Checking Gas Input Rate To Boiler; Replacement Parts List - UTICA BOILERS USC Installation Manual And Operating Instructions

CHECK GAS INPUT RA CHECK GAS INPUT RATE CHECK GAS INPUT RA
CHECK GAS INPUT RA CHECK GAS INPUT RA
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
counterclockwise
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.
USC SERIES REPLA USC SERIES REPLA
USC SERIES REPLA USC SERIES REPLA USC SERIES REPLACEMENT P
ITEM NO
1 PBO1401
PB01402
2 32711102
3 HW-024.01
4 MS-003.05
to decrease pressure, see figure 10 on page 11.
P/N
PILOT Q3450B 1039 HW NAT
PILOT Q3450B 1112 LP USC
BASE - PILOT BRACKET
SCREW #10 32X3/16
PILOT TUBE 1/4"X24-1/4" ALUMINUM
TE TE T T T T T O BOILER TE
TE
CEMENT P CEMENT P
CEMENT P CEMENT PAR
DESCRIPTION
(FOR NATURAL GAS ONLY)
(FOR PROPANE GAS ONLY)
FIGURE 19
PAGE 17
O BOILER O BOILER O BOILER
O BOILER
AR AR TS - PIL TS - PILO O O O O T T T T T TS - PIL
AR ARTS - PIL TS - PIL
or
QTY.
1
1
1
1