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Table 4 -
Required Clearances
Unit
Combustible
Clearance
Accessibility,
Cleaning, and
Servicing
Top 1” (26mm) 8” (204mm)
Left Side 1 “ (26mm) 24” (610mm)
Right Side 11” (280mm) -
Base 1” (26mm) -
Front 1” (26mm) 24” (610mm)
Back 1” (26mm) -
Intake/Vent Piping 0 (0) -
Near Boiler Hot
Water Piping
1” (26mm) -
All distances measured from the cabinet of the boiler.
Locating The Boiler
1.
Place crated boiler as close to selected location as
possible and un-crate boiler. Boiler may be moved into
position with appliance dolly or 2 wheel hand truck.
Insert dolly or hand truck under left hand side of
boiler. It is possible to slide boiler for short distance on
smooth fl oor or surface.
1.
Select level location central to piping systems served
and as close to vent and air intake terminals as
possible.
2.
Accessibility clearances, if more stringent (i.e. larger
clearances) than required fi re protection clearances,
must be used for boiler installation. Accessibility
clearances may be achieved with the use of removable
walls or partitions.
3.
Boiler is approved for installation in closets and on
combustible fl oors. This boiler shall NOT be installed on
carpeting.
4.
Clearances shown in Table 4
indicate required
clearances. Maintain minimum 1” clearance between
combustible construction and each of left, top and
back surfaces of the boiler. Minimum 11” clearance
is required on right side, to allow room for induced
draft blower. Maintain 18” clearance at side where
passage is required to access another side for cleaning
or servicing, inspection or replacement of parts. Allow
24” at front and left side and 8” at top for servicing. No
clearances are required to venting or combustion air
intake piping.
5.
Install equipment in location which facilitates operation
of venting and combustion air intake piping systems as
described in this manual.
6.
Advise owner to keep venting and combustion air
intake passages free of obstructions. Both venting
and combustion air intake piping systems connected
to outdoors must permit fl ow through piping systems
without restrictions for boiler operation.
7.
Install boiler such that the automatic gas ignition
system components are protected from water
(dripping, spraying, rain, etc.) during operation and
service (circulator replacement, condensate trap,
control replacement, etc.).
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 atmosphere, and all fl ue products are
discharged to outside atmosphere.
Terminate combustion air and vent pipe connections in
same atmospheric pressure zone, through roof or sidewall
(roof termination preferred). See Figure 12 thru Figure 14 ,
pages 24 and 25 for required clearances.
• Keep boiler area clean of debris and free of fl ammable
and combustible materials, vapors and liquids.
• When vent pipe is exposed to temperatures below
freezing, such as when it passes through an unheated
space or when chimney is used as a raceway, vent pipe
must be insulated with 1/2” Armafl ex or equivalent.
In extreme cold climate areas, use ¾” Armafl ex or
equivalent.
WARNING
Solvent cements are combustible. Keep away from
heat, sparks, and open fl ame. Use only in well ven-
tilated areas. Avoid breathing in vapor or allowing
contact with skin or eyes. Failure these instructions
could result in fi re, personal injury, or death.
!
• Combustion air must be clean outdoor air. Combustion
air must not be taken from inside structure because
that air frequently is contaminated by halogens, which
include fl uorides, chlorides, phosphates, bromides and
iodides. These elements are found in aerosols, deter-
gents, bleaches, cleaning solvents, salts, air fresheners,
paints, adhesives and other household products.
• Locate combustion air inlet as far away as possible
from swimming pool and swimming pool pump house.
• All combustion air and vent pipes must be airtight and
watertight. Combustion air and vent piping must also
terminate as shown in
“Combustion Air and Vent
Pipe”
section.
• Vent connections serving appliances vented by
natural draft shall not be connected into any portion
of mechanical draft systems operating under positive
pressure.
BOILER INSTALLATION