Filter
Top Products
DUAL COMPRESSORS AND DUAL REFRIGERATION CIR-
CUITS (090-150 and 216-300 Units) are provided. Two com-
pressors, each on its own independent circuit, provide standby
reliability and high operating efficiency.
ADVANCED DESIGN of evaporator and condenser coils pro-
vides optimum heat transfer and cooling efficiency. Coils are
computer-designed with advanced heat transfer surfaces, and
are fabricated of copper tubing with aluminum fins.
COMMERCIAL STRENGTH BASE RAILS (full-perimeter on
036-150 units) with built-in rigging capability allow easy rigging
of unit.
WEATHER-RESISTANT CABINET is built for durability in any
climate. The cabinet is made of pre-painted, galvanized steel for
long life and high-quality appearance.
LOW-AMBIENT OPERATION is provided standard on most
units. The 036-150 units and the 240 units operate in cooling
down to 25 F as shipped from the factory. The 180 units operate
down to 40 F, the 216 units operate down to 35 F, and the
300 units operate down to 48 F. Low-ambient kits are not re-
quired for most applications.
HERMETICALLY-SEALED COMPRESSORS on the 036-150
units prevent contamination to help promote longer life and de-
pendable operation. The 180-300 units have semi-hermetic
compressors.
COMPRESSOR VIBRATION ISOLATION MOUNTING on all
units eliminates noise-causing vibration transmission into the
conditioned space.
CRANKCASE HEATERS on the 180-300 units keep the oil free
of refrigerant during the off cycle for added compressor life and
reliability. Crankcase heaters are not necessary on the 036-150
units due to high-side crankcase design (072,150 units) and low
refrigerant charge levels (036-150 units).
POWER AND CONTROL CONNECTIONS are made on the
same side of the unit to simplify installation.
STANDARD WARRANTIES include 1 year on parts, with an ad-
ditional 4 years on compressors (036-180 units). Additional ex-
tended warranties are also available.
3 TO 6 TON UNITS WEIGH LESS THAN 500 LB as standard
from the factory. This can eliminate the need for structural en-
gineering approval on replacement jobs.
BELT-DRIVEN EVAPORATOR-FAN MOTORS are standard on
all 6 to 25 ton units, allowing adjustment of the available static
pressure to meet the job requirements of even the most de-
manding applications. Belt-driven evaporator-fan motors are
available as a factory-installed option on the 3 to 5 ton units.
FACTORY-INSTALLED OPTIONS
DESCRIPTION AND USAGE
Durablade (036-150) and Standard Integrated (180-300)
Economizers — The economizer will allow a fixed percentage
(between 0 and 100%) outdoor ventilation air into the unit any
time the evaporator fan is running.A dry-bulb thermostat placed
outdoors will bring in up to 100% outdoor air whenever the tem-
perature of the outdoor air alone will adequately provide cooling.
If the economizer alone cannot provide enough cooling, then si-
multaneous economizer and compressor operation will provide
the most economical operation.
SUGGESTED USE:
• To allow a fixed percentage of outdoor air any time the evapo-
rator fan is on, or operates in economizer mode if outdoor air
can provide cooling, but closes when the evaporator fan is off
to prevent cold backdrafts and wasted energy.
• To reduce energy usage. Use whenever the number of hours
of operation at below 55 F is significant.
• The damper may be used on either vertical or horizontal
applications.
Parablade Economizer (036-150 Units) — The unique design
of the Parablade economizer saves energy while providing eco-
nomical and reliable cooling. The new design uses a parallel-
opposed blade damper to permit outdoor ventilation air to enter
the unit any time the evaporator fan is running. The economizer
will permit cooling using 100% outdoor air whenever outdoor air
alone will provide adequate cooling. If the economizer alone
cannot provide enough cooling, then simultaneous economizer
and compressor operations will provide the most economical
operation. The economizer also has built-in spring return for re-
liable close-on-power loss. The Parablade design incorporates
standard enthalpy controls.
SUGGESTED USE:
• To allow a fixed percentage of outdoor air on vertical applica-
tions any time the evaporator fan is on, or to operate in econo-
mizer mode if outdoor air can provide cooling, but closes
when the evaporator fan is off to prevent cold backdrafts and
wasted energy.
• To reduce energy usage. Use whenever the number of hours
of operation at below 55 F is significant.
NOTE: Indoor-air quality (IAQ) restrictions require enthalpy con-
trols to help regulate humidity in the occupied space.
25% and 50% Manual Outdoor-Air Damper — Package con-
sists of a damper which can be set at 25% or 50% (036-150)
outdoor air. The package includes a rainhood and birdscreen.
SUGGESTED USE:
• To allow a fixed percentage of outdoor air for ventilation under
all conditions.
• The damper may be used on either vertical or horizontal
applications.
NOTE: The 25% manual outdoor-air damper will be factory
installed whenever the factory-installed economizer is not
chosen on the 180-300 units.
Alternate Evaporator-Fan Motors (036-060,120,150 Units)
and Drives (036-060,090,120,150 Units) — Alternate motors
and/or drives allow operation of the evaporator fan at conditions
outside the range of the standard factory motor and drive
combination.
SUGGESTED USE:
• When higher static/airflow is required to meet job conditions.
CONTENTS
Page
Model Description ............................4
ARI Capacity Ratings .........................5
Dimensional Drawings .......................6-13
Specifications ............................14-16
Selection Procedure .........................17
Gross Cooling Capacities ....................18-25
Air Delivery ..............................26-46
Electrical Data............................49-54
Operating Sequence .........................55
Typical Wiring Schematic .....................56,57
Typical Installation .........................58,59
Application Data ..........................60-63
Electric Heater Capacities .....................64
Engineers’ Specification Guide .................65,66
2