Installing Line for Gas Logs

SR/SC Series "A" Woodburning Fireplace

MHSC ﬁreplaces are designed to accept a 1/2" (13 mm) 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. 26)

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" (13 mm) 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).

Hole in Outer Casing	Fireplace Top View

	1"
Gas Line	Min.	Supply
Tube		Line
Ceramic		Repack Insula-
Knockout		tion

1/2"

Hole in

Casing

Ceramic

Knockout (Both sides)

FP560

Fig. 26 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 FIREPLACE, 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 AH3244BK OR AH3244PB 4" AD-

JUSTABLE HOOD MUST BE USED.

If installing an unvented gas log set, refer to statement below:

Only unvented gas logsets which have been found to com- ply with the Standard for Unvented Room Heaters, ANSI Z21.11.2, are to be installed in this ﬁreplace.

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