Servicing of the Heli-Fire can be performed from the side of the unit by removing the access panel from the unit.
Caution: The gas line should be installed by a qualified service person in accordance with all building codes. This sec-
tion is intended as a guide for qualified technicians installing this unit. Consult local and/or national building codes before
proceeding.
•
Gas supply line connection is located on the rear of the Heli-Fire. Gas connection accepts a 1/2” NPT fitting.
Correct gas line diameter must be used to assure proper operation and pressure.
•
The Heli-Fire input pressure rating is shown in the table on page
“Heli-Fire gas requirements.” on page 15.
NOTE: A sediment trap, as per national fuel gas code, must be installed in the gas supply line no more than 6 feet from
the gas control valve to minimize the possibility of any loose scale or dirt within the gas supply line from entering the
control valve.
Installers Information
Note: Verify gas pressures with the Heli-Fire lit. Inlet pressure can be tested elsewhere before the Heli-Fire. The
instructions below are intended to test the manifold gas pressure. Manifold gas pressure must be tested with the Heli-
Fire “ON”.
1. Begin with the ON/OFF wall switch turned to the off position. Turn off the gas supply from inside the Heli-Fire. To
do this, the gas assembly needs to be pulled out of the Heli-Fire body before being able to access the gas shut off
valve. The gas assembly is moved in toward the fire box section of the body. An attached flexible hose allows the
gas assembly to remain connected to the gas supply. Refer to instructions in Removing the Burner Control / Valve
assembly on page 16.
2. Locate the inlet and manifold test points on the Gas valve (Figure 13). After locating manifold test port, loosen and
remove the screw within the port using a 3/16 Allen wrench.
3. Attach a pressure gauge to the test port using an extension test fitting. Attach a flexible host to the barbed end of the
fitting. Attach the other end of the flexible hose to the gas pressure gauge.
4. Since the glass door has had to be removed for this test, the vacuum switch will need to be bypassed. Remove the
two purple wires from the vacuum switch.
5. Turn the Heli-Fire gas valve to the ON position. Then, turn on the Heli-Fire at the wall switch. Then, connect the two
purple wires to each other thereby by-passing the vacuum switch, and wait while the pre-purge procedure finishes
(about 10 seconds). This will be followed by ignition and lighting of the Heli-fire. At this time, the manifold pressure
can be read from the pressure gauge display.
6. After testing is complete, turn off the gas supply, turn off the Heli-Fire at the wall switch, and remove the pressure
gauges. Re-tighten the screws in the test ports using Thread Sealant. Re-attach the two purple wires to the vacuum
switch.
Gas Pressure Testing Procedure
Gas Connection
Gas Supply
GAS
CONNECTION
GAS ON/OFF
VALVE
INLET
TEST
PORT
MANIFOLD
TEST PORT
GAS
CONNECTION
Figure 12: Gas on-off valve.
Figure 13: Gas valve assy.
14
TCHF.22BODYA_ 211215-32
TCHF.22STBODYA
5055.64-A
