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GUIDE SPECIFICATIONS — SIZES 036-150 (cont)
2. Standard Safeties:
a. Unit shall incorporate compressor overtempera-
ture and overcurrent safety devices to shut off
compressor.
b. Heating section shall be provided with the follow-
ing minimum protections:
1) High-temperature limit switches.
2) Overcurrent protection.
c. High-pressure switch.
d. Low-pressure switch.
e. Freeze protection thermostat.
I. Operating Characteristics:
1. Unit shall be capable of starting and running at 125 F
ambient outdoor temperature, meeting maximum
load criteria of ARI Standard 210/240 or 360 at ±10%
voltage.
2. Compressor with standard controls shall be capable
of operation down to 25 F ambient outdoor
temperature.
J. Electrical Requirements:
All unit power wiring shall enter unit cabinet at a single
factory-predrilled location.
K. Motors:
1. Compressor motors shall be cooled by refrigerant
passing through motor windings and shall have line
break thermal and current overload protection.
2. Indoor blower (evaporator-fan) motor shall have
permanently lubricated bearings and inherent
automatic-reset thermal overload protection.
3. Totally enclosed condenser-fan motor shall have
permanently lubricated bearings and inherent
automatic-reset thermal overload protection.
L. Heating Section:
1. May be equipped with field-installed electric resis-
tance heater(s) of the characteristics shown in the
equipment schedule.
2. Heater elements shall be open wire type, adequately
supported and insulated with ceramic bushings.
M. Special Features:
Certain features are not applicable when the features
designated by * are specified. For assistance in amending
the specifications, contact your local Bryant Sales Office.
1. Roof Curbs:
a. Formed galvanized steel with wood nailer strip
and capable of supporting entire unit weight.
b. Allows for installing and securing ductwork to curb
prior to mounting unit on the curb.
* 2. Integrated Economizers:
a. Integrated integral-modulating type capable of
simultaneous economizer and compressor
operation.
b. Includes all hardware and controls to provide
cooling with outdoor air.
c. Equipped with low-leakage dampers not to
exceed 3% leakage, at 1 in. wg pressure
differential.
d. Capable of introducing up to 100% outdoor air in
both minimum and fully open positions.
e. EconoMi$er shall be equipped with a barometric
relief damper with up to 100% of return air (036-
072) or 90% of return air (090-150) relief.
f. Designed to close damper during loss-of-power
situations with spring return built into motor
(EconoMi$er).
g. Dry bulb outdoor-air thermostat protection shall
be provided as standard.
h. The EconoMi$er is a parallel blade design.
3. 50% Manual Outdoor-Air Damper:
Manual damper package shall consist of damper,
birdscreen, and rainhood which can be preset to
admit up to 50% outdoor air for year-round
ventilation.
* 4. 25% Manual Outdoor-Air Damper:
Manual damper package shall consist of damper,
birdscreen, and rainhood which can be preset to
admit up to 25% outdoor air for year-round
ventilation.
5. 100% Two-Position Damper:
a. Two-position damper package shall include single
blade damper and motor. Admits up to 100% out-
door air.
b. Damper shall close upon indoor (evaporator) fan
shutoff.
c. Designed to close damper during loss of power
situations.
d. Equipped with 15% barometric relief damper.
6. 25% Two-Position Damper:
a. Two-position damper package shall include single
blade damper and motor. Admits up to 25% out-
door air.
b. Damper shall close upon indoor (evaporator) fan
shutoff.
7. Electric Resistance Heaters and Single Point Kits:
a. Open wire nichrome elements with all necessary
safety operating controls.
b. UL listed and indicated on basic unit informative
plate.
c. Available in multiples to match heating
requirements.
d. Single point kits available for each heater when
required.
8. Low Ambient Control Packages:
Each package consists of condenser-coil tempera-
ture sensor to maintain condensing temperature
between 90 F and 110 F at outdoor ambient temper-
atures down to –20 F by condenser-fan speed modu-
lation or condenser-fan cycling.
9. Thermostat and Subbase:
Provides staged cooling and heating automatic (or
manual) changeover, fan control, and indicator light.
10. Thru-The-Bottom Service Connectors:
Kit shall provide connectors to permit electrical con-
nections to be brought to the unit through the
basepan.
* 11. Electronic Programmable Thermostat:
Capable of using deluxe full-featured electronic ther-
mostat. Shall use built-in compressor cycle delay
control for both heating and cooling duty.
12. Condenser Coil Hail Guard Assembly:
Hail guard shall protect against damage from hail
and flying debris.
50TFQ004-012
558F/551B036-150