74
2. Standard Safeties:
Unit shall incorporate compressor overtempera-
ture and overcurrent safety devices to shut off
compressor.
I. Operating Characteristics:
1. Unit shall be capable of starting and running in
cooling at 125 F ambient outdoor temperature,
meeting maximum load criteria of ARI Standard
210/240 at ±10% voltage.
2. Compressor with standard controls shall be capa-
ble of cooling operation down to 25 F ambient
outdoor temperature.
3. Compressor shall be capable of operation in heat-
ing duty down to –10 F ambient outdoor-air tem-
perature.
4. Unit shall be capable of simultaneous heating duty
and defrost cycle operation when using electric
heaters indicated in Section L, Special Features.
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 motor shall have permanently lubri-
cated bearings and inherent automatic-reset ther-
mal overload protection.
3. Totally enclosed outdoor-fan motor shall have
permanently lubricated bearings, and inherent
automatic-reset thermal overload protection.
L. Special Features:
Certain features are not applicable when the features
designated by * are specified. For assistance in amend-
ing the specifications, your local Carrier Sales Office
should be contacted.
* 1. Carrier PremierLink™ Controls:
a. Shall be available as a factory-installed or as a
field-installed accessory.
b. Shall work with CCN and ComfortVIEW™
software.
c. Shall be compatible with
Comfort
Link™
controllers.
d. Shall be ASHRAE 62-99 compliant.
e. Shall accept a CO
2
sensor in the conditioned
space — Demand Control Ventilation (DCV)
Ready.
f. Shall have baud communication rate of 38.4K
or faster.
g. Shall be Internet Ready.
h. Shall include an integrated economizer
controller.
2. Apollo Control:
a. Shall serve as interface between thermostat,
Carrier rooftop unit, and any external field-
supplied sensors.
b. Shall be powered by 24 vac/10 va, supplies
thermostat with 10 vdc. This power is supplied
by the Carrier rooftop unit, and is factory
wired.
3. 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.
* 4. 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 differ-
ential (Durablade economizer).
d. Capable of introducing up to 100% outdoor air
in both minimum and fully open positions.
e. Equipped with a gravity relief sliding plate
damper (Durablade economizer). Damper shall
close upon unit shutoff.
f. EconoMi$er shall be equipped with a baromet-
ric relief damper with up to 100% of return air
(004-007) or 90% of return air (008-012)
relief. The Durablade economizer is equipped
with 30% of return-air relief (004-012).
g. Designed to close damper during loss-of-power
situations with emergency power supply (Dura-
blade economizer) or spring return built into
motor (EconoMi$er).
h. Dry bulb outdoor-air temperature sensor shall
be provided as standard. Enthalpy control shall
be provided as an option.
i. Durablade economizer is a guillotine-style
damper, and the EconoMi$er is a gear-driven,
parallel blade design.
NOTE: EconoMi$er shall also be available with
field-installed two-stage power exhaust acces-
sory for vertical or horizontal duct applications.
5. 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.
6. 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.
* 7. 100% Two-Position Damper:
a. Two-position damper package shall include
single blade damper. Admits up to 100% out-
door air.
b. Damper shall close upon indoor fan shutoff.
c. Designed to close damper during loss of power
situations.
d. Equipped with barometric relief damper.
* 8. 25% Two-Position Damper:
a. Two-position damper package shall include
single blade damper and motor. Admits up to
25% outdoor air.
b. Damper shall close upon indoor fan shutoff.
* 9. Solid-State Enthalpy Control:
a. For use with Durablade economizer package
only.
b. Capable of sensing outdoor-air enthalpy con-
tent (temperature and humidity) and controlling
economizer cut-in point to have minimum heat
content air passing over the indoor coil for
most efficient system operation.
Guide specifications (cont)
