Monessen Hearth 624DV(ST Indoor Fireplace User Manual


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42D0200
Designer Series Gas Fireplaces
25


Use proper gas type for the fireplace you are installing. If you have conflicting gas type, do not install
fireplace. See dealer where you purchased the fireplace for proper fireplace for your gas type or
conversion kit.


Before installing fireplace and burner system, make sure you have the items listed below.
• External regulator • Piping (check local codes) • Sealant (resistant to propane/LP gas)
(supplied by installer) • Test gauge connection* • Sediment trap (recommended)
• Equipment shutoff valve* • Tee joint • 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 the installer must supply an external regulator. The external regulator 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 35. 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
FP1977
Figure 35 -
External Regulator with Vent Pointing Down
(Propane/LP Only)






      

   

When using copper of flex connectors use only fittings
approved for gas connections. The gas control inlet is
3/8" NPT.
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