Owner`s manual
11
Existing Glass Doors and Wire Screens
Existing glass doors must be permanently removed prior to installing the RF24 insert. Existing wire fi re screens 
may remain in place or new ones may be added. The RF24 has been tested and approved to operate with wire 
fi re screens in the closed or open positions.
Combustible Mantels
Combustible mantel clearances must conform to those required for the original solid-fuel fi replace into which the 
RF24 is being installed.
Paint Existing Refractory Liners
It may be desirable, for visual reasons, to paint the existing refractory liners in black to blend in with the RF24 
insert once installed.
Attach Warning Label to Existing Fireplace (label supplied loose with RF24 heater)
Attach the “This fi replace has been converted...” label to the existing fi replace using screws or other mechanical 
means and store any removed parts in back of the existing fi replace for future use.
Existing Fireplace Preparation
Supply Gas
It’s preferable to rough-in the gas line at this point before proceeding with the fi rebox installation.
The gas supply inlet connection is a 3/8” NPT female connector. For detailed location of this connector, see drawing 
in section Dimensions. If a circulating fan or isolating valve is to be installed, adjust the routing of the gas line to 
suit.
Use only new black iron or steel pipes or copper tubing if acceptable—check local codes. Note that in USA, copper 
tubing must be internally tinned for protection against sulfur compounds.
Unions in gas lines should be of ground joint type.
The gas supply line must be sized and installed to provide a supply of gas suffi cient to meet the maximum demand 
of the appliance without undue loss of pressure.
Sealant used must be resistant to the action of all gas constituents including LP gas. Sealant should be applied 
lightly to male threads to ensure excess sealant does not enter gas lines.
The supply line should include a manual shut-off valve and union to allow the appliance to be disconnected for 
servicing. 
Pressure test the supply line for leaks.
The appliance and its individual shut-off valve must be disconnected from the gas supply piping system during any 
pressure testing of that system at test pressures in excess of ½ psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off valve during 
any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psig (3.5 kPa).
Failure to either disconnect or isolate the appliance during pressure testing may result in regulator or valve damage. 
Consult your dealer in this case.
The minimum supply pressure is given in the section Specifi cations of 
this manual.
All piping and connections must be tested for leaks after installation or 
servicing. All leaks must be corrected immediately.
When testing for leaks:
  Make sure that the appliance is turned off.
  Open the manual shut-off valve.
  Test for leaks by applying a liquid detergent or soap solution to all 
joints. Bubbles forming indicate a gas leak. Never use an open 
fl ame to check for leaks.
  Correct any leak detected immediately.
The pressure test tapping locations are shown in fi gure above. A built-
in non-adjustable regulator controls the burner manifold pressure. The 
correct pressure range is shown in the table in section Specifi cations of 
this manual. The pressure check should be made with the burner alight 
and at its highest setting. See lighting instruction section for full operating details.
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Inlet Pipe
Manifold Pressure
Test Tap
Supply Pressure
Test Tap
Loosen screw to check
(tighten afterwards)
Pressure Test Tappings










