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104190
Blue Flame Vent-Free Natural Gas Heater
CGN20TA
16"
18 3/4"
Min.
7 1/4"
Min.
Adjoining Wall
Only Insert Mounting
Screws Through Last
Hole On Each End
Floor
Marking Screw Locations
1. Tape mounting bracket to wall where
heater will be located. Make sure
mounting bracket is level.
Figure 8 - Mounting Bracket Clearances
WARNING: Maintain minimum
clearances shown in Figure 8. If
you can, provide greater clear-
ances from floor and joining wall.
INSTALLING HEATER TO
WALL
Mounting Bracket
The mounting bracket is located on back
panel of heater. It has been taped there for
shipping. Remove mounting bracket from
back panel.
Figure 6 - Bracket Location
INSTALLATION
Continued
Figure 7 - Removing Front Panel Of Heater
Methods For Attaching
Mounting Bracket To Wall
Only use last hole on each end of mounting
bracket to attach bracket to wall. These two
holes are 16 inches apart from their centers.
Attach mounting bracket to wall in one of
two ways.
1. Attaching to wall stud
2. Attaching to wall anchor
Attaching to wall stud
This method provides the strongest hold.
Insert mounting screws through mounting
bracket and into wall studs.
Attaching to wall anchor
This method allows you to attach mounting
bracket to hollow walls (wall areas between
studs) or to solid walls (concrete or ma-
sonry).
Decide which method better suits your needs.
Either method will provide a secure hold for
the mounting bracket.
Figure 5 - Attaching Thermostat Sensing
Bulb
Clamp
Thermostat
Sensing Bulb
Removing Front Panel Of Heater
1. Remove two screws near bottom cor-
ners of front panel.
2. Lift straight up on grill guard until it stops.
Grill guard will slide up about 1/4".
3. Pull bottom of front panel forward, then
downward.
4. Remove cardboard packing from grill
and glass.
2. Mark screw locations on wall (see Fig-
ure 8).
Note:
Only mark last hole on each end
of mounting bracket. Insert mounting
screws through these holes only.
3. Remove tape and mounting bracket
from wall.
THERMOSTAT SENSING
BULB
The thermostat sensing bulb has been placed
inside the heater for protection during ship-
ping.
Locating Thermostat Sensing
Bulb
1. Remove front panel of heater (see Fig-
ure 7, page 8).
2. Locate thermostat sensing bulb just
under burner assembly.
IMPORTANT:
Attach thermostat sensing
bulb to back of heater for proper operation.
Attaching Thermostat Sensing
Bulb
1. Remove thermostat sensing bulb from
holders inside heater. Route through
slot opening in bottom of heater.
2. Place clamp on thermostat sensing bulb
as shown in Figure 5. Clamp is pro-
vided in hardware package.
3. Snap clamp into upper mounting hole
as shown in Figure 5. Mounting hole is
located on lower left edge on back of
heater. Make sure the thermostat sens-
ing bulb is pointing up.
Mounting
Bracket