National Comfort Products
539 Dunksferry Road • Bensalem, PA 19020 • (215) 244-1400 • 1-800-523-7138 • Fax: (215) 244-9579
ENGINEERING SPECIFICATION GUIDE
THRU-THE-WALL SPLIT SYSTEM HEAT PUMP UNIT
SAFETY APPROVAL
- Each unit shall be ETL listed for safety approval.
GENERAL
- Each outdoor heat pump unit shall be factory assembled and run tested.
THRU-THE-WALL APPLICATION
- Each unit shall be designed for installation flexibility. Horizontal air inlet and outlet on the
same side of the unit for thru-the-wall or conventional mounting.
COILS
- Outdoor coils shall be fabricated of raised lance aluminum fins mechanically bonded to seamless rifled copper tubes.
CABINET
- Unit cabinet shall be constructed of heavy-gauge galvanized or aluminized steel. The steel shall be treated by
phosphate washes prior to electrostatically-applied and oven-baked paint.
FACTORY CHARGED
- Each unit shall be charged with R-22, for proper operation with recommended indoor coil and 10 foot
tubing.
SERVICE VALVES
- Each unit shall be equipped with liquid and vapor shut off valves. The valves are to be constructed of brass.
Silver-brazed connection is required for connection to refrigerant lines.
COMPRESSOR
- Shall be welded hermetic type with internal vibration isolation and built-in thermal and electrical protective
devices.
P.S.C. BLOWER MOTOR
- Each unit shall have high efficiency Permanent Split Capacitor motor for low current and high
efficiency unit operation.
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