Desa CDL3924NT Owner's Operation And Installation Manual page 12

INSTALLATION
Continued
INSTALLING HEATER BASE
ASSEMBLY
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 or log
misplacement.
WARNING: If installing in a
sunken fireplace, special care
is needed. You must raise the
fireplace floor to allow access
to heater control panel. This
will insure adequate air flow
and guard against sooting and
controls being damaged. Raise
fireplace floor with noncombus-
tible material. Make sure material
is secure.
CAUTION: Do not pick up
heater base assembly by burn-
ers. This could damage heater.
Only handle base assembly 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, page 25.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose and fittings (not
provided) (if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit (metal or ma-
sonry as applicable)
• flathead screwdriver
• pipe wrench
12
1. Apply pipe joint sealant lightly to male
threads of gas fitting (not provided). Connect
approved flexible gas hose to gas regulator of
heater (see Figure 11). IMPORTANT: Hold
gas regulator with wrench when connecting
flexible gas hose.
2. Locate two masonry screws in hardware
package.
3. Place heater base in fireplace.
4. Place logs in their proper position on heater
base (see Installing Logs, page 15).
5. Center heater base and logs front-to-back and
side-to-side in fireplace.
6. Carefully remove logs without moving heater
base.
7. Mark screw locations through one hole on
each side of the base (see Figure 12). If install-
ing in a brick-bottom fireplace, mark screw
locations in mortar joint of bricks.
8. Remove heater base from fireplace.
9. Drill holes at marked locations using 3/16"
drill bit.
10. Attach base assembly to fireplace floor using
two masonry screws (in hardware package).
Figure 11 - Attaching Flexible Gas Hose
Figure 12 - Attaching Heater to
www.desatech.com
Heater Gas
Regulator
Fitting
to Heater Gas Regulator
Masonry
Screw
Fireplace Floor
Flexible Gas
Hose (if allowed
by local codes)
Screw
Holes
in Base
111347-01E