Monessen Hearth CFX32 User Manual

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CFX Vent Free Fireplace System
20301726
CONNECT THE GAS
FP1977
external regulator
Figure 13 - 
External Regulator with Vent Pointing Down 
(Propane/LP Only)
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
INSTALLATION ITEMS NEEDED
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) 
  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 con-
nection. 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 13. 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.
W
ARNING
A qualified installer or service person must 
connect appliance to gas supply. Follow 
all local codes.
CAUTION
For  propane/LP  units,  never  connect 
fireplace 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.
FP1977
CAUTION
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  flow  rate  (BTU/hr). 
Undue pressure loss will occur if the pipe 
is too small.