Duct Work; Filters; Figure 7 Supply Duct Connections; Figure 8 Filter Location - Bard Q-TEC Q30H2-A Installation Instructions Manual

DUCT WORK

Any heat pump is more critical of proper operating
charge and an adequate duct system than a straight air
conditioning unit. 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 Q-TEC series heat pump has provision to attach a
supply air duct to the top of the unit. Duct connection
size is 12" x 20". The duct work is field supplied
and must be attached in a manner to allow for ease
of removal when it becomes necessary to slide the
unit out from the wall for service. See Figure 7 for
suggested attachment method.
FIGURE 7
Supply Duct Connections
ROOM SIDE OF
Q-TEC UNIT
NOTE: Unit cabinet, supply air duct and duct free
plenum are approved for "0" clearance to
combustible material.
The Q-TEC series heat pumps are designed for use with
free return (non-ducted) and either free blow with the
use of QPB Plenum Box or a duct supply air system.
The QPB and QPBHW Plenum Box mounts on top
of the unit and has both vertically and horizontally
adjustable louvers on the front discharge grille.
For hot water coil option, a QPBHWxx-F for free blow or
QPBHWxx-D for ducted airflow is used.
Manual 2100-601E
Page 10 of 42
When used with a ducted supply, a QCX Cabinet
Extension can be used to conceal the duct work above
the unit to the ceiling. This extends 20" above the unit
for a total height above the floor of 10'-7/8". 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 air flow up to the maximum ESP shown in Table
9. 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 1" throw away filters [(1) 16x16 and (1) 16x20]
are supplied with each unit. The filters slide into filter
brackets (see Figure 8).
The filters are serviced from the inside of the building
by opening the hinged door. This door is attached by
T-25 torx screw and one locking latch.
The internal filter brackets are adjustable to
accommodate 2" filters. The tabs for the 1" filters
must be bent down to allow the 2" filters to slide in
place.
SUPPLY DUCT
TO BE FIELD
SUPPLIED
ATTACHMENT
SCREWS TO
BE FIELD
SUPPLIED
FILTERS
DUCT FLANGE
PROVIDED WITH
UNIT
RETURN AIR
GRILLE
FIGURE 8
Filter Location