Omega II
®
Installation, Operation & Maintenance
Page 14
Combustion Research Corporation
GAS PRESSURE AT MANIFOLD
Natural Gas: 3.5" W.C.
LP Gas: 10.0" W.C.
1/2" NPT Gas Connector Size
ELECTRICAL RATING
115VAC, 60 Hz., 1.8 Amp
GAS INLET PRESSURE
Natural Gas: 6.0" W.C. Minimum 14.0"W.C. Maximum
LP Gas: 11.0" W.C. Minimum 14.0" W.C. Maximum
ALTITUDE
Systems 0922 through 0910 (40k - 100k Btu/hr input)
0 - 4,500 Ft.
(0 - 1370 m)
No de-rating required.
Systems 0926 through 0945 (105k - 200k Btu/hr input)
0 - 2,000 Ft.
(0 - 610 m)
No de-rating required
2,000 - 4,500 Ft.
(610 - 1,370m)
De-rating required.
NOTE: Gas pressures must be measured with a water or red oil manometer - NOT A DIAL GAUGE. All measurements must
be made when this heater and all other gas burning equipment connected to the gas supply system are operating at maximum
capacity. It should be assured by test that the gas pressure at the burner inlet is not greater than the figures given above.
Maximum inlet pressure is 1/2 lb. or 14.0" W.C.
The installer must provide a 1/8" N.P.T. (
3.2mm
) plugged tapping, accessible for test gauge connection, immediately upstream
of the gas supply.
1/8" NPT (3.2mm)
Manifold Pressure Tap
Manifold Pressure
Adjustment
(Under Cap)
Inlet Pressure Tap
1/8" NPT (3.2mm)
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
7
6
5
4
3
2
1
7
6
5
4
3
2
1
3.5” W.C.
Natural Gas
10.0” W.C.
Propane Gas
HONEYWELL GAS VALVE
PN 5285.06 (NG) & 5285.06LP (LP)
Summary of Contents for Omega II
Page 40: ...Omega II Installation Operation Maintenance Page 36 Combustion Research Corporation...
Page 48: ......
Page 49: ......
