Friedrich 920-087-04 (3-05) manual Remote Thermostat and Low Voltage Control Connections

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920-087-04 (3-05)

Remote Thermostat and Low Voltage Control Connections

Remote Thermostat

All Friedrich PD model PTAC units are factory configured to be controlled by either the chassis mounted Smart Center or a 24V single stage remote wall mounted thermostat. The thermostat may be auto or manual changeover as long as the control configuration matches that of the PTAC unit.

To control the unit with a wall mounted thermostat follow thestepsbelow:

1)With the front cover removed locate the low voltage terminal strip at the lower portion of the Smart Center.

2)Remove the jumper between the ‘GL’ and GH’ terminals.

3)The control is now configured for control by a wall thermo- stat. The Smart Center will no longer control the unit.

4)If desired the accessory escutcheon kit (PDXRT) is to be used, install it over the existing control panel.

Note: To revert back to the Smart Center control of the unit replace the jumper wire between the ‘GL’ and ‘GH’ terminals that was removed in step 1.

ThermostatConnections

C= Common Ground

W= Call for Heating

Y= Call for Cooling

R= 24V Power from Unit GL = Call for Low Fan GH = Call for High Fan

B= Reversing Valve Energized in heating mode (PDH Models Only)

*If only one G terminal is present on thermostat connect to GL for low fan or to GH for high fan operation.

Figure13

Control board with optional PDXRT escutcheon kit installed

ONDIP

1 2 3 4 5 6 7 8

JP1

R Y W

B GL GH C D1 D2 F1 F2

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Contents Ptac Standard Control Remote Thermostat Seacoast ProtectedTable of Contents Model Number Code Ptac Installation Recommendations Building ElevationFriedrich Digital Control Features DigitalTemperatureHeatPumpMode Installation Instructions PXDR10 Drain Kit Drain Kit Location and InstallationInternal Drain optional for new construction Cover Plate Installation ExternalDrainfor new construction or unit replacementDrain Tube Installation Drain Kit InstallationWall Sleeve Installation Instructions Pdxws TypicalWallSleeveInstallationDimensions LintelInstallationSection II Deep Wall Installation Pxwe Extension InstallationWall Sleeve Extension Sealant Locations Installation Instructions Model Pxga Standard Grille Standard Grille15/20A Lcdi Device Power Cord Information 230/208V models onlyElectrical Rating Tables 30A Lcdi DeviceInstallation Checklist Section III Chassis InstallationWall sleeve Wall sleeve flange Chassis flange and gasket Dip Switch Setting Factory Dip Switch ConfigurationDigital Control User Input Configuration Digital Control Operation Control board with optional Pdxrt escutcheon kit installed Remote Thermostat and Low Voltage Control ConnectionsDesk Control Terminals Fresh Air Vent ControlAir Discharge Grille Auxiliary Fan ControlStart-up Checklist Appendix a Electrical Wiring for 265 Volt Models Line Voltage ConnectionsRoutine Maintenance ComponentsEnvironmental Effects Heating Mode Basic Troubleshooting TechniquesEnvironmental Effects Cooling Mode Insufficient Maintenance and InspectionDigital Control Diagnostics and Test Mode DiagnosticsTest Mode Friedrich Ptac Accessories Pxdl Friedrich Air Conditioning Company 920-087-04