Checking The Gas Connections; Gas Pressure Check - Lennox Hearth Products Radium-NG Installation And Operation Manual

14.0 CHECKING THE GAS CONNECTIONS

WARNING
Never use an open flame to check for leaks.
Turn on gas supply and test for gas leaks using a gas leak test solution
(also referred to as bubble leak solution).
NOTE: Using a soapy water solution (50% dish soap, 50% water) is
an effective leak test solution, but it is not recommended, because the
soap residue that is left on the pipes/fittings can result in corrosion
over time.
A. Light the appliance (refer to the lighting instructions label in the control
compartment or on Page 13).
B. Brush all joints and connections with the gas leak test solution to
check for leaks. If bubbles are formed, or gas odor is detected, turn
the gas control knob (off/pilot/on) to the "OFF" position. Either tighten
or refasten the leaking connection, then retest as described above.
C. When the gas lines are tested and leak free, be sure to rinse off the
leak testing solution.
D. Observe the individual tongues of flame on the burner. Make sure all
ports are open and producing flame evenly across the burner. If any
ports are blocked, or partially blocked, clean out the ports.

15.0 GAS PRESSURE CHECK

The heater regulator controls the burner pressure which should be
checked at the pressure test points located on the control valve itself
(shown in Figure 5) for burner (manifold) and regulator (inlet) setting
pressures.
The valve is found on the center of the appliance behind the valve
cover. Remove the cover plate by unscrewing the four retaining screws.
Release the test point screws and ensure operating pressures are as
specified in Table 1 on Page 3 of these instructions. The pressure
should be checked with the gas heater burning and the control set to
high flame.
The pressure regulator on manual models is preset and locked to avoid
tampering. If the pressure is not as specified in Table 1 on Page 3,
replace the burner assembly (see Page 15 for ordering information).
Replace the test point screws after pressure measurement ensuring no
gas leaks. All instructions must be left in the possession of the user for
safekeeping.
Figure 5 - Manifold and Inlet Pressure Taps
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
Burner (Manifold) Pressure
Regulator (Inlet)
Pressure Setting
9