:>0.65-N2
.LECTRICAL DATA
lse
copper conductors only!
-eld wiring to the unit must conform to and
be
grounded in
:::cordance with the provisions of the National Electrical Code
,NSI/NFPA No.
70-1987,
Canadian Electrical Code CSA
;22.1 and/or local codes. Electric wires which are field installed
hall conform with the temperature limitation for 63°F/35°C rise
-'ire when installed in accordance with instructions. Specific
-lectrical data is given for the furnace on its rating plate and in
·:Jble 1 of this instruction.
::LECTRICAL CONNECTIONS
VOTE:
The furnace's control system depends on�
�of the power supply.
Connect the power supply as shown on the unit wiring label
Jn the i
ry:;
ide of the blower compartment door.
::>rovide a power supply separate from all other circuits. Install
wercurrent protection and disconnect switch per localfnational
�lectrical codes. The switch should be reasonably close to the
Jnit for convenience in servicing. With the disconnect switch in
the OFF position, check all wiring against the unit wiring label.
Also, see the wiring diagram in this instruction.
Install the field-supplied thermostat. The thermostat instruc
tions for wiring are packed with the thermostat. With the
thermo:.=;tat in the OFF position and the main electrical source
disconnected, complete the low voltage wiring from the thermo
stat to the terminal board on the low voltage transformer.
Typical control wiring is shown in Figure 1 OA.
Set the
heat anticipator in t he room thermostat to
1.16
amps. Setting
i t lower will
cause
short cycles. Setting i t
higher will c
a
u
s
e
t h e room temperature to exceed th
e
s
e
t
p
oint
.
NOTE:
Some thermostats do not have adjustable anticipators.
On such thermostats, adjust cycle rate to prevent possible
short on/off cycles.
The 24-volt transformer is sized for the furnace components
only, and should not be connected to auxiliary devices such as
humidifiers, air cleaners, etc.
RGURE 10A-
TYP ICAL CONTROL WIRING
SAFETY CONTROLS
Interlock
Switch
This unit .i? equipped with an Electrical Interlock Switch
mounted in the blower compartment. This switch interrupts
power at the unlt when the panel covering the blower compart
ment is removed. This prevents operation of the automatic gas
control valve and the blower.
WARNING:
Blower and burner must never be operattkf without
the blower panel in place.
Electrical supply to this unit is dependent upon the panel that
covers the blower compartment being in pface and propedy
positioned.
INOVCER
CONNECTION
ll
CONDENSATE
ORAINPAN
I><OUCER
CONNECTI().( I 2
tNOVCER
CONNECT10N
I I
INDUCER
C<X-lNECllON
•2
INOVCER
CONNECTION
II
F!GUR
(
11 .�PRESSURE SW
�
CH TUBING ROUTING
·:·;·:
CAUTION:
Main power to the unit must still be interrupted at
the main power disconnect switch before·any service or
repair work is to be done to the unit. Do not rely upon the
interlock switch as a main power disconnect.
Unitary Products Group
