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11.0 ADJUSTMENT
11.1 Pressure Testing
NOTE: The appliance and its appliance main gas valve must be
disconnected from the gas supply piping system during any pressure
testing of the system at test pressures in excess of ½ psi (3.5 kPa).
IMPORTANT: Pressure check taps for manifold (outgoing) and inlet
(incoming) pressure have been incorporated into the valve. The
pressure tap marked OUT measures outgoing pressure. The pressure
tap marked IN measures incoming pressure.
11.1.1.1 Inlet Pressure Test
NOTE: Make sure to apply the incoming pressure test with all other gas
appliances on, or at full capacity in the house for a proper pressure
reading. If the inlet pressure reading is too high or too low, contact the
gas company. Only a qualified gas service technician should adjust
incoming gas pressure. A low pressure can cause a delayed ignition.
1.
Loosen the inlet (IN) pressure tap by turning screw
counterclockwise. See (A) in FIGURE 11.1.
2.
Attach manometer using a ¼" (6mm) I.D. hose.
3.
Light pilot.
4.
Turn the gas control knob to ON. Burner should not light. Note
manometer reading.
5.
Press the ON/OFF rocker switch to ON. Check pressure to ensure
it is near maximum inlet pressure.
6.
Press the ON/OFF rocker switch to OFF.
7.
Turn the gas control knob to OFF.
8.
Disconnect hose and tighten the inlet (IN) pressure tap by
(A) INLET PRESSURE TAP
FIGURE 11.1 Pressure Check Taps Locations
60
#CLW-50-MV
R.1 October 2021
turning screw clockwise. Screw should be snug. Do not
over tighten.
9.
Relight pilot and turn the gas control knob to ON. Reattach
manometer to the inlet pressure tap (A) to verify the tap is
completely sealed. Manometer should read no pressure.
11.1.1.2 Manifold Pressure Test
1.
Light pilot.
2.
Loosen manifold (OUT) pressure tap by turning screw
counterclockwise. See (B) in FIGURE 11.1.
3.
Attach manometer to pressure tap using a ¼" (6mm) I.D. hose.
4.
Turn gas control knob to ON.
5.
Press the rocker switch to ON and note manometer reading.
6.
Disconnect manometer hose and tighten the manifold (OUT)
pressure tap by turning screw clockwise. Screw should be snug.
Do not over tighten.
7.
Attach the manometer to the manifold pressure tap (B) to verify
it is completely sealed. The manometer should read no pressure
when the ON/OFF rocker switch is pressed to ON.
Gas Pressure
Inlet Pressure
Tap (A)
Manifold Pressure
Tap (B)
(B) MANIFOLD PRESSURE TAP
Table 11.1, Pressure Requirements
Natural Gas
Propane
5" - 10.5" WC
(1.25 - 2.62 kPa)
1.6" - 3.5" WC
(0.41 - 0.87 kPa)
HUSSONG MFG. CO., INC.
KOZY HEAT FIREPLACES
SECTION 11 ADJUSTMENT
Pressure Testing
11" - 13" WC
(2.74 - 3.24 kPa)
6.4" - 10" WC
(1.59 - 2.48 kPa)
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