Roberts Gorden Combat UHD-Series, Installation, Operation & Service Manual

Page: 29 / 70

SECTION 10: W
IRING
21 of 57
SECTION 10: WIRING
All heater models req u ire constant 120 V /1Ø/60 Hz
po w er s u pply. Check heater serial plate for electrical
rating for proper circ u it sizing. For servicing, a
disconnect s w itch of proper electrical rating sho u ld
be installed in the vicinity of the heater.
All heaters are eq u ipped w ith thermostat
connections s u itable to po w er a 24 V thermostat.
Heater m u st be w ired and electrically gro u nded in
accordance w ith local codes. In the absence of local
codes in accordance w ith: United States: refer to
National Electrical Code
®
NFPA 70 - latest revision
Canada: refer to Canadian Electrical Code CSA
C22.1 Part I - latest revision.
10.1 Positionin g Thermostats
A room thermostat sho u ld be mo u nted on a
vibration-free w all or col u mn at a height of
approximately 5' (1.5 m) from the floor to meas u re
the ambient temperat u re. It sho u ld be clear of both
cold drafts and the direct path of w arm air from the
heater.
Avoid mo
u nting thermostat on o u tside w alls or in
areas directly exposed to radiant heat or s u nlight.
Install w all tag in a visible location near thermostat.
See Page 5, Section 2.1 for w all tag details.
10.2 Low Volta g e Thermostat with One Heater for Models UHD[T][X][S][R] 150-250
DANGER
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may be
required to disconnect electric from heater.
Heater must be properly grounded.
Failure to follow these instructions can
result in death or electrical shock.
Terminal
Strip
Gas Supply
C W G R
R
W
C
W
24 Volt
Thermostat
Heating Only
24 Volt
Thermostat
with Fan Control
G
R
Gas Supply
C W G R
Terminal
Strip
NOTE:
Electrical
supply is located
below terminal strip.