MHSC BR36 Installation And Operating Manual page 18

BR/BC Series Woodburning Fireplaces
Installing Line For gas Log
MHSC fireplaces are designed to accept a 1/2 inch
gas line for installation of an approved gas appliance.
(MHSC manufactures a wide variety of gas logs for use
in MHSC fireplaces.)
Be sure to have the appliance installed in accordance
with building codes.
Gas connection may enter from either left or right side
of the fireplace.
Locate appropriate gas line in the outer casing of fire-
place and remove insulation from gas line tube. (Fig. 27)
From inside the fireplace, locate the knockout on the
firebrick -- be sure you are on the appropriate or "gas
line" side of the fireplace. Using a flat bladed screw-
driver or small chisel and hammer, carefully tap around
the knockout until it loosens and falls out.
Install 1/2 inch certified gas pipe through opening.
After gas pipe installation is complete, use insulation
that was removed from gas line tube to repack space
around the pipe. Material should be inserted from
outside of the fireplace and packed tightly to totally seal
between the pipe and tube.
Note: gas pipe should not come in contact with
any wood structures until it has reached a point at
least one (1) inch away from fireplace side.
NOTe: When installing an ANSI Z21.11.2 ventless ap-
pliance, the finishing material used for the mantel must
be rated at 250°F or greater.
BTU input of a gas appliance installed in fireplace
should be rated less than 100,000 BTU/Hr.
Gas pipe installation is intended for connection to a
decorative gas appliance only when (1.) incorporating
an automatic shutoff device and (2.) complying with the
Standard for Decorative Gas Appliances for Installa-
tion in Vented Fireplaces (ANSI Z21.60) or CSA draft
requirements for Gas-Fired Log Lighters for Woodburn-
ing Fireplaces (Draft No. 4, August 1993).
Decorative gas appliance should be installed in accor-
dance with the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 (latest edition).
18
Only unvented gas log sets which have been found to comply with
the Standard for Unvented Room Heaters, ANSI Z21.11.2, are to be
installed in this fireplace.
Hole in Outer Casing
Gas Line
Tube
Ceramic
Knockout
Hole in Outer
Casing
Fig. 27 Gas line access.
CAUTION: WHeN USINg DeCORATIVe
gAS APPLIANCe, FLUe DAMPeR MUST
Be SeT IN FULLY OPeN POSITION. IF
YOU HAVe gLASS DOORS ON THe FIRe-
PLACe, THeY MUST ALSO Be FULLY
OPeNeD.
WARNINg: DO NOT OPeRATe AN
UNVeNTeD gAS LOg SeT IN THIS FIRe-
PLACe WITH THe CHIMNeY ReMOVeD.
WARNINg: WHeN INSTALLINg AN
UNVeNTeD gAS LOg SeT, THe MHSC
MODeL CABL OR CABR 4" ADJUSTABLe
HOOD MUST Be USeD.
Fireplace Top View
1"
Min.
Supply Line
Repack Insulation
1/2"
Ceramic Knock-
out
(both sides)
FP560
WF560
BR/BC
11/10/97
7412944