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DV425TR DIRECT VENT ROOM HEATER
02/01                                                                                     Page 45                                                                               250-5533
 
Checking Gas Inlet Pressure
 
Step 1.  
 
Turn "ON" all other gas appliances in the household, and;
Step 2.
 
Turn the fireplace burner “ON”.
 
 
If the pressure is not sufficient, ensure: 1) the piping used is large enough, 2) the supply regulator is 
adequately adjusted, and 3) that  the total gas load for the residence does not exceed the amount supplied.
 
The supply regulator (the regulator that attaches directly to the residence inlet or to the propane tank) 
should supply gas at the suggested input pressure listed above.  Contact the local gas supplier if the regulator 
is at an improper pressure.
  
 
Input Pressure 
 
 
 
 
Minimum 
Maximum
Natural Gas   
4.5”W.C. 
7”W.C.
Propane 
 
11”W.C. 
14”W.C.
Gas Line Connection, cont.
INLET PRESSURE TAP
MANIFOLD
PRESSURE TAP
GAS LINE
CONNECTION
VALVE