Detroit Radiant Products Company UH Series - Manual (Page 24)

24
UH Series
Thermostat Connection
NOTE: Different thermostats operate according to their particular features. Refer to the thermostat’s
specifications for details.
Each UH Series heater requires a single stage thermostat rated for 24VAC to operate. The heater
comes standard with a terminal strip for making the thermostatic connections, located on the back
panel. The thermostat terminal designations are as follows:
R: 24VAC Power
W: Call for Heat
G: Continuous Fan
C: Common for 24VAC Power
24VAC is supplied from an internal 40VA transformer. Do not supply 24 Volts to the terminal strip. A
minimum of 18 AWG low voltage thermostat wire must be used for connecting the thermostat to the
heater. Follow the field wiring diagram in Figure 3.7 for wiring to a typical single-stage thermostat.
Figure 3.7 • Field Wiring Diagram
Rh Rc W Y G C
R
W
G
Y
Thermostat
Detail A
See Detail A
Heater Back Panel
3.0 Installation • Thermostat Connection