44 ADJUSTMENT
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#SP-34 LE & MV R.5 January 2020
11.1 Gas 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 Electronic Gas Valve Pressure Testing
11.1.1.1 Inlet Pressure Test
NOTE: Make sure to apply these incoming pressure test with all other
gas appliances on, or at full capacity in the house for proper pressure
reading.
IMPORTANT: 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.
1. Loosen the inlet (IN) pressure tap by turning screw counter-
clockwise. See (A) in Figure 11.1.
2. Attach manometer using a ¼” (6mm) I.D. hose.
3. Set IPI/CPI rocker switch to CPI (ON).
4. Light pilot. Check manometer reading.
5. Press the main ON/OFF rocker switch to ON. Burner should
light. Check pressure to ensure it is between the minimum and
maximum recommended pressure settings.
6. Set IPI/CPI rocker switch to IPI (OFF). Press the main ON/OFF
rocker switch to OFF. Pilot and burner should turn off.
7. Disconnect hose and tighten the inlet (IN) pressure tap by
turning screw clockwise. Screw should be snug. Do not over
tighten.
8. Relight pilot and burner. Then 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 counter-
clockwise. See (B) in Figure 11.1.
3. Attach manometer to pressure tap using a ¼” (6mm) I.D. hose.
4. Set IPI/CPI rocker switch to CPI (ON).
5. Press the main ON/OFF rocker switch to ON. Burner should light.
Check manometer reading.
6. Set IPI/CPI rocker switch to IPI (OFF). Press the main ON/OFF
rocker switch to OFF. Pilot and burner should turn off.
7. Disconnect manometer hose and tighten the manifold (OUT)
pressure tap by turning screw clockwise. Screw should be snug.
Do not over tighten.
8. Attach the manometer to the manifold pressure tap (B) to verify
it is completely sealed. The manometer should read no pressure
when pilot and burner are on.
Table 11.1, Pressure Requirements - SP-34-LE (Electronic)
Gas Pressure
Natural Gas
Propane
Inlet Pressure
Tap (A)
5” - 10.5” WC
(1.25 - 2.62 kPa)
12” - 13” WC
(2.99 - 3.24 kPa)
Manifold Pressure
Tap (B)
1.6” - 3.5” WC
(0.41 - 0.87 kPa)
6.4” - 10” WC
(1.59 - 2.48 kPa)
11.0 ADJUSTMENT
Figure 11.1, Pressure Check Taps
(B) MANIFOLD
PRESSURE TAP
(A) INLET PRESSURE
TAP
