Reciprocating compressors with
crankcase heaters are standard on 2,
2½ and 3-ton models. Scroll
compressors are used on all other
models and no crankcase heaters
are required.
R-410A Refrigerant:
Designed with R-410A (HFC) nonozone depleting refrigerant in
compliance with the Montreal protocol
and 2010 EPA requirements.
ECM Indoor Blower Motor:
Features an electronically commutated
motor providing super-high efficiency,
low sound levels and soft-start
capabilities. The motor is selfadjusting to provide the proper airflow
rate for a broad range of static
pressure in ducted installations without
user adjustment or wiring changes.
Aluminum Finned Copper Coils:
Grooved tubing and enhanced
louvered fin for maximum heat
transfer and energy efficiency.
Outdoor coil is constructed with
special corrosion resistant
hydrophilic fin stock with 2-layer
coating. (1st layer - blue acrylic
primer; 2nd layer - clear topcoat.)
Thermal Expansion Valves:
Models with reciprocating
compressors have bleed TXV,
models with scroll compressor have
non-bleed TXV.
Discharge Muffler:
Standard on 2½ and 3-ton models.
Liquid Line Filter Drier:
Protects system against moisture.
Compressor Control Module:
Built-in off-delay timer adjustable from
30 seconds to 5 minutes. 2-minute
on-delay if power interrupt. 120second bypass for low pressure
control, and both soft and manual
lockouts for high and low pressure
controls. Alarm output for alarm relay.
Phase Rotation Monitor:
Standard on all 3-phase models.
Protects against reverse rotation if
power supply is not properly
connected.
High & Low Pressure Switches are
Auto-Reset
Built-in lockout circuit resets from the
room thermostat. Provides commercial
quality protection to the compressor.
Pre-Painted 20 Gauge Zinc Coated
Steel Cabinet:
Cleaned, rinsed, sealed and dried
before the polyurethane primer is
applied. The cabinet is handsomely
finished with a baked on textured
enamel, which allows it to withstand
1000 hours of salt spray tests per
ASTM B117-03.
Pre-Painted 16 Gauge Zinc Coated
Unit Base:
The unit base is treated with the
same paint coatings as the cabinet
above, insuring years of service.
Top Discharge Outdoor Fan:
Efficiently moves air quietly for
effective heat exchange.
Electrical Components & Controls:
Readily accessible for easier service.
Field Installed Accessories
Optional Field Installed Electric Heat
Strips:
With automatic limit and thermal cutoff.
• Field installed heater package for all
models.
• Features slide-in field assembly with
various BTUH outputs.
• Permits stocking of only one unit.
Optional Field Installed Low Ambient
Control:
Cycles outdoor fan motor below 55°F
outdoor temperature to maintain acceptable
condensing pressure.
• Intertek ETL Listed to Standard for Safety Heating
and Cooling Equipment ANSI/UL 1995/CSA 22.2
No. 236-05, Third Edition.
Form No.S3383-1112
Supersedes S3383-510
Page1 of 8
1 ECM = Electronically Commutated Motor
2 Maximum time delay fuse or HACR type circuit breaker for protection of field wiring devices.
3 Based on
75°C
copper wire. All wiring must conform to the National Electrical Code and all local codes.
4 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to National Electric Code (latest revision), Article 310 for power
1 Motor will deliver consistent CFM through voltage supply range with no deterioration (197-253V for all 230/208V models).
2 Continuous CFM is the total air being circulated during continuous (manual fan) mode.
3 Will occur automatically with a call for “Y” for cooling mode operation.
4 Will occur automatically with a call for “W1” for heating mode operation.
Form No.S3383-1112
Supersedes S3383-510
Page2 of 8
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Optional Field Installed Electric Heater Packages
Optional field-installed electric heater packages are available for 5 through 15Kw
capacities. The heater packages are UL listed to be field-installed into the basic unit.
They feature prewired control circuit wiring with plug-in connector. Simply slide the
heater into the unit, plug in the pretested control circuit and connect the separate high
voltage circuit wiring.
IMPORTANT: While this electrical data is presented as a guide, it is important to
electrically connect properly sized fuses and conductor wires in accordance with the
National Electrical Code and all existing local codes.
Optional Field Installed Heater Packages Are Only To Be Used With The Models
As Indicated Below
1 Maximum size of the time delay fuse or HACR circuit breaker for protection of field wiring devices.
2 Based on wire suitable for 75°C. Other wiring materials must be rated for marked “Minimum Circuit Ampacity” or greater. Based on 75°C copper wire. All wiring
must conform to the National Electric Code and all local codes.
3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), Article 310 for
power conductor sizing.
IMPORTANT:While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor
wires in accordance with the National Electrical Code and all existing local codes.
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Form No.S3383-1112
Supersedes S3383-510
Page3 of 8
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