Installation Of The Exhaust And Air Intake System - Bosch ZBR16-3A Installation And Service Instructions Manual

44 | Installation
5.8.1

Installation of the exhaust and air intake system

NOTICE:
B Vent connectors serving appliances vented
by natural draft shall not be connected to
any portion of mechanical draft systems
operating under positive pressure.
NOTICE: Burner damage!
B Avoid drawing in combustion air
excessively loaded with dust or airborne
particles.
DANGER:
B Ensure that the flue pipes and seals are not
damaged.
B Use only sealing compounds (primer and
glue) approved with the vent material.
B Never install a barometric nor a thermally
controlled vent damper with this boiler.
B Connect only one boiler to each flue system
or chimney flue.
B Do not route the flue system piping through
or inside another duct that is used for
exhausting air or other flue gases.
B The condensate trap must be primed at all
times. Failure to do so may allow
combustion gases to escape into boiler
room.
Consult local and state codes pertaining to
special building code and fire department
requirements. Adhere to national code
requirements.
Observe the listed maximum lengths of vent
system, which are boiler model dependent
( chapter 5.8.3).
Optional vent kits are:
• Concentric termination for horizontal/vertical
(Part-#196006)
• Stainless steel parallel wall terminal
(Part-#46546901)
6 720 643 068 (2011/06)
Direct vent installations (sealed combustion)
For direct vent applications all applicable items below
must be met.
1
X
Fig. 25 Vent and combustion air pipe position of a sealed
combustion system
1 Intake
2 Exhaust
X At least 1 foot (305 mm)
The termination shall terminate at least 1 foot (305 mm)
below, 1 foot (305 mm) horizontally from or 1 foot
(305 mm) above any door, window or gravity air inlet into
any building ( fig. 26 [2], [X
If multiple boilers are installed in a row, allow at least
1 foot (305 mm) clearance between the vent termination
of one and the combustion air intake of the other.
Vent termination must be at least 1 foot (305 mm) above
grade, anticipated snow line or roof surface (Canada
1-1/2 feet (457 mm) minimum) (
Vent termination must be at least 7 feet (2135 mm) above
a public walkway ( fig. 26 [X
condensate spilling from the termination does not create
a hazard or a nuisance.
Vent termination must be 3 feet (915 mm) above any
forced air intake within 10 feet (3050 mm) (
[Y ], page 46).
B
Do not extend exposed vent pipe outside the building
beyond recommended distance. Condensate could freeze
and block vent pipe.
2
X
6 720 641 933-19.1O
], [X ], page 46).
1 3
fig. 26 [Y ], page 46).
A
], page 46). Ensure that
5
fig. 26 [1],
Copyright (optional information)