1017480-A
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CAUTION:
Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.
CHB-3 BLOWER INSTALLATION - ( OPTIONAL )
This kit must be installed by a qualified installer or service technician.
STEP 1.
Run black wire & white wire that comes from bottom of
junction box down through the heat shield.
See Figure K-1.
STEP 2.
Insert junction box into opening in back of heater. Attach
using four #8x1/2” black screws provided.
See Figure K-1.
STEP 3.
Attach fan switch to fan switch bracket using two #8x1/2”
plated, Phillip head screws provided. The 2” flange on the
bottom of bracket and terminals on the fan switch should be
toward the back of the heater when properly installed.
STEP 4.
Locate the two engagement holes in base of heater. On
a 35,000 Btu heater these holes are approximately 6-1/2”
from the back edge and right and left holes are 5-1/4” and
7-1/4” respectfully from the right side (as viewed from
back of heater). On a 50,000 Btu heater the holes are
approximately 10-3/4” from the back edge and right and
left holes are 5-3/8” and 7-3/8” respectfully from the right
side. Attach fan switch bracket to base using two #8x1/2”
hex head screws provided. This will require a ¼” socket and
ratchet.
See Figure K-1.
STEP 5.
Locate the blower opening and mounting tab on the base
of the heater. Insert the front flange of the blower housing
under the mounting tab, lower the back of the blower down
onto the base aligning the clearance holes in the blower
base with the engagement holes in the heater base. Secure
the blower to the base with two #8 screws provided.
See
figure K-1.
STEP 6.
Connect black wire from junction box to right fan switch
terminal.
See Figure K-2.
STEP 7.
Connect white wire from junction box to white fan motor
wire.
See Figure K-2.
STEP 8.
Connect black wire from fan motor to left fan switch terminal.
See Figure K-2.
STEP 9.
Turn variable speed control switch clockwise
(as viewed from front of unit) to
“OFF”.
STEP 10.
Plug power cord into 115 V. grounded receptacle.
STEP 11.
Turn variable speed control switch counterclockwise
(as viewed from front of unit) from
“OFF”
to
“HIGH”
.
Blower will now cycle on automatically when the switch
temperature is met after the main burner comes on. The
blower will continue to run for a short period after the main
burner goes off. Blower speed can be adjusted by setting
the variable speed control switch between high and low.
WARNING:
This appliance is
equipped with a three-prong (grounding)
plug for your protection against shock
hazard and must be plugged directly
into a properly grounded three-prong
receptacle. Do not cut or remove the
grounding prong from this plug.
Fig. K-1
Fig. K-2
If any part of the original wire as suppied with the
appliance must be replaced, it must be replaced with a
wire of at least a 105 degree C temperature rating.
POWER
CORD
JUNCTION
BOX
HEAT SHIELD
FAN SWITCH
BRACKET
BLOWER
HOUSING
MOUNTING TAB
SPEED
CONTROL
MOTOR
SPEED
CONTROL
BLACK
BLACK
WHITE
WHITE
GREEN
BLACK
FAN
SWITCH
MOTOR
