Combustion Air - Dunkirk Q95M-200 Installation, Operation & Maintanance Manual

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The clearances shown in Table 3 indicate required clearances
per CSAlisting. A minimum 1"clearance must be maintained
between combustible construction and each of the right, top
and back surfaces of the boiler. Allow at least 24" at the front
and left side and 8"at the top for servicing.No combustible
clearances are required to venting or combustion air intake
piping.
TABLE 3: BOILER CLEARANCES*
Top 1" 8" 8"
Left Side 1" 24" 24"
RightSi& 1"
Base 1"
Front 0 24" 24"
Back 6"
Intake/VentPiping 0
Near BoilerHot
1 "
Water Piping
* All distances measured from the cabinet of the boiler.
5,
Equipment shall be installed in a location which facilitates the
operation of venting and combustion air intake piping systems
as described in this manual.
6. Advise owner of boiler to keep venting and combustion air
intake passages free of obstructions. Both the venting and com-
bustion air intake piping systems connected to the outdoors
must permit flow through the piping systems without restric-
tions for the boiler to operate.
7. The boiler shall be installed such that the automatic gas ignition
system components are protected from water (dripping, spray-
ing, rain, etc.) during operation and service (circulator replace-
ment, control replacement, etc.).
8. The boiler must be located where ambient room temperatures
(minimum possible temperatures where boiler is installed as-
suming boiler is not in operation and therefore contributes no
heat to the space) are always at or above 32°F to prevent freez-
ing of liquid condensate.
Combustion Air and Vent Pipe Requirements
This boiler requires a dedicated direct vent system. In a direct vent
system, all air for combustion is taken directly from outside atmo-
sphere, and all flue products are discharged to outside atmosphere.
Combustion air and vent pipe connections must terminate together
in the same atmospheric pressure zone, either through the roof or
sidewall (roof termination preferred). See Figures 1 and 2 for re-
quired clearances. If necessary, use of screening no smaller than 1/2"
hardware cloth is acceptable.
Figure 1 - Roof Vent/Intake Terminations
3" MAX.]
8" MAX.
12" MIN ABOVE
HIGHEST ANTICIPATED
SNOW LEVEL
.COMBUSTION AIR
Figure 2 - Sidewall Vent/Intake Terminations
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OVER_
12" SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR INTAKE
D BOTTOM OF VENT
MAINTAIN 12" MINIMUM
ABOVE HIGHEST
_ANTICIPATED SNOW LEVEL OR
GRADE
LESS THAN 12" CLEARANCE ABOVE GRADE
!IMUM
BETWEEN BOTTOM OF
COMBUSTION AIR INTAKE
BOTTOM OF VE_T
_J
"-"-- MAINTAIN 12" MINIMUM
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL OR
GRADE
12" OR MORE CLEARANCE ABOVE GRADE