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

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).

Heater Gas

Regulator Flexible Gas

Hose (if allowed

by local codes)

Fitting

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

Masonry

Screw

Screw

Holes

in Base

Figure 12 - Attaching Heater to

Fireplace Floor

12

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Desa CDL3924NT, CDL3924PT, LSL3124P installation manual Installing Heater Base Assembly, Installation Items Needed

LSL3124P, CDL3924PT, CDL3924NT specifications

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