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 one inch 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
The
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
FIGURE 7
SUPPLY DUCT CONNECTIONS
SUPPLY DUCT
TO BE FIELD
SUPPLIED
ATTACHMENT
SCREWS TO
BE FIELD
SUPPLIED
ROOM SIDE OF
DUCT FLANGE
PROVIDED WITH UNIT
NOTE: Unit cabinet, supply air duct and free blow plenum are approved for “0” clearance to combustible material.
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
FILTERS
Two
16x20] are supplied with each unit. The filters slide into filter brackets. Refer to Figure 8.
The filters are serviced from the inside of the building by opening the hinged door. This door is attached by a screw and one locking latch.
The internal filter brackets are adjustable to accommodate
FIGURE 8
FILTER LOCATION
FILTERS
RETURN AIR
GRILLE
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