Operating instructions

It is cheaper to rebuild or reline a poor chimney than to pay excessive fuel bills. If chimney is an old masonry chimney, a new steel liner or a new
prefabricated chimney may be the best solution. Refer to the manufacturer’s instructions for correct sizing information.
Table 6 shows recommended minimum chimney sizes based on Table 3 and Fig. 6 of the I=B=R Testing and Rating Standard for Heating Boilers,
Sixth Edition, June 1989.
For additional chimney design and sizing information, consult the ASHRAE 2000 HVAC System and Applications Handbook, Chapter 30,
Chimney, Gas Vent and Fireplace Systems; or the National Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances,
ANSI/NFPA 211.
Table 4—Boiler Water Volumes
NUMBER OF BOILER SECTIONS TOTAL VOLUME (GALLONS)
3 9.6
4 11.6
5 13.7
Table 5—Piping Water Volumes
PIPE SIZE COPPER PIPE FACTOR STEEL PIPE FACTOR
1/2-in. 82.5 63.5
3/4-in. 40.0 36.0
1-in. 23.3 22.2
1-1/4-in. 15.3 12.8
1-1/2-in. 10.8 9.5
2-in. 6.2 5.8
—Divide total length of piping in feet by appropriate factor in table to determine volume in gallons.
Fig. 9—Circulator on Supply Pumping Away
A01032
FILTROL WITH
AIR PURGER
AUTOMATIC
FILL VALVE
SUPPLY TO
SYSTEM
MAIN SHUTOFF
VALVE
DRAIN VALVE
FOR POWER
PURGING
SHUTOFF VALVE
BOILER SERVICE
FILL LINE WITH SHUT OFF VALVE
RETURN FROM SYSTEM
BOILER
DRAIN
VALVE
R
AQUA STAT
S
Fig. 10—Bypass Piping Circulator on Supply
A01034
FILTROL WITH
AIR PURGER
AUTOMATIC
FILL VALVE
SUPPLY TO
SYSTEM
DRAIN VALVE
FOR POWER
PURGING
SHUTOFF VALVE
BOILER SERVICE
FILL LINE WITH SHUT OFF VALVE
RETURN FROM SYSTEM
BOILER
DRAIN
VALVE
ISOLATION VALVES
THROTTLING VALVE
THROTTLING VALVE
CIRCULATOR
PUMP
AQUA STAT
S
R
MAIN SHUTOFF
VALVE
ADJUST THE TWO THROTTLINE VALVES TO
MAINTAIN AT LEAST 120
O
F IN THE
BOILER RETURN. THE THROTTLING VALVES
ARE USED FOR BYPASS PIPING, IF REQUIRED.
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