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 INSTINCT boilers, ter-
minate each vent and combustion air pipe as de-
scribed in this manual.
2. The wall penetration of the vent and combustion
air piping must be such that the combustion air in-
let 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 installa-
tions in Canada, provide clearances as required by
CAN/CSA B149.1.
The combustion air inlet of the INSTINCT is de-
fined as being part of a direct vent system. It is
not considered as a forced air intake. The re-
quired clearance of an adjacent boiler vent to
a forced air inlet does not apply in a multiple
installation of INSTINCT boilers.
NOTICE
• Fig. 11 on page 19 shows one option
for vent and combustion air terminations
of multiple INSTINCT boilers. Either ter-
mination option shown in Fig 6 or Fig. 7
on page 17 can be used for multiple IN-
STINCT boilers. The 12” [30.5 cm] minimum
distance between centerlines of the com-
bustion air and vent piping must be main-
tained 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 mul-
tiple installation.
NOTICE
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