Monessen Hearth KHLDV SERIES User Manual

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73D0024 
23
Figure 23 - External Regulator with Vent Pointing 
Down (Propane/LP Only)
Use only 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 fl ow rate 
(BTU/hr). Undue pressure loss will 
occur if the pipe is too small.
CAUTION
FIREPLACE INSTALLATION 
CHECK GAS TYPE
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.
INSTALLING GAS PIPING TO FIREPLACE / BURNER SYSTEM LOCATION
For propane/LP units, never connect fi replace directly to the propane/LP supply. This 
burner system requires an external regulator (not supplied). Install the external regulator 
between the burner system and propane/LP supply. 
CAUTION 
A qualifi ed installer or service person 
must connect appliance to gas supply. 
Follow all local codes. 
W
A
RNING
INSTALLATION ITEMS NEEDED
Before installing fireplace and burner system, make sure you have the items listed below.
•  External regulator (supplied by installer)  •  Piping (check local codes) 
•  Sealant (resistant to propane/LP gas) 
•  Equipment shutoff valve* 
•  Test gauge connection* 
•  Sediment trap (recommended) 
•  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 only, 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 23. Pointing the vent down protects it from freezing rain or sleet. 
External 
Regulator 
100 gallon 
(min) 
Propane/LP 
Supply Tank 
Vent 
Pointing 
Down
When using copper of flex connectors use only fittings 
approved for gas connections. The gas control inlet is 
3
/
8
" NPT.