Desa CDR3924NT installation manual Installing Heater Base Assembly, Installation Items Needed

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.

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 in- sure adequate air flow and guard against sooting and controls be- ingdamaged.Raisefireplacefloor with noncombustible 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 sides of base.

IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. 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 24.

Installation Items Needed

•hardware package (provided with heater)

•approved flexible gas hose and fitting (not provided) (if allowed by local codes)

•sealant (resistant to propane/LP gas, not pro- vided)

•electric drill with 3/16" drill bit (metal or ma- sonry as applicable)

•flathead screwdriver

1.Connect fitting to base as shown in Figure 10. Connect approved flexible gas hose to fitting in base (see Figure 10).

IMPORTANT: Hold gas fitting 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 14).

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 mounting bracket (see Figure 11). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks.

8.Remove heater base from fireplace. If install- ing optional control accessories, do so at this time. Follow all directions provided with accessory.

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).

Flexible Gas
Hose (if allowed	Fitting
by local codes)

Figure 10 - Attaching Flexible Gas Hose

to Heater

Mounting
Flange	Masonry
	Screw
Figure 11 - Attaching Base Assembly to
	Fireplace Floor

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