
7
Cooling: 9500 – 24000 Btuh
Heating: 8500 – 22500 Btuh (Reverse Cycle)
8500 – 34130 Btuh (Electric Heat)
Friedrich VEA – Cooling with electric heat
Models: VHA – Heat Pump with electric heat
All units shall be factory assembled, piped, wired and fully charged
with R-22. All units shall be certied in accordance with ARI Stan-
dard 390 for Single Packaged Vertical Air Conditioners and 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 18,000 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 instal-
lation through walls from 4 ½" – 14" in thickness. Wall plenums will
be adjustable to minimize installation clearances. 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 louver 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 her-
metically sealed and consist of a rotary compressor that is externally
mounted on vibration isolators no smaller than 1 ¾" dia. 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 eciency 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 18,000 Btu. 24,000 Btu models
shall utilize a separate motor for both the indoor and outdoor air
sections. Airow shall be directed vertically up through a stan-
dard 10" ex duct starter 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 con-
trolled 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-discon-
nect 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 eciency.
The wall plenum (required factory accessory) shall be shipped
separately and constructed of 20 gauge galvanized zinc-coated
steel; pre-treated with zinc-phosphate and sealed with a chromate
rinse, then powder coated for maximum coverage and protection.
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 alu-
minum with louvers in the horizontal plane.
The unit shall include vibration isolators mounted under the chassis
and a non-rigid plenum-to-chassis connection to isolate vibrations
to the building.
The unit shall have a plastic fan, fan shroud and drain pan and alu-
minum 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 axed directly on to the unit chassis. Optional return air grilles
and access panels shall be available as factory accessories for instal-
lation in the wall or door of the mechanical closet.
WARRANTY – The warranty is one year on all parts and 5 years
on the sealed system including compressor, indoor and outdoor
coils and refrigerant tubing.
HVAC Engineering Specications
A-Series Vertical Packaged Air Conditioners & Heat Pumps