Lochinvar 402 - 2072 Service Manual page 31

2
Maintenance
Figure 2-4_Measuring manifold gas pressure
MANIFOLD
PRESSURE
MANOMETER
MODEL
402 - 752
992 - 2072
Copper-fin II/IIE Boiler and Water Heater
(continued)
PRESSURE
REGULATOR
ADJUSTMENT
(UNDER CAP
SCREW)
OUTLET
TABLE 2B
Net Manifold Pressure
Regulator Pressure Less
Front Chamber Pressure
Nat. Gas
1.8'' w.c.
1.2'' w.c.
INLET
GAS
VALVE
CONTROL
KNOB
Service Manual
CHAMBER
PRESSURE
TEE
TO BARBED
FITTING
LP
4.6" w.c.
4.6" w.c.
31