Heat & Glo LifeStyle ST-42TVFL-IPI Step Gas Pressure Requirements, Gas Supply Line, Natural Gas

18

The gas line should be installed by a qualified service technician.

Step 8

Gas Pressure

Requirements

•At the gas line access hole, use insulation to re- pack the space around the gas pipe.

•Insert insulation from the outside of the fireplace and pack the insulation tightly to totally seal between the pipe and the outer casing.

	USE A WRENCH ON
	SHUT-OFF VALVE
	WHEN TIGHTENING
	GAS LINE
	MANUAL
	SHUT-OFF
	VALVE
GAS LINE	GAS VALVE
ACCESS	FLEX
	CONNECTOR

Figure 9. Gas Supply Line

Pressure requirements for Heat & Glo gas fireplaces are shown in the table below.

Pressure	Natural Gas	Propane
Minimum	5.0 inches	11.0 inches
Inlet Pressure	w.c.	w.c.
Maximum Inlet	14.0 inches	14.0 inches
Gas Pressure	w.c.	w.c.
Manifold	3.5 inches	10.0 inches
Pressure	w.c.	w.c.

A one-eighth (1/8) inch (3 mm) N.P.T. plugged tapping is provided on the inlet and outlet side of the gas control for a test gauge connection to measure the manifold pressure.

The fireplace and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of the system at test pressures in excess of one-half (1/2) psig (3.5 kPa).

The fireplace must be isolated from the gas supply piping system by closing its individual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than one- half (1/2) psig (3.5 kPa).

Heat & Glo • ST-42TVFL-IPI • 455-902 Rev. C • 12/07