All units shall be
factory assembled, piped, internally wired and fully charged
with R-22. All units shall be designed to operate at outdoor
ambient temperatures as high as 115° F. Cooling capacities shall
be rated in accordance with A.R.I. standards. The YCC-F heating/cooling
unit design is U.L. listed, specifically for outdoor
applications using propane or natural gas. All units shall be
designed for outdoor rooftop or ground level installation.
Exterior surfaces of all units shall be phosphatized, zinc-coated
steel with epoxy resin primer and baked enamel finish. Shipped
for horizontal application,
convertible to downflow.
Casings
All panels shall be 20-gauge steel, gasketed and insulated. Foil-faced
glass fiber insulation shall be in the heat exchanger section.
Foilfaced insulation shall be in the evaporator section. Base
pan and mounting rails shall be 18 gauge. WEATHERGUARD™ exterior
corrosion resistant screws shall be used for added resistance to
rust and corrosion.
Controls
Refrigeration cycle controls shall include condenser fan,
evaporator fan and compressor contactors. Compressors shall beequipped with a combination internal winding thermostat/current
overload. Internal high pressure relief shall also be provided.
Refrigeration System
Compressors — All units shall have hermetically sealed Climatuff®
compressors. Compressors shall be equipped with over temperature,
over current and high pressure protection. Crankcase heaters
shall be standard on all three phase models.
Evaporator Coil — Internally enhanced 3/8-inch OD seamless
copper tubing mechanically bonded to aluminum fins, factorypressure and leak tested at 250 to 300 psig.
