Superior VD1824NM Installation And Operation Instructions Manual page 12

INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
NOTE: When used as a vented heater,
appliance must be installed only in a solid-
fuel-burning fi replace with a working fl ue and
constructed of noncombustible material.
For Massachusetts Residents Only: Instal-
lation of this vented gas log set in the Com-
monwealth 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 fi replace 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 apply to you,
you must permanently open chimney fl ue
damper. You must install the damper clamp
accessory (to order, see Accessories, Page
37). This will ensure vented operation (see
Figure 10). The damper clamp will keep
damper open. Installation instructions are
included with clamp accessory.
See chart for minimum permanent fl ue open-
ing you must provide. Attach damper clamp so
the minimum permanent fl ue opening will be
maintained at all times.
Area of Various Standard
Round Flues
Diameter
5"
6"
7"
8"
Chimney Minimum Permanent
Height Flue Opening
6' to 15'
15' to 30'
12
INSTALLATION
Continued
Area
20 sq. in.
29 sq. in.
39 sq. in.
51 sq. in.
39 sq. in.
29 sq. in.
SuperiorFireplaces.US.com
Damper
Clamp
Damper
Clamp
Damper
Masonry Fireplace Manufactured Fireplace
Figure 10 - Attaching Damper Clamp
INSTALLING HEATER BASE
ASSEMBLY
WARNING: You must secure this
heater to fi replace fl oor. 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
fi replace, special care is needed. You
must raise the fi replace fl oor to allow
access to heater control panel. This
will ensure adequate air fl ow and
guard against sooting and controls
being damaged. Raise fi replace fl oor
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 grates.
IMPORTANT: Make sure the heater burners
are level. If heater is not level, heater will not
work properly.
Damper
Damper
126838-01C