Monessen Hearth PL20 operating instructions 3” Min, Fireplace Installation, 90D0093

Models: PL20

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3” Min.

FIREPLACE INSTALLATION

Parlor Vent Free Fireplace

NOTICE: A qualified gas appliance installer must connect the heater to the gas supply. Consult all local codes.

WARNING

Use new black iron or steel pipe. Internally tinned copper or copper tubing can be used per National Fuel Code, section 2.6.3, providing gas meets hydrogen sulfide limits, and where permitted by local codes. Gas piping system must be sized to provide minimum inlet pressure (Listed on Data Plate) at the maximum flow rate (BTU/hr). Undue pressure loss will occur if the pipe is too small.

A manual shutoff valve must be installed upstream of the appliance. Union tee and plugged 1/8" NPT pressure tapping point should be installed upstream of the appliance. Figure 10

A sediment trap should be installed upstream to prevent moisture and contaminants from passing through the pipe to appliance controls and burners. Failure to do so could prevent the appliance from operating reliable. Figure 11

To Fireplace

 

Pipe Coupling

Stainless

Pipe

 

Flexible Tube

Locations Pressure Tapping

 

 

Point Installation

 

Gas Supply

 

Inlet

Manual Shutoff

Valve

Figure 13 -

Gas Connection

Tee Joint Manual background

Sediment Trap

Pipe Nipple

3” Min.

Cap Manual background FP2447

IMPORTANT: Loosen the pipe adapter on the flex tube before installing to the system piping.

Always use an external regulator for all propane/LPG heaters only, to reduce the supply tank pressure to a maximum of 13" w.c. This is in addition to the internal regulator in the heater valve.

WARNING

Check gas type: The gas supply must be the same as stated on the heater’s rating plate. If the gas supply is different, DO NOT INSTALL THE HEATER. Contact your dealer for the correct model.

90D0093

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Monessen Hearth PL20 operating instructions 3” Min, Fireplace Installation, 90D0093