Mendota GREENBRIAR M-50 Operations Instructions download pdf (Page 15)

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FRONT

GAS LINE INLET

1/2" MPT REQUIRED

GAS SUPPLY REQUIREMENTS

Correct gas pressure and proper gas supply line sizing is imperative to

the successful performance of your Mendota gas fireplace. Be sure the

gas supplier or plumber carefully checks for correct gas pressure and

gas line sizing when installing the fireplace.

• It is critical to carefully check for gas leaks when hooking up the

fireplace -- check with soap & water solution.

• Be sure to install "approved" flex gas line with brass-to-brass fit-

tings to prevent gas leaks at connections.

• Gas supply piping must include a drip leg to eliminate the possibility

of contaminants entering the gas train.

• Adhere strictly to local and national codes for entire installation.

• Correct gas pressure and proper gas supply line sizing is required.

GAS SUPPLY LINE SIZING

The Mendota Gas Fireplace comes equipped with a 1/2" N.P.T. Female

inlet on a Street Elbow. Gas supply piping must enter the Fireplace

cabinet on the left side.

An approved manual shut-off ball valve is supplied in the fireplace. The

appliance and its individual shut-off valve must be disconnected from

the gas supply piping system during any pressure testing of that system

at test pressures in excess

of ½ PSIG (3.5 kPa).

The appliance must be isolated from the gas supply piping system by

closing its manual shut-off ball valve during any pressure testing of the

gas supply piping system at test pressures equal to or less than

1/2

PSIG (3.5 kPa).

A proper gas line diameter must be selected to run from the supply regulator to the Fireplace. Refer to the following table

for proper gas pipe diameters. Strictly adhere to the correct pipe sizes.

PIPE LENGTH

(FEET)

SCHEDULE 40 PIPE

INSIDE DIA.

TUBING, TYPE L

OUTSIDE DIA.

NAT. L.P. NAT. L.P.

0-10 1/2" (1.3 cm) 3/8" (1.0 cm) 1/2" (1.3 cm) 3/8" (1.0 cm)

10-40 1/2" (1.3 cm) 1/2" (1.3 cm) 5/8" (1.6 cm) 1/2" (1.3 cm)

40-100 1/2" (1.3 cm) 1/2" (1.3 cm) 3/4" (2.0 cm) 1/2" (1.3 cm)

100-150 3/4" (2.0 cm) 1/2" (1.3 cm) 7/8" (2.3 cm) 5/8" (1.6 cm)

150-200 3/4" (2.0 cm) 1/2" (1.3 cm) 7/8" (2.3 cm) 3/4" (2.0 cm)

NOTE: Some areas allow coated stainless steel (CSST), copper tubing or galvanized pipe - check with local ap-

proval agencies and codes. NEVER use plastic pipe.

GAS PRESSURE CHECKING REQUIREMENTS

Inlet and manifold gas pressure checking taps are located on gas valve. A qualified installer shall take pressure mea-

surements at these ports to verify and set the correct gas pressures during initial installation.

NOTE: Check for gas leaks with soap and water solution.

Figure 9: Gas Supply

WARNING: Never use any type of pipe thread sealants or compounds on the seats of flare or compression connections.

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Mendota GREENBRIAR M-50 Operations Instructions Page 15

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