Remote Thermostat

920-087-04

Remote Thermostat and Low Voltage Control Connections

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 the steps below:

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.

Thermostat Connections

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.

Figure 13

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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