Install Instructions

Page 7
NEOTHERM Residential Boilers
HIGH EFFICIENCY RESIDENTIAL BOILERS
®
SECTION 2 LOCATING THE UNIT
2.A General Information
This unit is designed for indoor installations only and
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 unit or to lower oors of
the structure.
When such a location is not available, it is recommended
that a suitable drain pan, adequately drained, be installed
under the unit.
The unit is design certied by CSA-International for
installation on combustible ooring; in basements; in
closets, utility rooms or alcoves. These units must never
be installed on carpeting. The location should be chosen
with regard to the vent pipe lengths and external plumbing
and on a level surface. The unit 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 dimensions and requirements that are shown in
Table 2 and Table 3 should be met when choosing the
installation location.
2.B Locating the Unit for Correct Vent
Distance from Outside Wall or
Roof Termination
The forced draft combustion air blower in the unit has
su󰀩cient power to vent properly when the guidelines in
Table 3 are followed.
NOTE: When located on the same wall, this units
combustion air intake terminal must be installed a
minimum of 12” below the exhaust terminal.
For concentric vent terminal kit (optional), follow the
installation instructions included with the kit.
SUGGESTED SERVICE ACCESS CLEARANCE
UNIT SURFACE INCHES CM
Left Side 1 2.5
Right Side 12 31
Top 24 61
Back 6 15
Closet, Front 1 2.5
Alcove, Front 24 61
Vent Per Vent Manufacturer
Certied by CSA for zero clearance to
combustible materials on all sides.
Table 2. - Clearances
INTAKE / EXHAUST
STANDARD MAX EQUIV. OPTIONAL MAX EQUIV.
SIZE VENT FT. M VENT FT. M
80 2” 40 6.1 3” 100 30.5
105 2” 40 6.1 3” 100 30.5
150 3” 100 30.5 n/a — —
210 3” 100 30.5 n/a — —
Combustion Intake and Vent must be the same size.
Installations in the U.S. require exhaust vent pipe that is a combination
of PVC & CPVC complying with ANSI/ASTM D1785 F441 or stainless
steel complying with the stainless steel vent suppliers listed in Section 3.
Installations in Canada require exhaust vent pipe that is certied to
ULC S636.
Intake (air) pipe must be PVC or CPVC that complies with ANSI/ASTM
D1785 F441, ABS that complies with ANSI/ASTM D1527 or galvanized
material.
The installer must comply fully with the manufacturers installation
instructions, including use of minimum exhaust length CPVC, to main-
tain ANSI Z21.13 safety certication.
Closet and alcove installations do not allow the use of PVC under any
circumstances
To calculate max equivalent length, measure the linear feet of the pipe,
and add 5 feet (1.5m) for each 90° elbow used. Add 2 1/2 feet (.76
meters) for each 45 elbow used.
Table 3. - Vent / Air Pipe Sizes