Vent Termination
Bird Screen
Combustion Air
Termination
Bird Screen
18
CHAPTER 2
CHAPTER 2 - DIRECT VENT INSTALLATION OF VENT/AIR PIPING
The installer must install the factory-
supplied “bird screens” on the vent and
combustion air terminations.
DANGER
Fig. 9 - Sidewall Vent Bird Screen Installation Fig. 10 - Sidewall Combustion Air Bird Screen Installation
2.2.4 Direct Vent - Multiple Boiler Installation -
Sidewall
1. On installations of multiple EXALT boilers, terminate
each vent and combustion air pipe as described in
this manual.
2. The wall penetration of the vent and combustion air
piping must be such that the combustion air inlet
is a minimum 12” [30.5 cm] from the adjacent vent
pipe of the other boiler for installations in the U.S
as shown in Fig. 11 on page 19. For installations
in Canada, provide clearances as required by CAN/
CSA B149.1.
The combustion air inlet of the EXALT is defined
as being part of a direct vent system. It is not
considered as a forced air intake. The required
clearance of an adjacent boiler vent to a forced
air inlet does not apply in a multiple installation
of EXALT boilers.
NOTICE
• Fig. 11 on page 19 shows one option for
vent and combustion air terminations of
multiple EXALT boilers. Either termination
option shown in Fig 6 or Fig. 7 on page 17
can be used for multiple EXALT boilers. The
12” [30.5 cm] minimum distance between
centerlines of the combustion air and vent
piping must be maintained for any chosen
option.
• Refer to Fig. 6 or Fig. 7 on page 17 for the
vent and combustion air inlet termination
dimensions for each unit installed in a
multiple installation.
NOTICE
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