Finalizing The Installation; Pressure Testing - kozy heat CSK-25 Installation And Operation Manual

11.0

FINALIZING THE INSTALLATION

11.1

Pressure Testing

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 1/2 psi (3.5 kPa). The appliance must be isolated from the gas supply piping system by closing
its equipment shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi
(3.5 kPa).
Pressure check taps for manifold (outgoing) and inlet (incoming) pressure have been incorporated into the valve. The pressure tap
marked OUT measures outgoing pressure and the pressure tap marked IN measures incoming pressure. Follow instructions 11.1.1 and
11.1.2 for proper testing procedures. For manifold pressures, refer to Table 11.1, Gas Pressure Information.
11.1.1 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
proper pressure reading.
1. Loosen inlet (IN) pressure tap screw (counter-clockwise).
2. Attach manometer using a 1/4 in. (6 mm) I.D. hose.
3. Light pilot and burner. Check pressure to ensure it is
between the minimum and maximum recommended
pressure settings.
4. Turn off burner and pilot.
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 READING CAN CAUSE DELAYED IGNITION.
11.1.2 Manifold Pressure Test
1. Light pilot.
2. Loosen manifold (OUT) pressure tap screw (counter-
clockwise).
3. Attach manometer to pressure tap using a 1/4-in I.D. hose.
4. Light burner. Check manometer reading.
5. Turn burner and pilot off.
Outlet (Manifold) Pressure Screw
Fuel Minimum Inlet Gas Pressure
Natural Gas
(7" WC [1.74 kPa] recommended)
LP Gas 12" WC (2.99 kPa) (recommended)
Figure 11.1, Pressure Test Locations
Inlet Pressure Screw
Table 11.1, Gas Pressure Information
5" WC (1.25 kPa)
NOTE
IMPORTANT
5. Disconnect hose and tighten inlet (IN) pressure tap screw
(clockwise). Screw should be snug. Do not over tighten.
6. Relight pilot and burner. Then reattach manometer to the
inlet pressure tap to verify the tap is completely sealed.
Manometer should read no pressure.
NOTE
CAUTION
6. Disconnect manometer hose and tighten manifold (OUT)
pressure tap screw (clockwise). Screw should be snug. Do
not over tighten.
7. Attach the manometer to the manifold pressure tap to verify
it is completely sealed. The manometer should read no
pressure when pilot and burner are on.
Maximum Inlet Gas Pressure
10.5" WC (2.62 kPa)
13" WC (3.24 kPa)
29
Manifold Pressure (High) Manifold Pressure (Low)
3.8" WC (.95 kPa)
11" WC (2.74 kPa)
1.1" WC (.27 kPa)
2.9" WC (.72 kPa)