F Unpacking; G Locating The Unit; H Clearances - Bradford White OmniTech BONH1250 Installation And Operation Instructions Manual

Page 14
1.F Unpacking
This unit is shipped in a single crate. Carefully
disassemble the crate and inspect the unit for any
damage during shipping. Included in the crate and yet
outside of the unit is the 'Installation Kit' box.
Inspect the contents of the the Installation Kit box, making
sure that all parts are included and not damaged.
1. Installation Instructions for Sensors (3)
2. Box containing Outdoor Sensor
3. Box containing System Sensor
4. Tank Sensor
5. Spring Clip (used to hold tank sensor in sensor well)
6. Nylon Bushing
7. Cable Tie
NOTE: A condensate neutralizer is NOT included.

1.G Locating the Unit

This unit may be installed indoors or outdoors. If
installing outdoors 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. For units
installed outdoors, the minimum outdoor operating
temperature is 5ºF (-15ºC).Damage due to freezing water
or condensate is not covered by the warranty.
Choose a location for the unit which allows clearances on
all sides for maintenance and inspection. See Table 1.
Always install the unit on a firm, level surface. It is
recommended that the unit is installed on a raised 4" pad
so that there is elevation for a condensate neutralizer kit
(not included with unit).

1.H Clearances

Front
Model
inches
1250-3000 closet*
*With required openings
Front
Model
inches
1250-1500 24
1750-3000 24
Table 1. Clearances
Certified Clearances to Combustibles
Back
inches
cm cm
0
- 0
Suggested Service Clearances
Back
cm inches cm
24
61 61
24
61 61
The unit 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 floors of the structure.
When this type of location is not available, install a
suitable drain pan, adequately drained, under the unit.
This unit is design-certified by CSA-International for
installation on combustible flooring; in basements; in
utility rooms, alcoves, or closets. Boilers must never be
installed on carpeting. The location for the unit should
be chosen with regard to the vent pipe lengths and
external plumbing.
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 1 should be met when choosing the location for the
unit.
Ensure the location takes into account the maximum
allowable vent length shown in SECTION 2 of this
manual.
NOTE : 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.).
Left
inches inches
cm
0 0
0
Left
inches cm inches
8 8
20
8 8
20
Right Top
inches
cm
0
0
Right Top
cm inches
18
20
17
20
cm
0
cm
46
43