Remote Thermostat Primary/Secondary Unit Wiring Connections; Remote Thermostat Control - McQuay PDAC Installation & Maintenance Data

Remote Thermostat Control

The Remote Thermostat can be any thermostat that can
interface with an electronic thermostat via RCBWYG
terminals. The Control Selection jumper must be in
T'STAT position. During a call the remote thermostat
will pass R back to the controller on a respective
terminal. The push buttons on the touchpad become
inactive in the remote thermostat mode. However, the
control pad LED display will indicate the mode of
operation, and the room temperature.
Installation of Remote Mounted Thermostat
Units that are furnished with remote mounted
thermostats should be wired as shown in Figure 30.
Other considerations for this arrangement are as
follows:
Figure 30. Remote Thermostat With Primary/Secondary Unit Wiring Connections
IM 882 / Page 28 of 36
1. When wiring the low voltage plug and receptacle
disconnect, provide enough wire to move harness
out of the way for chassis removal.
2. If subbase is used, a small hole must be drilled and
grommeted in the subbase front to allow passage
of the low voltage wires.
3. If secondary units are to be employed, see
connections in Figure 30. The number of secondary
units that can be connected is limited to 32 units.
4. When using a programmable wall thermostat,
connect it to the terminal board remote thermostat
plug. Refer to the instructions furnished with the
chosen thermostat.