11
WARNING
Failure to supply adequate air to the boiler will
result in unsafe boiler operation.
C.
PROVIDE AIR SUPPLY AND VENTILATION
to
accommodate proper combustion.
For commercial and industrial equipment, permanent
facilities for supplying an ample amount of outside air
shall be provided in accordance with the following.
For boiler rooms adjacent to outside walls, and where
combustion air is provided by natural ventilation from
the outside, there shall be a permanent air supply inlet
having a total free area of not less than 1 sq. inch per
4,000 Btu per hr. (35 sq. inch per gallon per hour)
(5.5 cm
2
per kw.) of total input rating of the burner or
burners and in no case less than 35 sq. inch (0.425m
2
).
For boiler rooms not adjacent to outside walls, the
combustion air shall be supplied in a manner acceptable
to the authority having jurisdiction.
1. In the absence of local requirements, the confined
space shall be provided with two permanent
openings, one in or near the top of the room and one
near the bottom. The openings shall communicate
by means of ducts, with the outdoors or to such
spaces (crawl or attic) that communicate with the
outdoors.
a. Where communicating by means of vertical
ducts, each opening shall have a free area of not
less than 1 sq. inch per 4,000 Btuh (35 sq. inch
per gph) (5.5 cm
2
per kw) of total input rating of
all appliances in the enclosure.
b. If horizontal ducts are used, each opening shall
have a free area of not less than 1 sq. inch
per 2,000 Btuh (70 sq. inch per gph.) (11 cm
2
per kw) of total input of all appliances in the
enclosure.
D.
CHIMNEY OR VENT
NOTICE
When a V9A gas fired boiler is connected to
a venting system that is designed so that it
will operate under a negative pressure, the
use of Type C, B, or other manufactured vent
systems designed for negative pressure is
acceptable.
When a V9A oil fired or combination gas/oil
fired boiler is connected to a venting system
that is designed so that it will operate under
a negative pressure, the use of Type C, L or
other manufactured vent systems designed
for negative pressure is acceptable.
Unlined masonry chimneys are not accept-
able. Lined masonry chimneys are acceptable
with the appropriate vent connectors using
materials described above.
Figure 2: Boiler Foundation
Summary of Contents for operating and
Page 2: ...2 ...
Page 8: ...8 Section I General Information Figure 1 Dimensional Information ...
Page 21: ...21 Figure 16 Bare Boiler Assembly ...
Page 25: ...25 Figure 22 V9A Series Jacket Assembly Boiler Models V903A thru V912A ...
Page 31: ...31 Figure 26 V9A Series Minimum Piping Parallel Water Boiler ...
Page 32: ...32 Figure 27 V9A Series Minimum Piping Primary Secondary Water Boiler ...
Page 33: ...33 Figure 28 V9A Series Minimum Piping Details Bypass with Blend Pump Water Boiler ...
Page 34: ...34 Figure 29 V9A Series Minimum Piping Primary Secondary with Bypass Water Boiler ...
Page 37: ...37 Figure 32 Minimum Piping Requirements For Gravity Return V9A Series Steam Boilers ...
Page 42: ...42 Figure 37b DHW Generation with Tankless Coils Storage Tank and Destratification Pump ...
Page 43: ...43 Figure 37c DHW Generation with Indirect Water Heater ...
Page 58: ...58 Figure 40 Bare Boiler Assembly ...
Page 62: ...62 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 63: ...63 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 64: ...64 ...