Product data

E. Outdoor Coil:
Coil shall be constructed of aluminum fins mechanically bonded to internally
enhanced, seamless copper tubes which are cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigerant circuit components shall include brass external liquid line service
valve with service gage port connections, suction line service valve with service
gage connection port, service gage port connections on compressor suction and
discharge lines with Schrader type fittings with brass caps, accumulator, bi-flow
filter drier, pressure relief, reversing valve, and heating mode metering device.
G. Controls and Safeties:
Operating controls and safeties shall be factory selected, assembled, and tested.
The minimum control functions shall include the following:
1. Controls:
a. Time delay restart to prevent compressor reverse rotation on single-phase
scroll compressors.
b. Automatic restart on power failure.
c. Safety lockout if any outdoor unit safety is open.
d. A time delay control sequence provided through the fan coil board,
thermostat, or controller.
e. High-pressure and liquid line low-pressure switches.
f. Automatic outdoor-fan motor protection.
g. Start capacitor and relay (single-phase units without scroll compressors).
2. Safeties:
a. System diagnostics.
b. Compressor motor current and temperature overload protection.
c. High pressure relief.
d. Outdoor fan failure protection.
H. Electrical Requirements:
1. Nominal ¾ ton unit shall operate on single-phase, 60 Hz power at 115 v. All
other units shall operate on single-phase, 60 cycle power at 208/230 v.
2. Unit electrical power shall be a single point connection.
3. Unit control voltage to the indoor-fan coil shall be 24 v, except 38BK009,012
units which shall supply line voltage.
4. All power and control wiring must be installed per NEC and all local building
codes.
5. Unit shall have high and low-voltage terminal block connections.
I. Special Features (Field Installed):
1. Low-Ambient Kit:
Control shall regulate fan-motor cycles in response to saturated condensing,
pressure of the unit. The control shall be capable of maintaining a condensing
temperature of 100 F ± 10 F with outdoor temperatures to –20 F. Installation
of kit shall not require changing the outdoor-fan motor. MORE ON NEXT PAGE