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Consult application data section in the Product Data lit-

erature and job design requirements to determine flow rate
requirements for a particular installation.

Table 34 — Nominal and Minimum Cooler

Fluid Flow Rates

30GTN,R

UNIT

SIZE

NOMINAL FLOW

RATE*

MINIMUM FLOW

RATE (See Notes)

Gpm

L/s

Gpm

L/s

040

86

5.43

36.8

2.32

045

101

6.37

37.7

2.38

050

123

7.76

37.7

2.38

060

151

9.53

47.5

3.00

070

173

10.91

47.5

3.00

080,230B

192

12.11

66.7

4.20

090,245B

216

13.62

59.5

3.75

100,255B,270B

240

15.14

84.1

5.30

110,290B,315B

264

16.65

84.1

5.30

130

300

18.9

110

6.9

150,230A-255A

348

21.9

110

6.9

170,270A,330A/B,

360B (50 Hz)

384

24.2

120

7.5

190,290A,360A/B (60 Hz),

360A (50 Hz),390B

432

27.2

120

7.5

210,315A,390A,420A/B

480

30.2

148

9.3

LEGEND

ARI

— Air Conditioning and Refrigeration Institute

Gpm — Gallons per minute (U.S.)
L/s

— Liters per second

N

— Liters per kW

V

— Gallons per ton

*Nominal flow rates required at ARI conditions are 44 F (6.7 C) leaving-

fluid temperature, 54 F (12.2 C) entering-fluid temperature, 95 F
(35 C) ambient. Fouling factor is .00001 ft

2

•

hr

•

F/Btu (.000018 m

2

•

K/W).

NOTES:
1. Minimum flow based on 1.0 fps (0.30 m/s) velocity in cooler with-

out special cooler baffling.

2. Minimum Loop Volumes:

Gallons = V x ARI Cap. in tons
Liters

= N x ARI Cap. in kW

APPLICATION

V

N

Normal Air Conditioning

3

3.25

Process Type Cooling

6 to 10

6.5 to 10.8

Low Ambient Unit Operation

6 to 10

6.5 to 10.8

Operation Sequence —

During unit off cycle, crank-

case heaters are energized. If ambient temperature is below
36 F (2 C), cooler heaters (if equipped) are energized.

The unit is started by putting the ENABLE/OFF/REMOTE

CONTACT switch in ENABLE or REMOTE position. When
the unit receives a call for cooling (either from the internal

control or CCN network command or remote contact clo-
sure), the unit stages up in capacity to maintain the cooler
fluid set point. The first compressor starts 1

1

⁄

2

to 3 minutes

after the call for cooling.

The lead circuit can be specifically designated or ran-

domly selected by the controls, depending on how the unit
is field configured (for 040-070 sizes, Circuit A leads unless
an accessory unloader is installed on Circuit B). A field con-
figuration is also available to determine if the unit should
stage up both circuits equally or load one circuit completely
before bringing on the other.

When the lead circuit compressor starts, the unit starts with

a pumpout routine. On units with the electronic expansion
valve (EXV), compressor starts and continues to run with
the EXV at minimum position for 10 seconds to purge the
refrigerant lines and cooler of refrigerant. The EXV then moves
to 23% and the compressor superheat control routine takes
over, modulating the valve to feed refrigerant into the cooler.

On units with thermostatic expansion valve (TXV)

(30GTN,R040,045 units with brine option), head pressure
control is based on set point control. When the lead com-
pressor starts, the liquid line solenoid valve (LLSV) is kept
closed for 15 seconds by a time delay relay. The micro-
processor stages fans to maintain the set point temperature
specified by the controller. There is no pumpout sequence
during shutdown of TXV controlled chillers.

On all other units (EXV units), the head pressure is con-

trolled by fan cycling. The desired head pressure set point is
entered, and is controlled by EXV position or saturated con-
densing temperature measurement (T3 and T4). For proper
operation, maintain set point of 113 F (45 C) as shipped from
factory. The default head pressure control method is set point
control. The head pressure control can also be set to EXV
control or a combination of the 2 methods between circuits.

For all units, if temperature reset is being used, the unit

controls to a higher leaving-fluid temperature as the build-
ing load reduces. If demand limit is used, the unit may tem-
porarily be unable to maintain the desired leaving-fluid tem-
perature because of imposed power limitations.

On EXV units, when the occupied period ends, or when

the building load drops low enough, the lag compressors shut
down. The lead compressors continue to run as the EXV closes,
and until the conditions of pumpout are satisfied. If a fault
condition is signaled requiring immediate shutdown,
pumpout is omitted.

Loading sequence for compressors is shown in Tables 5A

and 5B.

66

Содержание 30GTN

Страница 1: ...ion Provide ad equate 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 available for breathing Product causes eye and skin irritation Decomposition products are hazardous DO NOT attempt to unbraze factory joint...

Страница 2: ... 74 START UP CHECKLIST CL 1 to CL 8 GENERAL Unit sizes 230 420 are modular units which are shipped as separate sections modules A and B Installation instruc tions specific to these units are shipped inside the individual modules See Table 1 for a listing of unit sizes and modular combinations For modules 230B 315B follow all general instructions as noted for unit sizes 080 110 For all remain ing m...

Страница 3: ...ions the chiller is allowed to operate and respond to the scheduling configuration CCN configuration and set point data See Fig 6 Emergency On Off Switch The Emergency On Off switch should only be used when it is required to shut the chiller off immediately Power to the MBB EMM CXB and marquee display is interrupted when this switch is off and all outputs from these modules will be turned off The ...

Страница 4: ...INPUT T1 J8 13 14 MBB Cooler Leaving Fluid T2 J8 11 12 MBB Cooler Entering Fluid T3 J8 21 22 MBB Saturated Condensing Temperature Ckt A T4 J8 15 16 MBB Saturated Condensing Temperature Ckt B T5 J8 24 25 MBB Cooler Suction Temperature Ckt A EXV Only T6 J8 18 19 MBB Cooler Suction Temperature Ckt B EXV Only T7 J5 11 12 EXV Compressor Suction Gas Temperature Ckt A EXV Only T8 J5 9 10 EXV Compressor S...

Страница 5: ...3 130 50 Hz 150 210 K2 CXB No Action 040 150 Energize Compressor B3 170 210 K3 CXB Energize Compressor A4 210 Energize Accessory Unloader A2 080 110 K4 CXB Energize Accessory Unloader B2 080 110 K5 CXB Energize Second Stage of Ckt A Condenser Fans 130 50 Hz 150 210 OFM3 OFM9 K6 CXB Energize Second Stage of Ckt B Condenser Fans 130 50 Hz 150 210 OFM4 OFM10 LEGEND OFM Outdoor Fan Motor And associate...

Страница 6: ...Fig 1 Typical Control Box 080 110 and Associated Modular Units Shown 6 ...

Страница 7: ...Fig 2 24 V Control Schematic Unit Sizes 040 070 7 ...

Страница 8: ...Fig 3 24 V Control Schematic Unit Sizes 080 110 230B 315B 8 ...

Страница 9: ...Fig 4 24 V Control Schematic Unit Sizes 130 210 230A 315A 330A B 420A B 9 ...

Страница 10: ...LED CCN CARRIER COMFORT NETWORK Fig 5 Main Base Board EMERGENCY ON OFF SWITCH ENABLE OFF REMOTE CONTACT SWITCH RESET BUTTON 30GTN R130 210 AND ASSOCIATED MODULES ONLY GFI CONVENIENCE OUTLET ACCESSORY ON 208 230V 460 AND 575V ONLY Fig 6 Enable Off Remote Contact Switch Emergency On Off Switch and Reset Button Locations 10 ...

Страница 11: ... cooler tube bundle T3 T4 SATURATED CONDENSING TEMPERATURE SENSORS These 2 thermistors are clamped to the out side of a return bend of the condenser coils T5 T6 COOLER SUCTION TEMPERATURE SEN SORS These thermistors are located next to the refrig erant inlet in the cooler head and are inserted into a friction fit well The sensor well is located directly in the refrigerant path These thermistors are...

Страница 12: ... AND ASSOCIATED MODULAR UNITS 130 210 AND ASSOCIATED MODULAR UNITS When thermistor is viewed from perspective where the compressor is on the left and the cooler is on the right Fig 8 Thermistor T3 and T4 Locations 12 ...

Страница 13: ...LEGEND EXV Electronic Expansion Valve Fig 9 Compressor Thermistor Locations T7 and T8 Fig 10 Typical Thermistor Location 30GTN R210 315A 390A 420A B Shown 13 ...

Страница 14: ... TB5 located in the unit control box Units on the CCN can be monitored from the space at the sensor through the RJ11 connector if desired To wire the RJ11 connector into the CCN Fig 12 IMPORTANT The cable selected for the RJ11 con nector wiring MUST be identical to the CCN commu nication bus wire used for the entire network Refer to table below for acceptable wiring MANUFACTURER PART NO Regular Wi...

Страница 15: ...CPCS board contains logic that can detect if the current to ground of any compressor wind ing exceeds 2 5 amps If this condition occurs the CPCS shuts down the compressor Ahigh pressure switch is wired in series between the MBB and the CR or CPCS On compressor A1 and B1 a loss of charge switch is also wired in series with the high pressure switch If the high pressure switch opens during operation ...

Страница 16: ... input for Ice Done switch requires field supplied dry contacts capable of handling a 5 vdc 1 to 20 mA load See Demand Limit and Temperature Reset sections on pages 43 and 45 for further details Capacity Control The control system cycles com pressors unloaders and hot gas bypass solenoids to main tain the user configured leaving chilled fluid temperature set point Entering fluid temperature is use...

Страница 17: ...ages of capacity This ratio value ranges from 100 to 100 If the next stage of capacity is a compres sor the control starts stops a compressor when the ratio reaches 100 100 If the next stage of capacity is an unloader the control deenergizes energizes an unloader when the ratio reaches 60 60 Unloaders are allowed to cycle faster than compressors to minimize the number of starts and stops on each c...

Страница 18: ...1 A2 B1 79 A1 A2 B1 7 92 A1 A2 B1 88 A1 A2 B1 8 100 A1 A2 B1 100 A1 A2 B1 090 245B 60 Hz 1 18 A1 18 B1 2 27 A1 27 B1 3 35 A1 B1 35 A1 B1 4 44 A1 B1 44 A1 B1 5 53 A1 B1 53 A1 B1 6 56 A1 A2 B1 62 A1 B1 B2 7 65 A1 A2 B1 71 A1 B1 B2 8 74 A1 A2 B1 80 A1 B1 B2 9 82 A1 A2 B1 B2 82 A1 A2 B1 B2 10 91 A1 A2 B1 B2 91 A1 A2 B1 B2 11 100 A1 A2 B1 B2 100 A1 A2 B1 B2 090 245B 50 Hz 1 14 A1 14 B1 2 21 A1 21 B1 3 ...

Страница 19: ...1 B2 11 100 A1 A2 B1 B2 100 A1 A2 B1 B2 130 60 Hz 1 2 3 4 5 6 7 8 9 10 11 14 21 28 35 42 58 64 71 87 93 100 A1 A1 A1 B1 A1 B1 A1 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 14 21 28 35 42 58 64 71 87 93 100 B1 B1 A1 B1 A1 B1 A1 B1 A1 B1 B2 A1 B1 B2 A1 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 130 50 Hz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 10 14 26 35 39 44 53 57 69 78 82 87 96 10...

Страница 20: ...2 76 81 91 96 100 A1 A1 A1 B1 A1 B1 A1 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 9 14 19 23 28 38 43 47 52 57 61 72 76 81 91 96 100 B1 B1 A1 B1 A1 B1 A1 B1 A1 B1 B2 A1 B1 B2 A1 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 B3 A1 A2 B1 B2 B3 A1 A2 B1 B2 B3 A1 A2 A3 B1 B...

Страница 21: ... A1 B1 49 A1 B1 4 65 A1 B1 57 A1 B1 5 73 A1 B1 73 A1 B1 6 76 A1 A2 B1 76 A1 A2 B1 7 92 A1 A2 B1 84 A1 A2 B1 8 100 A1 A2 B1 100 A1 A2 B1 080 230B 60 Hz 1 11 A1 15 B1 2 22 A1 30 B1 3 34 A1 44 B1 4 41 A1 B1 48 A1 B1 5 55 A1 B1 63 A1 B1 6 67 A1 B1 78 A1 B1 7 78 A1 B1 85 A1 A2 B1 8 89 A1 A2 B1 100 A1 A2 B1 9 100 A1 A2 B1 080 230B 50 Hz 1 8 A1 13 B1 2 17 A1 25 B1 3 25 A1 38 B1 4 33 A1 B1 50 A1 B1 5 46 A...

Страница 22: ...3 B1 3 20 A1 20 B1 4 26 A1 B1 26 A1 B1 5 33 A1 B1 33 A1 B1 6 40 A1 B1 40 A1 B1 7 43 A1 A2 B1 43 A1 B1 B2 8 50 A1 A2 B1 50 A1 B1 B2 9 57 A1 A2 B1 57 A1 B1 B2 10 63 A1 A2 B1 63 A1 B1 B2 11 70 A1 A2 B1 70 A1 B1 B2 12 74 A1 A2 B1 B2 74 A1 A2 B1 B2 13 80 A1 A2 B1 B2 80 A1 A2 B1 B2 14 89 A1 A2 B1 B2 87 A1 A2 B1 B2 15 93 A1 A2 B1 B2 93 A1 A2 B1 B2 16 100 A1 A2 B1 B2 100 A1 A2 B1 B2 110 290B 315B 60 Hz 1 ...

Страница 23: ...39 43 47 56 64 65 74 82 83 91 100 B1 B1 B1 A1 B1 A1 B1 A1 B1 B2 A1 B1 B2 A1 B1 B2 A1 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 150 230A 245A 255A 60 Hz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 6 11 15 24 33 38 42 49 53 58 66 75 80 85 91 95 100 A1 A1 A1 A1 B1 A1 B1 A1 B1 A1 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1...

Страница 24: ...1 B1 A1 B1 A1 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 5 9 14 14 19 23 28 29 34 38 43 47 48 52 57 61 63 67 72 76 81 82 87 91 96 100 B1 B1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 B2 A1 ...

Страница 25: ... B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 A4 B1 B2 B3 A1 A2 A3 A4 B1 B2 B3 A1 A2 A3 A4 B1 B2 B3 9 14 17 21 25 37 40 44 48 51 56 67 71 75 78 82 86 92 96 100 B1 B1 A1 B1 A1 B1 A1 B1 A1 B1 B2 A1 B1 B2 A1 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 A1 A2 B1 B2 B3 A1 A2 B1 B2 B3 A1 A2 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 B1 B2 B3 A1 A2 A3 A4 B1 B2 B3 A1 A2 A3 A4 B1 B2 B3 A1 A2 A3 ...

Страница 26: ...ity Load Unload Factor The larger this value is set the longer the control will delay between adding or removing stages of capacity Figure 16 shows how compressor starts can be re duced over time if the leaving water temperature is allowed to drift a larger amount above and below the set point This value should be set in the range of 3 0 to 4 0 for systems with small loop volumes First Stage Overr...

Страница 27: ...h change of a fan stage the control will wait for one minute for head pressure to stabilize unless T3 and T4 is greater than 125 F 51 6 C in which case all MBB controlled fans start immediately If T3 and T4 are greater than 95 F 35 0 C just prior to circuit start up all MBB controlled fan stages are turned on to prevent excessive dis charge pressure during pull down Fan sequences are shown in Fig ...

Страница 28: ...5 6 7 8 B1 Second Stage of Condenser Fans 30GTN R130 60 Hz POWER 5 7 Compressor No A1 6 8 Compressor No B1 1 2 A1 First Stage of Condenser Fans 3 4 9 10 B1 Second Stage of Condenser Fans 30GTN R130 50 Hz 150 210 230A 315A 330A B 420A B POWER 5 7 Compressor No A1 6 8 Compressor No B1 1 11 A1 First Stage of Condenser Fans Circuit A 3 9 A2 Second Stage of Condenser Fans Circuit A 2 12 B1 First Stage ...

Страница 29: ... condenser fan cooler pump and alarm relays by changing the item values from OFF to ON These discrete outputs are turned off if there is no keypad activity for 10 minutes Use arrow keys to select desired percentage when testing expansion valves When testing compressors the lead compressor must be started first All compressor outputs can be turned on but the control will limit the rate by staging o...

Страница 30: ...t A B Outputs OUTS Ckt A Temperatures CIR A Ckt B Pressures PRC B Head Pressure HEAD Ckt A B CRCT Ckt A CIR A Machine UNIT Unit Date DATE Reset Alarms RCRN Compressor Run Hours HOUR Compressor Tests COMP Ckt B Temperatures CIR B Unit Analog 4 20 Ckt B CIR B Options 1 OPT1 Schedule SCHD Alarm History HIST Compressor Starts STRT Options 2 OPT2 Reset History RHIS Temperature Reset RSET Set Point Sele...

Страница 31: ... OF MONTH 01 31 YEAR XXXX YEAR OF CENTURY RUN ENTER HRS U XXXX MACHINE OPERATING HOURS STR U XXXX MACHINE STARTS HOUR ENTER HRS A XXXX CIRCUIT A RUN HOURS HRS B XXXX CIRCUIT B RUN HOURS HR A1 XXXX COMPRESSOR A1 RUN HOURS HR A2 XXXX COMPRESSOR A2 RUN HOURS HR A3 XXXX COMPRESSOR A3 RUN HOURS HR A4 XXXX COMPRESSOR A4 RUN HOURS HR B1 XXXX COMPRESSOR B1 RUN HOURS HR B2 XXXX COMPRESSOR B2 RUN HOURS HR B...

Страница 32: ...B 315B Fans 3 4 9 10 130 60 Hz Fan 2 130 50 Hz 150 170 230A 270A 330A B 360B 50 Hz Fans 2 12 190 210 290A 315A 360A 360B 60 Hz 390A B 420A B FR B2 ON OFF FAN B2 RELAY Fans 4 10 130 50 Hz 150 210 230A 315A 330A B 420A B EXV B 0 100 EXV OPEN CLR P ON OFF COOLER PUMP RELAY RMT A ON OFF REMOTE ALARM RELAY COMP ENTER CC A1 ON OFF COMPRESSOR A1 RELAY CC A2 ON OFF COMPRESSOR A2 RELAY CC A3 ON OFF COMPRES...

Страница 33: ... DISPLAY ITEM EXPANSION COMMENT PRC A ENTER DP A XXX X PSIG DISCHARGE PRESSURE SP A XXX X PSIG SUCTION PRESSURE PRC B ENTER DP B XXX X PSIG DISCHARGE PRESSURE SP B XXX X PSIG SUCTION PRESSURE Table 11 Set Point Mode and Sub Mode Directory SUB MODE KEYPAD ENTRY ITEM DISPLAY ITEM EXPANSION COMMENT COOL ENTER CSP 1 XXX X F COOLING SETPOINT 1 Default 44 F CSP 2 XXX X F COOLING SETPOINT 2 Default 44 F ...

Страница 34: ...N OFF DUAL SETPOINT SWITCH CRCT ENTER FKA1 ON OFF COMPRESSOR A1 FEEDBACK FKA2 ON OFF COMPRESSOR A2 FEEDBACK FKA3 ON OFF COMPRESSOR A3 FEEDBACK FKA4 ON OFF COMPRESSOR A4 FEEDBACK OIL A OPEN CLSE OIL PRESSURE SWITCH A FKB1 ON OFF COMPRESSOR B1 FEEDBACK FKB2 ON OFF COMPRESSOR B2 FEEDBACK FKB3 ON OFF COMPRESSOR B3 FEEDBACK FKB4 ON OFF COMPRESSOR B4 FEEDBACK OIL B OPEN CLSE OIL PRESSURE SWITCH B 4 20 E...

Страница 35: ...B1 RELAY FR B2 ON OFF FAN B2 RELAY CC B1 ON OFF COMPRESSOR B1 RELAY CC B2 ON OFF COMPRESSOR B2 RELAY CC B3 ON OFF COMPRESSOR B3 RELAY CC B4 ON OFF COMPRESSOR B4 RELAY UL B1 ON OFF UNLOADER B1 RELAY UL B2 ON OFF UNLOADER B2 RELAY EXV B XXX X EXV OPEN LEGEND EXV Electronic Expansion Valve Table 15 Configuration Mode and Sub Mode Directory SUB MODE KEYPAD ENTRY ITEM DISPLAY ITEM EXPANSION COMMENT DIS...

Страница 36: ... X FAN STAGING SELECT 1 2 Stage Independent 190 210 290A 315A 360B 60 Hz 390A B 420A B 2 3 Stage Independent 130 50 Hz 150 170 230A 270A 330A B 360B 50 Hz 3 2 Stage Common 040 090 230B 245B 4 3 Stage Common 100 110 130 60 Hz 255B 315B OPT1 ENTER FLUD X COOLER FLUID Default 1 1 Water 2 Medium Temperature Brine 3 Low Temperature Brine Not Supported HGB S YES NO HOT GAS BYPASS SELECT HPCM X HEAD PRES...

Страница 37: ... DGRC XX X DF DEGREES COOL RESET Default 0 F Range 30 to 30 F DMDC X DEMAND LIMIT SELECT Default 0 0 None 1 Switch 2 4 to 20 mA Input 3 CCN Loadshed DM20 XXX DEMAND LIMIT AT 20 MA Default 100 Range 0 to 100 SHNM XXX LOADSHED GROUP NUMBER Default 0 Range 0 to 99 SHDL XXX LOADSHED DEMAND DELTA Default 0 Range 0 to 60 SHTM XXX MIN MAXIMUM LOADSHED TIME Default 60 minutes Range 0 to 120 minutes DLS1 X...

Страница 38: ...25 Value flashes 75 Select 75 ENTER 75 Change accepted ESCAPE CRT1 75 Item Value Units scrolls again CRT2 0 Range 0 to 125 F ENTER 0 Scrolling stops ENTER 0 Value flashes 50 Select 50 ENTER 50 Change accepted ESCAPE CRT2 50 Item Value Units scrolls again DGRC 0 Range 30 to 30 F ENTER 0 Scrolling stops ENTER 0 Value flashes 10 Select 10 ENTER 10 Change accepted ESCAPE DGRC 10 Item Value Units scrol...

Страница 39: ...DSBL LEAD LAG BALANCE SELECT ENTER DSBL Scrolling stops ENTER DSBL Value flashes ENBL Select Enable ENTER ENBL Change accepted ESCAPE LLBL ENBL SLVA 0 SLAVE ADDRESS ENTER 0 Scrolling stops ENTER 0 Value flashes 6 Select 6 ENTER 6 Change accepted ESCAPE SLVA 6 MSSL MAST MASTER SLAVE SELECT No change needed Default set for Master LLEN DSBL LEAD LAG CHILLER ENABLE ENTER DSBL Scrolling stops ENTER DSB...

Страница 40: ... ENTER MON O XX XX MONDAY OCCUPIED TIME Range 00 00 to 23 59 Default 00 00 MON U XX XX MONDAY UNOCCUPIED TIME Range 00 00 to 23 59 Default 00 00 TUE O XX XX TUESDAY OCCUPIED TIME Range 00 00 to 23 59 Default 00 00 TUE U XX XX TUESDAY UNOCCUPIED TIME Range 00 00 to 23 59 Default 00 00 WED O XX XX WEDNESDAY OCCUPIED TIME Range 00 00 to 23 59 Default 00 00 WED U XX XX WEDNESDAY UNOCC TIME Range 00 00...

Страница 41: ...MMENT MODE ENTER MD01 ON OFF FSM CONTROLLING CHILLER MD02 ON OFF WSM CONTROLLING CHILLER MD03 ON OFF MASTER SLAVE CONTROL MD04 ON OFF LOW SOURCE PROTECTION MD05 ON OFF RAMP LOAD LIMITED MD06 ON OFF TIMED OVERRIDE IN EFFECT MD07 ON OFF LOW COOLER SUCTION TEMP A MD08 ON OFF LOW COOLER SUCTION TEMP B MD09 ON OFF SLOW CHANGE OVERRIDE MD10 ON OFF MINIMUM OFF TIME ACTIVE MD11 ON OFF LOW SUCTION SUPERHEA...

Страница 42: ...UPERHEAT A Circuit A capacity may be limited due to operation of this mode Control will attempt to correct this situation for up to 5 minutes before shutting the circuit down See Alarms and Alerts section for more information 12 LOW SUCTION SUPERHEAT B Circuit B capacity may be limited due to operation of this mode Control will attempt to correct this situation for up to 5 minutes before shutting ...

Страница 43: ...xternally powered 4 to 20 mA signal Accessory sensors must be used for OAT and SPT reset HH79NZ014 for OAT and HH51BX006 for SPT The Energy Management Module EMM must be used for tem perature reset using a 4 to 20 mA signal To use the return reset four variables must be configured In the Configuration mode under the sub mode RSET items CRST CRT1 CRT2 and DGRC must be set properly See Table 25 on p...

Страница 44: ...equired Connect to EMM J6 2 5 2 Outdoor Air Temperature Connect to TB5 7 8 3 Return Fluid Connect to TB5 5 6 4 Space Temperature CRT1 XXX X F NO COOL RESET TEMP Default 125 F 51 7 C Range 0 to125 F Set to 4 0 for CRST 1 CRT2 XXX X F FULL COOL RESET TEMP Default 0 F 17 8 C Range 0 to 125 F Set to 20 0 for CRST 1 DGRC XX X F DEGREES COOL RESET Default 0 F 0 C Range 30 to 30 F 16 7 to 16 7 C The foll...

Страница 45: ... See Table 25 EXTERNALLY POWERED DEMAND LIMIT 4 to 20 mA Controlled To configure Demand Limit for 4 to 20 mA control set the Demand Limit Select DMDC to 2 Then configure the Demand Limit at 20 mA DM20 to the maxi mum loadshed value desired The control will reduce allow able capacity to this level for the 20 mA signal See Table 26 and Fig 21 DEMAND LIMIT CCN Loadshed Controlled To con figure Demand...

Страница 46: ... controlling operating suction pressure or super heat there are a number of checks that can be made using the quick test and initialization features built into the ComfortLink control Follow the procedure below to diagnose and correct EXV problems STEP1 CHECK PROCESSOR EXV OUTPUTS Check EXV output signals at the J6 and J7 terminals of the EXV board Turn unit power off Connect the positive lead of ...

Страница 47: ...ce valves and close compressor circuit breakers Open liquid line service valve Turn the ENABLE OFF REMOTE contact switch and allow unit to operate Verify proper operation of unit This process of opening and closing the EXV EXV A EXV B under OUTS can be repeated by using these Service Test steps and recycling the control as described in the pre ceding steps If the valve does not operate as describe...

Страница 48: ...wire or wiring error 61 Alarm Cooler Entering Fluid Thermistor Failure T2 Thermistor outside range of 40 to 245 F 40 to 118 C Chiller shutdown after pumpdown complete Automatic Thermistor failure damaged cable wire or wiring error 64 Alert Circuit A Saturated Con densing Thermistor Fail ure T3 Thermistor outside range of 40 to 245 F 40 to 118 C Circuit A shutdown after pumpdown com plete EXV only ...

Страница 49: ...uit shutdown without going through pump down 1 Automatic reset if corrected 2 Manual Faulty expansion valve or EXV board low re frigerant charge plugged filter drier faulty suction gas ther mistor T7 or cooler thermistor T5 low cooler fluid flow 117 Alert Circuit B Low Cooler Suction Temperature 1 If the saturated suction temperature is 24 to 29 F 13 3 to 16 1 C below cooler LWT and is also 2 F 1 ...

Страница 50: ...r failed CXB module 172 Alarm Loss of Communica tion with EXV MBB loses communi cation with EXV Chiller shutdown with out going through pumpdown Automatic Wiring error faulty wiring or failed EXV module 173 Alert Loss of Communica tion with EMM MBB loses communi cation with EMM 4 to 20 mA tempera ture reset disabled Demand Limit set to 100 4 to 20 mA set point disabled Automatic Wiring error fault...

Страница 51: ...shutdown with out going through pumpdown Cooler pump shut off if con trol enabled Manual Faulty cooler pump low water flow plugged fluid strainer 950 Alert Loss of Communica tion with WSM No communications have been received by MBB within 5 minutes of last transmission WSM forces removed Chiller runs under own control Automatic Failed module wiring error failed trans former loose connec tion plug ...

Страница 52: ...s follows Petroleum Specialties Inc Cryol 150 factory oil charge Texaco Inc Capella WF 32 Witco Chemical Co Suniso 3GS Table 28 Oil Charge COMPRESSOR OIL REQUIRED Pts L 06E250 14 6 6 06E265 19 9 0 06E275 19 9 0 06E299 19 9 0 Do not reuse drained oil or any oil that has been exposed to atmosphere Cooler The cooler is easily accessible from the cooler side of the unit The refrigerant feed components...

Страница 53: ...e coupling Damage to the ferrules will result b Reinstall thermistor T1 well and insert thermistor T1 into well c Install thermistor T2 entering fluid temperature so that it is not touching an internal refrigerant tube but so that it is close enough to sense a freeze condition The recommended distance is 1 8 in 3 2 mm from the cooler tube Tighten the packing nut finger tight and then tighten 11 4 ...

Страница 54: ...into the tube sheet An 8 crush can be achieved by setting the torque on the gun at 48 to 50 in lb 5 4 to 5 6 N m The following Elliott Co tube rolling tools are required B3400 Expander Assembly B3401 Cage B3405 Mandrel B3408 Rolls Place one drop of Loctite No 675 or equivalent on top of tube prior to rolling This material is intended to wick into the area of the tube that is not rolled into the tu...

Страница 55: ...in corrosive environments should have coil clean ing as part of a planned maintenance schedule In this type of application all accumulations of dirt should be cleaned off the coil Do not use high pressure water or air to clean coils fin damage may result Condenser Fans Each fan is supported by a formed wire mount bolted to fan deck and covered with a wire guard The exposed end of fan motor shaft i...

Страница 56: ... of the electronic expansion valve stepper motor to maintain 29 F 16 C superheat The superheat leaving cooler is approximately 3 to 5 F 2 to 3 C or less Because EXV status is communicated to the Main Base Board MBB and is controlled by the EXV modules see Fig 27 it is possible to track the valve position By this means head pressure is controlled and unit is protected against loss of charge and a f...

Страница 57: ... on servicing filter driers LIQUID LINE SOLENOID VALVE All TXV units have a liquid line solenoid valve to prevent liquid refrigerant mi gration to low side of system during the off cycle LIQUID LINE SERVICE VALVE This valve is located immediately ahead of filter drier and has a 1 4 in Schrader connection for field charging In combination with compres sor discharge service valve each circuit can be...

Страница 58: ...mperature determined from thermistor voltage reading should be close 5 F 3 C if care was taken in applying thermocouple and taking readings 2 If a more accurate check is required unit must be shut down and thermistor removed and checked at a known temperature freezing point or boiling point of water us ing either voltage drop measured across thermistor at the J8 or J5 terminals by determining the ...

Страница 59: ...7 1 412 3 906 88 1 388 3 814 89 1 365 3 726 90 1 342 3 640 91 1 319 3 556 92 1 296 3 474 93 1 274 3 395 94 1 253 3 318 95 1 231 3 243 96 1 210 3 170 97 1 189 3 099 98 1 169 3 031 99 1 148 2 964 100 1 128 2 898 101 1 109 2 835 102 1 089 2 773 103 1 070 2 713 104 1 051 2 655 105 1 033 2 597 106 1 015 2 542 107 0 997 2 488 108 0 980 2 436 109 0 963 2 385 110 0 946 2 335 111 0 929 2 286 112 0 913 2 23...

Страница 60: ...1 24 1 716 5 225 25 1 667 5 000 26 1 619 4 786 27 1 571 4 583 28 1 525 4 389 29 1 480 4 204 30 1 436 4 028 31 1 393 3 861 32 1 351 3 701 33 1 310 3 549 34 1 270 3 404 35 1 231 3 266 36 1 193 3 134 37 1 156 3 008 38 1 120 2 888 39 1 085 2 773 40 1 051 2 663 41 1 019 2 559 42 0 987 2 459 43 0 956 2 363 44 0 926 2 272 45 0 896 2 184 46 0 868 2 101 47 0 841 2 021 48 0 814 1 944 49 0 788 1 871 50 0 763...

Страница 61: ... 88 2 173 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...

Страница 62: ...10 449 25 2 500 10 000 26 2 445 9 571 27 2 391 9 164 28 2 337 8 776 29 2 284 8 407 30 2 231 8 056 31 2 178 7 720 32 2 127 7 401 33 2 075 7 096 34 2 025 6 806 35 1 975 6 530 36 1 926 6 266 37 1 878 6 014 38 1 830 5 774 39 1 784 5 546 40 1 738 5 327 41 1 692 5 117 42 1 648 4 918 43 1 605 4 727 44 1 562 4 544 45 1 521 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...

Страница 63: ... processor board stops all com pressors in circuit During start up switch is bypassed for 2 minutes CRANKCASE HEATERS Each compressor has a 180 w crankcase heater to prevent absorption of liquid re frigerant by oil in crankcase when compressor is not run ning Heater power source is auxiliary control power inde pendent of main unit power This assures compressor protection even when main unit power ...

Страница 64: ...quip ment to which the chiller supplies liquid Consult manu facturer s instructions If the unit has field installed ac cessories be sure all are properly installed and wired correctly Refer to unit wiring diagrams 2 Backseat open compressor suction and discharge shut off valves Close valves one turn to allow refrigerant pres sure to reach the test gages 3 Open liquid line service valves 4 Fill the...

Страница 65: ...r master III accessory for more details Brine duty application below 38 F 3 3 C LCWT for chiller normally requires factory modification Contact your Carrier representative for applicable LCWT range for standard water cooled chiller in a specific application VOLTAGE Main Power Supply Minimum and maximum acceptable supply voltages are listed in the Installation Instructions Unbalanced 3 Phase Supply...

Страница 66: ...igured for 040 070 sizes Circuit A leads unless an accessory unloader is installed on Circuit B A field con figuration is also available to determine if the unit should stage up both circuits equally or load one circuit completely before bringing on the other When the lead circuit compressor starts the unit starts with a pumpout routine On units with the electronic expansion valve EXV compressor s...

Страница 67: ... 100 8 0 EXVAMINP 13 EXV Circ B Min Position 0 to 100 8 0 EXVBMINP 14 Refrigerant 1 R22 2 R134A 1 REFRIG T 15 Low Pressure Setpoint 3 to 60 10 0 PSI LOW PRES 16 Fan Staging Select 1 2 Stage indpt 2 3 Stage indpt 3 2 Stage common 4 3 Stage common 1 FAN TYPE OPTIONS1 Options Configuration DESCRIPTION STATUS DEFAULT POINT 1 Cooler Fluid 1 Water 2 Med Brine 3 Low Brine 1 FLUIDTYP 2 Hot Gas Bypass Sele...

Страница 68: ...Deadband Multiplier 1 0 to 4 0 1 0 Z GAIN DISPLAY STDU SETUP DESCRIPTION STATUS DEFAULT UNITS POINT 1 STDU Password nnnn 1111 PASSWORD 2 Password Enable enable disable enable PASS EBL 3 Metric Display Off On Off DISPUNIT 4 Language 0 ENGLISH 1 FRANCAIS 2 ESPANOL 3 PORTUGUES 0 LANGUAGE CONFIG TIMED OVERRIDE SETUP DESCRIPTION STATUS DEFAULT UNITS POINT 1 Schedule Number 0 99 0 SCHEDNUM 2 Override Ti...

Страница 69: ... DLSWSP1 13 Demand Limit Switch 2 0 to 100 50 DLSWSP2 14 LEAD LAG 15 Lead Lag Enable Enable Disable Disable LL ENA 16 Master Slave Select Slave Master Master MS SEL 17 Slave Address 0 to 239 0 SLV ADDR 18 Lead Lag Balance Select Enable Disable Disable LL BAL 19 Lead Lag Balance Delta 40 to 400 168 hours LL BAL D 20 Lag Start Delay 0 to 30 5 mins LL DELAY BRODEFS Broadcast POC Definition Table DESC...

Страница 70: ... values DESCRIPTION STATUS UNITS POINT FORCEABLE 1 Circuit A Analog Values 2 Percent Total Capacity 0 100 CAPA T N 3 Percent Available Cap 0 100 CAPA A N 4 Discharge Pressure nnn n PSI DP A N 5 Suction Pressure nnn n PSI SP A N 6 Saturated Condensing Tmp snnn n F TMP SCTA N 7 Saturated Suction Temp snnn n F TMP SSTA N 8 Compressor Suction Temp snnn n F CTA TMP N 9 Suction Superheat Temp snnn n F S...

Страница 71: ... N 6 Compressor B2 Relay ON OFF K B2 RLY N 7 Compressor B3 Relay ON OFF K B3 RLY N 8 Compressor B4 Relay ON OFF K B4 RLY N 9 Unloader B1 Relay ON OFF UNL B1 N 10 Unloader B2 Relay ON OFF UNL B2 N 11 Hot Gas Bypass Relay ON OFF HGAS N OPTIONS Unit Parameters DESCRIPTION STATUS UNITS POINT FORCEABLE 1 UNIT Analog Values 2 Cooler Entering Fluid snnn n F COOL EWT N 3 Cooler Leaving Fluid snnn n F COOL...

Страница 72: ...mpressor B2 Starts nnnnn CY B2 23 Compressor B3 Starts nnnnn CY B3 24 Compressor B4 Starts nnnnn CY B4 ALARMS DESCRIPTION STATUS UNITS POINT 1 Active Alarm 1 Axxx ALARM01C 2 Active Alarm 2 Axxx ALARM02C 3 Active Alarm 3 Axxx ALARM03C 4 Active Alarm 4 Axxx ALARM04C 5 Active Alarm 5 Axxx ALARM05C 6 Active Alarm 6 Axxx ALARM06C 7 Active Alarm 7 Axxx ALARM07C 8 Active Alarm 8 Axxx ALARM08C 9 Active Al...

Страница 73: ...Hi Tmp Cool Lo Tmp Heat ON OFF MODE 18 SETPOINT DESCRIPTION STATUS UNITS POINT DEFAULTS 1 COOLING 2 Cool Setpoint 1 20 to 70 F CSP1 44 3 Cool Setpoint 2 20 to 70 F CSP2 44 4 RAMP LOADING 5 Cooling Ramp Loading 0 2 to 2 0 F min CRAMP 1 0 6 HEAD PRESSURE 7 Head Press Stpt A 80 to 140 F HSP A 113 8 Head Press Stpt B 80 to 140 F HSP B 113 LID DEFAULT SCREEN DEFINITION TABLE TYPE 19 HEX DESCRIPTION STA...

Страница 74: ...SCRIPTION STATUS POINT WSM Active Yes WSMSTAT Chilled water temp 46 5 F CHWTEMP Equipment status On CHLRST Commanded state Enable Disable None CHLRENA CHW setpoint reset value 2 0 F CHWRVAL Current CHW setpoint 44 0 F CHWSTPT OCCUPANCY MAINTENANCE TABLE OCCUPANCY SUPERVISORY DESCRIPTION STATUS POINT Current Mode 1 Occup 0 1 MODE Current Occup Period 0 8 PER NO Timed Override in Effect Yes No OVERL...

Страница 75: ......

Страница 76: ...anufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 Tab 5c PC 903 Catalog No 533 099 Printed in U S A Form 30GTN 1T Pg 76 5 99 Replaces New ...

Страница 77: ... M S S MTR MTR 4 M S MTR COOLER MODEL MANUFACTURED BY SERIAL DATE TYPE OF EXPANSION VALVES check one EXV TXV AIR HANDLING EQUIPMENT MANUFACTURER MODEL SERIAL ADDITIONAL AIR HANDLING UNITS AND ACCESSORIES CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 T...

Страница 78: ...TING IS THE CWP ROTATION CORRECT CWP MOTOR AMPERAGE Rated Actual C Unit Start Up insert check mark as each item is completed CHECK THAT THE CHILLER HAS BEEN PROPERLY INTERLOCKED WITH THE AUXILIARY CONTACTS OF THE CHILLED FLUID PUMP STARTER ASSURE THAT THE UNIT IS SUPPLIED WITH CORRECT CONTROL VOLTAGE POWER 115 V FOR 208 230 460 AND 575 V UNITS 230 V FOR 380 AND 380 415 UNITS ASSURE CRANKCASE HEATE...

Страница 79: ...ESSURE DROP PLOT COOLER PRESSURE DROP ON PERFORMANCE DATA CHART LOCATED IN PRODUCT DATA LITERATURE TO DETERMINE TOTAL GPM L s TOTAL GPM L s UNIT S RATED MIN GPM L s GPM L s PER TON UNIT S RATED MIN PRESSURE DROP Refer to product data literature JOB S SPECIFIED GPM L s if available NOTE IF UNIT HAS LOW FLUID FLOW FIND SOURCE OF PROBLEM CHECK FLUID PIPING IN LINE FLUID STRAINER SHUT OFF VALVES CWP R...

Страница 80: ...ssor 1 to 4 1 Compressor B1 Cylinders 4 or 6 6 EXV Module Installed No Yes Yes EXV Superheat Setpoint 10 to 40 29 0 F EXV Superheat Offset 20 to 20 0 0 F EXV Circ A Min Position 0 to 100 8 0 EXV Circ B Min Position 0 to 100 8 0 Refrigerant 1 R22 2 R134A 1 Fan Staging Select 1 2 Stage indpt 2 3 Stage indpt 3 2 Stage common 4 3 Stage common 1 PRESS ESCAPE KEY TO DISPLAY UNIT PRESS DOWN ARROW KEY TO ...

Страница 81: ...ION BELOW RESETCON Temperature Reset and Demand Limit DESCRIPTION STATUS DEFAULT UNITS VALUE COOLING RESET Cooling Reset Type 0 No Reset 1 4 20 ma input 2 External temp OAT 3 Return fluid 4 External temp SPT 0 No Cool Reset Temp 0 to 125 0 0 F Full Cool Reset Temp 0 to 125 125 0 F Degrees Cool Reset 30 to 30 0 0 F DEMAND LIMIT Demand Limit Select 0 None 1 External switch input 2 4 20 ma input 3 Lo...

Страница 82: ...0 F 113 Head Press Stpt B 80 to 140 F 113 USE ARROW ESCAPE KEYS TO ILLUMINATE TEMPERATURES LED PRESS ENTER TO DISPLAY UNIT PRESS ENTER AND USE THE ARROW KEYS TO RECORD TEMPERATURES FOR T1 AND T2 BELOW RECORD T9 AND T10 IF INSTALLED PRESS ESCAPE TO DISPLAY UNIT AGAIN AND PRESS THE DOWN ARROW KEY TO DISPLAY CIR A PRESS ENTER AND USE THE ARROW KEYS TO RECORD TEMPERATURES FOR T3 T5 AND T7 BELOW PRESS ...

Страница 83: ...TO TURN THE OUTPUT ON PRESS ENTER SO THE ON DISPLAY FLASHES PRESS THE DOWN ARROW KEY AND THEN ENTER TO TURN THE OUTPUT OFF OUTPUTS WILL ALSO BE TURNED OFF OR SENT TO 0 WHEN ANOTHER OUTPUT IS TURNED ON USE THE ARROW KEYS TO SELECT THE DESIRED PERCENTAGE FOLLOWED BY THE ENTER KEY WHEN TESTING EXPANSION VALVES CHECK OFF THE FOLLOWING THAT APPLY AFTER BEING TESTED FR A1 CHECK ROTATION FR A2 CHECK ROTA...

Страница 84: ...nufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 Tab 5c PC 903 Catalog No 533 099 Printed in U S A Form 30GTN 1T Pg CL 8 5 99 Replaces New ...

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