Sidewall Venting, Non-Direct Vent; Vent Termination Location And Clearance; Non-Direct Vent Vertical Venting; Direct Vent Installation - Slant/Fin B-120A Installation And Operating Instructions Manual

Bobcat Models B-120A and B-200A
8. The horizontal vent and air intake pipes must be
supported with pipe straps, at intervals no greater than
1524mm (5 feet), when Certified PVC or CPVC Venting
Pipe is used. This support spacing applies also to
stainless steel vent pipe, unless the manufacturer's
instructions permit otherwise. The vertical vent and air
intake pipes also must be supported, wherever the
building construction provides allowance for it, such as
ceiling or roof passage openings where a firestop and
support or braces can be affixed.
9. Minimum clearances of vent pipes from combustible
constructions must be maintained (see Page 4). No
clearance is required between the vent and air intake
pipes of this boiler.
10. Common venting with other appliances or another
Bobcat boiler is not allowed.
11. DO NOT install a vent damper or similar devices in vent
system or on the boiler.
12. DO NOT insulate venting system.
VENTING INSTALLATION
Only the approved Certified PVC or CPVC Venting System
and stainless steel materials listed on page 7 may be used for
the venting system installation. If stainless steel vent systems
are used, follow the manufacturer's instructions, in
conjunction with these instructions.
I. Non-Direct Vent Installation
The air for combustion is taken from the ambient air
surrounding the boiler; therefore, ample supply of air is
required for combustion and ventilation (see page 7.)
DO NOT use this installation method if the surrounding of the
boiler is contaminated. See page 5 for the list of harmful
contaminants and their sources, to avoid.
A. SIDEWALL VENTING - NON-DIRECT VENT
Figures 7 and 8 show typical horizontal sidewall venting. For
combustible wall passage of vent piping, a UL listed thimble
or flashing and sealing boot must be used, provided the wall
thickness is from 76mm (3") minimum up to 305mm (12")
maximum. The vent piping must terminate with a screened
tee or elbow termina tion facing down.
CAUTION: Flue gasses exiting from the vent terminal will
condense. Building materials in the area of the vent terminal
should be protected from discoloration and degradation.
VENT TERMINATION LOCATION AND CLEARANCES
1. The venting system shall terminate at least 914mm (3
feet) above any forced air inlet located within 3048mm (10
feet).
2. The venting system shall terminate at least 914mm (3
feet) below, 914mm (3 feet) hori,zontally from, or 914mm
(3 feet) above any door, window or gravity air inlet into
any building. The bottom of the vent terminal or air intake
terminal shall be at least 305mm (12 inches) above grade
or the normal snow level whichever is greater.
3. Through the wall vents shall not terminate over public
walkways or over areas where condensate or vapor could
create a nuisance or hazard or could be detrlmental to the
operation of regulators, relief valves or other equipment.
Minimum clearance of 914mm (3 feet) horizontal distance
is maintained, from electrtc meters, gas meters,
regulators and relief equipment.
4. Vent termination must not be located in any confined
space (i.e. window wells, alcoves, narrow alleys) or under
any overhang or deck. Vent termination should not allow
flue gas discharge towards neighbor's windows or where
personal injury or property damages can occur.
B. NON-DIRECT VENT - VERTICAL VENTING
Figure 9 shows typical venting through the roof. The vent
pipe must pass through the ceiling, floor and the roof
vertically through a 152mm (6") minimum diameter cutout. A
fire stop is required for each ceiling and floor penetration. For
roof passage, an appropriate UL listed roof flashing must be
used.
An existing chimney (see Figure 10) may be used as a chase
for vertical venting. Other appliances CANNOT be vented into
the same chimney or vent pipe with in the chimney.
The vertical vent piping must terminate with a screened tee,
combination of 45° elbow and a 90° screened elbow
termination or a rain cap termination.
II. Direct Vent Installation
Air intake piping from outside to the boiler air intake adapter
provides the air for combustion. The boiler surrounding may
be contaminated (See page 5). Piping the air intake to the
outside can prevent contaminants from the boiler
surrounding from entering the combustion air supply.
A. SIDEWALL DIRECT VENTING
Figures 11 and 12 show typical sidewall direct venting, using
a Slant/Fin vent/air intake termination. There are 2 different
models of vent/air intake termination available. One is
designed specifically for Certified PVC or CPVC Venting, and
the other is designed specifically for stainless steel venting
systems. Only these 2 models of vent/air intake termination
are approved for this method of installation. Refer to the
Slant/Fin Bobcat B-120A and B-200A boilers Parts List
(publication number B-10PL) for the appropriate model for
the vent material to be used.
CAUTION: Flue gasses existing from the vent terminal will
condense. Building materials in the area of the terminal
should be protected from discoloration and degradation, in
addition to the requirements of the vent termination location
and clearances stated in this manual.
9