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INSTALLATION
Continued
INSTALLING DAMPER CLAMP ACCESSORY
FOR VENTED OPERATION
(Remote-Ready Models Only)
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.
If your heater is a manually-controlled, 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 38). 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
108114
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 Damper Clamp Accessory For Vented Operation
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.
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.
Raise fireplace floor with noncombustible 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 sides of base.
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.
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 provided)
• electric drill with 3/16" drill bit (metal or masonry as applicable)
• flathead screwdriver
1.
Connect fitting to base as shown in Figure 11. Connect approved
flexible gas hose to fitting in base (see Figure 11).
IMPORTANT: Hold gas fitting with wrench when connecting
flexible gas hose.
Flexible Gas Hose (if
allowed by local codes)
Damper
Figure 11 - Attaching Flexible Gas Hose to Heater
INSTALLATION
Installing Heater Base Assembly
Fitting
11
11
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