INSTALLATION AND OPERATION INSTRUCTIONS
1-16
SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERSSL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
1.4.9 Combustion Air Filtration
If combustion air contamination from ingested particulate matter is a concern in any
installation, an optional air intake lter may be installed. IBC supplied air intake lters
have a known pressure drop and fouling factor and should be used as a component of the
combustion air system according to the allowable intake length in Table 4.
IMPORTANT: Under no circumstances should a third-party air lter be installed on
an IBC boiler without proper evaluation and written approval of the IBC Engineering
Department.
1.4.10 Closet Installations
For installations in a conned space (such as a closet), ventilation openings may be
needed through a door or wall to prevent excessive heat from building up inside the
space.
The boiler shall not be exposed to ambient conditions above 122°F (50°C) or below 32°F
(0°C).
NOTE
Combustion fan blockages
can occur when environmental
particulate and foreign matter
contaminants (leaves, dust,
dandelion & cottonwood uff,
etc) are drawn into the air intake.
In areas where this problem is
suspected to be an issue, our
optional air intake lter should be
installed.
Filters should be checked and
cleaned or replaced on a regular
schedule based on the severity
of the problem.
Figure 21: Direct vent - intake, exhaust system with optional air intake lter (ltration may
also be used on indoor air applications as required)