Owner`s manual

29898-8-1114Page 30
FBB4BlowerInstallation
Attention: Install blower assembly before connecting gas inlet
supply line.
Note: Junction box on right side of replace must be pre-
wired at time of replace installation for use with blower
assembly. It is recommended that an ON/OFF wall switch
be installed that will activate the power supply to the
furnace by a qualied electrician. See page 32 for junction
box wiring instructions
1. If installed, turn OFF gas supply to replace.
2. If applicable, turn OFF electric supply to replace.
3. Lower bottom louver on replace.
Attention: If installed, do not damage gas inlet supply line when
blower assembly is inserted into replace. If necessary, removal
of the gas inlet supply line may be necessary.
4. Insert blower assembly into interior, bottom of replace. Position
blower assembly behind gas valve, align notch on back of blower
assembly with center screw on replace back and push blower
assembly against replace back. The blower wheel must be
centered with the back wall of the replace. Place blower assembly
against the back wall. The magnets on the back and bottom of
blower assembly will sufciently hold blower assembly in place.
5. Position speed control box to the right of gas valve. Attach speed
control box to bottom of replace. The magnets on the bottom
of speed control will sufciently hold the speed control box in
place.
6. With base (ush face) of fan control switch facing upward, insert
base anges of fan control switch under the mounting tabs on
valve bracket. The base (ush face) of fan control switch must
be in contract with bottom of the rebox.
7. Insert power cord plug into junction box.
8. Close bottom louver on replace.
Note: This blower is equipped with a heat activated fan control
switch. Fan will operate when the replace warms up, and will
turn off when the replace cools down.
9. Installation of FBB4 optional variable speed blower assembly is
completed.
Figure25
VALVE BRACKET
F
AN SWITCH
FAN KIT
SPEED CONTROL
JUNCTION BOX
SWITCH HOLDER
(TOP OF VALVE BRACKET)
SEE NOTE
OPTIONAL BLOWER
INSTA LLATIONIS
INTENDEDFOR
LOUVERED MODELS
ONLY.
OPTIONAL VARIABLE SPEED BLOWER INSTALLATION INSTRUCTIONS