrigerant circuit.

• Check for condenser air re-circulation.

• Check for the proper refrigerant charge (overcharged).

• Check for operation beyond the limit of the machine.

• Check the condenser coils for debris or restriction.

• Check the evaporator coil for a refrigerant restriction.

• For the TXV(s) (thermostatic expansion valves):

- Check for the proper TXV. The 38AP units require bleed

port TXVs. Failure to use this type of valve may result in

high pressure switch trips at start-up.

- Check the TXV for proper operation.

• Check the condenser fans and motors for proper rotation

and operation.

• Check the liquid line service valve to be sure that it is

open.

Summary of Contents for 38APD115

Page 1: ...ATE BROADCAST DAYLIGHT SAVINGS TIME Control Methods 60 ENABLE OFF REMOTE CONTROL OCCUPANCY SCHEDULE CCN CONTROL Capacity Control 64 C TYP 1 VAV C TYP 3 TSTAT MULTI C TYP 4 TSTAT 2STG C TYP 5 SPT MULTI C TYP 7 PCT CAP Page C TYP 8 DUAL TSTAT C TYP 9 VAV SETPOINT CAPACITY CONTROL ALGORITHMS Field Configurable Controls 111 ALARM ROUTING COMPRESSOR STAGING DEADBAND MULTIPLIER DEMAND LIMIT DIGITAL COMP...

Page 2: ...15 Safety Code for Mechanical Refrigeration The accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation Provide adequate ventilation in enclosed or low overhead areas Inhalation of high concentrations of vapor is harmful and may cause heart irregularities unconsciousness or death Misuse can be fatal Vapor is heavier than air and reduces the amount of oxygen avai...

Page 3: ...gs by unit size CAUTION Puron refrigerant R 410A systems operate at higher pressures than standard R 22 systems Do not use R 22 ser vice equipment or components on Puron refrigerant equip ment If service equipment is not rated for Puron refrigerant equipment damage or personal injury may result CAUTION Refrigerant charge must be removed slowly to prevent loss of compressor oil that could result in...

Page 4: ...g 12 page 16 38APS050 Component Arrangement Fig 2 page 6 Power Wiring Schematic Fig 6 page 10 Control Wiring Schematic Fig 11 page 15 38APD050 Component Arrangement Fig 2 page 6 Power Wiring Schematic Fig 7 page 11 Control Wiring Schematic Fig 12 page 16 38APD060 Component Arrangement Fig 2 page 6 Power Wiring Schematic Fig 7 page 11 Control Wiring Schematic Fig 12 page 16 38APS065 Component Arran...

Page 5: ...ctor CCB Circuit Breaker CCHR Crankcase Heater Relay CSB Current Sensor Board EMM Energy Management Module EQUIP GND Equipment Ground FB Fuse Block FC Fan Contactor LON Local Operating Network MBB Main Base Board SW Switch TB Terminal Block TRAN Transformer UPC Unitary Protocol Converter ...

Page 6: ...r CCB Compressor Circuit Breaker CCH Crankcase Heater Relay CSB Current Sensor Board EMM Energy Management Module EQUIP GND Equipment Ground FC Fan Contactor FCB Fan Circuit Breaker LON Local Operating Network MBB Main Base Board MM Motormaster Controller SW Switch TB Terminal Block TRAN Transformer UPC Unitary Protocol Converter ...

Page 7: ...ker CCB Compressor Circuit Breaker CCH Crankcase Heater Relay CSB Current Sensor Board EMM Energy Management Module EQUIP GND Equipment Ground FC Fan Contactor FCB Fan Circuit Breaker LON Local Operating Network MBB Main Base Board SW Switch TB Terminal Block TRAN Transformer UPC Unitary Protocol Converter ...

Page 8: ...ressor Circuit Breaker CCH Crankcase Heater Relay CSB Current Sensor Board CXB Compressor Expansion Board EMM Energy Management Module EQUIP GND Equipment Ground FB Fuse Block FC Fan Contactor LON Local Operating Network MBB Main Base Board MM Motormaster Controller SW Switch TB Terminal Block TRAN Transformer UPC Unitary Protocol Converter ...

Page 9: ...9 a38 7409 Fig 5 Power Wiring Schematic 38APD APS025 030 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 10: ...10 a38 7410 Fig 6 Power Wiring Schematic 38APS040 050 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 11: ...11 a38 7411 Fig 7 Power Wiring Schematic 38APD040 060 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 12: ...12 17 16 16 a38 7414 Fig 8 Power Wiring Schematic 38APS065 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 13: ...13 a38 7412 Fig 9 Power Wiring Schematic 38APD070 100 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 14: ...14 a39 7413 Fig 10 Power Wiring Schematic 38APD115 130 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 15: ...15 a38 7417 Fig 11 Control Wiring Schematic 38APS025 050 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 16: ...16 a38 7415 Fig 12 Control Wiring Schematic 38APD025 060 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 17: ...17 a38 7418 Fig 13 Control Wiring Schematic 38APS065 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 18: ...18 a38 7416 Fig 14 Control Wiring Schematic 38APD070 130 Typical NOTE Typical drawing shown Refer to unit wiring diagram label for specific unit ...

Page 19: ... in the following units 38APD APS025 All units 38APD APS027 030 400 v 460 v units 38APS040 050 400 v 460 v units 38APD040 050 All units 38APD 060 400 v 460 v units 38APD070 100 400 v 460 v 38APD115 130 400 v 460 v units 11 MP B1 not used in the following units 38APD APS025 All units 38APD APS027 030 400 v 460 v units 38APD40 All units 38APD050 060 400 v 460 v units 38APD 070 All units 38APD080 100...

Page 20: ...ircuit amps up to 175 amps is 14 AWG American Wire Gage to 2 0 b Incoming wire size range for terminal block with MCA from 175 1 amps to 420 amps is 2 AWG to 600 kcmil c Incoming wire size range for non fused disconnect with MCA up to 100 amps is 14 AWG to 1 0 d Incoming wire size range for non fused disconnect with MCA from 100 1 amp to 200 amps is 6 AWG to 350 kcmil e Incoming wire size range fo...

Page 21: ... display to be moved around the condensing unit Magnets attached to the back of the display hold the display module to any sheet metal panel to allow hands free operation The dis play module has a NEMA National Electrical Manufacturers Association 4x housing suitable for use in outdoor environ ments and features a backlight and contrast adjustment for easy viewing in bright sunlight or night condi...

Page 22: ...uage Selection Changing the Units of Measure The factory de fault unit of measure is English for example F F psi The display can be changed to metric units for example C C kPa REQUIRED CONFIGURATIONS Table 4 shows the re quired configurations for Metric Display Table 4 METR Metric Display Required Configurations NOTE When the Metric Display Configura tionoDISPoMETR variable is changed all appropri...

Page 23: ...s boot ing If this pattern repeats it is an indication that the control board is in a continuous reboot loop and the board should be re placed When operating correctly the red status LEDs should be blinking in unison at a rate of once every 2 seconds If the red LEDs are not blinking in unison verify that correct power is being supplied to all modules Be sure that the main control is supplied with ...

Page 24: ...n accessory it pro vides the analog signal to the head pressure control device for fan speed determination See Fig 20 Addressing The board address is set by the DIP switch S1 as follows COMPRESSOR EXPANSION MODULE CXB The CXB is used only on unit sizes 070 130 to provide additional inputs and outputs for fans and compressors when the unit has more than 4 compressors Additionally if required refrig...

Page 25: ... J9 J1 CH9 CH10 CH11 CH12 JP2 C61 CH13 D12 JP1 L3 L5 U21 L2 D6 D5 Q5 Y1 D7 D8 S1 D3 U1 Q1 U5 U6 U7 U8 U9 Q10 Q11 U10 J4 J3 J2 U4 U2 Q12 Q60 3 2 1 G 3 2 1 G DIP SWITCH J5 J6 J7 J8 CEPL130567 03 32GB500 442 EE Fig 20 AUX Board J2 J1 J6 STATUS LEN LED LEN J3 LEN J4 STATUS CEBD430350 09 RA SST A LEN 1 2 3 4 S1 DIP SWITCH S1 Fig 21 Compressor Expansion Board CXB ...

Page 26: ...ntact can be used to start the unit The contacts must be capable of handling a 24 vac 50 mA load In the Enable and Remote Control dry contacts closed positions the unit is allowed to operate and re spond to the scheduling configuration CCN configuration and set point data See Fig 23 EMERGENCY ON OFF SWITCH The Emergency On Off switch should only be used when it is required to shut the unit off imm...

Page 27: ...TEMPERATURE THERMISTOR RAT Field See Table 9 on page 29 RETURN GAS TEMPERATURE THERMISTOR RGT Factory See Table 9 on page 29 SPACE TEMPERATURE THERMISTOR SPT Field See Table 9 on page 29 SUCTION PRESSURE TRANSDUCER A SPTA Factory MBB J7 SUCTION PRESSURE TRANSDUCER B SPTB Factory MBB J7 SUPPLY AIR TEMPERATURE THERMISTOR SAT Field See Table 9 on page 29 THERMOSTAT Y1 Y1 Field LVT 12 18 THERMOSTAT Y2...

Page 28: ...ZCSENSAT is required for certain control types discussed in the section Capacity Control beginning on page 64 The sensor is field installed in the indoor unit and wired to the low voltage terminal LVT of the unit to measure the air temperature entering the evaporator coil Sensor wiring should not be in conduit with other control voltages or errone ous or erratic readings may result The sensor shou...

Page 29: ... and 38APS065 only SAT Supply Air Temperature LVT 11 19 MBB J8 12 13 4 0 vdc T55 Space Temperature Thermistor LVT 21 22 MBB J8 9 6 4 0 vdc T56 Space Temperature Thermistor LVT 21 22 MBB J8 9 6 4 0 vdc Space Temperature Offset LVT 22 23 MBB J8 6 5 4 0 vdc DUCT SUPPLY SAT FS2 OR FS1 FAN EVAPORATOR COIL MAT RAT RETURN AIR OUTSIDE AIR LEGEND FS1 or FS2 can be pressure differential switch shown motor c...

Page 30: ...n averaging sensor Part No HH79NZ041 can be utilized to provide the supply air temperature to the 38AP controls See Fig 26 This sensor consists of 9 individual sensors wired within a 24 ft 7 3 m flexible copper tube Wiring to the device must be field sup plied Shielded 2 conductor 18 AWG twisted pair cabled is re quired The sensor temperature range is 40 to 245 F 40 to 118 C and is a Type II therm...

Page 31: ... is an 86 000 at 77 F 25 C thermistor connected to the AUX board see Table 9 Space Temperature Sensor T55 T56 Space temperature sensors are used to measure the interior temperature of a build ing Space Temperature can be forced to a value at the scrolling marquee or Navigator device To force the value access the parameter TemperaturesoUNIToSPT Press to view the current value Press again and use th...

Page 32: ... cable to the remainder of the CCN communication bus In lieu of a single sensor providing space temperature an aver aging sensor array of either 4 or 9 sensors may be employed to provide a space temperature as shown in Fig 32 With this control scheme only T55 space temperature sensors P N 33ZCT55SPT can be used Total sensor wiring must not exceed 1 000 ft 305 m Do not use T56 space temperature sen...

Page 33: ...E AVERAGING 4 SENSOR APPLICATION Fig 32 Space Temperature Averaging LEGEND Factory Wiring Field Wiring SPACE TEMPERATURE AVERAGING 9 SENSOR APPLICATION RGT A INSULATE WITH CORK INSULATION TAPE OAT DTT SPT A YEL DPT A RED HPS A Fig 33 38APS025 027 030 Sensor Locations LEGEND DPT Discharge Pressure Transducer DTT Discharge Temperature Thermistor OAT Outside Air Temperature Thermistor OFM Outdoor Fan...

Page 34: ...istor HPS High Pressure Switch OAT Outside Air Temperature Thermistor OFM Outdoor Fan Motor RGT Return Gas Thermistor SPT Suction Pressure Transducer RGT A INSULATE WITH CORK INSULATION TAPE HPSA DTT DPT A RED SPT A YEL OAT Fig 35 38APS040 050 Sensor Locations LEGEND DPT Discharge Pressure Transducer DTT Discharge Temperature Thermistor HPS High Pressure Switch OAT Outside Air Temperature Thermist...

Page 35: ...ressure Transducer DTT Discharge Temperature Thermistor HPS High Pressure Switch OAT Outside Air Temperature Thermistor RGT Return Gas Thermistor SPT Suction Pressure Transducer DPT B RED HPS B RGT B INSULATE WITH CORK INSULATION TAPE SPT B YEL Fig 37 38APS065 Sensor Locations LEGEND NOTE For OAT location see Fig 44 DPT Discharge Pressure Transducer RGT Return Gas Thermistor SPT Suction Pressure T...

Page 36: ...ge Temperature Thermistor HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer RGT B INSULATE WITH CORK INSULATION TAPE HPS B DPT B RED SPT B YEL Fig 39 38APD070 Sensor Locations Circuit B LEGEND NOTE For OAT location see Fig 44 DPT Discharge Pressure Transducer HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer ...

Page 37: ...emperature Thermistor HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer RGT B INSULATE WITH CORK INSULATION TAPE SPT B YEL DPT B RED HPS B Fig 41 38APD080 090 100 Sensor Locations Circuit B LEGEND NOTE For OAT location see Fig 44 DPT Discharge Pressure Transducer HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer ...

Page 38: ... Temperature Thermistor HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer RGT B INSULATE WITH CORK INSULATION TAPE HPS B DPT B RED SPT B YEL Fig 43 38APD115 130 Sensor Locations Circuit B LEGEND NOTE For OAT location see Fig 44 DPT Discharge Pressure Transducer HPS High Pressure Switch RGT Return Gas Thermistor SPT Suction Pressure Transducer ...

Page 39: ...ressure Transducer DTT HARNESS TO CONTROL BOX DISCHARGE TUBE DETAIL DTT WRAP ENTIRE SENSOR WATER TIGHT Fig 45 Discharge Temperature Thermistor DTT Mounting TO CONTROL BOX DETAIL OAT COMPRESSOR RAIL RAIL WIRE TIE 2 THERMISTOR MOUNTING BRACKET 0 5 in 13 mm NOTE SECURE OAT WITH TWO TIES INSERT ASSEMBLY INTO BASE HOLE AND SECURE WITH SCREW Fig 46 Outdoor Air Temperature OAT Thermistor Mounting 38AP025...

Page 40: ...not attempt to start the air conditioning system until the following checks have been completed System Check 1 Check all system components for proper operation in cluding the air handling equipment Consult manufactur er s instructions If the unit has field installed accessories be sure all are properly installed and wired correctly Re fer to unit wiring diagrams 2 Open liquid line and suction line...

Page 41: ...O Be sure to re enable the digital operation after charging operation is complete If charging at low out door ambient the condenser coil can be partially blocked in order to increase head pressure NOTE Do not use recycled refrigerant as it may contain contaminants IMPORTANT Before beginning Pre Start Up or Start Up review Start Up Checklist at the back of this publication The checklist assures pro...

Page 42: ...striction could exist in the liquid line Check for a plugged filter drier or partially open solenoid valve Replace or repair as needed After full load charging is complete check the circuit super heat entering the compressors downstream of the accumulator at part load conditions to ensure that superheat is greater than 5 F 2 8 C If superheat is less than 5 F 2 8 C further field action to increase ...

Page 43: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7170 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit A or B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE...

Page 44: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7172 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit A or B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE...

Page 45: ...ompressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7174 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 40 SST 30 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit A 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag 50...

Page 46: ...ging charts LEGEND SST Saturated Suction Temperature a38 7176 90 0 100 0 110 0 120 0 130 0 50 40 30 RATURE AT LIQUID VALVE DEG C RATURE AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE REDUCE CHARGE IF BELOW CURVE 50 SST 40 SST 30 SST 60 0 70 0 80 0 90 0 100 0 110 0 120 0 130 0 200 0 250 0 300 0 350 0 400 0 450 0 500 0 550 0 600 0 LIQUID PRESSURE AT LIQUID VALVE PSIG Single Circuit 1500 2000 2500 3...

Page 47: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7178 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 48: ...charts LEGEND SST Saturated Suction Temperature a38 7180 90 0 100 0 110 0 120 0 130 0 50 40 30 RATURE AT LIQUID VALVE DEG C RATURE AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE REDUCE CHARGE IF BELOW CURVE 50 SST 30 SST 40 SST 60 0 70 0 80 0 90 0 100 0 110 0 120 0 130 0 200 0 250 0 300 0 350 0 400 0 450 0 500 0 550 0 600 0 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit A 1500 2000 2500 3000 3500 4...

Page 49: ...plete Ensure that all fans are on and all compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7182 90 100 110 120 130 Circuit B 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG 1500 2000 2500 3000 3500 4...

Page 50: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7183 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 51: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7185 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 52: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7187 90 100 110 120 130 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG Circuit B 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 53: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7189 90 100 110 120 130 Circuit B 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 54: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7189 90 100 110 120 130 Circuit B 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 55: ...l compressors are running when using charging charts LEGEND SST Saturated Suction Temperature a38 7189 90 100 110 120 130 Circuit B 50 40 E AT LIQUID VALVE DEG C E AT LIQUID VALVE DEG F ADD CHARGE IF ABOVE CURVE 50 SST 30 SST 40 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE PSIG 1500 2000 2500 3000 3500 4000 LIQUID PRESSURE AT LIQUID VALVE kPag...

Page 56: ...ual Circuit Units LLS Liquid Line Solenoid TXV Thermostatic Expansion Valve a38 7117 Field supplied Field supplied when required Must be controlled by 38AP unit control Fig 78 Required Location of Solenoid Valves and Recommended Filter Drier and Sight Glass Locations for 38APS025 050 065 Single Circuit Units SECTION 1 SECTION 1 SECTION 2 SECTION 2 SOLENOID VALVE SOLENOID VALVE LIQUID LINE LIQUID L...

Page 57: ...glass The compressor oil level should be checked with the compres sor off to avoid the sump turbulence when the compressor is running Oil must be added if the oil level does not meet the requirements Table 12 38AP 60 Hz Additional Lubricant English IMPORTANT Oil level should only be checked when the compressors are off UNIT SIZE CIRCUIT ADDITIONAL LUBRICANT FLUID OUNCES ESTIMATE FOR PIPING LENGTH ...

Page 58: ...817 1010 1107 1476 1641 1805 1970 2135 38APD100 A 852 1046 1142 1511 1676 1841 2006 2170 B 817 1010 1107 1476 1641 1805 1970 2135 38APD115 A 817 1010 1107 1476 1641 1805 1970 2135 B 977 1306 1471 1636 1801 1965 2130 2984 38APD130 A 817 1010 1107 1476 1641 1805 1970 2135 B 1261 1590 1755 1920 2085 2767 3017 3268 UNIT SIZE CIRCUIT ADDITIONAL LUBRICANT FLUID OUNCES ESTIMATE FOR PIPING LENGTH AND REFR...

Page 59: ...ontrols have the ability to automatically adjust the time for daylight savings time To utilize this feature several items must be configured including a start date and time to add as well as an end date All items are found in the Daylight Saving Time sub mode Time ClockoDST and the Broadcast sub mode Configura tionoBCST See Table 19 for required configurations NOTE Only the time and date broadcast...

Page 60: ...BMODE ITEM DISPLAY ITEM DESCRIPTION COMMENT TIME HH MM XX XX Hour and Minute 24 hour format Range 00 00 to 23 59 TIME CLOCK MODE SUBMODE ITEM DISPLAY ITEM DESCRIPTION COMMENT DATE MNTH XX Month of Year Range 1 12 1 January 2 February etc DOM XX Day of Month Range 1 31 DAY X Day of Week Range 1 7 1 Monday 2 Tuesday etc YEAR XXXX Year of Century CONFIGURATION MODE SUBMODE ITEM DISPLAY ITEM DESCRIPTI...

Page 61: ...ocal schedules HD 01 through HD 30 Each holiday requires a Holiday Month Time ClockoHOL LoHD xxoMON Holiday Start Month where xx is a number from 01 to 30 the Holiday Start Day of Month Time ClockoHOL LoHD xxoDAY Start Day where xx is a number from 01 to 30 and the Holiday Dura tion Time ClockoHOL LoHD xxoLEN Duration Days where xx is a number from 1 to 99 Holidays that do not oc cur on fixed date...

Page 62: ... NO Friday in Period Default NO Example YES SAT 1 YES NO Saturday in Period Default NO Example NO SUN 1 YES NO Sunday in Period Default NO Example NO HOL 1 YES NO Holiday in Period Default NO Example NO PER 2 OCC 2 XX XX Period Occupied Time Default 00 00 Range 00 00 23 59 Example 06 00 UNC 2 XX XX Period Unoccupied Time Default 00 00 Range 00 00 23 59 Example 12 00 MON 2 YES NO Monday in Period D...

Page 63: ...ires after each initiation Timed Override from Scrolling Marquee Navigator Device A timed override period can be initiated with the unit s inter face device To initiate an override period from the unit s inter face device the number of hours requested must be set in Time Clocko OVRoOVR T Timed Override Hours See Table 23 Once a non zero value has been entered the unit will re sume an occupied peri...

Page 64: ...lti is used and the space temperature is sat isfied the Control Mode 9 SPT Satisfied will be displayed Units controlled via communications by a separate third party building automation system through a translator or UPC Open Controller must be set to CCN Control CTRL 3 If the unit is to be monitored only via communications CTRL 3 CCN Control is not required Emergency Stop A controls feature exists...

Page 65: ...ts an additional LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied control transformer is required not to exceed 75 VA 5 All discrete inputs are 24 VAC 6 Installation of fan status switch FS1 is recommended If not used a jumper must be installed 7 Energy management module EMM is required for Demand Limit functions 4 to 20 mA Demand Limit Step 1 and 2 or 4 to 20 mA T...

Page 66: ...ure Control on page 117 As part of normal operation if a single compressor in a mul tiple compressor circuit 38APD040 130 operates for the cu mulative time of 60 minutes without an increase in circuit ca pacity an oil recovery routine is initiated When this routine is initiated a second compressor in the circuit is started Once started the normal capacity control routine takes priority and will tu...

Page 67: ...ault differential is acceptable but the application may require a smaller or larger difference For example a face split coil may a larger differential CSP 1 should be set to a value that allows the unit to operate without rapid cycling CSP 1 should be greater than CSP 2 to allow the unit to produce a lower supply air temperature when Y2 is made if the unit has the available capacity Wiring See Fig...

Page 68: ...r 38APD070 130 units an additional LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied control transformer is required not to exceed 75 VA 5 All discrete inputs are 24 VAC 6 Installation of fan status switch FS1 is recommended If not used a jumper must be installed 7 Energy management module EMM is required for Demand Limit functions 4 to 20 mA Demand Limit Step 1 and...

Page 69: ...last stage of capacity 38APS Units On a call for cooling the Indoor Fan Status Cir A InputsoGEN IoID F A is checked The switch must be closed before the capacity routine will start The lead com pressor will be determined and started See Circuit Compressor Staging on page 112 If the lead compressor is a digital com pressor and is enabled the compressor will start fully loaded for 90 seconds prior t...

Page 70: ...control transformer is required not to exceed 75 VA 5 All discrete inputs are 24 VAC 6 Installation of fan status switch FS1 is recommended If not used a jumper must be installed 7 Energy management module EMM is required for Demand Limit functions 4 to 20 mA Demand Limit Step 1 and 2 or 4 to 20 mA Temperature Reset 8 This control scheme is valid for 38APD APS025 027 and 030 It is not recom mended...

Page 71: ...nit s ca pacity by removing compressors The first compressor will turn off between 30 and 60 seconds following the loss of the Y2 signal The remaining compressors will turn off in 90 sec ond intervals until the unit is as close as possible to 50 capac ity without exceeding it Finally as the Y1 contact opens the remaining capacity is removed immediately 38APS Units On a call for cooling Y1 closure ...

Page 72: ...ure CSP 1 will depend on the application The difference between the default values for CSP 1 and CSP 2 is 5 F 2 8 C In most cases the default differential is acceptable but the application may require a smaller or larger difference For example a face split coil may require a larger differential CSP 1 should be set to a value that allows the unit to operate without rapid cycling CSP 1 should be gre...

Page 73: ...nal LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied control transformer is required not to exceed 75 VA 5 All discrete inputs are 24 VAC 6 Installation of fan status switch FS1 is recommended If not used a jumper must be installed 7 Energy management module EMM is required for Demand Limit functions 4 to 20 mA Demand Limit Step 1 and 2 or 4 to 20 mA Temperature Re...

Page 74: ... Temperature rises above SPS P L C ON H C ON the unit will change the Control Point to CSP 2 Space Temperature Control Mode SPT M will indicate 2 Hi Cool CSP 2 will remain the Control Point until the Space Temperature falls below SPS P L C ON L C OF 2 at which time the Control Point will change to CSP 1 CSP 1 will remain the Control Point until the Space Temperature falls be low SPS P L C ON L C O...

Page 75: ...ompressor if needed As the capacity requirement begins to decrease the ma chine controls will reduce the unit s capacity to maintain the Control Point If the unit is equipped with Minimum Load Control it will not be active until the unit is on its last stage of capacity 38APS On a call for cooling the Indoor Fan Status Cir A InputsoGEN IoID F A is checked The switch must be closed before the capac...

Page 76: ...rm relay The maximum load allowed for the alarm relay is 5 VA sealed 10 VA at 24 VAC Field power supply is not required 3 LVT 24 25 and 2 are for control of field supplied liquid line solenoid valve LLSV 15 VA sealed 30 VA inrush at 24 VAC Field power supply is not required 4 For 38APD070 130 units an additional LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied cont...

Page 77: ...e on page 135 In this Control Type Space Temp Control Mode Run StatusoVIEWoSPT M 0 Off Cool as long as Run StatusoVIEWoSTAT 1 Off Local 2 Off CCN 3 Off Time or 4 Off Emrgcy SPT M 3 Cool On as long as Control Mode STAT 5 On Local 6 On CCN or 7 On Time In this Control Type if the Indoor Fan Status Switch opens InputsoGEN IoID F A OFF Control Mode STAT will change to 8 IDFS Not On as long as there is...

Page 78: ...e compressor unload time from 8 to 2 seconds that change will occur without the intermediate steps of 7 6 5 4 and 3 seconds During operation the controls will stage the condens er fans to maintain head pressure See Head Pressure Control on page 117 As part of normal operation if a single compressor operates for the cumulative time of 60 minutes without an increase in circuit capacity an oil recove...

Page 79: ...pacity Loading C TYP 7 38APD APS025 030 Digital Equal Default or Staged Circuit Loading Circuit A 38APD Only Leads a38 7349 Fig 89 Capacity Loading C TYP 7 38APD040 Non Digital Equal Default Circuit Loading Circuit A Leads ...

Page 80: ... 7350 Fig 90 Capacity Loading C TYP 7 38APD040 Non Digital Equal Default Circuit Loading Circuit B Leads a38 7351 Fig 91 Capacity Loading C TYP 7 38APD040 Digital Equal Default Circuit Loading Circuit A Leads ...

Page 81: ...1 a38 7352 Fig 92 Capacity Loading C TYP 7 38APD040 Non Digital Staged Circuit Loading Circuit A Leads a38 7353 Fig 93 Capacity Loading C TYP 7 38APD040 Non Digital Staged Circuit Loading Circuit B Leads ...

Page 82: ...a38 7354 Fig 94 Capacity Loading C TYP 7 38APD040 Digital Staged Circuit Loading Circuit A Leads a38 7355 Fig 95 Capacity Loading C TYP 7 38APD050 Non Digital Equal Default Circuit Loading Circuit A Leads ...

Page 83: ... 7356 Fig 96 Capacity Loading C TYP 7 38APD050 Non Digital Equal Default Circuit Loading Circuit B Leads a38 7357 Fig 97 Capacity Loading C TYP 7 38APD050 Digital Equal Default Circuit Loading Circuit A Leads ...

Page 84: ...4 a38 7358 Fig 98 Capacity Loading C TYP 7 38APD050 Non Digital Staged Circuit Loading Circuit A Leads a38 7359 Fig 99 Capacity Loading C TYP 7 38APD050 Non Digital Staged Circuit Loading Circuit B Leads ...

Page 85: ...38 7360 Fig 100 Capacity Loading C TYP 7 38APD050 Digital Staged Circuit Loading Circuit A Leads a38 7361 Fig 101 Capacity Loading C TYP 7 38APD060 Non Digital Equal Default Circuit Loading Circuit A Leads ...

Page 86: ...7362 Fig 102 Capacity Loading C TYP 7 38APD060 Non Digital Equal Default Circuit Loading Circuit B Leads a38 7363 Fig 103 Capacity Loading C TYP 7 38APD060 Digital Equal Default Circuit Loading Circuit A Leads ...

Page 87: ... a38 7364 Fig 104 Capacity Loading C TYP 7 38APD060 Non Digital Staged Circuit Loading Circuit A Leads a38 7365 Fig 105 Capacity Loading C TYP 7 38APD060 Non Digital Staged Circuit Loading Circuit B Leads ...

Page 88: ...38 7366 Fig 106 Capacity Loading C TYP 7 38APD060 Digital Staged Circuit Loading Circuit A Leads a38 7367 Fig 107 Capacity Loading C TYP 7 38APD070 Non Digital Equal Default Circuit Loading Circuit A Leads ...

Page 89: ...7368 Fig 108 Capacity Loading C TYP 7 38APD070 Non Digital Equal Default Circuit Loading Circuit B Leads a38 7369 Fig 109 Capacity Loading C TYP 7 38APD070 Digital Equal Default Circuit Loading Circuit A Leads ...

Page 90: ... A38 7370 Fig 110 Capacity Loading C TYP 7 38APD070 Non Digital Staged Circuit Loading Circuit A Leads a38 7371 Fig 111 Capacity Loading C TYP 7 38APD070 Non Digital Staged Circuit Loading Circuit B Leads ...

Page 91: ...38 7372 Fig 112 Capacity Loading C TYP 7 38APD070 Digital Staged Circuit Loading Circuit A Leads A38 7373 Fig 113 Capacity Loading C TYP 7 38APD080 Non Digital Equal Default Circuit Loading Circuit A Leads ...

Page 92: ...Fig 114 Capacity Loading C TYP 7 38APD080 Non Digital Equal Default Circuit Loading Circuit B Leads a38 7375 Fig 115 Capacity Loading C TYP 7 38APD080 Digital Equal Default or Staged Circuit Loading Circuit A Leads ...

Page 93: ... a38 7376 Fig 116 Capacity Loading C TYP 7 38APD080 Non Digital Staged Circuit Loading Circuit A Leads a38 7377 Fig 117 Capacity Loading C TYP 7 38APD080 Non Digital Staged Circuit Loading Circuit B Leads ...

Page 94: ...78 Fig 118 Capacity Loading C TYP 7 38APD090 Non Digital Equal Default Circuit Loading Circuit A Leads a38 7379 Fig 119 Capacity Loading C TYP 7 38APD090 Non Digital Equal Default Circuit Loading Circuit B Leads ...

Page 95: ...38 7380 Fig 120 Capacity Loading C TYP 7 38APD090 Digital Equal Default Circuit Loading Circuit A Leads a38 7381 Fig 121 Capacity Loading C TYP 7 38APD090 Non Digital Staged Circuit Loading Circuit A Leads ...

Page 96: ...96 a38 7382 Fig 122 Capacity Loading C TYP 7 38APD090 Non Digital Staged Circuit Loading Circuit B Leads a38 7383 Fig 123 Capacity Loading C TYP 7 38APD090 Digital Staged Circuit Loading Circuit A Leads ...

Page 97: ...Capacity Loading C TYP 7 38APD100 Non Digital Equal Default or Staged Circuit Loading Circuit A or B Leads a38 7385 Fig 125 Capacity Loading C TYP 7 38APD100 Digital Equal Default or Staged Circuit Loading Circuit A Leads ...

Page 98: ...86 Fig 126 Capacity Loading C TYP 7 38APD115 Non Digital Equal Default Circuit Loading Circuit A Leads a38 7387 Fig 127 Capacity Loading C TYP 7 38APD115 Non Digital Equal Default Circuit Loading Circuit B Leads ...

Page 99: ...38 7388 Fig 128 Capacity Loading C TYP 7 38APD115 Digital Equal Default Circuit Loading Circuit A Leads a38 7389 Fig 129 Capacity Loading C TYP 7 38APD115 Non Digital Staged Circuit Loading Circuit A Leads ...

Page 100: ...00 a38 7390 Fig 130 Capacity Loading C TYP 7 38APD115 Non Digital Staged Circuit Loading Circuit B Leads a38 7391 Fig 131 Capacity Loading C TYP 7 38APD115 Digital Staged Circuit Loading Circuit A Leads ...

Page 101: ...92 Fig 132 Capacity Loading C TYP 7 38APD130 Non Digital Equal Default Circuit Loading Circuit A Leads a38 7393 Fig 133 Capacity Loading C TYP 7 38APD130 Non Digital Equal Default Circuit Loading Circuit B Leads ...

Page 102: ...a38 7394 Fig 134 Capacity Loading C TYP 7 38APD130 Digital Equal Default Circuit Loading Circuit A Leads a38 7395 Fig 135 Capacity Loading C TYP 7 38APD130 Non Digital Staged Circuit Loading Circuit A Leads ...

Page 103: ...03 a38 7396 Fig 136 Capacity Loading C TYP 7 38APD130 Non Digital Staged Circuit Loading Circuit B Leads a38 7397 Fig 137 Capacity Loading C TYP 7 38APD130 Digital Staged Circuit Loading Circuit A Leads ...

Page 104: ...g C TYP 7 38APS040 065 Non Digital Equal Default or Staged Circuit Loading Circuit A Leads 38APS040 050 Circuit B Leads 38APS065 a38 7399 Fig 139 Capacity Loading C TYP 7 38APS040 050 Digital Equal Default Circuit Loading Circuit A Leads ...

Page 105: ...nored for all compressors For specific information on Time Guard see MDTG Time Guard Active on page 135 In this Control Type Space Temp Control Mode Run StatusoVIEWoSPT M 0 Off Cool as long as Control Mode Run StatusoVIEWoSTAT 1 Off Local 2 Off CCN 3 Off Time or 4 Off Emrgcy When the Control Mode STAT 5 On Local 6 On CCN or 7 On Time SPT M 1 Lo Cool if Y1 InputsoGEN IoY 1 ON or Y3 Inputso GEN IoY ...

Page 106: ...sh at 24 VAC Field power supply is not required 5 For 38APD070 130 units an additional LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied control transformer is required not to exceed 75 VA 6 All discrete inputs are 24 VAC 7 Installation of fan status switches FS1 FS2 is recommended If not used a jumper must be installed 8 Energy management module EMM is required 9 T...

Page 107: ...7 C as the basis for the Active Set Point Run StatusoVIEWoSETP With the loss of the field supplied signal the Active Setpoint will change to Cool ing Set Point 1 Set PointsoCOOLoCSP 1 See Fig 142 and 143 The Control Point Run StatusoVIEWoCTPT is the Ac tive Set Point SETP or Cooling Set Point 1 CSP 1 adjusted for any temperature reset that is applied See Temperature Re set on page 129 for addition...

Page 108: ...etermined and started See Circuit Compres sor Staging on page 112 If the lead compressor is a digital compressor and is enabled the compressor will start fully loaded for 90 seconds prior to starting to cycle between loaded and unloaded Compressors will be staged until the unit s sup ply air temperature meets the Control Point CTPT as described in Supply Air Temperature Control on page 110 During ...

Page 109: ...sealed 30 VA inrush at 24 VAC Field power supply is not required 4 For 38APD070 130 units an additional LLSV 15 VA sealed 30 VA inrush at 24 VAC can be connected to CXB A field supplied control transformer is required not to exceed 75 VA 5 All discrete inputs are 24 VAC 6 Installation of fan status switch FS1 is recommended If not used a jumper must be installed 7 Energy management module EMM is r...

Page 110: ...vice Return Air Temperature TemperaturesoUNIToRAT and Supply Air Temperature TemperaturesoUNIToSAT With this information a capacity ratio is calculated to determine whether to make any changes to the current stage of capacity This ratio Capacity Load Unload Factor Run Sta tusoVIEWoLOD F value ranges from 100 to 100 times Deadband Multiplier ConfigurationoSLCToZ GN See Deadband Multiplier on page 1...

Page 111: ...vice Tool only It cannot be modified with the scrolling marquee or Navigator display Typical configuration of the Alarm Routing variable is 11010000 This Alarm Routing status will transmit alarms to ComfortVIEW software TeLink BAClink and DataLINK Alarm routing is not supported with the LON Translator Alarm Equipment Priority The ComfortVIEW software uses the equipment priority value to determine ...

Page 112: ... is configurable as equal circuit loading or staged circuit loading with the default set at equal ConfigurationoOPT2oLOAD 1 The control determines the order in which the steps of capacity for each circuit are changed Set to equal the unit will alternate starting compressors in each circuit as the requirement increases Set to staged ConfigurationoOPT2oLOAD 2 one circuit will load completely before ...

Page 113: ... A1 A2 B1 B2 80 A1 A2 B1 B2 5 100 A1 A2 B1 B2 B3 100 A1 A2 B1 B2 B3 38APD090 1 16 A1 18 B1 2 33 A1 B1 33 A1 B1 3 49 A1 A2 B1 51 A1 B1 B2 4 67 A1 A2 B1 B2 67 A1 A2 B1 B2 5 82 A1 A2 A3 B1 B2 85 A1 A2 B1 B2 B3 6 100 A1 A2 A3 B1 B2 B3 100 A1 A2 A3 B1 B2 B3 38APD100 1 17 A1 17 B1 2 33 A1 B1 33 A1 B1 3 50 A1 A2 B1 50 A1 B1 B2 4 67 A1 A2 B1 B2 67 A1 A2 B1 B2 5 83 A1 A2 A3 B1 B2 83 A1 A2 B1 B2 B3 6 100 A1...

Page 114: ...0 A1 A2 B1 B2 80 A1 A2 B1 B2 5 100 A1 A2 B1 B2 B3 100 A1 A2 B1 B2 B3 38APD090 1 16 A1 18 B1 2 31 A1 A2 36 B1 B2 3 46 A1 A2 A3 54 B1 B2 B3 4 64 A1 A2 A3 B1 69 A1 B1 B2 B3 5 82 A1 A2 A3 B1 B2 85 A1 A2 B1 B2 B3 6 100 A1 A2 A3 B1 B2 B3 100 A1 A2 A3 B1 B2 B3 38APD100 1 17 A1 17 B1 2 33 A1 A2 33 B1 B2 3 50 A1 A2 A3 50 B1 B2 B3 4 67 A1 A2 A3 B1 67 A1 B1 B2 B3 5 83 A1 A2 A3 B1 B2 83 A1 A2 B1 B2 B3 6 100 A...

Page 115: ...CN loadshed module and has the ability to limit the current operating capaci ty to maximum and further reduce the capacity if required The fourth type utilizes communications to write directly to the de mand limit point NOTE The 2 stage switch control and 4 to 20 mA input signal types of demand limiting require the energy management mod ule EMM To use demand limit select the type of demand limitin...

Page 116: ... Demand Limit of 0 Between DMND 4 mA and DMND 20 mA a proportional demand limit amount will be applied to the machine Table 42 Configuring 4 to 20 mA Demand Limit CAUTION To avoid unit damage care should be taken when interfac ing with other manufacturer s control systems due to power supply differences full wave bridge versus half wave rectification The two different power supplies cannot be mixe...

Page 117: ...ing at 50 capacity If the DUS is energized for 11 seconds the compressor will be operating at approxi mately 25 of its capacity Capacity is the time averaged sum mation of loaded and unloaded states and its range is continuous from 10 to 100 Regardless of capacity the compressor always rotates with constant speed As the com pressor transitions from a loaded to unloaded state the dis charge and suc...

Page 118: ...the current fan stage F ON will be updated for the required time A fan stage will decrease if the circuit s SCT is less than F OFF for 2 minutes 38APD080 130 The 38APD080 130 units have some fans that are common between both circuits and some that are con trolled by each circuit individually Initial fan stages are circuit specific fans and are controlled by the circuit s SCT When the circuit SCT i...

Page 119: ... B 38APD 1 FAN1 FC1 OFM3 2 FAN1 FAN2 FC1 FC2 OFM3 OFM1 OFM2 CONTROL BOX OFM1 OFM2 OFM3 UNIT OPERATING CIRCUIT FAN STAGE OUTPUT POINT NAME CONTACTOR FANS ENERGIZED 38APD060 Without Motormaster Controller A or B 1 FAN1 FC1 OFM3 2 FAN1 FAN2 FC1 FC2 OFM3 OFM1 OFM2 3 FAN1 FAN3 FC1 FC3 OFM3 OFM4 4 FAN1 FAN2 FAN3 FC1 FC2 FC3 OFM3 OFM1 OFM2 OFM4 38APD060 With Motormaster Controller A or B 1 FAN1 FC1 OFM3 ...

Page 120: ...N2 FAN4 FC2 FC4 OFM1 OFM2 2 FAN1 FC1 OFM3 3 FAN1 FAN3 FC1 FC3 OFM3 OFM4 B 1 FAN1 FAN3 FC1 FC3 OFM3 OFM4 2 FAN2 FC2 OFM1 3 FAN2 FAN4 FC2 FC4 OFM1 OFM2 A and B 1 2 FAN1 FAN2 FC1 FC2 OFM3 OFM1 3 FAN1 FAN2 FAN3 FAN4 FC1 FC2 FC3 FC4 OFM3 OFM1 OFM4 OFM2 CONTROL BOX OFM1 OFM2 OFM3 OFM4 CKT A CKT B UNIT OPERATING CIRCUIT FAN STAGE OUTPUT POINT NAME CONTACTOR FANS ENERGIZED 38APD080 With or Without Motorma...

Page 121: ... FAN3 FC1 FC3 OFM5 OFM2 OFM4 OFM6 6 FAN1 FAN3 FAN4 FC1 FC3 FC4 OFM5 OFM2 OFM4 OFM6 OFM3 B 1 FAN4 FC4 OFM3 2 FAN2 FC2 OFM1 3 FAN2 FAN4 FC2 FC4 OFM1 OFM3 4 FAN3 FAN4 FC3 FC4 OFM2 OFM4 OFM6 OFM3 5 FAN2 FAN3 FC2 FC3 OFM1 OFM2 OFM4 OFM6 6 FAN2 FAN3 FAN4 FC2 FC3 FC4 OFM1 OFM2 OFM4 OFM6 OFM3 A and B 1 FAN4 FC4 OFM3 2 FAN1 FAN2 FC2 FC4 OFM1 OFM3 3 FAN3 FC3 OFM2 OFM4 OFM6 4 FAN3 FAN4 FC3 FC4 OFM2 OFM4 OFM6...

Page 122: ...FC4 OFM5 OFM3 3 FAN1 FAN3 FC1 FC3 OFM5 OFM2 OFM4 OFM6 4 FAN1 FAN3 FAN4 FC1 FC3 FC4 OFM5 OFM2 OFM4 OFM6 OFM3 B 1 FAN2 FC2 OFM1 2 FAN2 FAN4 FC2 FC4 OFM1 OFM3 3 FAN2 FAN3 FC2 FC3 OFM1 OFM2 OFM4 OFM6 4 FAN2 FAN3 FAN4 FC2 FC3 FC4 OFM1 OFM2 OFM4 OFM6 OFM3 A and B 1 FAN1 FAN2 FC1 FC2 OFM5 OFM1 2 FAN1 FAN2 FAN4 FC1 FC2 FC4 OFM5 OFM1 OFM3 3 FAN1 FAN2 FAN3 FC1 FC2 FC3 OFM5 OFM1 OFM2 OFM4 OFM6 4 FAN1 FAN2 FA...

Page 123: ...AN3 FAN5 FC3 FC5 OFM2 OFM4 OFM7 3 FAN1 FAN2 FAN3 FAN5 FC1 FC2 FC3 FC5 OFM5 OFM1 OFM2 OFM4 OFM7 4 FAN1 FAN2 FAN3 FAN4 FAN5 FC1 FC2 FC3 FC4 FC5 OFM5 OFM1 OFM2 OFM4 OFM3 OFM8 OFM7 38APD115 With Motormaster Controller A 1 FAN5 FC5 OFM7 2 FAN1 FAN5 FC1 FC5 OFM5 OFM7 3 FAN1 FC1 OFM5 4 FAN4 FAN5 FC4 FC5 OFM3 OFM8 OFM7 B 1 FAN2 FC2 OFM1 2 FAN2 FAN4 FC2 FC4 OFM1 OFM3 OFM8 3 FAN2 FAN3 FC2 FC3 OFM OFM2 OFM4 ...

Page 124: ...AN5 FC1 FC3 FC4 FC5 OFM5 OFM2 OFM4 OFM6 OFM3 OFM8 OFM7 B 1 FAN1 FC1 OFM5 2 FAN1 FAN2 FAN4 FC1 FC2 FC4 OFM5 OFM1 OFM3 OFM8 3 FAN1 FAN2 FAN3 FC1 FC2 FC3 OFM5 OFM1 OFM2 OFM4 OFM6 4 FAN1 FAN2 FAN3 FAN4 FC1 FC2 FC3 FC4 OFM5 OFM1 OFM2 OFM4 OFM6 OFM3 OFM8 A and B 1 FAN1 FC1 OFM5 2 FAN1 FAN4 FC1 FC4 OFM5 OFM3 OFM8 3 FAN1 FAN2 FAN4 FAN5 FC1 FC2 FC4 FC5 OFM5 OFM1 OFM3 OFM8 OFM7 4 FAN1 FAN3 FAN4 FAN5 FC1 FC3...

Page 125: ... the Motormaster V controller to try to maintain it at 105 F 40 6 C On 38APD070 130 and 38APS025 065 units each circuit controls its Motormaster V controller to try to maintain SCT at 105 F 40 6 C for the circuit The signal to the Motormaster V controller can be moni tored through the scrolling marquee or Navigator display Each circuit has a corresponding signal in percentage of full speed These v...

Page 126: ...Fig 146 for Run Jumper terminations See Fig 147 for connection diagram See Table 55 for Operating Mode drive parameters and default values Once the drive is powered it will change to the mode selected according to the inputs See Fig 148 Table 54 Run Jumper Connection Points RUN JUMPER CONNECTION VOLTAGE Hz OPERATING MODE 1 TO 2 208 230 60 460 60 575 60 5 13A TO 2 208 60 380 60 6 13C TO 2 380 415 5...

Page 127: ... P28 Fixed boost 0 5 at low frequencies 0 5 0 5 0 5 0 5 P29 Accel boost 0 0 0 0 0 P30 Slip compensation 0 0 0 0 0 P31 Preset spd 1 speed if loss of control signal 57 57 47 47 P32 Preset spd 2 0 0 0 0 0 P33 Preset spd 3 0 0 0 0 0 P34 Preset spd 4 default R22 410A set point TB12 2 open 18 0 18 0 18 0 18 0 P35 Preset spd 5 default R134a set point TB12 2 closed 12 6 12 6 12 6 12 6 P36 Preset spd 6 def...

Page 128: ... L set point The factory default is 20 F 28 9 C and indicates that this feature is disabled If an Outdoor Air Temperature Sensor fail ure is declared this feature must be disabled by setting the OAT L to 20 F 28 9 C to allow the unit to operate MAINTENANCE REMINDER The 38AP ComfortLink controls have the ability to provide a reminder for service per sonnel that regularly scheduled condenser coil ma...

Page 129: ... or T59 can be installed for space temperature reset To use space temperature reset four variables must be con figured In ConfigurationoRSET set these items Cooling Reset Type CRST Configure for the type of reset desired Space Temperature Remote No Reset Temp RM NO Set to the tempera ture that no reset should occur Remote Full Reset Temp RM F Set to the tempera ture that maximum reset is to occur ...

Page 130: ...TIVE SETPOINT F SPACE TEMPERATURE F a38 7300 Fig 149 Space Temperature Reset F CRST 4 0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 19 0 19 5 20 0 20 5 21 0 21 5 22 0 22 5 23 0 RM F 20 0 C Remote Full Reset Temp RM NO 22 2 C Remote No Reset Temp RM DG 3 3 ΔC Remote Degrees Reset TEMPERATURE RESET APPLIED TO ACTIVE SETPOINT C SPACE TEMPERATURE C a38 7301 Fig 150 Space Temperature Reset C CRST 4 ...

Page 131: ...5 F 12 8 C and OAT 55 F 12 8 C or less the Control Point Run StatusoVIEWoCTPT will reflect 6 F 3 3 C reset or 61 F 16 1 C If OAT 85 F 29 4 C or more the control point Run StatusoVIEWoCTPT will reflect 0 F 0 0 C reset or 55 F 12 8 C Between OAT 55 F 12 8 C and OAT 85 F 29 4 C a proportional reset amount will be applied to CTPT Table 60 Configuring Outside Air Temperature Reset Not supported CONFIGU...

Page 132: ...NT F OUTSIDE AIR TEMPERATURE F A38 7302 Fig 151 Outside Air Temperature Reset F CRST 2 0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 RM F 12 8 C Remote Full Reset Temp RM NO 29 4 C Remote No Reset Temp RM DG 3 3 ΔC Remote Degrees Reset OUTSIDE AIR TEMPERATURE C TEMPERATURE RESET APPLIED TO ACTIVE SETPOINT C A38 7303 Fig 152 Outside Air Temperature Reset C CRST 2 ...

Page 133: ...or 55 F 12 8 C If RSET 20 mA the Control Point Run Statuso VIEWoCTPT will reflect 6 F 3 3 C reset or 61 F 16 1 C Between RSET 4 mA and RSET 20 mA a proportional reset amount will be applied to CTPT Table 61 Configuring 4 to 20 mA Temperature Reset Not supported CAUTION To avoid unit damage care should be taken when interfac ing with other manufacturer s control systems due to power supply differen...

Page 134: ...IVE SETPOINT F 4 20 mA INPUT SIGNAL RSET A38 7304 Fig 153 4 20 mA Temperature Reset F CRST 1 0 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 0 5 10 15 20 25 MA DG 3 3 ΔC 4 20 Degrees Reset TEMPERATURE RESET APPLIED TO ACTIVE SETPOINT C 4 20 mA INPUT SIGNAL RSET A38 7305 Fig 154 4 20 mA Temperature Reset C CRST 1 ...

Page 135: ...at the capacity of the unit is being limited by the demand limit control option Because of this limitation the unit may not be able to produce the desired sup ply air temperature Demand limit can be controlled by switch inputs or a 4 to 20 mA signal See Demand Limit on page 115 for additional information MD17 Low Temperature Cooling When this mode is active Operating ModesoMODEoMD17 YES unit is ON...

Page 136: ... unit can be switched to En able or Remote Control for normal operation MODE ITEM EXPANSION DESCRIPTION SYSTEM EFFECT D OIL Digital Oil Recover Mode Digital compressor has been running below standard Maximum A1 Unload Time ConfigurationoUNIToMAX T for more than 30 minutes Digital compres sor will load to 100 for 30 seconds Digital compressor will load completely supply air temperature may be lower...

Page 137: ...cement compressor Wear safety glasses and gloves when handling refrigerants Failure to follow this warning can cause fire resulting in personal injury or death CAUTION Do not manually operate contactors Serious damage to the machine may result Compressor Layout Dual Circuit 38APD CONTROL BOX A1 Top View Sizes 025 030 B1 CONTROL BOX B1 Top View Sizes 040 060 B2 A1 A2 CONTROL BOX B1 Top View Sizes 0...

Page 138: ... are equipped with advanced scroll temperature protection ASTP A label located above the terminal box identifies models that contain this technology See Fig 158 Advanced scroll temperature protection is a form of internal discharge temperature protection that unloads the scroll com pressor when the internal temperature reaches approximately 300 F 150 C At this temperature an internal bi metal disk...

Page 139: ...TE Turning off power to the module will reset it immedi ately For this reason module power must never be switched with the control circuit voltage Current sensing boards monitor to the compressor current The ComfortLink control system takes advantage of the com pressor overload operation by locking out the compressor if current draw is not detected This will prevent unnecessary compressor cycling ...

Page 140: ...reSense Replacement of Kriwan Motor Protection Module The Kriwan module has been replaced by the Core Sense communication module for motor protection Minor wiring changes are required as described below Removing the Kriwan motor protection module 1 Disconnect and lock out the high voltage and control voltage supply to the unit 2 Using a straight blade screwdriver carefully depress the tabs holding...

Page 141: ...e communication electronic control module Motor thermistors are connected to the CoreSense commu nication module via a 2x2 plug Fig 165 The CoreSense communications module has field configurable DIP switches for addressing and configuring the module The DIP switches should be addressed as shown in Table 63 The CoreSense communication module has a green and a red light emitting diode LED A solid gr...

Page 142: ...has locked out the compressor a power cycle will be required to clear the lockout Code 3 Short Cycling The module will flash the red Alert LED 3 times indicating the compressor is locked out due to short cycling A Code 3 Alert will open the M2 M1 contacts Code 3 will be enabled when the Short Cycling DIP switch no 10 is ON in the up position and the compressor has exceeded the number of short cycl...

Page 143: ...reater than 4500 Lock out occurs after 5 alerts Thermistor resistance less than 2750 and 30 min utes have elapsed 1 Check power supply 2 Check system charge and superheat 3 Check compressor contactor RED FLASH CODE 2 Open shorted motor thermistor Thermistor resistance greater than 4500 or less than 100 Lockout occurs after 6 hours Terhmistor resistance is between 100 and 2750 and 30 minutes have e...

Page 144: ... sets on mounting rails 1 Open and tag all disconnects following proper lock out tag out procedures Use proper personal protective equip ment 2 Remove the junction box cover and disconnect the com pressor power and ground connections See Fig 167 or 168 3 Disconnect and remove the crankcase heater from the compressor Save the ground screw for re installation later 4 If the compressor is equipped wi...

Page 145: ...me holes out of the new compressor junction box if required and install the cable connectors from the old compressor 23 Install the crankcase heater on the compressor as de scribed in the section Crankcase Heater Mounting on page 146 and wire the crankcase heater as described in the same section Crankcase heater position is critical to proper operation 24 For compressors with the motor protection ...

Page 146: ...the system is in a deep vacuum Compressor failure may occur UNIT SERIAL NUMBER CRANKCASE HEATER LOCATION CIRCUIT A COMPRESSOR S CIRCUIT B COMPRESSOR S 38APD025 Fig 170 Fig 170 38APD027 Fig 171 Fig 171 38APD030 Fig 171 Fig 171 38APD040 Fig 170 Fig 170 38APD050 Fig 170 Fig 171 38APD060 Fig 171 Fig 171 38APD070 Fig 171 Fig 170 38APD080 Fig 171 Fig 171 38APD090 Fig 171 Fig 171 38APD100 Fig 171 Fig 171...

Page 147: ...uses a polyolester POE oil This is extremely hygro scopic meaning it absorbs water readily POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants Take all necessary precau tions to avoid exposure of the oil to the atmosphere Failure to do so could result in possible equipment damage UNIT CIRCUIT A CIRCUIT B COMPRESSOR QTY OIL CHARGE PER COMPRESSOR oz L COMP...

Page 148: ...sure Transducer DTT Discharge Temperature Thermistor HPS High Pressure Switch RGT Return Gas Temperature Sensor SPT Space Temperature Sensor SUCTION SCHRADER A OIL SIGHT GLASS RGT A HPS A DPT A DTT A SPT A OIL ADD LOCATION Fig 176 Typical Trio Compressor Assembly LEGEND DPT Discharge Pressure Transducer DTT Discharge Temperature Thermistor HPS High Pressure Switch RGT Return Gas Temperature Sensor...

Page 149: ...ic time and maintenance schedules Table 70 Replacement Modules Refer to the Start Up Checklist for 38AP units completed at time of original start up found in the job folder This infor mation is needed later in this procedure If the checklist does not exist fill out the current information in the Configuration mode on a new checklist Tailor the various options and config urations as needed for this...

Page 150: ...gn revision A shroud and a wire guard provide protection from the rotating fan Gray Bolt The fan motor shaft is protected from weather by grease and the fan cover If fan motor must be removed for ser vice or replacement when reinstalling the motor be sure to mount the motor band in the proper location Re grease fan shaft and reinstall fan cover The fan motor has a step in the motor shaft For prope...

Page 151: ...oacoustic Fan Gray Bolt Mounted Position a38 7326 680 Fig 179 Aeroacoustic Fan Black Bolt Fan Hub Keyway a38 7327 680 Fig 180 Aeroacoustic Fan Black Bolt Fan Motor Keyway TORQUE BOLTS 24 2 ft lb 32 5 2 7 N m FAN DECK 7 00 in 178 mm MIN a38 7328 Fig 181 Aeroacoustic Fan Black Bolt Mounted Position ...

Page 152: ... controller requires a combination of observing system operation and VFD informa tion The drive provides 2 kinds of troubleshooting modes a status matrix using the 3 digit display Parameters P57 P58 and real time monitoring of key inputs and outputs The collec tive group is displayed through parameters P50 through P60 All values are read only These parameters can be accessed without a password Pre...

Page 153: ...r indicates the level of the 0 to 10 vdc analog input signal at TB 5 A value of 100 indicates a 10 vdc at TB 5 P56 4 to 20 mA Input Analog Input This parameter indicates the level of the 4 to 20 mA analog input signal at TB 25 A value of 20 indicates a 4 mA input at TB 25 A value of 100 indicates a 20 mA at TB 25 P57 Terminal Strip Status This parameter indicates the status of several terminals us...

Page 154: ...lts P48 see fault code CF If that does not work replace EPM HF High DC Bus Voltage Fault line voltage is too high deceleration rate is too fast overhauling load Check line voltage set P01 appropriately JF Serial Fault The watchdog timer has timed out indicat ing that the serial link has been lost Check serial connection computer Check settings for P15 Check settings in communication software to ma...

Page 155: ...liquid line between the condenser coils and the liquid line service valve Thermistors Several styles of thermistors are used in the 38AP units See Thermistors on page 28 for specific infor mation on each thermistor Thermistor connections are made to both the MBB and AUX Board See Fig 184 and 185 MBB J8 A38 7331 Fig 183 Typical 38AP Pressure Transducer Wiring WARNING Care should be exercised while ...

Page 156: ... replaced simply by replacing the old with the new Discharge Temperature Thermistor DTT This thermis tor is only used when the unit is equipped with a digital com pressor Mount the thermistor in the appropriate location Once in place and wired insulate the device with cork insulation tape to form a watertight seal around the thermistor and minimize the ambient influence on the sensor See Fig 45 on...

Page 157: ...3 906 88 1 298 3 814 89 1 278 3 726 90 1 257 3 640 91 1 237 3 556 92 1 217 3 474 93 1 198 3 395 94 1 179 3 318 95 1 160 3 243 96 1 141 3 170 97 1 122 3 099 98 1 104 3 031 99 1 086 2 964 100 1 068 2 898 101 1 051 2 835 102 1 033 2 773 103 1 016 2 713 104 0 999 2 655 105 0 983 2 597 106 0 966 2 542 107 0 950 2 488 108 0 934 2 436 109 0 918 2 385 110 0 903 2 335 111 0 888 2 286 112 0 873 2 239 113 0 ...

Page 158: ...80 5 225 25 1 538 5 000 26 1 497 4 786 27 1 457 4 583 28 1 417 4 389 29 1 378 4 204 30 1 340 4 028 31 1 302 3 861 32 1 265 3 701 33 1 229 3 549 34 1 194 3 404 35 1 160 3 266 36 1 126 3 134 37 1 093 3 008 38 1 061 2 888 39 1 030 2 773 40 0 999 2 663 41 0 969 2 559 42 0 940 2 459 43 0 912 2 363 44 0 885 2 272 45 0 858 2 184 46 0 832 2 101 47 0 807 2 021 48 0 782 1 944 49 0 758 1 871 50 0 735 1 801 5...

Page 159: ...73 7 685 89 2 144 7 507 90 2 115 7 333 91 2 087 7 165 92 2 059 6 999 93 2 030 6 838 94 2 003 6 683 95 1 975 6 530 96 1 948 6 383 97 1 921 6 238 98 1 894 6 098 99 1 867 5 961 100 1 841 5 827 101 1 815 5 698 102 1 789 5 571 103 1 763 5 449 104 1 738 5 327 105 1 713 5 210 106 1 688 5 095 107 1 663 4 984 108 1 639 4 876 109 1 615 4 769 110 1 591 4 666 111 1 567 4 564 112 1 544 4 467 113 1 521 4 370 11...

Page 160: ...21 4 370 46 1 480 4 203 47 1 439 4 042 48 1 400 3 889 49 1 362 3 743 50 1 324 3 603 51 1 288 3 469 52 1 252 3 340 53 1 217 3 217 54 1 183 3 099 55 1 150 2 986 56 1 117 2 878 57 1 086 2 774 58 1 055 2 675 59 1 025 2 579 60 0 996 2 488 61 0 968 2 400 TEMP C VOLTAGE DROP V RESISTANCE OHMS 62 0 940 2 315 63 0 913 2 235 64 0 887 2 157 65 0 862 2 083 66 0 837 2 011 67 0 813 1 943 68 0 790 1 876 69 0 767...

Page 161: ...and removal of harmful residues will greatly increase the life of the coil and extend the life of the unit The following steps should be taken to clean MCHX condenser coils Once coil maintenance is complete using the scrolling marquee or Navigator display to indicate to the control Coil Cleaning Maintenance Done Run StatusoPMoCOILoC L MN by toggling the value from NO to YES 1 Remove any foreign ob...

Page 162: ...heck non fused disconnect if equipped Restore power to unit Check for 24 volts at the control boards Wrong incorrect unit configuration Check unit configuration If unit is controlled by a Local Schedule check to be sure that the Day of the Week is properly set Enable Off Remote Switch is not in a position to allow the unit to operate Fan Status Switch is open Active alarm Check alarm status See Al...

Page 163: ... Circuit B Compressor 1 Failure Affected compressor is shut down Manual 166 A056 Alarm Circuit B Compressor 2 Stuck On Failure All compressor outputs de energized Head pressure control remains active Manual 166 T056 Alert Circuit B Compressor 2 Chattering Failure Affected compressor is shut down Manual 166 Circuit B Compressor 2 Failure Affected compressor is shut down Manual 166 A057 Alarm Circui...

Page 164: ...sor in the circuit is running one of the compressors will be shut down A 15 minute prohibition timer is added to the compressor Automatic 168 T121 Alert Circuit B Low Saturated Suction Temperature Alert The circuit is shut down A 15 minute prohibition timer is added to the last compressor Automatic 168 P122 Pre Alert Circuit A High Pressure Switch Chattering This is a non broadcast alarm Circuit s...

Page 165: ... Input Failure For ConfigurationoOPT2oC TYP 7 without Return Air and Supply Air Thermis tors unit is shut down or not allowed to start For ConfigurationoOPT2oC TYP 9 4 20 mA set point function is disabled For ConfigurationoOPT2oC TYP 7 with Return Air and Supply Air Thermistors or C TYP 9 unit operates with Cooling Set Point 1 SetpointsoCOOLoCSP 1 as the Active Set Point Run StatusoVIEWo SETP Auto...

Page 166: ...ll be activated to energize fans to maintain proper head pressure All other com pressors will be commanded OFF Reset Method Manual Possible Causes If this condition is encountered check the following items Check for a welded compressor contactor Check for a faulty Current Sensing Board Check the Main Base Board relay output for the com pressor command Check for a wiring error T051 Circuit A Compre...

Page 167: ...45 F 40 to 118 C Action To Be Taken If the sensor is being used as the control input to determine capacity ConfigurationoOPT2o C TYP 5 SPT Multi the control s response depends on the failure mode If the sensor fails open the unit will be OFF with the Control Mode Run StatusoVIEWoSTAT 9 SPT Satisfied and Space Temp Control Mode Run Statuso VIEWoSPT M 0 Cool Off If the sensor fails closed or shorted...

Page 168: ...e suction pressure is an average or the lowest suction pressure readings over the period of time This has the tendency to artificially increase the reported superheat since the lowest suction pressure saturated suction temperature is used Action To Be Taken The circuit is shut down Reset Method Manual Possible Causes If this condition is encountered check the following items Check the charge for t...

Page 169: ... supply air temperature especially in a face split coil Check for restrictions in the liquid line Be sure all ser vice valves are open Check the filter drier Change the core s if necessary Check the operation of the liquid line solenoid valves if equipped Be sure that the correct valve operates for the circuit Be sure that the liquid line solenoid valve is installed cor rectly flow if equipped For...

Page 170: ... T126 Circuit A High Head Pressure A127 Circuit B High Head Pressure T127 Circuit B High Head Pressure Criteria for Trip The following conditions must be true 1 The circuit is ON 2 All outdoor fans for the circuit or all common outdoor fans must be ON 3 The compressor s operation is outside of the operating envelope See Fig 156 and 157 on page 138 for the compressor operating envelope or see the f...

Page 171: ...compressor has been started If the suction pressure is not at least 1 25 psig 8 62 kPa lower than the expected value or the upper limit for proof of proper rotation a reverse rota tion alarm is declared The example below lists sample suction pressures of a starting circuit Figures 189 and 190 show reverse rotation detection for this example a38 7400 Fig 187 Maximum Saturated Condensing Temperature...

Page 172: ...172 a38 7402 Fig 189 Reverse Rotation Detection psig a38 7403 Fig 190 Reverse Rotation Detection kPa ...

Page 173: ...AL CONFIG INVALID UNIT SIZE Action To Be Taken The unit is not allowed to start Reset Method Automatic once the illegal configuration is cor rected Possible Causes If this condition is encountered check the items shown in Table 80 based on the illegal configuration Table 80 Illegal Configurations Alarm A151 ILLEGAL CONFIGURATION POSSIBLE CAUSES AUX BOARD INCORRECT REVISION Check to see if the AUX ...

Page 174: ...wed to start Reset Method Manual Possible Causes If this condition is encountered reset the power to the unit If the error returns replace the board T170 Loss of Communication with the Compressor Expansion Module Criteria for Trip This alert is generated when the Main Base Board MBB cannot establish communication with the Com pressor Expansion Module CXB This board is found on the 38APD070 130 uni...

Page 175: ...o start or is shut down Reset Method Automatic once the condition is resolved Possible Causes If this condition is encountered check the following items Confirm that airflow is present in the air handler if an air flow switch is used Check airflow switch circuit wiring If no airflow switch is used confirm the jumper is in place between LVT 16 and LVT 18 T201 Circuit A Indoor Fan Status Failure Fan...

Page 176: ...ing Setpoints HEAD Head Pressure Setpoints INPUTS GEN I General Inputs CRCT Circuit Inputs 4 20 4 20 mA Inputs OUTPUTS GEN O General Outputs CIR A Outputs Circuit A CIR B Outputs Circuit B CONFIGURATION DISP Display Configuration UNIT Unit Configuration CCN CCN Network Configs OPT1 Unit Options 1 Hardware OPT2 Unit Options 2 Controls M MST Motormaster RSET Reset Cool Temp SLCT Setpoint and Ramp Lo...

Page 177: ...COOL ON OCC YES NO Occupied MODE YES NO Override Modes in Effect CAP XXX Percent Total Capacity STGE X Requested Stage ALRM XXX Current Alarms Alerts TIME HH MM Time of Day 00 00 23 59 MNTH XX Month of Year Range 1 to 12 1 January 2 February etc DATE XX Day of Month Range 1 to 31 YEAR XXXX Year of Century RUN UNIT RUN HOUR AND START HRS U XXXX HRS Machine Operating Hours STR U XXXX Machine Starts ...

Page 178: ...74 XXXXX MARQ CESR131171 XXXXX NAVI CESR130227 XXXXX SUB MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT TEST ON OFF Service Test Mode To enable Service Test mode move Enable Off Remote contact switch to OFF Change TEST to ON and move switch to ENABLE OUTS OUTPUTS FAN1 OFF ON Fan 1 Relay FAN2 OFF ON Fan 2 Relay FAN3 OFF ON Fan 3 Relay FAN4 OFF ON Fan 4 Relay FAN5 OFF ON Fan 5 Relay V HPA XXX Var Head P...

Page 179: ...erature See Note 1 SAT XXX X F C Supply Air Temperature See Note 1 OAT XXX X F C Outside Air Temperature See Note 1 SPT XXX X F C Space Temperature See Notes 1 and 2 CIR A TEMPERATURES CIRCUIT A SCT A XXX X F C Saturated Condensing Tmp SST A XXX X F C Saturated Suction Temp RGT A XXX X F C Compressor Return Gas Temp See Note 1 D GAS XXX X F C Discharge Gas Temp SH A XXX X ǻF ǻC Suction Superheat T...

Page 180: ...ǻF ǻC Lo Cool On Set Point Range 1 0 to 2 0 ǻF 0 6 to 1 1 ǻC Default 1 0 ǻF 0 6 ǻC H C ON XX X ǻF ǻC Hi Cool On Set Point Range 0 5 to 20 0 ǻF 0 3 to 11 1 ǻC Default 3 0 ǻF 1 7 ǻC Recommended Setting 3 0 ǻF 1 7 ǻC L C OF X X ǻF ǻC Lo Cool Off Set Point Range 0 5 to 2 0 ǻF 0 3 to 1 1 ǻC Default 0 5 ǻF 0 3 ǻC Recommended Setting 0 5 ǻF 0 3 ǻC OAT L XX X F C OAT Lockout Temperature Range 20 0 to 80 0...

Page 181: ...FF Compressor B3 Feedback HPSB OPEN CLSE High Pressure Switch B 4 20 4 20 MA INPUTS DMND XX X mA 4 20 ma Demand Signal RSET XX X mA 4 20 ma Reset Signal CL MA XX X mA Cap Req Setpoint Signal SUB MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT GEN O GENERAL OUTPUTS FAN1 ON OFF Fan 1 Relay FAN2 ON OFF Fan 2 Relay FAN3 ON OFF Fan 3 Relay FAN4 ON OFF Fan 4 Relay FAN5 ON OFF Fan 5 Relay MLV R ON OFF Minimum...

Page 182: ... 38APS065 70 63 38APD070 80 73 38APD080 90 82 38APD090 100 91 38APD100 115 104 38APD115 130 118 38APD130 NCKT X Number of Refrigerant Circuits Based on Unit Model Range 1 to 2 1 38APS 2 38APD SZ A1 XX TONS tons Compressor A1 Size These values are set by SIZE and are not field configurable See ConfigurationoUNIT Data Table on page 185 SZ A2 XX TONS tons Compressor A2 Size SZ A3 XX TONS tons Compres...

Page 183: ...Type Range 0 to 2 0 5 k 1 10 k 2 None Default 0 SAT T X SAT Thermistor Type Range 0 to 2 0 5 k 1 10 k 2 None Default 0 EMM YES NO EMM Module installed Default YES Factory Equipped NO Not Equipped OPT2 UNIT OPTIONS 2 CONTROLS C TYP X Machine Control Type Range 1 to 9 1 VAV 2 Invalid 3 Tstat Multi 4 Tstat 2 Stg 5 SPT Multi 6 Invalid 7 Pct Cap 8 Dual Tstat 9 VAV Setpoint Default 4 CTRL X Control Meth...

Page 184: ...rees Reset Range 30 to 30 ǻF 16 7 to 16 7 ǻC Default 0 0 ǻF 0 0 ǻC RT NO XX X ǻF ǻC Return No Reset Temp Feature Not Supported Range 0 0 to 30 0 ǻF 0 0 to 16 7 ǻC Default 10 0 ǻF 5 6 ǻC RT F XX X ǻF ǻC Return Full Reset Temp Feature Not Supported Range 0 0 to 10 0 ǻF 0 0 to 5 6 ǻC Default 0 0 ǻF 0 0 ǻC RT DG XX X ǻF ǻC Return Degrees Reset Feature Not Supported Range 30 0 to 30 0 ǻF 16 7 to 16 7 ǻ...

Page 185: ... TONS 14 tons 0 0 15 TONS 14 tons 0 0 1 38APD040 10 TONS 9 tons 10 TONS 9 tons 0 9 TONS 8 tons 9 TONS 8 tons 0 2 38APD050 12 TONS 11 tons 12 TONS 11 tons 0 13 TONS 12 tons 13 TONS 12 tons 0 2 38APD060 13 TONS 12 tons 13 TONS 12 tons 0 15 TONS 14 tons 15 TONS 14 tons 0 3 38APD070 15 TONS 14 tons 15 TONS 14 tons 0 11 TONS 10 tons 11 TONS 10 tons 11 TONS 10 tons 8 38APD080 15 TONS 14 tons 15 TONS 14 ...

Page 186: ...sday etc Default 7 MIN A XX Minutes to Add Range 0 to 90 Default 60 STP M XX Month Range 1 to 12 1 January 2 February etc Default 10 October STP W X Week Range 1 to 5 Default 5 STP D X Day Range 1 to 7 1 Monday 2 Tuesday etc Default 7 MIN S XX Minutes to Subtract Range 0 to 90 Default 60 HOL L LOCAL HOLIDAY SCHEDULES HD 01 HOLIDAY SCHEDULE 01 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1...

Page 187: ... No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 06 HOLIDAY SCHEDULE 06 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 0...

Page 188: ... No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 12 HOLIDAY SCHEDULE 12 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 1...

Page 189: ...ult 0 LEN Duration days Range 0 to 99 Default 0 HD 17 HOLIDAY SCHEDULE 17 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 18 HOLIDAY SCHEDULE 18 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY X...

Page 190: ... No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 23 HOLIDAY SCHEDULE 23 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 2...

Page 191: ...ult 0 LEN Duration days Range 0 to 99 Default 0 HD 28 HOLIDAY SCHEDULE 28 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY XX Start Day Range 0 to 31 0 No Holiday 1 to 31 Day of Month Default 0 LEN Duration days Range 0 to 99 Default 0 HD 29 HOLIDAY SCHEDULE 29 MON XX Holiday Start Month Range 0 to 12 0 No Holiday 1 January 2 February etc Default 0 DAY X...

Page 192: ...NO Wednesday In Period Default NO THU 2 YES NO Thursday In Period Default NO FRI 2 YES NO Friday In Period Default NO SAT 2 YES NO Saturday In Period Default NO SUN 2 YES NO Sunday In Period Default NO HOL 2 YES NO Holiday In Period Default NO OCCUPANCY PERIOD 3 PER 3 OCC 3 XX XX Period Occupied Time 24 Hour Format Range 00 00 to 23 59 Default 00 00 UNC 3 XX XX Period Unoccupied Time 24 Hour Forma...

Page 193: ...fault NO FRI 6 YES NO Friday In Period Default NO SAT 6 YES NO Saturday In Period Default NO SUN 6 YES NO Sunday In Period Default NO HOL 6 YES NO Holiday In Period Default NO PER 7 OCCUPANCY PERIOD 7 OCC 7 XX XX Period Occupied Time 24 Hour Format Range 00 00 to 23 59 Default 00 00 UNC 7 XX XX Period Unoccupied Time 24 Hour Format Range 00 00 to 23 59 Default 00 00 MON 7 YES NO Monday In Period D...

Page 194: ...F Minimum OFF time active MD14 ON OFF Temperature Reset MD15 ON OFF Demand Limited MD17 ON OFF Low Temperature Cooling MD18 ON OFF High Temperature Cooling MDTG ON OFF Time Guard Active MD21 ON OFF High SCT Circuit A MD22 ON OFF High SCT Circuit B MD23 ON OFF Minimum Comp On Time MD25 ON OFF Low Sound Mode D OIL ON OFF Digital Oil Recover Mode L OUT ON OFF OAT Below Lockout Temp SUB MODE ITEM DISP...

Page 195: ...e Setpoint NNN n F C SP Read Only Control Point NNN n F C CTRL_PNT Read Write Return Air Temperature NNN n F C RETURN_T Read Write Supply Air Temperature NNN n F C SUPPLY_T Read Write Emergency Stop Enable EMStop EMSTOP Read Write Minutes Left for Start 5 Character ASCII MIN_LEFT Read Only DESCRIPTION VALUE UNITS POINT NAME NETWORK ACCESS CIRCUIT A ANALOG VALUES Percent Total Capacity NNN CAPA_T R...

Page 196: ...WORK ACCESS CIRC B ANALOG VALUES Percent Total Capacity NNN CAPB_T Read Only Percent Available Cap NNN CAPB_A Read Only Discharge Pressure NNN n psig kPa DP_B Read Only Suction Pressure NNN n psig kPa SP_B Read Only Saturated Condensing Tmp NNN n F C SCTB Read Only Saturated Suction Temp NNN n F C SSTB Read Only Var Head Press Out Cir B NNN n VHPB_ACT Read Only Compr Return Gas Temp NNN n F C RGTB...

Page 197: ...T Read Write TEMPERATURE RESET 4 20 mA Reset Signal NN n mA RST_MA Read Only Outside Air Temperature NNN n F C OAT Read Write Space Temperature NNN n F C SPT Read Write DEMAND LIMIT 4 20 mA Demand Signal NN n mA LMT_MA Read Only Demand Limit Switch 1 OFF ON DMD_SW1 Read Only Demand Limit Switch 2 OFF ON DMD_SW2 Read Only CCN Loadshed Signal N DL_STAT Read Only MISCELLANEOUS Supply Air Setpoint NNN...

Page 198: ...RM18C Read Only Active Alarm 19 ALARM19C Read Only Active Alarm 20 ALARM20C Read Only Active Alarm 21 ALARM21C Read Only Active Alarm 22 ALARM22C Read Only Active Alarm 23 ALARM23C Read Only Active Alarm 24 ALARM24C Read Only Active Alarm 25 ALARM25C Read Only DESCRIPTION VALUE UNITS POINT NAME NETWORK ACCESS Ramp Load Limited OFF ON MODE_5 Read Only Timed Override in effect OFF ON MODE_6 Read Onl...

Page 199: ...ure NNN n F C SUPPLY_T Read Write Ramp Load Limited OFF ON MODE_5 Read Only Slow Change Override OFF ON MODE_9 Read Only Low Temperature Cooling OFF ON MODE_17 Read Only High Temperature Cooling OFF ON MODE_18 Read Only Minimum Comp On Time OFF ON MODE_23 Read Only DESCRIPTION VALUE UNITS POINT NAME NETWORK ACCESS Coil Cleaning Srvc Inter NNNNN Range 0 to 65 500 Default 8760 hours SI_COIL Read Wri...

Page 200: ...ad Only Suction Pressure NNN n psig kPa SP_B Read Only Head Setpoint ON NNN n F C HSP_ON Read Only Head Setpoint OFF NNN n F C HSP_OFF Read Only Saturated Condensing Tmp NNN n F C SCTB Read Only Saturated Suction Temp NNN n F C SSTB Read Only Compr Return Gas Temp NNN n F C RGTB Read Only Suction Superheat Temp NNN n F C SH_B Read Only Compressor B1 Relay OFF ON K_B1_RLY Read Only Compressor B2 Re...

Page 201: ... NETWORK ACCESS Service Test Mode OFF ON NET_CTRL Read Only Compressor A1 Relay OFF ON S_A1_RLY Read Only Compressor A2 Relay OFF ON S_A2_RLY Read Only Compressor A3 Relay OFF ON S_A3_RLY Read Only Compressor B1 Relay OFF ON S_B1_RLY Read Only Compressor B2 Relay OFF ON S_B2_RLY Read Only Compressor B3 Relay OFF ON S_B3_RLY Read Only Fan 1 Relay OFF ON S_FAN_1 Read Only Fan 2 Relay OFF ON S_FAN_2 ...

Page 202: ...pied Time 00 00 to 23 59 NXTOCTIM Read Only Next Unoccupied Day Monday Tuesday Wednesday Thursday Friday Saturday Sunday NXTUNDAY Read Only Next Unoccupied Time 00 00 to 23 59 NXTUNTIM Read Only Previous Unoccupied Day Monday Tuesday Wednesday Thursday Friday Saturday Sunday PRVUNDAY Read Only Previous Unoccupied Time 00 00 to 24 00 PRVUNTIM Read Only DESCRIPTION VALUE UNITS POINT NAME NETWORK ACC...

Page 203: ...o Yes Default No Yes MM_SLCT Configuration Minimum Load Vlv Select No Yes Default No MLV_FLG Configuration CSB Boards Enable Disable Enable Default Enable CSB_ENA Configuration Space Temp Sensor Disable Enable Default Disable SPTSENS Configuration Space Temp Offset Enable Disable Enable Default Disable SPTOSENS Configuration Space Temp Offset Range NN Range 1 to 10 0 6 to 5 6 Default 5 2 8 F C SPT...

Page 204: ...upancy 2 Occupancy 3 CCN Default 0 CONTROL Configuration Loading Sequence Select N Range 1 Equal 2 Staged Default 1 SEQ_TYPE Configuration Lead Lag Circuit Select N Range 1 Automatic 2 Circuit A Leads 3 Circuit B Leads Default 1 LEAD_TYP Configuration Ramp Load Select Disable Enable Default Enable RAMP_EBL Configuration Minutes Off Time NN Range 0 to 15 Default 0 min DELAY Configuration Min Delay ...

Page 205: ... 10 5 6 F C REM_DEG Configuration RETURN TEMPERATURE RESET Return No Reset Temp Feature Not Supported NNN n Range 0 0 to 30 0 0 0 to 16 7 Default 10 0 5 6 F C RTN_NO Configuration Return Full Reset Temp Feature Not Supported NNN n Range 0 0 to 10 0 0 0 to 16 7 Default 0 0 0 0 F C RTN_FULL Configuration Return Degrees Reset Feature Not Supported NNN n Range 30 to 30 16 7 to 16 7 Default 0 0 0 0 F C...

Page 206: ...060 65 38APS065 70 38APD070 80 38APD080 90 38APD090 100 38APD100 115 38APD115 130 38APD130 TONS SIZE Configuration Number of Refrig Ckts N Based on Unit Model Range 1 One 38APS 2 Two 38APD NUMCKTS Configuration Compressor A1 Size NNN See UNIT Data Table on page 185 for appropriate data TONS SIZE_A1 Read Only Compressor A2 Size TONS SIZE_A2 Read Only Compressor A3 Size TONS SIZE_A3 Read Only Compre...

Page 207: ...CN Time Date Broadcast No Yes Default No CCNBC Read Write CCN OAT Broadcast No Yes Default No OATBC Read Write Global Schedule Broadcst No Yes Default No GSBC Read Write CCN Broadcast Ack er No Yes Default No CCNBCACK Read Write DAYLIGHT SAVINGS START Month NN Range 1 to 12 Default 4 STARTM Read Write Week N Range 1 to 5 Default 1 STARTW Read Write Day N Range 1 to 7 Default 7 STARTD Read Write Mi...

Page 208: ...ace T Cool Setpoint NNN n Range 65 0 to 80 0 18 3 to 26 7 Default 78 0 25 6 F C SPT_SP Read Write Space Temperature Offset NN n F C SPTO Read Only Space T SP Plus Offset NNN n F C SPSP_PO Read Only Percent Cap Requested NNN PERCAP Read Only Lo Cool On Setpoint NN n Range 1 0 to 2 0 0 6 to 1 1 Default 1 0 0 6 F C DMDLCON Read Write HI Cool On Setpoint NN n Range 0 5 to 20 0 0 3 to 11 1 F C DMDHCON ...

Page 209: ...209 APPENDIX B CCN TABLES cont Time Schedule Tables OCCPC01S a38 7335 ...

Page 210: ...ddress is 25 point the arrow on the Tens 10 s switch to 2 and the arrow on the Ones 1 s switch to 5 BACNET DEVICE INSTANCE ADDRESS The UPC Open controller also has a BACnet Device Instance address This Device Instance MUST be unique for the complete BAC net system in which the UPC Open controller is installed The Device Instance is auto generated by default and is derived by adding the MAC address...

Page 211: ...ontroller communicates using BACnet on an MS TP network segment communications at 9600 bps 19 2 kbps 38 4 kbps or 76 8 kbps Wire the controllers on an MS TP network segment in a dai sy chain configuration Wire specifications for the cable are 22 AWG American Wire Gage or 24 AWG low capacitance twisted stranded shielded copper wire The maximum length is 2000 ft 610 m Install a BT485 terminator on t...

Page 212: ...ATION Cable Single twisted pair low capacitance CL2P 22 AWG 7x30 TC foam FEP plenum rated cable Conductor 22 or 24 AWG stranded copper tin plated Insulation Foamed FEP 0 015 in 0 381 mm wall 0 060 in 1 524 mm O D Color Code Black White Twist Lay 2 in 50 8 mm lay on pair 6 twists foot 20 twists meter nominal Shielding Aluminum Mylar shield with 24 AWG TC drain wire Jacket SmokeGard Jacket SmokeGard...

Page 213: ...ent and Bus number are required both the ComfortLink and UPC Open configurations must be changed The following configurations are used to set the CCN Ad dress and Bus number in the ComfortLink controller These configurations can be changed using the scrolling marquee dis play or accessory Navigator handheld device at the follow ing items ConfigurationĺCCNĺCCN A CCN Address ConfigurationĺCCNĺCCN B ...

Page 214: ...en controller NETWORK POINTS LIST The points list for the control ler is shown in Table G Refer to Appendix B for additional information on CCN point names Table E LED Status Indicators Table F Run and Error LEDs Controller and Network Status Indication IMPORTANT Power must be ON to the UPC Open con troller when replacing the battery or the date time and trend data will be lost LED STATUS POWER Li...

Page 215: ...1_rly_1 Compressor A1 Run Hours HR_A1 R hr 0 9999 AV 60 hr_a1_1 Compressor A1 Starts CY_A1 R 0 9999 AV 68 cy_a1_1 Compressor A2 Feedback K_A2_FBK R ON_OFF BV 17 k_a2_fbk_1 Compressor A2 Relay K_A2_RLY R ON_OFF BV 14 k_a2_rly_1 Compressor A2 Run Hours HR_A2 R hr 0 9999 AV 61 hr_a2_1 Compressor A2 Starts CY_A2 R 0 9999 AV 69 cy_a2_1 Compressor A3 Feedback K_A3_FBK R ON_OFF BV 18 k_a3_fbk_1 Compresso...

Page 216: ...ALM comm_lost_alm Element Comm Status R 0 No Comm 1 Normal BV 2999 element_stat_1 Emergency Stop EMSTOP R W 0 0 Enable 1 Emstop BV 6 emstop_1 Fan 1 Relay FAN_1 R ON_OFF BV 60 fan_1_1 Fan 2 Relay FAN_2 R ON_OFF BV 61 fan_2_1 Fan 3 Relay FAN_3 R ON_OFF BV 62 fan_3_1 Fan 4 Relay FAN_4 R ON_OFF BV 63 fan_4_1 Fan 5 Relay FAN_5 R ON_OFF BV 64 fan_5_1 Fan Delta Active Time FANDLTTM R W sec 0 999 AV 10 fa...

Page 217: ...turn Air Temperature RETURN_T R F 0 125 AV 1010 ra_temp_1 Saturated Condensing Tmp SCTA R F 40 245 AV 40 scta_1 Saturated Condensing Tmp SCTB R F 40 245 AV 39 sctb_1 Saturated Suction Temp SSTA R F 40 245 AV 17 ssta_1 Saturated Suction Temp SSTB R F 40 245 AV 26 sstb_1 SCT Delta for Compressor A1 A1SCTDT R W F 0 99 AV 41 a1sctdt_1 SCT Delta for Compressor A2 A2SCTDT R W F 0 99 AV 46 a2sctdt_1 SCT ...

Page 218: ...er Defined Analog 4 R W AV 2904 user_analog_4_1 User Defined Analog 5 R W AV 2905 user_analog_5_1 User Defined Binary 1 R W ON_OFF BV 2911 user_binary_1_1 User Defined Binary 2 R W ON_OFF BV 2912 user_binary_2_1 User Defined Binary 3 R W ON_OFF BV 2913 user_binary_3_1 User Defined Binary 4 R W ON_OFF BV 2914 user_binary_4_1 User Defined Binary 5 R W ON_OFF BV 2915 user_binary_5_1 Var Head Press Ou...

Page 219: ...219 APPENDIX D PIPING AND INSTRUMENTATION DIAGRAMS a38 7339 Fig G 38APD025 030 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 220: ...220 APPENDIX D PIPING AND INSTRUMENTATION DIAGRAMS cont a38 7340 Fig H 38APD040 060 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 221: ...221 APPENDIX D PIPING AND INSTRUMENTATION DIAGRAMS cont a38 7341 Fig I 38APD070 080 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 222: ...222 APPENDIX D PIPING AND INSTRUMENTATION DIAGRAMS cont a38 7342 Fig J 38APD090 130 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 223: ...N DIAGRAMS cont a38 7343 Fig K 38APS025 030 Piping and Instrumentation NOTE Discharge check valve located inside each compressor a30 7344 Fig L 38APS040 050 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 224: ...224 APPENDIX D PIPING AND INSTRUMENTATION DIAGRAMS cont a38 7345 Fig M 38APS065 Piping and Instrumentation NOTE Discharge check valve located inside each compressor ...

Page 225: ...9 SPT SATISFIED Enable Open Yes No No 8 IDFS NOT ON Enable Closed Open Yes No Yes 4 OFF EMRGCY EMSTOP Closed Open Yes No Yes No 4 OFF EMRGCY Unoccupied N A Enable Closed Open Yes No No 3 OFF TIME Enable Closed Open Yes No Yes 4 OFF EMRGCY EMSTOP Closed Open Yes No Yes No 4 OFF EMRGCY Off Occupied N A Enable Closed Open Yes No No 1 OFF LOCAL Enable Closed Open Yes No Yes 4 OFF EMRGCY EMSTOP Closed ...

Page 226: ...es 4 OFF EMRGCY EMSTOP Closed Open Yes No Yes No 4 OFF EMRGCY Off N A Start Stop Enable Closed Open Yes No No 1 OFF LOCAL Enable Closed Open Yes No Yes 4 OFF EMRGCY EMSTOP Closed Open Yes No Yes No 4 OFF EMRGCY Remote Open N A Start Stop Enable Closed Open Yes No No 1 OFF LOCAL Enable Closed Open Yes No Yes 4 OFF EMRGCY EMSTOP Closed Open Yes No Yes No 4 OFF EMRGCY Remote Closed N A Start Enable C...

Page 227: ... Enable Off Remote Control switch 26 Energy management module EMM Described 26 Schematic 26 Fan staging 117 Fan status switch FS1 FS2 26 Filter drier service 152 Ground fault interrupter convenience outlet GFI CO testing 161 Head pressure control 117 High pressure switch HPS Described 28 Mounting 40 Replacing 152 High saturated condensing temperature SCT modes MD21 MD22 135 High temperature coolin...

Page 228: ...stor 30 Switches Emergency On Off 26 Enable Off Remote Control 26 Fan Status Switch FS1 FS2 26 High pressure HPS 28 Inputs MBB 24 Locations 28 System check pre start up 40 Temperature relief devices 155 Temperature reset 129 4 to 20 mA temperature reset 133 Outside air termperature reset 131 Space temperature reset 129 Temperature reset mode MD14 135 Thermistors Connections AUX 155 Connections MBB...

Page 229: ... ___________________________________________________________________________ START UP PERFORMED BY ________________________________________________________________ DESIGN INFORMATION SYSTEM INFORMATION CONTROL INFORMATION PIPING INFORMATION Be sure to include units of measure CONDENSING UNIT MARK FOR _______________________________ UNIT MODEL ______________________________ SERIAL _________________...

Page 230: ...TRICAL CIRCUIT PROTECTION HAS BEEN SIZED AND INSTALLED PROPERLY YES NO 7 ALL TERMINALS ARE TIGHT YES NO 8 ALL PLUG ASSEMBLIES ARE TIGHT YES NO 9 ALL CABLES AND THERMISTORS HAVE BEEN INSPECTED FOR CROSSED WIRES YES NO 10 RETURN GAS THERMISTOR S IS ARE FULLY INSERTED INTO WELLS YES NO 11 MOTORMASTER S IS ARE CONNECTED TO PROPER FANS IF EQUIPPED N A YES NO ARE WIND BAFFLES INSTALLED YES NO 12 RETURN ...

Page 231: ... ES INSTALLED YES NO 12 EVAPORATOR FAN STATUS SWITCH ES OPERATIONAL N A YES NO 13 WATER HAS BEEN PLACED IN THE DRAIN PAN TO CONFIRM PROPER DRAINAGE YES NO 14 AIR FILTERS HAVE BEEN INSTALLED YES NO 15 VERIFY PROPER EVAPORATOR CFM YES NO 1 ALL SERVICE VALVES OPEN YES NO 2 ALL PIPING HAS BEEN CHECKED FOR LEAKS WITH A LEAK DETECTOR YES NO 3 LOCATE REPAIR AND REPORT ANY LEAKS __________________________...

Page 232: ..._________________ CITY STATE PROVINCE ___________________________________________________ DATE _______________________________ 5 ADDITIONAL OIL ADDED TO THE CIRCUITS IF REQUIRED N A YES NO CIRCUIT A ________________________________________ oz ml CIRCUIT B ________________________________________ oz ml 6 OIL IS VISIBLE IN THE COMPRESSOR SIGHTGLASSES AT LEAST 1 8 TO 3 8 FULL AFTER CRANKCASE HAS BEEN...

Page 233: ...MBALANCE AB ______ V AC ______ V BC ______ V AVERAGE VOLTAGE AB AC BC 3 ______ V MAXIMUM DEVIATION FROM AVERAGE VOLTAGE ______ V VOLTAGE IMBALANCE MAXIMUM DEVIATION AVERAGE VOLTAGE x 100 ______ 9 VOLTAGE IMBALANCE LESS THAN 2 YES NO DO NOT START UNIT IF VOLTAGE IMBALANCE IS GREATER THAN 2 CONTACT LOCAL UTILITY FOR ASSISTANCE 10 EVAPORATOR FAN SWITCH ES OPERATIONAL IF INSTALLED N A YES NO 11 PROPER...

Page 234: ...AL REFRIGERANT CHARGE PRELIMINARY CHARGE PRELIMINARY CHARGE TRIM CHARGE TRIM CHARGE TOTAL CHARGE lb TOTAL CHARGE lb kg kg 4 RECORD COMPRESSOR CURRENT AT FULL LOAD COMPRESSOR L1 L2 L3 COMPRESSOR A1 COMPRESSOR A2 COMPRESSOR A3 COMPRESSOR B1 COMPRESSOR B2 COMPRESSOR B3 5 RECORD CONDENSER FAN MOTOR CURRENT CONDENSER FAN MOTOR L1 L2 L3 FAN MOTOR 1 FAN MOTOR 2 FAN MOTOR 3 FAN MOTOR 4 FAN MOTOR 5 FAN MOT...

Page 235: ...Password Enable PASS Service Password UNIT UNIT CONFIGURATION SIZE Unit Size NCKT Number of Refrig Ckts SZ A1 Compressor A1 Size SZ A2 Compressor A2 Size SZ A3 Compressor A3 Size SZ B1 Compressor B1 Size SZ B2 Compressor B2 Size SZ B3 Compressor B3 Size FAN S Fan Sequence Number A1 TY Compressor A1 Digital MAX T Maximum A1 Unload Time CCN CCN NETWORK CONFIGS CCNA CCN Address CCNB CCN Bus Number BA...

Page 236: ...Enable SP O R Space Temp Offset Range RAT T RAT Thermistor Type SAT T SAT Thermistor Type EMM EMM Module Installed OPT2 UNIT OPTIONS 2 CONTROLS C TYP Machine Control Type CTRL Control Method LOAD Loading Sequence Select LLCS Lead Lag Circuit Select DELY Minutes Off Time M MST MOTORMASTER MMR S Motormaster Select P GAN Head Pressure P Gain I GAN Head Pressure I Gain D GAN Head Pressure D Gain MIN S...

Page 237: ...G Remote Degrees Reset RT NO Return No Reset Temp RT F Return Full reset Temp RT DG Return Degrees Reset DMDC Demand Limit Select DM20 Demand Limit at 20 mA SHNM Loadshed Group Number SHDL Loadshed Demand Delta SHTM Maximum Loadshed Time DLS1 Demand Limit Switch 1 DLS2 Demand Limit Switch 2 SLCT SETPOINT AND RAMP LOAD RL S Ramp Load Select CRMP Cooling Ramp Loading SCHD Schedule Number Z GN Deadba...

Page 238: ...A1 EN A2 Enable Compressor A2 EN A3 Enable Compressor A3 EN B1 Enable Compressor B1 EN B2 Enable Compressor B2 EN B3 Enable Compressor B3 REV R Reverse Rotation Enable TCOM Two Comp Ckt Oil Mgmt BCST BROADCAST CONFIGURATION T D BC CCN Time Date Broadcast OAT B CCN OAT Broadcast G S BC Global Schedule Broadcst BC AK CCN Broadcast Ack er ...

Page 239: ...nt SPT O Space Temperature Offset ST P O Space T SP Plus Offset P CAP Percent Cap Requested L C ON Lo Cool On Setpoint H C ON Hi Cool On Setpoint L C OF Lo Cool Off Setpoint OAT L OAT Lockout Temperature HEAD HEAD PRESSURE SET POINTS H SP Head Setpoint On H SP F Head Setpoint Off F ON Fan On Set Point F OFF Fan Off Set Point F DLT Fan Stage Delta F TME Fan Delta Active Time ...

Page 240: ...SST A RETURN GAS TEMPERATURE TemperatureoCIR AoRGT A DISCHARGE GAS TEMPERATURE TemperatureoCIR AoD GAS SUCTION SUPERHEAT TEMP TemperatureoCIR AoSH A DISCHARGE PRESSURE PressureoPRC AoDP A SUCTION PRESSURE PressureoPRC AoSP A LIQUID LINE TEMPERATURE AT SERVICE VALVE LIQUID LINE PRESSURE AT SERVICE VALVE CIRCUIT B DATA SATURATED CONDENSING TEMP TemperatureoCIR BoSCT B SATURATED SUCTION TEMP Temperat...

Page 241: ... TO OWNER S PERSONNEL YES NO INSTRUCTION TIME _____ HOURS 10 AFTER 20 MINUTES OF OPERATION OIL LEVEL IS CORRECT IN SIGHTGLASS YES NO 11 RECORD OIL LEVELS BELOW COMPRESSORS MUST BE OFF COMP A1 COMP A2 COMP A3 COMP B1 COMP B2 COMP B3 a38 7404 ...

Page 242: ...___________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ ______________________________________________________...

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