Desa (V)3612ST - Manual (Page 12)

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refractory cement or commercial furnace
cement, Install the gas appliance or cap
off gas line if desired.
CAUTION: All gas piping
and connections must be tested
for leaks after the installation
is completed. After ensuring
that the gas valve is on, apply
soap and water solution to all
connections and joints. Bubbles
forming show a leak. Correct
all leaks at once. DO NOT USE
AN OPEN FLAME FOR LEAK
TESTING AND DO NOT OPER-
ATE ANY APPLIANCE IF A LEAK
IS DETECTED. LEAK TESTING
SHOULD BE DONE BY A QUALI-
FIED SERVICE PERSON.
Figure 29 - Gas Line Knockout
Side
Firebrick
Finished
Side
Refractory
Knockout
Plug
Outside of
Fireplace
Gas Line
Conduit
Insulation
Gas
Conduit
Cover
1/2" Dowel
Remove
Knockout
opTional gaS line inSTallaTion
Seal
Opening
with
Refractory
Cement
Outside of
Fireplace
Gas
Line
Conduit
Repack
Insulation
Incoming
1/2" Black
Iron Pipe
Side
Firebrick
Finished
Side
Provide Enough Threaded
End for Fitting Connection
Figure 30 - Gas Line Installation
WARNING: A qualified
service person must connect
fireplace to gas supply. Follow
all local codes.
NOTICE: Before you proceed, make sure your
gas supply is turned off.
A gas line may be installed for the purpose
of installing a vented or vent-free decorative
gas appliance available through your local
distributor. Use only gas piping approved
by local codes. When installing a gas line, a
shutoff valve designed for installation outside
the appliance is recommended.
The gas pipe is intended for connection to
a decorative gas appliance that operates
using natural or propane/LP gas only. This
appliance must have an automatic shutoff
device and must comply with the Standard
for Decorative Gas Appliances for Installa-
tion in Vented Fireplace, ANSI Z21.60-1990.
ONLY UNVENTED GAS LOG SETS WHICH
HAVE BEEN FOUND TO COMPLY WITH
THE STANDARD FOR UNVENTED ROOM
HEATERS, ANSI/IAS/AGA Z21.11.2, ARE TO
BE INSTALLED IN THIS FIREPLACE.
Use only a 1/2" black iron pipe and appropri-
ate fittings.
1. Remove knockout indentation on refrac-
tory or firebrick wall located approximately
2" above the refractory hearth floor. The
knockout indentation must be firmly tapped
with any solid object such as a 1/2" dowel
until it is released. Remove fragmented
portions of refractory (see Figure 29).
2. Remove gas line cover plate located on
rear of fireplace and pull out insulation from
gas line conduit sleeve. Save insulation for
reuse.
3. Run gas line into the fireplace through
the rear at 11 1 /
4
" from floor and through
gas line conduit sleeve (if using a raised
platform, add height). Provide sufficient
gas line into fireplace chamber for fitting
connection (see Figure 30).
Note: Secure incoming gas line to
wood framing to provide rigidity for
threaded end.
4. Repack insulation around gas line and into
sleeve opening. Seal any gaps between
gas line and refractory knockout hole with