Product Profile (2020)
Table Of Contents
12
HVAC Engineering Specifications
Digital Packaged Terminal Air Conditioners & Heat Pumps
All units shall be factory assembled, piped, wired and fully charged
with R-410A. All units shall be certied in accordance with ARI
Standard 310 for air conditioners and ARI standard 380 for heat pumps.
Units shall be UL listed and carry a UL label. All units shall be factory
run-tested to check operation and be Friedrich or equivalent.
The basic unit shall not exceed 16" high x 42" wide. Overall depth
of the unit from the rear of the Friedrich wall sleeve to the front of
the decorative front cover shall not exceed 21
1
/4". The unit shall be
designed so that room intrusion may be as little as 7
1
/4". Installations
in walls deeper than 13
1
/4" may be accomplished with the use of a deep
wall sleeve (PDXWSEXT). Unit shall draw in ambient air through both
sides of an outdoor architectural louver or grille measuring 42" wide
x 16" high and shall exhaust air out middle portion of the louver. The
architectural louver and wall sleeve shall be designed so that the
louver may be installed from the inside of the building.
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
3
/8" dia.
x 1
1
/2" 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 and have a drain pan capable of retaining 1
1
/2 gallons of
condensate. A tertiary condensate removal system shall also be
incorporated for back up and shall overow through the wall sleeve
and to the outside of the building as a safeguard against damage to
the interior room.
INDOOR AIR HANDLING SECTION – The indoor air handling section
shall consist of a tangential blower wheel direct driven by a totally
enclosed motor. The air handling system shall be designed to minimize
airow noise and provide smooth and consistent airow. The indoor
fan must have three fan speeds that may be selected by the user.
The indoor discharge grille shall be designed to maximize airow
throughout the room. The grille shall be reversible to allow a change
in the air ow directions. The grille openings shall be sized to prevent
personal injury or damage to the unit.
The front cover shall incorporate dual air lters conveniently mounted
in the front of the unit. The lters must be accessible without the
removal of the front cover. The lters shall be made of antimicrobial
material to prevent mold and bacterial growth. The lters shall be
washable and reusable by cleaning with water or by vacuuming.
The chassis shall have a built-in damper capable of providing at least
75 CFM of fresh air into the conditioned area. A ne mesh screen shall
lter the incoming fresh air. There must be a provision for locking the
damper closed to ensure a proper seal.
OUTDOOR AIR HANDLING SECTION – The outdoor air section shall
consist of a single injection molded fan shroud that incorporates
the outdoor motor mount into a single piece for ease of service and
assembly. The outdoor motor shall be totally enclosed, ball-bearing,
permanently lubricated and directly drive the outdoor fan/slinger ring.
CONTROLS – Covered controls shall be accessible in a compartment
at least 7
1
/2" wide with the controls no deeper than 1
1
/4" in the opening
to facilitate easy operation of the unit.
The unit controls shall feature a soft blue LED readout that can display
either room temperature or setpoint temperature. The unit shall
receive input from the digital control panel through push buttons
labeled: ‘Fan’, ‘Cool’, ‘Heat’, ‘Low Fan’, ‘Med Fan’, ‘High Fan’, ‘
’, ‘’
and ‘Power’. When ‘Off’, the unit may be put directly into cooling or
heating mode by pressing the ‘Cool’ or ‘Heat’ button.
The unit must have the following energy saving and convenience
features built-in:
• Quiet start/stop fan delay
• Fan cycle control for cooling and heating independently
• Room freeze protection
• Random compressor restart
• Electronic temperature limiting
The PTAC must also offer the ability to be controlled by a remote
wall-mounted thermostat without additional accessories. Low voltage
inputs will include: C (common), R (24V power), Y (cooling), GL (fan low),
GH (fan high), W (heat) and O (reversing valve on PZH heat pumps only).
PTAC models shall use a single stage cool/single stage heat
thermostat. PTHP models shall use a single stage cool/two-stage
heat thermostat. An accessory thermostat must be available from
the manufacturer, RT7/RT7P or equivalent. The RT7/RT7P thermostat
will provide temperature setpoint, mode selection from cool, heat
and fan modes. The thermostat must also allow the selection of fan
speed between high and low speed.
Other controls accessible without removal of the chassis shall include
fan cycle switch, fresh air vent control and emergency heat override
switch (heat pump only).
ELECTRICAL CONNECTION – All PTAC/PTHP units shall come from
the factory with a power cord installed. All 230/208V power cords
shall feature a leakage current detection device on the plug head.
GENERAL CONSTRUCTION – The wall sleeve shall be constructed
of 18-gauge Galvanized zinc-coated steel. It shall be prepared by
a process where it is zinc phosphate pretreated and sealed with a
chromate rinse, then powder coated with a polyester nish and oven
cured for durability. The sleeve shall be shipped with a protective
weatherboard and a structural center support, and be insulated for
sound absorption and thermal efciency. The grille or louver shall
be shipped separately and made from stamped or extruded anodized
aluminum. All louvers shall be in the horizontal plane.
The front panel shall attach rmly to the chassis by two hidden spring
clips. As an option the cover may be attached by two screws to prevent
tampering. The front panel will feature a contoured discharge with
no sharp corners.
CORROSION PROTECTION – The unit shall have corrosion-resistant
fans, fan shroud and drain pan for corrosion protection and to prevent
rust on the side of the building below the outdoor louver. The unit shall
feature corrosion resistant materials and nishes to help prevent
deterioration. All outdoor coils shall have aluminum endplates to
eliminate rusting of the endplates.
WARRANT Y – The warranty is t wo years on all parts and labor and ve
years on the sealed system, parts and labor, including compressor,
indoor and outdoor coils and refrigerant tubing.
Cooling: 7200 – 14500 Btu
Heating: 6400 – 13600 Btu (Heat Pump)
6824 – 17060 Btu (Electric Heat)
Friedrich Models: PZE – Cooling with electric heat
PZH – Heat Pump with electric heat