CHECK GAS INPUT RACHECK GAS INPUT RA
CHECK GAS INPUT RACHECK GAS INPUT RA
CHECK GAS INPUT RA
TE TE
TE TE
TE
TT
TT
T
O BOILERO BOILER
O BOILERO BOILER
O BOILER
1. Maximum permissible gas supply pressure must not be higher and minimum supply
pressure must not be lower than what is specified on the rating plate.
2. To check for proper flow of natural gas to boiler using the gas meter, proceed as follows:
A. Turn off the gas supply to all other appliances, except the boiler.
B. With the boiler operating, determine the flow of gas through the meter for two minutes
and multiply by 30 to get the hourly rate.
C. Divide the input rate shown on the rating plate by the heating value of the gas as
obtained from the local gas company. This will determine the number of cubic feet
of gas required per hour.
D. If minor adjustment is necessary, install a manometer on the outlet side of the gas
valve. Adjust the pressure regulator on the combination gas control. Increase or
decrease manifold pressure to obtain gas input required as described on the rating
plate. To increase, turn the regulator adjusting screw clockwise or
counterclockwise to decrease pressure, see figure 10 on page 11.
After adjustment has been completed, turn the boiler off and remove the manometer
and the shut-off cock.
E. Relight all the other appliances turned off in step A above. Be sure all pilot burners
are operating.
PAGE 17
ITEM NO P/N DESCRIPTION QTY.
1 PBO1401 PILOT Q3450B 1039 HW NAT 1
(FOR NATURAL GAS ONLY)
PB01402 PILOT Q3450B 1112 LP USC
(FOR PROPANE GAS ONLY)
2 32711102 BASE - PILOT BRACKET 1
3 HW-024.01 SCREW #10 32X3/16 1
4 MS-003.05 PILOT TUBE 1/4"X24-1/4" ALUMINUM 1
FIGURE 19
USC SERIES REPLAUSC SERIES REPLA
USC SERIES REPLAUSC SERIES REPLA
USC SERIES REPLA
CEMENT PCEMENT P
CEMENT PCEMENT P
CEMENT P
ARAR
ARAR
AR
TS - PILTS - PIL
TS - PILTS - PIL
TS - PIL
OO
OO
O
TT
TT
T
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