Comfort Glow GA3450T User manual

WARNING
Fanaccessorymustbegrounded.Fancomes
withathree-prong,groundingplugasshown
inFigure1.Theplugisyourprotectionagainst
electrical shock. Plug it into a standard,
three-hole, grounded, outlet. If cord needs
replacing,useonlyacordwithathree-prong,
grounding plug.
Instructions For Installing GA3450T
Thermostat Blower Accessory
Grounding Plug
Figure 1 - Grounding Plug
Grounded Outlet
Removing Upper Louver Assembly
To install the blower accessory, you must first remove the upper louver assembly.
Figure 2 - Removing Upper Louver Assembly
Continued
Cordlengthfromswitchplateassemblytoplug
is six feet. Make sure grounded outlet is an
appropriate distance from unit.
NOTICE
GA3450T for use on CGCF26T Series Compact Fireplace
Upper Louver
Assembly
Blower Bracket
Mounting Holes
CGCF26T Series
1. Lift screen off heater.
2. Remove 2 screws from louver assembly (see Figure 2). Save these screws.
3. Pull louver assembly straight out from the cabinet. Be careful not to scratch the paint. Set louver assembly and
screws aside.
WARNING
Failuretoconnectall wiresasindicatedmay
cause electrical shock or personal injury.
If any of these pieces are missing or damaged, contact the
dealer where you purchased this kit or DESA Interna-
tional at 1-800-972-7879 for referral information.
Hardware kit contains
2 Plastic snap bushings
6 #10 screws
1 Plug button
Carton Contents
Description Part Number
Bracket 103966-01
Thermodisc 103972-01
Blower 103283-01
Wire Harness 103968-01
Power Cord 104015-01
AUTO/OFF/ON switch 099998-01
Mounting Hardware kit 098418-08

2
104079
Wire
Harness
1
2
Bottom Louver
Assembly
Remove
Screw Valve
Cover
Shield
Shoulder
Screw
Installing Blower Assembly
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 3.
Standard Installation
Removing Valve Cover Shield
1. Open bottom louver assembly by swinging
the assembly down (see Figure 3).
2. Using short Phillips screwdriver, remove the
screw under the center of the branch support.
Rotatevalvecovershieldclockwiseandslide
out. IMPORTANT : Do not remove shoulder
screw on the left side of valve cover shield.
Slide the valve cover shield off of the shoul-
der screw (see Figure 3).
Note: If you do not have a short Phillips
screwdriver, the screen, twigs, and branch
support must be removed so a longer
screwdriver may be used. Follow directions
in the owner’s manual for screen and twig
removal/installation. Branch support may
be removed by removing 2 screws on each
side of the support.
Figure 3 - Removing Valve Cover Shield
Figure 4 - Installing Blower Bracket Assembly
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.
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 4).
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 4).
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 4).
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 4).
8. Reconnect red wire to switch position 3.
Reconnect blue wire to switch position 1.
Reconnect green and white wires.
Blower Bracket
Assembly
Screw
Power
Cord
Valve
Cover
Shield Box Cover
Wire
Harness
Switch
Plate
Switch
Baffle
Branch Support
Wiring Routing
Hole in Baffle
Snap
Bushings
3
2
1
Blue Red

104079
3
WARNING
A licensed electrician must connect the wiring harness to electrical supply following all local
codes. Electrician must provide a clamp on the box cover to secure the wiring. Wiring should be
routed through the bushing in the hole on the outer casing of heater.
Figure 5 - Installing Switch Plate to Valve Cover Shield
Follow instructions Removing Valve Cover
Shield (page 2), then
1. Install a snap bushing found in hard-
ware kit into one of the holes found rear
of valve cover shield. The other hole is
for a strain relief clamp (not supplied)
to secure incoming electrical supply.
2. Follow steps 2 through 6 in Installing
Blower Assembly, page 2. Also remove
black wire from middle switch terminal 2.
3. Remove black plastic strain relief and
power cord from switch plate. The
power cord supplied will not be used in
built-in installations. Pop in the plastic
snap bushing found in hardware kit into
the hole left by supply cord/strain relief.
4. A licensed electrician must follow the
wiring diagram on page 4 to connect
incoming electrical supply to fan kit
wiring harness.
5. Reinstall valve cover shield.
6. Test to make sure the blower is working
properly.
7. Reinstall upper louver assembly (see
Figure 1, page 1) and close lower
louver.
For Built-In Installation
Figure 6 - Installing Blower Bracket Assembly
Continued
Blower Bracket
Assembly
Screw
Wire
Harness
Power
Cord
Valve
Cover
Shield Box Cover Wire
Harness
Switch
Plate
Switch
Clamp Connector
(not included)
Valve Cover Shield
Switch Plate
Screw
Outlet
Receptacle
9. Install the switch plate on the valve
cover shield with 2 #10 screws provided
(see Figure 5, page 3). Reinstall the
valve cover shield. Route power cord out
of the cabinet by inserting it through the
bushing on the outer casing (see Figure
4). Plug fan kit into 120-Volt grounded
power supply and test operation. Note:
When switch is in the AUTO position,
the fan will start after the heater has run
for a few moments. The fan will con-
tinue to run for several moments after
the heater has been turned off. When
switch is in the ON position, the fan will
run until turned to OFF. Reinstall upper
louver assembly (see Figure 1, page 1)
and close lower louver door.
Blue Red
3
2
1

OFF
ON
Extension Cord
Use extension cord if needed. The cord must have a
three-prong, grounding plug and a three-hole receptacle.
Make sure cord is in good shape. It must be heavy
enough to carry the current needed. An undersized cord
will cause a drop in line voltage. This will result in loss
of power and overheating. Use a No. 16 AWG cord for
lengths less than 50 feet.
104079-01
REV. B
8/97
Red
Red
Fan Switch
(Auto/Off/On)
Blue
Blue
Thermostat
Switch
(N.O.)
Green
White Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
1
23
Auto
Figure 7 - Wiring Diagram For Fan Accessory Standard Installation
Operating Fan
This blower has three settings: ON, OFF, and AUTO.
In the ON position, the blower will operate con-
stantly. In the OFF position, the blower will not
operate. In the AUTO position, the blower will start
when the thermostat senses a sufficient increase in
firebox temperature.
Note: Your fireplace and thermostat blower will not
turn on and off at the same time. The fireplace may
run for several minutes before the blower turns on.
After the heater modulates to the pilot position, the
blower will continue to run. The blower will shut off
after the firebox temperature decreases.
Note: It is safe to operate fireplace with blower
turned off. However, the blower helps distribute
heated air from the fireplace.
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
Technical Service Department 1-800-323-5190
Parts Department 1-800-972-7879
Figure 8 - Auto/Off/On Switch
Auto/Off/On Switch