13
All units shall be factory assembled, piped, wired and fully
charged with R-410A. All units shall be certied in accordance
with ARI Standard 390 for Single Packaged Vertical Heat Pumps.
Units shall be ETL listed and carry a ETL label. All units shall
be factory run-tested to check operation and be manufactured
by Friedrich or equivalent.
The basic unit shall not exceed 23
1
/
8
" wide x 23
1
/
8
" deep. Overall
height of the unit from the bottom of the isolators to the top of the
duct collar shall not exceed 32 ¼" for models up to 12,000 Btu and
47 ¼" for models up to 24,000 Btu. The unit shall be designed so
that the unit will insert into a factory supplied wall plenum 2
3
/
8
"
to minimize room intrusion. Factory supplied wall plenums shall
allow for installation through walls from 4 ½" – 14" in thickness.
Wall plenums will be adjustable to minimize installation clear-
ances. Unit shall draw in ambient air through upper portion of
an outside architectural louver measuring 25
9
/
16
" wide x 31
1
/
16
"
high and shall exhaust heated air out through the lower portion
of the louver. The unit shall be secured to the architectural lou-
ver by means of a two part, weather-resistant wall plenum. The
unit shall be capable of left, right or straight-in installations into
mechanical closet without eld modications.
REFRIGERATION SYSTEM – The refrigeration system shall be
hermetically sealed and consist of a rotary compressor that is
externally mounted on vibration isolators no smaller than 1 ¾"
diameter x 1 ½" high; condenser and evaporator coils constructed of
copper tubes and aluminum plate ns; and capillaries as expansion
devices. Unit shall have a fan slinger ring to increase efciency
and condensate disposal. A primary condensate removal system
consisting of ¾" FTP ttings on multiple locations shall exist. A
secondary overow from the primary drain pan shall expel water
to the outside of the building through the wall plenum and louver
in the event that the primary drain line clogs.
AIR HANDLING SECTION – The condenser fan shall be driven by
a single, totally enclosed, ball bearing, permanently lubricated
split capacitor fan motor for models up to 12,000 Btu. 18,000
and 24,000 Btu models shall utilize a separate motor for both
the indoor and outdoor air sections. Airow shall be directed
ver tically up through a standard 10" ex duct star ter collar and
into exible or rigid ducts to be distributed into the conditioned
area. Starter collar shall have both crimped edge to ease ex
duct installation and a waistline to prevent duct from loosening.
The chassis shall have a built-in damper capable of providing
at least 60 CFM of fresh air into the conditioned area. A ne
mesh screen shall lter the incoming fresh air. The damper
can be controlled by a slide lever located on the front of the unit.
CONTROLS – The unit shall be factory equipped with terminal
strip for connection to a standard 24-volt single-stage heat/
cool thermostat. A 24-volt transformer shall be included and
factory wired. Low voltage inputs will include: C (common), R
(24V power), Y (cooling), G (fan), W (heat) and B (reversing valve
on VHA heat pumps only).The unit shall be hard-wired and have
a quick-disconnect to disable power for control box service.
An emergency heat override switch must be available to allow
operation of the resistance heater in the event of a compressor
failure on heat pump models.
GENERAL CONSTRUCTION – The unit shall be constructed of
18-gauge galvanized zinc-coated steel. The unit shall feature
½" foil backed insulation for sound and thermal efciency.
The wall plenum (required factory accessory) shall be shipped
separately and constructed of 20-gauge galvanized zinc-coated
steel; pretreated with zinc-phosphate and sealed with a chro-
mate rinse, then powder-coated for maximum coverage and
protection. The plenum shall be black in color for minimal
visibility of unit from exterior of building. The plenum shall be
shipped with a protective weatherboard for use prior to nal
installation of the louver and chassis.
The architectural louver (required factory accessory) shall
be shipped separately and fabricated from extruded anodized
aluminum with louvers in the horizontal plane.
The unit shall include vibration isolators mounted under the
chassis and a nonrigid plenum-to-chassis connection to isolate
vibrations to the building.
The unit shall have a plastic fan, fan shroud, and drain pan; and
aluminum outdoor coil endplates for corrosion protection and to
help prevent rust on the side of the building below the outdoor
louver.
The unit shall be shipped with return air lter brackets and a 14"
x 20" lter afxed directly on to the unit chassis. Optional return
air grilles and access panels shall be available as factory acces-
sories for installation in the wall or door of the mechanical closet.
CORROSION PROTECTION - The unit shall feature corrosion
-resistant materials and nish to help prevent deterioration.
The outdoor coil shall have Diamonblue advanced corrosion pro-
tection consisting of hydrophilic-coated ns to prolong the life of
the coil in all applications including seacoast protection.
ACCESSORY ACCESS PANEL - An optional factory-supplied access
panel shall be available to provide access to the unit and adequate
return air. The panel shall feature a lter holder to accept a eld
supplied 25” x 20” x 1” lter. Kit shall contain a hinge bracket for
mounting the door with the return air openings high or low on
the door for optimal sound attenuation. For 9,000 and 12,000 Btu
models it is recommended to install the door with the hinge on the
right side and the return air openings high on the door. For 18,000
and 24,000 Btu models it is recommended to install the hinge on
the left with the openings low on the door.
WARRANTY – The warranty is one year on all parts and labor
and 5 years on the sealed system, parts and labor, including
compressor, indoor and outdoor coils and refrigerant tubing.
HVAC Engineering Specications
A-Series Vertical Packaged Heat Pumps
Cooling: 9400 – 23000 Btu
Heating: 8400 – 20000 Btu (Heat Pump)
Friedrich Models: VHA – Heat Pump with electric heat
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