Installation Manual
26
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
HOLE
PLUGS
.
WARNING
T
O
PREVENT
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRIC
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
INSTALLING
OR
SERVICING
THIS
UNIT
.
WARNING
HIGH VOLTAGE !
T
O
AVOID
THE
RISK
OF
INJURY
,
ELECTRICAL
SHOCK
OR
DEATH
,
THE
FURNACE
MUST
BE
ELECTRICALLY
GROUNDED
IN
ACCORDANCE
WITH
LOCAL
CODES
OR
IN
THEIR
ABSENCE
,
WITH
THE
LATEST
EDITION
OF
THE
N
ATIONAL
E
LECTRIC
C
ODE
.
WARNING
WARNING
TO AVOID THE RISK OF INJURY, ELECTRICAL SHOCK OR DEATH, THE
FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH
LOCAL CODES OR, IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
N
ATIONAL ELECTRICAL CODE.
The furnace integrated control module is equipped with line
voltage accessory terminals for controlling power to an optional
for locating, mounting, grounding, and controlling these acces-
sories. Accessory wiring connections are to be made through the
1/4” quick connect terminals provided on the furnace integrated
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum tempera-
ture rating of 105°C. All line voltage wire splices must be
made inside the furnace junction box.
HUM-H is energized with 115 volts whenever the induced
draft blower is energized. This terminal can also be used
remaining primary transformer wire would be connected
to the Line N on the control board. The integrated control
module electronic air cleaner terminals EAC-H is energized
with 115 volts whenever the circulator blower is energized.
PCBBF145
CONTROL BOARD
EAC-H120 HUM-H
EAC-N
120V HUM-N
115 VAC EAC
115 VAC HUM
FIG 30
draft blower is energized. Connect the common side of the
terminal strip on the control board.
PCBBF145
Y/Y2 W R G C
24VHUM
24 VOLT HUM. &
HUMIDISTAT
FIG 30A
1. Remove the burner compartment door.
2. Remove and save the two screws securing the junction
box to the side panel.