7
OVERHANG
12" MINIMUM
90°
VENT
12" SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR INTAKE
AND BOTTOM OF VENT
MAINTAIN 12" MINIMUM
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL OR
GRADE
3"
MAXIMUM
SEPARATION
18"
MAXIMUM
15"
MAXIMUM
LESS THAN 12" CLEARANCE
12"
MINIMUM
12"
MINIMUM
12" OR MORE CLEARANCE
90°
BRACKET
VENT
18"
MAXIMUM
MAINTAIN 12" MINIMUM
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL OR
GRADE
12" SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR INTAKE
AND BOTTOM OF VENT
12" MINIMUM
OVERHANG
3"
MAXIMUM
SEPARATION
12"
MINIMUM
12"
MINIMUM
Advise owner of boiler to keep venting and combustion
6.
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 to operate.
Boiler shall be installed such that automatic gas
7.
ignition system components are protected from water
(dripping, spraying, rain, etc.) during operation and
service (circulator replacement, condensate trap,
control replacement, etc.).
Boiler must be located where ambient temperatures
8.
(minimum possible room temperatures where boiler
is installed assuming boiler is not in operation and
therefore contributes no heat to space) are always
at or above 32°F (0°C) to prevent freezing of liquid
condensate.
Combustion Air/Vent Pipe Requirements
Boiler requires dedicated direct vent system. In direct vent
system, all air for combustion is taken directly from outside
atmosphere, and all fl ue products are discharged to outside
atmosphere.
Combustion air and vent pipe connections must terminate
together in same atmospheric pressure zone, either
through roof or sidewall (roof termination preferred). See
Figures #1 and #2 for required clearances.
If concentric vent termination is being used, refer to
Figure #3 for proper setup.
Less Than 12” Clearance
12” or More Clearance
BEFORE INSTALLING THE BOILER
Figure 1 - Roof Vent / Intake Terminations
Figure 2 - Sidewall Vent/Intake Terminations
Figure 3 - Concentric Vent Terminations
Содержание UB90 125
Страница 30: ...30 SERVICE HINTS DETAILED SEQUENCE OF OPERATION ...
Страница 36: ...36 Troubleshooting Chart 2 TROUBLESHOOTING ...
Страница 39: ...39 Troubleshooting Chart 5 TROUBLESHOOTING ...
Страница 42: ...42 This Page Intentionally Left Blank ...
Страница 44: ...UTICA BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...