Specifications

Contents
Getting Other Informations and Publications .... 1
General Information
Water Source Nomenclature .................................. 2
Heater Package Nomenclature .............................. 5
Application and Location
General ................................................................ 6
Shipping Damage .................................................... 6
Application .............................................................. 6
Location ................................................................ 6
Ductwork ................................................................ 6
Filters ................................................................ 8
Condensate Drain ................................................... 8
Piping Access to Unit ............................................. 8
Wiring Instructions
General ................................................................ 9
Control Circuit Wiring .............................................. 9
Wall Thermostats .................................................... 9
Thermostat Indicator Lamps ................................. 10
Emergency Heat Position..................................... 10
Blower Control Setup ............................................ 10
Humidity Control ................................................... 10
CFM Light.............................................................. 10
Wiring Diagrams .............................................. 12-16
Closed Loop (Earth Coupled Groung Loop
Applications)
Note .............................................................. 17
Circulation System Design ................................... 17
Start Up Procedure for Closed Loop System....... 18
Open Loop (Well System Applications)
Note .............................................................. 20
Water Connection ................................................. 20
Well Pump Sizing ................................................. 20
Start Up Prodecure for Open Loop System ......... 22
Water Corrosion .................................................... 22
Remedies of Water Problems .............................. 23
Lake and/or Pond Installations ............................. 24
Sequence of Operation
Cooling .............................................................. 25
Heating Without Electric Heat .............................. 25
Heating With Electric Heat ................................... 25
Emergency Heat ................................................... 25
Lockout Circuits .................................................... 25
Pressure Service Ports ......................................... 25
System Start Up ................................................... 25
Pressure Tables .................................................... 28
Quick Reference Troubleshooting Chart............... 29
Service
Service Hints ......................................................... 30
Unbrazing System Components .......................... 30
Troubleshooting ECM Blower Motors .............. 31-32
Accessories
Add-On DPM26A Pump Module Kit ..................... 33
General .............................................................. 33
Installation ............................................................. 33
Ground Source Heat Pump
Performance Report ........................................ 34-35
Wiring Diagram ..................................................... 36
Figures
Figure 1 Unit Dimensions ..................................... 4
Figure 2 Field-Conversion to Left Hand Return .... 7
Figure 3 Filter Components .................................. 8
Figure 4 Piping Access ........................................ 8
Figure 5 Blower Control Board ............................11
Figure 6 Circulation System Design .................. 17
Figure 7 .............................................................. 18
Figure 8 Performance Model GPM-1 Loop
Pump Module ....................................... 19
Figure 9 Performance Model GPM-2 Loop
Pump Module ....................................... 19
Figure 10 Water Connection Components ........... 21
Figure 11 Cleaning Water Coil ............................. 22
Figure 12 Lake or Pond Installation ..................... 24
Figure 13 .............................................................. 26
Figure 14 Control Board........................................ 26
Figure 15 .............................................................. 27
Figure 16 Pressure Tables.................................... 28
Figure 17 DPM26A Pump and GSVS Unit .......... 33
Tables
Table 1 Specifications ......................................... 2
Table 2 Indoor Blower Performance .................... 3
Table 2A Flow Rates for Various Fluids ................ 3
Table 3 Water Coil Pressure Drop ...................... 3
Table 4 Electrical Specifications Optional Field
Installed Heater Package ........................ 5
Table 5 Control Circuit Wiring .............................. 9
Table 6 Wall Thermostat and Subbase
Combinations .......................................... 9
Table 7 Proper Location of Taps ........................ 10
Table 8 Constant Flow Valves ........................... 20