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Page 20
SECTION 2
LOCATING THE UNIT
2.A General Information
The 'Indoor' unit is designed and CSA-certified
for indoor installations only.
The 'Outdoor' unit is designed and CSA-certified for
outdoor installations only. Outdoor installation of
this unit is not permitted in Canada.
If installing in a location that may experience freezing
temperatures, precautions must be taken to prevent water
in the heat exchanger and condensate inside and outside
of the boiler from freezing. Damage due to freezing water
or condensate is not covered by the warranty.
The appliance should be located to provide clearances on
all sides for maintenance and inspection. It should not be
located in an area where leakage of any connections will
result in damage to the area adjacent to the appliance or
to lower floors of the structure. When such a location is
not available, it is recommended that a suitable drain pan,
adequately drained, be installed under the appliance.
Always install the unit on a firm, level surface.
The unit is design certified by CSA-International for
installation on combustible flooring; in basements; in
closets, utility rooms or alcoves. These units must never be
installed on carpeting. The location for the unit should be
chosen with regard to the vent pipe lengths and external
plumbing and on a level surface.
The Indoor units shall be installed such that the gas ignition
system components are protected from water (dripping,
spraying, rain, etc.) during operation and service (circulator
replacement, control replacement, etc.). When vented
vertically, the unit must be located as close as practical to
the vertical section of the vent. If the vent terminal and/or
combustion air terminal terminate through a wall, and there
is potential for snow accumulation in the local area, both
terminals should be installed at an appropriate level above
grade or the maximum expected snow line.
The Outdoor units must be installed at least 10 ft (the vent
pipe) from any door or window. The exhaust vent shall
not be under any overhang or roof. Use only the vent
components included with the boiler.
The dimensions and requirements that are shown in Table
3 should be met when choosing the locations for the
appliance.
2.B Locating Appliance for Correct Vent
Distance from Outside Wall or Roof
Termination
The forced draft combustion air blower in the appliance
has sufficient power to vent properly when the
guidelines in Table 4 are followed.
For concentric vent terminal kit (optional), follow
installation instructions included with the kit.
UNIT SURFACE
Left Side
Right Side
Top (for flue)
Back
Closet, Front
Front
Vent
Certified by CSA for zero clearance to combustible materials on all sides.
*
from filter box face. See "Table 2. Dimension Drawing, OUTDOOR
Sizes 150-850" on page 16
Table 3.
Suggested Service Clearances
B
W
RADFORD
HITE
INDOOR
OUTDOOR
INCHES
INCHES CM
CM
1
12
2.5
31
12
31
12
31
24
48
61
122
12 *
6
15
31
1
1
2.5
2.5
24
24
61
61
Per Vent Manufacturer
*
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