Installing Damper Clamp Accessory For Vented Operation; Installing Heater Base Assembly - Desa LDL3924NR Owner's Operation And Installation Manual

INSTALLATION
10

Installing Damper Clamp Accessory for Vented Operation

Installing Heater Base Assembly

INSTALLATION
Continued
INSTALLING DAMPER CLAMP ACCESSORY
FOR VENTED OPERATION
Note: When used as a vented heater, appliance must be installed
only in a solid-fuel burning fireplace with a working flue and
constructed of noncombustible material.
You may use this heater as a vented product. There are three reasons
for operating your heater in the vented mode.
1. The fireplace does not meet the clearance to combustibles re-
quirements for vent-free operation.
2. State or local codes do not permit vent-free operation.
3. You prefer vented operation.
If reasons number 1 or 2 above apply to you, you must permanently
open chimney flue damper. You must install the damper clamp
accessory (to order, see Accessories, page 27). This will insure vented
operation (see Figure 10). The damper clamp will keep damper open.
Installation instructions are included with clamp accessory.
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.
Area of Various Standard
Round Flues
Diameter (ins.)
5"
6"
7"
8"
Chimney
Height (ft.) Flue Opening (sq. ins.)
6' to 15'
15' to 30'
Damper Clamp
Damper
Masonry Fireplace
Manufactured Fireplace
Figure 10 - Attaching Damper Clamp
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Area (sq. ins.)
20 sq. inches
29 sq. inches
39 sq. inches
51 sq. inches
Minimum Permanent
39 sq. inches
29 sq. inches
Damper Clamp
Damper
INSTALLING HEATER BASE ASSEMBLY
WARNING: You must secure this heater to fire-
place 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, spe-
cial 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 con-
trols being damaged. Raise fireplace floor with noncom-
bustible material. Make sure material is secure.
CAUTION: Do not pick up heater base assembly by
burners. 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.
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 masonry 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 con-
trol fitting in heater (see Figure 11). 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).
Damper
Figure 11 - Attaching Flexible Gas Hose to Heater
Flexible Gas
Hose (if allowed
Fitting
by local codes)
111515-01A