Duct Work; Filters; Figure 8 Supply Duct Connections; Figure 9 Filter Location - Bard I30A1DA Installation Instructions Manual

DUCT WORK

All duct work must be properly sized for the design
airflow requirement of the equipment. Air Conditioning
Contractors of America (ACCA) is an excellent guide
to proper sizing. All duct work or portions thereof
not in the conditioned space should be properly
insulated in order to both conserve energy and prevent
condensation or moisture damage. When duct runs
through unheated spaces, it should be insulated with
a minimum of 1" of insulation. Use insulation with a
vapor barrier on the outside of the insulation. Flexible
joints should be used to connect the duct work to the
equipment in order to keep the noise transmission to a
minimum.
The I-TEC Series models have provision to attach a
supply air duct to the top of the unit. Duct connection
size is 20" x 24". The flanges are shipped flat and
must be bent upward using sheet metal flanging pliers.
The duct work is field supplied. See Figure 8 for
suggested attachment method.
Make sure to seal the slots in the bend-up flange at the
time of securing your ductwork to the flange. This can
be accomplished with either foil tape or caulk. Failing
to do so may cause air leakage/whistling of air.
FIGURE 8
Supply Duct Connections
20"
24"
NOTE: Unit cabinet, supply air duct and duct free
plenum are approved for "0" clearance to
combustible material.
The I-TEC Series models are designed for use with free
return (non-ducted) and either duct free with the use of
IPBDF Series Plenum Box (8" or 12") or a duct supply
air system.
The IPBDF Plenum Box mounts on top of the unit and
has both vertically and horizontally adjustable louvers
on the front discharge grille.
When used with a ducted supply, an ICX28 Cabinet
Extension may be used to conceal the ductwork above
the unit to the ceiling. The ICX28 extends 28" above
the unit for a total height of 10'-2" for a floor mounted
Manual 2100-597G
Page 18 of 68
install (10'-5" with IRP3 riser and 10'-8" with IRP6
riser). It can be trimmed in the field for installations
that require less than 10'-2".
The unit is equipped with a variable speed indoor
blower motor which increases in speed with an increase
in duct static pressure. The unit will therefore deliver
proper rated airflow up to the maximum ESP shown in
Table 1B on page 5. However, for quiet operation of
the air system, the duct static should be kept as low as
practical, within the guidelines of good duct design.

FILTERS

Two 2" throw away filters (24 x 30) and two 1" throw
away filters (12 x 20) are supplied with each unit. The
2" filters slide into brackets on both sides for the return
air openings. The 1" filters are in the cabinet doors
for the vent (room air) exhaust. If a CRV or ERV vent
option is used, there are two additional ½" (8 x 17)
washable filters included with that option. See Figure
9 for specific locations. The filters are serviced from
the inside of the building by opening the cabinet doors
and do not require any tools to access.
SUPPLY DUCT AND
FASTENERS TO BE
FIELD SUPPLIED
BEND THE PROVIDED
SUPPLY FRAME FLANGES
UP FOR DUCT INSTALLATION
MIS-2959
FIGURE 9
Filter Location
24" X 30" X 2"
FILTERS
INDOOR
BLOWER
ACCESS
COMPRESSOR
ACCESS
ACCESS TO
WASHABLE FILTERS
VENT
OPTION
ACCESS
12" X 20" X 1"
FILTERS