Desa cGS2718PA Owner's Operation And Installation Manual page 12

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.
For Massachusetts Residents Only:
lation of this gas log set as a vented appliance in
the Commonwealth of Massachusetts requires the
damper be permanently removed or welded in the
fully open position.
If your heater is a manually-controlled model, 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 requirements 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 31). 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.
Chimney
Height
' to 15'
15' to 30'
Area of Various Standard Round Flues
Diameter
5"
"
"
8"
1
Minimum permanent
Flue Opening
39 sq. inches
9 sq. inches
Area
0 sq. inches
9 sq. inches
39 sq. inches
51 sq. inches
www.desatech.com
Damper
Instal-
Masonry Fireplace
Figure 10 - Attaching Damper Clamp
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
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-
ing damaged. Raise fireplace floor
with noncombustible material.
Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by the
burner. This could damage
heater. Only handle base as-
sembly by grates.
Damper
Clamp
Damper
Manufactured
Fireplace
Damper
113101-01E