Appendix - Friedrich TEC12K34 Installation & Operation Manual

Appendix A: Selection, Wiring &
Installation of Remote Thermostat
1. Remote Thermostat Selection & Wiring Guidelines for Packaged Terminal Air
Conditioners
Follow the instructions and recommendations of the thermostat manufacturer for installation and wiring. We do not
recommend a conventional heat pump thermostat with emergency electric heat selection for our heat pump units.
Our units make an automatic decision about turning on emergency heat if the heating demand cannot be met by
the heat pump.
A. Manual Changeover Thermostat
A single stage heat/cool thermostat with a terminal for heat damper operation is required. The recommended
thermostat/subbase is the Honeywell T-87F/Q539J. You can also substitute a thermostat with single stage cooling
and dual stages of heating.
Hone_
TERMINAL LETTER
Y
W
G
R
B
W2
n_ell Thermostat Terminal Designation:
OPERATION
Cooling
Heating
Fan
24V common
to the thermostat
Heat Damper
Stage 2 Heating
CONTACT MADE
Durin9 call for cooling.
During call for heating.
Continuous if the slider is in the "Fan"
)osition, otherwise, intermittent.
Makes contact thru the thermostat
when a call for heating, cooling or fan is
made.
Made continuously during call for
heating.
Made if stage 1 (W) cannot handle the
heating load by itself.
Wiring:
Wire as follows:
THERMOSTAT TERMINAL
W&Y
Y
B
R
G
JUMPER
Yes
N/A
N/A
N/A
N/A
WIRE TO PTAC TERMINAL
N/A
Y
W
R
G
Manual Changeover Thermostat
Single Stage Cooling/Heating with Heat Damper Terminal
If using a thermostat with single cooling and dual heating
stages, install a jumper between the stage 2 heating terminal
(W2 on Honeywell) & the cooling terminal (Y on the
Honeywell), and wire to terminal "Y" on the UnitTerminal
Board.
Wire stage 1 heating (Wl on Honeywell) to terminal "W" on
the Unit Terminal Board. The remainder of the wiring is as
shown.
UnitTerminal Board
UnitTerminal Board
OR C y ,,m ,30 0 _ 0
" ,JUh PER
ThermostatTerminals ThermostatTerminals