Heat Controller GeoLogix HTS Series Installation, Operation And Maintenance Manual Download Page 27

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T h e Q u a l i t y L e a d e r i n C o n d i t i o n i n g A i r

R e s i d e n t i a l S p l i t - 6 0 H z R 4 1 0 A

R e v. : 0 3 A u g u s t , 2 0 1 2

www.heatcontroller.com

Figure 26a: DXM2 Layout and Connections

Alarm
Relay

Comp

Relay

AL1

24Vdc

EH1
EH2

Off On

JW3

OVR

ESD

NSB

AL2

JW1

Acc1

Relay

Acc2

Relay

COM1

NC1

NO1

COM2

NC2

NO2

LT1
LT1
LT2
LT2

LP
LP

Status

Fault

CCG

(240Vac)

Com

N.O.

Fan Enable

Micro

Off On

COH

COM

AO2

P11

Gnd

P10

T2 T2 T3 T3 T4 T4

T5 T6 T6

A0-1 A0-2

Off On

Relay

CCH

Relay

Test

B-

Gnd

A+ 24V

(240Vac)

Fan Speed

N.O.

N.C.

12V

OUT
Gnd

P12

1 2 3 4

1 2 3 4 5 6 7 8

Service tool

connection

Communicating

stat connection

Conventional

stat connection

Cabinet

temperature

sensor

(with variable

speed pump)

24V to compressor

second-stage solenoid

for Y2/full

load capacity

Use 4 mounting screws
#6 sheet metal screw
1” long

Configure

modulating valve

or variable

speed pump

ariable

speed pump

Entering

water temp

Leaving

water temp

Leaving

air temp

Factory low

voltage molex

connection for

electric heat

harness

Factory low

voltage molex

connection for

unit harness

Entering Hot water

mperature

Compressor Discharge

temperature

ECM Motor

Connection

Test Button to

Speed up Time Delays

Communications

and HWG

Settings

Water Coil

Low Temp

Limit Setting

Summary of Contents for GeoLogix HTS Series

Page 1: ...ration and Maintenace Manual GeoLogix HTS Series Split System Two Stage 2 5 Tons 1900 Wellworth Ave Jackson Michigan 49203 Ph 517 0787 2100 Fax 517 787 9341 www heatcontroller com THE QUALITY LEADER IN CONDITIONING AIR ...

Page 2: ...l Low Voltage Wiring 24 Low Water Temperature Cutout Selection 24 Thermostat Wiring 25 DXM2 Controls 26 27 Wire Diagram 28 Unit Commissioning and Operating Conditions 29 Unit Start Up and Operating Conditions 30 Unit Start Up Procedure 30 31 Unit Operating Conditions 32 33 Preventive Maintenance 34 Troubleshooting 35 37 DXM2 Process Flow Chart 38 Functional Performance Troubleshooting 39 42 Table ...

Page 3: ...R FLOW CONFIGURATION VOLTAGE CONTROLS REVISION LEVEL HEAT EXCHANGER OPTIONS CABINET SUPPLY AIR FLOW MOTOR CONFIGURATION HT 1 2 HT Heat Controller Two Stage SERIES S 3 S SPLIT CONFIGURATION Standard Cupro Nickel N WATER CIRCUIT OPTIONS 048 060 0 Residential 0 None N NOT APPLICABLE N NOT APPLICABLE Copper C B Current Revision DXM2 Effective 6 29 12 C CXM Revision A only D DXM2 Revision B only A Obso...

Page 4: ...ituation or an unsafe practice which if not avoided could result in minor or moderate injury or product or property damage NOTICE Notification of installation operation or maintenance information which is important but which is not hazard related WARNING WARNING WARNING WARNING To avoid the release of refrigerant into the atmosphere the refrigerant circuit of this unit must be serviced only by tec...

Page 5: ...tion and Maintenance instructions are provided with each unit Horizontal equipment is designed for installation above false ceiling or in a ceiling plenum Other unit configurations are typically installed in a mechanical room The installation site chosen should include adequate service clearance around the unit Before unit start up read all manuals and become familiar with the unit and its operati...

Page 6: ...ed in the AHRI directory with a specific indoor coil match GeoLogix HTS models are rated with Heat Controller WDG Series air handlers and MWG Series coils as shown in Table 1a Other brands of air handlers may attain the same AHRI ratings providing that the specifications meet or exceed those listed in Table 1a AND Table 1b However for warranty and federal tax credits an AHRI matched system is requ...

Page 7: ...d in the table shows three wet bulb temperatures As recommended in the table notes above select the 67ºF WB column At 1 200 CFM the model 003 capacity is 36 MBtuh which is higher than the minimum capacity required of 35 000 Btuh In this example model 003 would be the appropriate match Figure 1 Selecting Air Handler The Quality Leader in Condition i ng Ai r Residential Split 60Hz R410A R e v 0 3 A ...

Page 8: ...is not designed for outdoor installation Locate the unit in an INDOOR area that allows enough space for service personnel to perform typical maintenance or repairs without removing unit Units are typically installed in a mechanical room or closet Never install units in areas subject to freezing or where humidity levels could cause cabinet condensation such as unconditioned spaces subject to 100 ou...

Page 9: ...when mated to the flush end of most 1 threaded male pipe fittings pro vides a leak free seal without the need for thread sealing tape or joint compound Insure that the rubber seal is in the swivel connector prior to attempting any connection rubber seals are shipped attached to the swivel connec tor DO NOT OVER TIGHTEN or leaks may occur The female locking ring is threaded onto the pipe threads wh...

Page 10: ...a number of times Note This fluid level drop is your only indication of air in the loop Antifreeze may be added before during or after the flushing procedure However depending upon which time is chosen antifreeze could be wasted when emptying the flush cart tank See antifreeze section for more details Loop static pressure will fluctuate with the seasons Pressures will be higher in the winter month...

Page 11: ...id Volume gal liters per 100 30 meters Pipe Pipe Size Volume gal liters Copper 1 4 1 15 3 1 25 6 4 23 8 2 5 9 2 34 3 Rubber Hose 1 3 9 14 6 Polyethylene 3 4 IPS SDR11 2 8 10 4 1 IPS SDR11 4 5 16 7 1 25 IPS SDR11 8 0 29 8 1 5 IPS SDR11 10 9 40 7 2 IPS SDR11 18 0 67 0 1 25 IPS SCH40 8 3 30 9 1 5 IPS SCH40 10 9 40 7 2 IPS SCH40 17 0 63 4 Unit Heat Exchanger Typical 1 0 3 8 Flush Cart Tank 10 Dia x 3f...

Page 12: ...the pH 7 5 and the Calcium hardness is less than 100 ppm scaling potential is low If this method yields numbers out of range of those listed the Ryznar Stability and Langelier Saturation indecies should be calculated Use the appropriate scaling surface temperature for the application 150 F 66 C for direct use well water open loop and DHW desuperheater 90 F 32 F for indirect use A monitoring plan s...

Page 13: ...n HTS024 048 push down on the handle to unlock it Then rotate the handle to the open position as shown in Figure 9a This fully opens the valve for flushing Once flushing is complete return the valve handle to its normally closed position To manually open the internal modulating motorized water valve in HTS060 push down on the lock release button while turning the handle to the open position as sho...

Page 14: ...e chloride nitrate and sulfate compounds All 0 5 ppm Maximum Maximum Allowable at maximum water temperature Chloride Levels 10 C 24 C 38 C Copper Cupronickel 20ppm NR NR 150 ppm NR NR 304 SS 400 ppm 250 ppm 150 ppm 316 SS 1000 ppm 550 ppm 375 ppm Titanium 1000 ppm 550 ppm 375 ppm Erosion and Clogging Particulate Size and Erosion All 10 ppm of particles and a maximum velocity of 1 8 m s Filtered fo...

Page 15: ...ugh a wall seal opening with silicon based caulk Avoid direct contact with water pipes duct work floor joists wall studs floors or other structural components that could transmit compressor vibration Do not suspend refrigerant tubing from joists with rigid straps Do not attach line set to the wall When necessary use hanger straps with isolation sleeves to minimize tranmission of line set vibration...

Page 16: ...g refrigerant pressures during operation The heat pump will trip out on high pressure lockout without some method of disengaging the compressor during furnace operation Alternatively some thermostats with dual fuel mode will automatically de energize the compressor when second stage backup heat is required The TXV should be brazed into place as shown in Figure 11 keeping the IN side toward the com...

Page 17: ...lated Line Sets Power Disconnects Low Voltage TXV IN toward Compressor Section Indoor Compressor Section WDG Series The Quality Leader in Condition i ng Ai r Residential Split 60Hz R410A R e v 0 3 A u g u s t 2 0 1 2 www heatcontroller com 17 Refrigeration Installation Figure 12 Typical Split Air Handler Installation Indoor Compressor Section Figure 13 Typical Split Add on Coil Fossil Fuel Furnace...

Page 18: ...lume of the system is determined and the refrigerant is measured and added into the evacuated system The other method is the partial charge method where a small initial charge is added to an evacuated system and remaining refrigerant added during operation Total Charge Method See Table 4 for the compressor section basic charge For line sets with 3 8 liquid lines add 0 6 ounces of refrigerant to th...

Page 19: ...ger Adding refrigerant will increase sub cooling while superheat should remain fairly constant allowing for a slight amount of hunting in TXV systems This increase in subcooling will require 5 minutes or so of operation before it should be measured After values are measured compare to the chart and go to FINAL EVALUATION FINAL EVALUATION In a split system cooling subcooling values can be misleadin...

Page 20: ...the amount of heat that can be generated by the HWG when using the 125 F set point versus the amount of heat that can be generated by the HWG when using the 150 F set point In a typical 50 gallon two element electric water heater the lower element should be turned down to 100 F or the lowest setting to get the most from the HWG The tank will eventually stratify so that the lower 80 of the tank or ...

Page 21: ...RLY SET TO CONTROL WATER TEMPERATURES DISTRIBUTED TO ALL HOT WATER OUTLETS AT A TEMPERATURE LEVEL THAT PREVENTS SCALDING OR BURNS C H M WATER HEATER CHECK VALVE 8 MAX HOT WATER TO HOUSE ANTI SCALD VALVE ANTI SCALD VALVE PIPING CONNECTIONS COLD WATER SUPPLY Installation The HWG is controlled by two sensors and the DXM2 microprocessor control One sensor is located on the compressor discharge line to...

Page 22: ...ng the upper element should be adjusted to 120 130 F 49 54 C Depending upon the specific needs of the customer you may want to adjust the upper element differently On tanks with a single thermostat a preheat tank should be used Fig 16 6 Replace access cover s and restore power or fuel supply Initial Start Up 1 Make sure all valves in the HWG water circuit are fully open 2 Turn on the heat pump and...

Page 23: ...ltage Wiring Be sure the available power is the same voltage and phase shown on the unit serial plate Line and low voltage wiring must be done in accordance with local codes or the National Electric Code whichever is applicable Power Connection Line voltage connection is made by connecting the incoming line voltage wires to the L side of the contactor as shown in Figures 21 Consult Table 7for corr...

Page 24: ...exchanger and expansion device TXV Therefore LT1 is sensing refrigerant temperature not water temperature which is a better indication of how water flow rate temperature is affecting the refrigeration circuit The factory setting for LT1 is for systems using water 30 F 1 1 C refrigerant temperature In low water temperature extended range applications with antifreeze most ground loops jumper JW3 sho...

Page 25: ...provides outdoor air temperature information for the control system as well as an indication of outdoor temperature on the display screen Thermostat Compressor Compressor Stage 2 Reversing Valve Fan 24Vac Hot 24Vac Common Fault LED DXM2 Board Y1 Y2 W H O G R C AL1 Y1 Y2 W DH O G R C L Dehumidification Notes Auxiliary Heat 1 ECM automatic dehumidification mode operates with dehumidification airflow...

Page 26: ...t A0 2 jumper to IOV if using Modulating Motorized Valve as field installed accessory DIP Switches For residential applications all configuration can be performed in PLAIN ENGLISH on the thermostat No DIP switch changes are required and no LEDs to be observed DXM2 Controls CAUTION CAUTION Do not restart units without inspection and remedy of faulting condition Equipment damage may occur Figure 26 ...

Page 27: ...nd P4 A 24V 240Vac Fan Speed N O N C 12V OUT Gnd P8 IN NC P12 1 2 3 4 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Service tool connection Communicating stat connection Conventional stat connection Cabinet temperature sensor with variable speed pump 24V to compressor second stage solenoid for Y2 full load capacity Use 4 mounting screws 6 sheet metal screw 1 long Configure modulating valve or variable speed pum...

Page 28: ...LLER INC WATER SOURCE HEAT PUMPS Residential Split 60Hz R410A R e v 0 3 A u g u s t 2 0 1 2 Heat Controller Inc Water Source Heating and Cooling Systems 28 Indoor Split HTS024 060 Wiring Diagram 208 230 60 1 DXM2 ...

Page 29: ...l or continuous operating conditions Minimum maximum limits are start up conditions to bring the building space up to occupancy temperatures Units are not designed to operate under these conditions on a regular basis 2 Voltage utilization complies with AHRI Standard 110 Cooling Heating Air Limits Min ambient air DB 45ºF 7ºC 39ºF 4ºC Rated ambient air DB 80 6ºF 27ºC 68ºF 20ºC Max ambient air DB 130...

Page 30: ... must be potable quality initially and clean of dirt piping slag and strong chemical cleaning agents Some antifreeze solutions may require distilled water Internal Flow Controller Verify that it is purged of air and in operating condition System controls Verify that system controls function and operate in the proper sequence Low water temperature cutout Verify that low water temperature cut out co...

Page 31: ...eved For modulating valve adjust valve b Check for warm air delivery at the unit grille within a few minutes after the unit has begun to operate NOTE Units have a five minute time delay in the control circuit that can be bypassed on the DXM2 control board by placing 4 8 10 17 the unit in the Test mode as shown in the unit IOM Check for normal air temperature rise of 20 F to 30 F heating mode c Ver...

Page 32: ...b cooling Water Temp Rise F Air Temp Drop F DB Suction Pressure PSIG Discharge Pressure PSIG Super heat Sub cooling Water Temp Drop F Air Temp Rise F DB 30 1 5 2 25 3 122 132 121 131 121 131 153 173 145 165 135 155 18 23 18 23 18 23 9 14 8 13 8 13 22 1 24 1 16 8 18 8 10 5 12 5 19 25 20 26 20 26 71 81 75 85 78 88 263 283 267 287 270 290 5 10 5 10 5 10 2 5 2 5 2 5 8 1 10 1 5 9 7 9 3 7 5 7 17 23 18 2...

Page 33: ...ion Not Recommended Based on 15 methanol antifreeze solution Entering Water Temp F Water Flow GPM ton Full Load Cooling without HWG active Full Load Heating without HWG active Suction Pressure PSIG Discharge Pressure PSIG Super heat Sub cooling Water Temp Rise F Air Temp Drop F DB Suction Pressure PSIG Discharge Pressure PSIG Super heat Sub cooling Water Temp Drop F Air Temp Rise F DB 30 1 5 2 25 ...

Page 34: ...will tend to scale even quicker than the water coil and may need more frequent inspections In areas with extremely hard water a HWG is not recommended Filters Filters must be clean to obtain maximum performance Filters should be inspected every month under normal operating conditions and be replaced when necessary Units should never be operated without a filter Washable high efficiency electrostat...

Page 35: ...by cycling the G input 3 times within a 60 second time period Sensor Nominal resistance at various temperatures Temp ºC Temp ºF Resistance kOhm Temp ºC Temp ºF Resistance kOhm 17 8 0 0 85 34 55 131 0 2 99 17 5 0 5 84 00 56 132 8 2 88 16 9 1 5 81 38 57 134 6 2 77 12 10 4 61 70 58 136 4 2 67 11 12 2 58 40 59 138 2 2 58 10 14 0 55 30 60 140 0 2 49 9 15 8 52 38 61 141 8 2 40 8 17 6 49 64 62 143 6 2 32...

Page 36: ... Unit Configuration Selections under the Unit Configuration menu are normally set at the factory as a normal part of the manufacturing and test process This menu allows the configuration to be modified for special applications or to configure field replacement controls The Unit Configuration menu provides the ability to select the Heat Pump Family Unit Size Blower Type and Loop Type The Heat Pump ...

Page 37: ...e the current DXM2 control configuration Fault History In addition to the fault code the DXM2 stores the status of all control inputs and outputs when a fault condition is detected The fault history covering the last five lockout conditions is stored and may be retrieved from the DXM2 After a specific fault in the fault history is selected the operating mode and time when the fault occurred are di...

Page 38: ...e in Clg See Only Comp Runs Start Did Unit Attempt to Start Did Unit Lockout at Start up Unit Short Cycles Only Fan Runs Only Compressor Runs Did unit lockout after a period of operation Does unit operate in cooling Unit is OK See Performance Troubleshooting for further help Check Main power see power problems Check fault code on communicating thermostat ATC32 or Configuration and Diagnostics Tool...

Page 39: ...n per chart LT2 Fault Code 5 Low Air Temperature X Reduced or no air flow Check for dirty air filter and clean or replace in cooling Check fan motor operation and airflow restrictions Too high of external static check static vs blower table X Air temperature out of range Too much cold vent air bring entering air temp within design parameters X Improper low temperature setting 30 F vs 10 F Normal a...

Page 40: ...locked out Check for lockout codes reset power X X Compressor overload Check compressor overload replace if necessary X X Thermostat wiring Check thermostat wiring at DXM2 put in Test Mode and ESD ERV Fault DXM Only Green Status LED Code 3 X X ERV unit has fault Rooftop units only Troubleshoot ERV unit fault jumper Y1 and R to give call for compressor IFC Fault Code 13 Internal Flow Controller Fau...

Page 41: ...X Restricted metering device Check superheat and subcooling per chart replace Low Suction Pressure X Reduced water flow Check pump operation or water valve operation setting in heating Plugged strainer or filter clean or replace Check water flow adjust to proper flow rate X Water temperature out of range Bring water temp within design parameters X Reduced air flow Check for dirty air filter and cl...

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Page 43: ...Notes The Quality Leader in Condition i ng Ai r Residential Split 60Hz R410A R e v 0 3 A u g u s t 2 0 1 2 www heatcontroller com 43 ...

Page 44: ...heatcontroller com The Quality Leader in Conditioning Air R M A N U F A C T U R E R CERTIFIED TO ARI AS C O M P L Y I N G W I T H I S O STANDARD 13256 1 HEAT PUMPS W A T E R T O AIR BRI N E T O A I R 08 12 Part 97B0016N18 97B0016N18 Design specifications and materials subject to change without notice ...

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