Heat Controller HTH, HTV, HTD Field Conversion of Air Discharge, Side to Back Discharge Conversion

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Installation, Operation & Maintenance

HTV/HTD/HTH SERIES

Heat Controller, Inc.

Field Conversion of Air Discharge

Overview - Horizontal units can be field converted between side (straight) and back (end) discharge using the instructions below.

Note: It is not possible to field convert return air between left or right return models due to the necessity of refrigeration copper piping changes.

Preparation - It is best to field convert the unit on the ground before hanging. If the unit is already hung it should be taken down for the field conversion.

Side to Back Discharge Conversion

1. Place unit in well lit area. Remove the screws as shown in

Figure 4 to free top panel and discharge panel.

Figure 4: Left Return Side to Back

Water

Remove Screws

Connection End

 

Return Air

Side Discharge

Water

Connection End

2.

Lift out the access panel and set aside. Lift and rotate the

 

discharge panel to the other position as shown, being careful

 

with the blower wiring.

3.

Check blower wire routing and connections for tension or

 

contact with sheet metal edges. Reroute if necessary.

4.

Check refrigerant tubing for contact with

 

other components.

5.

Reinstall top panel and screws noting that the location for

 

some screws will have changed.

6.

Manually spin the fan wheel to ensure that the wheel is not

 

rubbing or obstructed.

Water

Rotate

Return Air

Move to Side

Replace Screws

7.

Replace access panels.

Back to Side Discharge Conversion - If the discharge is changed from back to side, use above instruction noting that illustrations will be reversed.

Left vs. Right Return - It is not possible to field convert return air between left or right return models due to the necessity of refrigera- tion copper piping changes. However, the conversion process of side to back or back to side discharge for either right or left return configuration is the same. In some cases, it may be possible to rotate the entire unit 180 degrees if the return air connection needs

Connection End

Back Discharge

Return Air

Drain

Discharge Air

to be on the opposite side. Note that rotating the unit will move the piping to the other end of the unit.

Figure 5: Right Return Side to Back

Return Air

Supply Duct

Side Discharge

Water

Connection End

Water

Return Air

Drain

Discharge Air

Connection End

Back Discharge

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Contents HTV/HTD/HTH Series Two-Stage Geothermal Heat Pumps To 6 Tons Table of Contents Safety General Information Hanger Bracket Horizontal Unit LocationTypical Horizontal Unit Installation Horizontal InstallationSide to Back Discharge Conversion Field Conversion of Air DischargeCondensate Piping Horizontal Units Duct System Installationರ3HU RRW Vertical Unit Location Vertical InstallationAir Inlet Using a threaded pipe or similar device to clearMay ease final drain line installation ReturnFlushing the Earth Loop Water Connection InstallationPiping Installation External Flow Controller MountingGround-Loop Heat Pump Applications Fluid Volume gal liters per 100’ 30 meters PipeAntifreeze Pressure Tank and Pump Antifreeze Percentages by VolumeOpen Loop Ground Water Systems Water Quality StandardsTypical Open Loop/Well Application Ground-Water Heat Pump ApplicationsWater Quality Standards Hot Water Generator Typical HWG InstallationÅashes InstallationHigh Water Temperature 160ºF Control Logic ErrorWater Tank Refill Water Tank PreparationInitial Start-Up HWG Water PipingHT Series Electrical Data Electrical Line VoltageElectrical Line Voltage General Line Voltage WiringPower Connection HWG Wiring Split Units OnlyThermostat Connections Electrical Low Voltage WiringLow voltage Äeld wiring for units with ECM fan Low Water Temperature Cutout SelectionTwo-stage Units Accessory ConnectionsATM21U01 Electrical Thermostat WiringThermostat Installation Fault LEDECM Blower Control HT Units ECM Board Tap SettingsHT Series ECM Blower Performance Data CXM Controls Diagnostic Features Safety Features CXM ControlCXM Control Start-up Operation Unit Operation Stat signalECM fan PSC fan Not compatible with the CXM Nominal resistance at various temperaturesThermostat Signals CXM Thermostat DetailsVoltage utilization range complies with Ahri Standard Unit Commissioning And Operating ConditionsOperating Limits Commissioning ConditionsUnit and System Checkout Before Powering SYSTEM, please check the followingUnit Start-up Procedure Unit Start-Up and Operating ConditionsUnit Start-Up Procedure Antifreeze Correction Table Water Temperature Change Through Heat ExchangerUnit Operating Conditions HT Coax Water Pressure DropPsig HT Series Typical Unit Operating Pressures and TemperaturesGPM Cooling EAT 80/67F Performance Data HT 024 Full LoadPerformance Data HT 036 Full Load Performance Data HT 048 Full Load Performance Data HT 060 Full Load Performance Data HT 070 Full Load Preventive Maintenance Troubleshooting CXM Process Flow Chart CXM Functional Troubleshooting Flow ChartMain power problems Functional TroubleshootingPerformance Troubleshooting Htg Clg Possible Cause Solution Performance Troubleshooting+&$ Troubleshooting Form97B00