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24
Remote Control Thermostat
Installation
Install Thermostat
1. Approximately 5 ft from the floor.
2. Close to or in a frequently used room,preferably on an inside wall.
3. On a section of wall without pipes or ductwork.
The Thermostat should NOT be mounted:
1. Close to a window,on an outside wall,or next to a door leading
outside.
2. Where it can be exposed to direct sunlight or heat,such as the sun,
a lamp,fireplace or any other temperature radiating object which
may cause a false reading.
3. Close to or in the direct airflow of supply registers and/or return
air grilles.
4. Any areas with poor air circulation,such as a corner,behind a
door,or an alcove.
Remote Thermostat and Low
Voltage Control Connections
RemoteThermostat
All Friedrich PZ model PTAC units are factory configured to be controlled
by either the chassis mounted Smart Center or a 24V remote wall
mounted thermostat.The thermostat may be auto or manual changeover
as long as the control configuration matches that of the PTAC unit.
NOTE: All PZE models require a single stage cool,single stage heat
thermostat.All PZH models require a single stage cool,dual
stage heat thermostat with an B reversing valve control.The
Friedrich RT6 thermostat can be configured for either model.
To control the unit with a wall mounted thermostat
follow the steps below:
1. Unplug the unit before doing any work
2. Remove the low voltage terminal block from the unit.
3. Connect the corresponding terminals from the wall thermostat to
the terminal block
4. Plug the terminal block on the unitk.
5. Restore power to the unit.
6. Under stand-by mode, press the “Cool” and “UP” buttons
simultaneously for three seconds, the digital displays character
“r”, and the beeper chime twice.
7. The unit is now controlled by the wall thermostat only.
8.
If the accessory escutcheon kit (PDXRTB) is to be used, install
it over the existing control panel.
NOTE: The unit control panel no longer controls the unit. To restore the
control panel, press the “Cool” and “UP” buttons simultaneously
for three seconds, the digital displays character “P”, and the
beeper chime once.
ThermostatConnections
R = 24V Power from Unit
Y = Call for Cooling
W = Call for Heating
B = Reversing Valve Energized in Heating.Mode
GL = Call for Low Fan
GH = Call for High Fan
C = Common Ground
*If only one G terminal is present on thermostat connect to GL for low
speed fan or to GH for high speed fan operation.
Figure 30
Control board with optional
PDXRTB
escutcheon kit
installed
FRP030
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