2
Model number nomenclature
38BYC 018
Electric Heat Pump
Nominal Capacity
018 — 18,000 Btuh 042 — 42,000 Btuh
024 — 24,000 Btuh 048 — 48,000 Btuh
030 — 30,000 Btuh 060 — 60,000 Btuh
036 — 36,000 Btuh
331
Packaging
Series
Electrical
3 — 208-230-1
Built-in-Reliable Components
—
Includes a suction-tube accumulator
that reduces the amount of liquid
refrigerant reaching the compressor,
a loss of charge switch, and an
internal pressure relief valve for high-
pressure protection.
Defrost Control Board
— Incorporates
a defrost relay, defrost timer, and low-
voltage terminations. The defrost
control is a time/temperature
initiation/termination control which
includes 3 field-selectable time
periods of 30, 50, and 90 minutes.
Thermostatic Expansion
Valve (TXV)
— This unit must be
installed with a TXV on the indoor
coil. The FC4 and FK4 indoor fan
coils come factory equipped with a
bi-flow TXV. When installed in this
application, no further change is
required. If any other indoor fan coil
or furnace coil is used, an accessory
bi-flow TXV must be installed. See
accessory list in this publication for
correct part number.
Discharge Muffler
— Incorporated
to minimize low frequency sound and
pressure pulsation generated by
compressor discharge gas.
Weather-Protective Cabinet
—
Steel is protected with a galvanized
coating and treated with a layer of
zinc phosphate. A coat of modified
polyester powder is then applied and
baked on, providing each unit with a
hard, smooth finish that will last for
many years.
All screws on cabinet exterior are
coated for a long-lasting, rust-
resistant, quality appearance.
Unit Design
— All units are equipped
with totally enclosed fan motors for
greater reliability under rain and snow
conditions. The large, wraparound
coil uses copper tube and enhanced
aluminum fin and is designed for
optimum heat transfer during heating
and cooling. The vertical air
discharge carries the sound and
air up and away from adjacent
patio areas and foliage. The
condenser coil can be cleaned with a
common garden hose.
External Service Valves
— Both
service valves are brass, front seating
type. Valves are externally located so
refrigerant tube connections can
be made quickly and easily with sweat
field connections. Each
valve has a service port for ease of
checking operating refrigerant
pressures.
Limited Warranty
— Standard 5-year
limited warranty on parts, 5-year
limited warranty on compressor.
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