Digital Packaged Terminal Air Conditioners & Heat Pumps
Cooling: 7600 – 15,000 Btuh
Heating: 7600 – 14500 Btuh (Heat Pump) 6824 – 17060 Btuh (Electric Heat)
Friedrich Models: PDE – Cooling with or without electric heat PDH – Heat Pump with electric heat
All units shall be factory assembled, piped, wired and fully charged with
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 ¼”. The unit shall be designed so that room intrusion may be as little as 7 ½”. Installations in walls deeper than 13 ¼” 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 her- metically sealed and consist of a rotary compressor that is externally mounted on vibration isolators no smaller than 1 3/8” dia. x 1 ½” high; condenser and evaporator coils constructed of copper tubes and
and have a drain pan capable of retaining 1 ½ gallons of condensate. A tertiary condensate removal system shall also be incorporated for
of the building as a safeguard against damage to the interior room.
INDOOR AIR HANDLING SECTION – The indoor air handling sec- tion shall consist of a tangential blower wheel direct driven by a totally enclosed motor. The air handling system shall be designed to minimize
fan must have three fan speeds that may be selected by the user.
throughout the room. The grille shall be reversible to allow a change
personal injury or damage to the unit.
and reusable by cleaning with water or by vacuuming.
The chassis shall have a
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,
CONTROLS – Covered controls shall be accessible in a compartment at least 7½” wide with the controls no deeper than 1 ¼” 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 re- ceive input from the digital control panel through push buttons labeled: ‘Cool’, ‘Heat’, ‘High Fan’, ‘Med Fan’, ‘Low 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
•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 PDH heat pumps only).
PTAC models shall use a single stage cool / single stage heat ther- mostat. PTHP models shall use a single stage cool /
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. All units shall feature a
GENERAL CONSTRUCTION – The wall sleeve shall be constructed of
cured for durability. The sleeve shall be shipped with a protective weatherboard and a structural center support, and be insulated for
shipped separately and made from stamped or extruded anodized aluminum. All louvers shall be in the horizontal plane.
clips. As an option the cover may be attached by two screws to pre- vent tampering. The front panel will feature a contoured discharge with no sharp corners.
CORROSION PROTECTION – The unit shall have
-
rioration. The outdoor coil shall have Diamonblue corrosion protection
applications including seacoast environments. All outdoor coils shall also have stainless steel endplates to eliminate rusting of the endplates.
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.
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