Desa CGD3018PT/NT - Manual (Page 12)

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INSTALLATION
Continued
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove
the data plates attached to the
heater base assembly. The data
plates contain important war-
ranty and safety information.
WARNING: You must secure
this heater to fireplace floor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
WARNING: If installing in a
sunken fireplace, special care is
needed. You must raise the fire-
place floor to allow access to
heater control panel. This will in-
sure adequate air flow and guard
against sooting and controls be-
ing damaged. Raise fireplace floor
with noncombustible material.
Make sure material is secure.
Figure 12 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Heater Gas
Regulator
Flexible Gas Hose
(if allowed by local codes)
Fitting
CAUTION: Do not pick up
heater base assembly by the
burner. This could damage
heater. Only handle base assem-
bly by grates.
IMPORTANT: Make sure the heater burners are
level. If heater is not level, heater will not work
properly. For thermostat models, avoid damage to
thermostat bulb. Avoid nicks or sharp bends in
thermostat bulb wire. Keep thermostat bulb in
mounting bracket until ready to mount base to
floor. See Optional Positioning Of Thermostat
Sensing Bulb, pages 29 and 30.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided) (if
allowed by local codes)
• sealant resistant to propane (propane/LP) gas,
not provided
• electric drill with 3/16" drill bit
• flathead screwdriver
1. Apply pipe joint sealant lightly to male threads
of the fitting to be threaded into gas regulator.
Connect approved flexible gas hose to gas
regulator of heater (see Figure 12).
IMPORTANT:
Hold gas regulator with
wrench when connecting flexible gas hose.
2. Locate masonry screws in hardware package.
3. Position heater base assembly in fireplace.
4. Place logs in their proper position on heater base,
see Installing Logs on pages 16 through 19.
5. Center heater base and logs front-to-back and
side-to-side in fireplace.
6. Carefully remove logs without moving heater
base.
Area of Various Standard
Round Flues
Diameter (in.) Area (sq. in.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. in.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
See chart below for minimum permanent flue
opening you must provide. Attach damper clamp
so the minimum permanent flue opening will be
maintained at all times.