19
Marvair Classic AVPA/HVPA/HVPSA Heat Pump I&O Manual
11/2017 Rev. 7
Additional Items Needed:
Additional hardware and miscellaneous supplies (not furnished by Marvair
®
) are needed for installation.
For example, the list below contains approximate quantities of items typically needed for mounting a
unit on a wood frame wall structure with standard full length mounting bracket or flanges. Concrete or
fiberglass structures have different requirements.
(10)
3/8" mounting bolts
or lag screws for side brackets and anchors, if required for side brackets.
(20)
3/8" washers
(10)
3/8" hex nuts
(6)
3/8" x 2-1/2" lag screws
for bottom bracket
•
Silicone Sealer
to seal around cracks and openings
•
7-conductor low voltage multi-colored wire cable
(i.e. thermostat wire)
•
Appropriate electrical supplies
such as
conduit, electrical boxes, fittings, wire connectors,
etc.
•
High voltage wire
, sized to handle the MCA (minimum circuit ampacity) listed on the data plate.
•
Over-Current Protection Device
sized in accordance with the MFS (maximum fuse size) listed on
the unit data plate.
Duct materials usually are also needed in addition to the mounting hardware. To save time, design the
duct work before mounting the unit.
2.4 Porting and Duct Work
WARNING
FIRE HAZARD
Improper adjustment, alteration, service, maintenance or installation could cause serious
injury, death and/or property damage.
Installation or repairs made by unqualified persons could result in hazards to you and
others. Installation MUST conform with local codes or, in the absence of local codes, with
codes of all governmental authorities have jurisdiction.
The information contained in this manual is intended for use by a qualified service
agency that is experienced in such work, is familiar with all precautions and safety
procedures required in such work, and is equipped with the proper tools and test
instruments.
General Information
Note:
The following instructions are for general guidance only. Due to the wide variety of installation
possibilities, specific instructions will not be given. When in doubt, follow standard and accepted
installation practices, or contact Marvair
®
for additional assistance.
Wall Openings
Measure the dimensions of the supply and return openings on the heat pump unit.
WARNING
Cut the supply opening in the exterior wall for the supply and return.
IMPORTANT: All units must
have one inch clearance on all four sides of the supply outlet duct flange on the unit. The
one inch clearance must extend on all sides of the supply duct for the first three feet from
the unit.
The duct must be constructed of galvanized steel with a minimum thickness of .019".
