Desa Ga3750a User Manual
INSTALLATION INSTRUCTIONS
GA3750A BLOWER ACCESSORY
For more information, visit www.desatech.com
For more information, visit www.desatech.com
For Use With:
Fireboxes: (NL)FB32C, (NL)FB36C, FB42C, (NL)UV32C, CGFB32C, and CGFB36C Series
Vent-Free Fireplaces: VSGF28, VYGF33, VTGF33, VCGF30, VSGF33, FPV33, CGFP28, LFP33 Series,
and (CG)EFP33 Series
Direct-Vent Fireplaces: (E)BDV, BHDV, DVF(E)34, DVFH34, CDV, and CHDV Series
Stoves: CSDBN, SDVB, MSDVB MSTD, CDV, S39T, and S26T Series
WARNING: ELECTRICAL GROUNDING INSTRUCTIONS This appliance is equipped with a three-prong
(grounding) plug for your protection against shock hazard and should be plugged directly into a properly
grounded three-prong receptacle.
(Check your appliance owner’s manual for specific applications and additional instructions.)
Parts included with this kit:
Part No. Description Quantity
Blower with speed control and 6-foot cord. 1
Instruction Sheet 1
103650-01 Control Knob 1
103651-01 Lock Nut 1
M11084-38 #8 x 3/8" sheet metal screws 5
101629-01 Plastic Hole Bushings 2
101584-05 Wiring Diagram Decal 1
Tools Required
• Pliers
• Phillips Screwdriver
If any of these pieces are missing or damaged, or if the installation instructions for your fireplace or stove are not included in this manual,
contact the dealer where you purchased this kit or DESA at 1-866-672-6040 for referral information.
Save this manual for future reference.
Save this manual for future reference.
INSTALLING BLOWER ACCESSORY IN A 32" FIREBOX
2
INSTALLING BLOWER
ACCESSORY IN A 32" FIREBOX
NOTICE: If a log set is currently installed in the firebox,
disconnect log set from gas supply and remove from
firebox. Contact a qualified service person to do this.
Note:
Appearance of firebox may vary slightly depending on
model.
1. Remove the firebox bottom:
a. Remove the 4 screws that secure the bottom of the firebox
(see Figure 1).
b. Carefully raise and remove the firebox bottom from the
firebox.
WARNING: If there is a duplex electrical outlet
installed in the right side of the bottom of the fireplace
base area, be sure that the electrical power to the outlet
is turned off before proceeding with blower installation. Failure to do this may result in serious injury.
2. Attach the power cord to the blower motor by firmly pushing the two
female terminals at the end of the power cord onto the two spade
terminals on the blower motor.
3. Attach green ground wire from power cord to blower housing using screw provided (see Figure 2). Tighten screws securely.
4. Place the blower against lower rear wall of firebox wrapper
with the exhaust port directed upward. Align the holes in top
mounting tabs of blower with holes in wall of wrapper (see
Figure 2). Using 2 screws provided, mount blower and tighten
screws securely.
5. Be certain that all wire terminals are securely attached to terminals on blower motor and that the screw retaining the green
ground wire is tight.
6. Locate the plastic hole plug installed in the 3/8" diameter opening in the lower right side of the firebox front panel (see Figure 2). Remove the plastic plug and discard.
7. Place speed control against inner wall of front panel, pushing the
plastic control shaft forward through the opening (see Figure 3).
8. While supporting speed control, secure control shaft with lock
nut by pushing and turning lock nut with pliers clockwise until it is tight against front panel. Place control knob provided
on shaft (see Figure 3).
9. Plug in blower power cord.
a. If your fir ebox is installed as a freestanding unit, determine
whether the power cord will exit the left side or the right side
of the firebox. Install 1 plastic bushing provided into the 1
1
/2"
hole in the floor support on the exit side. Install the second
plastic bushing provided into the 11/2" hole in the outer casing
through which the power cord will exit (see Figure 4). Route
power cord through both plastic bushings and plug the power
cord into a 3-prong grounded wall receptacle near the firebox.
b.If your fir ebox installation is r ecessed and/or pr e-wired,
plug the power cord into the duplex outlet provided. Refer
to your firebox owner’s manual for instructions on wiring
the duplex outlet.
CAUTION: Never touch the blower wheel while in
operation.
Exhaust Port
Screw
Figure 2 - Mounting Blower to Firebox
Note:
Appearance of fireplace may vary by model.
Lower Rear Wall
of Firebox Wrapper
Top
Mounting
Tab
Screws
Blower
Floor
Supports
Plastic
Hole Plug
Screws
Figure 1 - Removing Screws from Firebox Bottom
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For more information, visit www.desatech.com
Speed Control
Control
Knob
Figure 3 - Attaching Speed
Control
Control Shaft
Lock
Nut
Plastic
Bushing
Figure 4 - Installing Plastic
Bushing for Power Cord
108319-01B
INSTALLING BLOWER ACCESSORY IN A 32" FIREBOX
INSTALLING BLOWER ACCESSORY IN 36" OR 42" FIREBOX
INSTALLING BLOWER
ACCESSORY IN A 32" FIREBOX
Continued
3
3
10. Turn on power to duplex outlet if previously turned off per the
warning in step 1, page 2.
11. Check to make sure that the power cord is completely clear of
the blower wheel and that there are no other foreign objects in
blower wheel. Turn blower on and check for operation.
12. Peel off the backing paper and stick the supplied wiring diagram decal on the firebox bottom approximately 12" in front
of the blower.
13. Replace bottom of firebox.
firebox bottom slides under the rear of the firebrick (lift the
firebrick up if necessary.)
14. Reattach firebox bottom using 4 screws removed in step 1,
page 2.
15. Install the log set heater according to the installation instructions supplied with the heater.
Note:
Discard the remaining hardware items.
Note:
Make sure the back of the
OPERATING THE BLOWER
Light your gas appliance with the blower off. After about 15
minutes, turn the blower on to deliver heated air at the top louvers.
The blower features a variable control which allows you to select the
speed you desire.
Note:
Periodically check the louvers of the firebox and remove any
dust, dirt or other obstructions.
d.Carefully lift and remove the concrete firebrick floor from
the firebox if installed (see Figure 5).
2. Remove the firebox bottom.
a. Remove the 4 screws that secure the bottom of the firebox
(see Figure 8).
b. Carefully raise and remove the firebox bottom from the firebox.
WARNING: If there is a duplex electrical outlet
installed in the right side of the bottom of the fireplace
base area, be sure that the electrical power to the outlet
is turned off before proceeding with the blower installation. Failure to do this may result in serious injury.
3. Attach the power cord to the blower motor by firmly pushing
the two female terminals at the end of the power cord onto the
two spade terminals on the blower motor.
Retainer Bracket
Screw
INSTALLING BLOWER
ACCESSORY IN 36" OR 42"
FIREBOX
NOTICE: If a log set is installed in the firebox, disconnect log set from gas supply and remove from firebox.
Contact a qualified service person to do this.
Note:
Appearance of firebox may vary depending on model.
1. If firebrick is installed, carefully lift and remove the concrete
firebrick floor from the firebox (see Figure 5). Some model
fireboxes require that you remove the side and rear panels first.
Follow the directions below to remove the side and rear firebrick panels for those fireboxes.
a. Using a Phillips screwdriver, remove the screw and retainer
bracket at the top of the brick liner panel on the left side. Carefully remove the left panel from the firebox (see Figure 6).
b. Repeat the removal steps for the brick liner panel on the
right side.
c. Remove the screw and retainer bracket at the top of the brick
liner panel at the rear of the firebox.
let panel fall after bracket has bee removed. Carefully remove the rear panel from the firebox (see Figure 7).
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For more information, visit www.desatech.com
108319-01B
IMPORTANT:
Do not
Firebrick Floor
Figure 5 - Removing Firebrick
Floor from Firebox
Screw
Back
Panel
Figure 7 - Removing Back
Panel from Firebox
Retainer Bracket
Left Panel
Figure 6 - Removing Left Panel
from Firebox
Screws
Figure 8 - Removing Firebox
Bottom
INSTALLING BLOWER ACCESSORY IN 36" OR 42" FIREBOX
4
INSTALLING BLOWER
ACCESSORY IN 36" OR 42"
FIREBOX
Continued
4. Attach green ground wire from power cord to blower housing
using screw provided (see Figure 9). Tighten screws securely.
5. Place the blower against the lower rear wall of the firebox outer
wrapper with the exhaust port directed upward. Align the holes
in top mounting tabs of blower with holes in wall of wrapper
(see Figure 9). Using 2 screws provided, mount blower and
tighten screws securely.
6. Be certain that all wire terminals are securely attached to terminals on blower motor and that the screw retaining the green
ground wire is tight.
7. Locate the plastic hole plug installed in the 3/8" diameter opening in the lower right side of the firebox front panel (see Figure 10). Remove the plastic plug and discard.
Exhaust Port
Top Mounting
Tab
Lower Rear Wall of
Firebox Wrapper
8. Place speed control against inner wall of front panel, pushing
the plastic control shaft forward through the opening.
9. While supporting speed control, secure control shaft with lock
nut by pushing and turning lock nut with pliers clockwise until it is tight against front panel. Place control knob provided
on shaft (see Figure 11).
10. Turn on power to duplex outlet if previously turned off per the
warning in column 2, page 3.
11. Plug in blower power cord.
a. If your firebox is installed as a freestanding unit with an
accessory mantel, determine whether the power cord will
exit the left side or the right side of the firebox. Install 1 plastic bushing provided into the 1 1/2" hole in the floor support on
the exit side. Install the second plastic bushing provided into
the 11/2" hole in the outer casing through which the power
cord will exit (see Figures 10 and 12). Route power cord
through both plastic bushings and plug the power cord into a
wall receptacle near the firebox.
Speed Control
Screw
Screws
Blower
Figure 9 - Mounting Blower to Firebox
Plastic
Bushing
1 1/2" Hole
Plastic
Hole Plug
Figure 10 - Installing Plastic Bushing for Power Cord
Control Shaft
Control Knob
Locknut
Figure 11 - Attaching Speed Control to Firebox
Floor
Supports
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Wiring Diagram Decal 12"
in Front of Blower
Figure 12 - Location of Wiring Diagram Decal
1
/2" Hole
1
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108319-01B
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