Monessen Hearth HDV500NV/PV Indoor Fireplace User Manual


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56D3048
7
HDV Series Direct Vent Gas Fireplace


Use proper gas type for the fireplace you are installing. If you have conflicting gas type, do not install fire-
place. See dealer where you purchased the fireplace for proper fireplace according to your gas type.



   

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    
    
     
    



Before installing fireplace and burner system, make sure you have the items listed below.
• External regulator (supplied by installer) • Sealant (resistant to propane/LP gas)
• Tee joint • Test gauge connection*
• Piping (check local codes) • Sediment trap (optional but recommended)
• Pipe wrench
• approved flexible gas line with gas connector (if allowed by local codes — not provided)
* A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the CSA design-certified equipment shutoff valve from your
dealer.
For propane/LP connections only, the installer must supply an external regulator. The external regula-
tor will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and
13 inches of water. If you do not reduce incoming gas pressure, burner system regulator damage
could occur. Install external regulator with the vent pointing down as shown in Figure 41. Pointing
the vent down protects it from freezing rain or sleet.
FP1977
external regulator
External
Regulator
100 gal. (min)
Propane/LP
Supply Tank
Vent Pointing
Down
Figure 41 -
External Regulator with Vent Pointing Down
(Propane/LP Only)
FP1977
When using copper or flex connectors use only fittings
approved for gas connections. The gas control inlet is
3/8" NPT.

       





     




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 


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