441 01 2314 06
Specifications are subject to change without notice.
18
Figure 11
Electrical Connections
NOTE: 115 VAC/60Hz/single
−
phase
Operating voltage range*: 127 VAC max, 104 VAC min.
* Permissible limits of voltage at which unit will operate satisfactorily
115V. 60Hz.
HOT
NEUT
.
W
BK
G
Connection
BOX
Ground
Thermostat
Y
G
W
R
25-25-13
Low Voltage
Terminal Board
W R
G
Y
C
Furnace Control
The furnace control is preset at the factory with ON delay of 30 sec-
onds in the heating mode. The blower
OFF
timing is preset at 140
seconds. If desired, the fan
OFF
delay can be reset to obtain the
longest delay times while still maintaining comfort levels. See
“Furnace Wiring Diagram”.
Furnace Control Fuse
The 24V circuit contains a 5
−
amp, automotive
−
type fuse located
on furnace control. (See
Figure 12
) Any electrical shorts of 24V
wiring during installation, service, or maintenance may cause fuse
to blow. If fuse replacement is required, use only a fuse of identical
size (5 amp.).
FUSE
25-24-98
Diagnostic Light
Jumper
24 VAC
HUM
115 VAC
HUM
Control Connections
Figure 12
9. Ductwork and Filter
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in
personal injury or death.
Do NOT draw return air from inside a closet or
utility room where furnace is located. Return air duct
MUST be sealed to furnace casing.
!
WARNING
FIRE HAZARD
Failure to follow this warning could result in
personal injury, death and/or property damage.
Place furnace on noncombustible subbase on
downflow applications, unless installing on
non
−
combustible flooring.
!
WARNING
Duct Connections
This furnace may be installed in only a top return
−
air application.
Return air duct connection through the side(s) or back of the fur-
nace is
NOT
permitted. Supply duct connection is permitted to
ONLY
the bottom of the furnace.
