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INSTALLATION
12
Installing Blower Accessory - GA3450T (Cont.)
INSTALLATION
Continued
Removing Valve Cover Shield
1. Open bottom louver assembly by swinging the assembly down
(see Figure 17).
2. Using short Phillips screwdriver, remove the screw under the
center of the branch support. Rotate valve cover shield clock-
wise and slide out. IMPORTANT: Do not remove shoulder
screw on the left side of valve cover shield. Slide the valve
cover shield off of the shoulder screw (see Figure 17).
Note: If you do not have a short Phillips screwdriver, the screen,
log set, and branch support must be removed so a longer screw-
driver may be used. See Connecting Equipment Shutoff Valve
to Heater Control, page 15, steps 1 and 2.
Shoulder Screw
Remove
Valve Cover
Screw
Shield
2
Snap Bushings
Figure 17 - Removing Valve Cover Shield
Installing Blower Assembly
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
CAUTION: Verify proper operation after servicing.
Note: If you are using a mantel with your heater, use the following
instructions. If your heater is built-in, see For Built-In Installation
on page 13.
1. Install snap bushings found in hardware kit into both holes in
rear of valve cover shield.
2.
Make sure the wire harness is firmly connected to the terminals
on the blower bracket assembly.
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Branch Support
1
Bottom Louver
Assembly
3. Note the wire locations on back of AUTO/OFF/ON switch.
The terminals on back of switch are numbered 1, 2, and 3.
Carefully remove red wire from terminal 1 and blue wire from
terminal 3. Black wire can remain on middle terminal 2 (see
Figure 18).
4. Carefully disconnect green and white wires at their insulated
connectors.
5. In top of the heater cabinet, locate the four mounting holes on
the outer casing. Align these four holes with those on the blower
bracket assembly. Attach blower bracket assembly to the outer
casing with 4 #10 screws provided (see Figure 18).
6. Route the wire harness through the hole in left side of baffle.
Pull wire harness through lower opening above where the
valve shield was removed. (see Figure 18).
7.
Insert the 4 wire harness into one of the round holes in the rear
of the valve cover shield and through the rectangular hole in
the front of shield (see Figure 18).
8.
Reconnect red wire to switch position 3. Reconnect blue wire
to switch position 1. Reconnect green and white wires.
Blower Bracket
Assembly
Screw
Switch
Power
Cord
3
2
1
Red
Switch
Plate
Blue
Valve Cover
Shield
Box Cover
Figure 18 - Installing Blower Bracket Assembly
Wiring Routing
Wire
Hole in Baffle
Harness
Baffle
Wire
Harness
111044-01C
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