SECTION 10: W
IRING
21 of 51
SECTION 10: WIRING
All heater models req
u
ire constant 120 V / 1Ø / 60
Hz po
w
er s
u
pply. Check heater rating 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.
10.1.1 Fan Control
The heater’s axial fan can be
u
sed d
u
ring the off-
season for air circ
u
lation. A lo
w
voltage
programmable thermostat
w
ith fan s
w
itch (P/N
90425400) m
u
st be
u
sed.
See Page 21, Section
10.2
for thermostat connection details. For the
u
se
of m
u
ltiple heaters on one thermostat,
See Page 22,
Section 10.3
through Page 23, Section 10.4
.
10.2 Low Volta
g
e Thermostat with One Heater
DANGER
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may be
required to disconnect electric from
equipment.
Equipment must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
R
G
W
C
Electrical
Supply
Terminal
Strip
R
W
R
G
24 Volt
Thermostat
Heating Only
24 Volt
Thermostat
with Fan Control
W
C
Terminal
Strip
Electrical
Supply
R
G
W
C
Gas Supply
Gas Supply
