Heat Controller DXM2 - Manuals

Heat Controller DXM2 – Manual in PDF format online.

Manuals:

Manual

Manual Heat Controller DXM2

Summary

Page 2 - DXM2 UNIT CONTROLS; Table of Contents

2 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. Table of Contents DXM2 Electronic Heat Pump Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 D...

Page 3 - DXM2 Electronic Heat Pump Controls

3 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual DXM2 OVERVIEWThe manufacturer’s next generation control board, DXM2, is the geothermal industry’s fi rst two-way communication. The DXM2 electronic control is a robust, microprocessor based heat pump controll...

Page 4 - DXM2 Physical Dimensions & Layout

4 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. P1 AlarmRelay Comp Relay O Y1 Y2 W G C R AL1 24Vdc EH1EH2 P6 R C Off On JW3 A OVR ESD C R NSB AL2 JW1 Acc1 Relay Acc2 Relay H COM NC1 NO1 COM NC2 NO2 P3 CO RV RV LT1LT1LT2LT2 LPLP HP HP P7 Status Fault R R CC...

Page 5 - DXM2 Layout and Connections

5 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual DXM2 Layout and Connections P1 AlarmRelay Comp Relay O Y1 Y2 W G C R AL1 24Vdc EH1EH2 P6 R C Off On JW3 A OVR ESD C R NSB AL2 JW1 Acc1 Relay Acc2 Relay H COM1 NC1 NO1 COM2 NC2 NO2 P3 CO RV RV LT1LT1LT2LT2 LPL...

Page 6 - a) the compressor is On in Cooling Mode and the LT1; DXM2 Controls

6 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. FIELD SELECTABLE INPUTSTest mode: Test mode allows the service technician to check the operation of the control in a timely manner. By momentarily pressing the TEST pushbutton, the DXM2 control enters a 20 mi...

Page 7 - Table 2: Accessory Relay 2 Confi guration

7 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual On = Heat Pump. Off = Heat/Cool. DIP 1.4: Thermostat Type (O/B) - Provides selection of thermostat type. Heat pump thermostats with “O” output on with Cooling or “B” output on with Heating can be selected. On...

Page 8 - FAULT CODES; a) the LT1 thermistor temperature is below the selected

8 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. SAFETY FEATURESThe following safety features are provided to protect the compressor, heat exchangers, wiring and other components from damage caused by operation outside of design conditions. Anti-Short Cycle...

Page 10 - Table 3: LED and Alarm Relay Output Table

10 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. Note: The compressor will have a 5-minute anti-short cycle delay at power-up. Standby/Fan Only - In Standby Mode, the compressor will be off. The selected fan output(s) and RV relay may be on if appropriate ...

Page 13 - Table 4: Thermostat Inputs With Resulting Demands

13 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual to the compressor output. All other heat pump operating modes will operate normally, and the accessory relay will be off in all other operating modes. Thermostat Inputs – Table 5 shows the resulting demand f...

Page 15 - LT2 Part Numbers; DXM2 SENSORS

15 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual DXM2 Controls Table 7: Replacement Thermistor LT1, LT2 Part Numbers Thermistor Type Tube OD Lead Length (in.) 36 48 96 192 LT1 (Gray) 3/8, 1/2 17B0005N06 N/A 17B0005N04 N/A 5/8, 7/8 N/A N/A 17B0004N01 N/A LT...

Page 16 - DXM2 Service & Application Notes; Pressure Switches

16 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. Table 9: Nominal resistance at various temperatures DXM2 Service & Application Notes Table 8: 1% Sensor Calibration Points Temp (°F) Minimum Resistance (Ohm) Maximum Resistance (Ohm) Nominal Resistance (...

Page 17 - Thermostat Compatibility; with well water solenoid valves.; DXM2 Thermostat Details

17 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual Thermostat Compatibility Most all heat pump and heat/cool thermostats can be used with the DXM2 Control. For additional diagnostic capabilities, the communicating thermostat is recommended. Anticipation Leak...

Page 18 - Basic Troubleshooting Information

18 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. General TroubleshootingBasic DXM2 board troubleshooting in general is best summarized as simply verifying inputs and outputs. After this process has been verifi ed, confi dence in board operation is confi rm...

Page 19 - Advanced Troubleshooting and Confi guration Information

19 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual GeneralTo properly confi gure and troubleshoot advanced control features, and to aid in troubleshooting basic control features, a communicating thermostat or diagnostic tool with similar capabilities should ...

Page 21 - Troubleshooting Chart; Start; DXM2 Functional

21 Heat Controller, Inc. DXM2 UNIT CONTROLS Application, Operation, & Maintenance Manual Use the following troubleshooting fl ow chart to fi nd appropriate troubleshooting strategies on the following pages for the DXM2 control and most water source heat pump applications. Troubleshooting Chart S...

Page 24 - Functional Troubleshooting

24 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. Functional Troubleshooting CAUTION! CAUTION! Do not restart units without inspection and remedy of faulting condition. Equipment damage may occur. Fault Htg Clg Possible Cause Solution Main Power Problems X ...

Page 26 - Performance Troubleshooting

26 Application, Operation, & Maintenance Manual DXM2 UNIT CONTROLS Heat Controller, Inc. Symptom Htg Clg Possible Cause Solution Insufficient Capacity/ X X Dirty filter Replace or clean Not Cooling or Heating Rduced or no air flow Check for dirty air filter and clean or replace Properly in heati...