Carrier 42C Series Product Data page 131

J. Operating Characteristics:
A single-circuit coil unit installed in a 2-pipe system
shall be capable of providing heating or cooling as
determined by the operating mode of the central
water supply system. A double circuit coil unit
installed in a 4-pipe system shall be capable of pro-
viding sequenced heating and cooling.
K. Electrical Requirements:
Standard unit shall operate on 115-v, single-phase,
60-Hz electric power, and all exposed wiring shall be
in a flexible conduit.
L. Motor(s):
Fan motors shall be 3-speed permanent split capaci-
tor type, 115 volts, with sleeve type bearings and
oversized oil reservoirs. Motor shall have thermal
overload protection with automatic reset and be
connected with quick connect electrical plug.
M. Special Features:
Certain standard features are not applicable when
the features designated by * are specified. See
your local Carrier Sales Office for amending
specifications.
* 1. Unit coil(s) shall be equipped with automatic air
vents.
* 2. Unit shall be equipped with a 3-row, 4-row or
6-row cooling coil for installation in a 2-pipe
chilled water system or direct expansion
(DX R-410A) system.
* 3. For installation in a 4-pipe chilled water system
or direct expansion (DX R-410A) system, unit
shall be equipped with either a 3-row cooling/
1-row heating split circuit, or 3/2 split circuit or
4/1 split circuit, or a 4/2 split circuit or a 6/1
split circuit (except 42DD) as required.
* 4. Fan motor(s) shall be permanent split capacitor
type, 208, 230, or 277 volts for low-static
applications (42DF) or 208, 230 or 277 volts
for high-static applications (42DA, DC, DD,
and DE). 220-volt fan motor shall be available
for 50 Hz applications.
* 5. Electric Heat:
a. Unit shall be equipped with electric resis-
tance strip heaters mounted on the entering
air side of the water coil.
b. Heaters shall include automatic reset high
limit cutout, contactor, factory-furnished
junction box and fuse to protect the motor.
c. Heaters shall be single-stage, single-phase,
120, 208, 220, 240 or 277 volts, for 50 Hz
or 60 Hz applications. Capacity shall be as
shown on the equipment schedule.
d. Control circuit for single power source con-
nection is available and must be used when
motors and heaters are of the same voltage.
* 6. Filter track and cleanable filter shall be installed
in the plenum (42DC, DD, and DE only).
7. Drain pan shall include a second drain connec-
tion located above the main drain connection to
act as an indicator that the main drain is
plugged.
8. Removable drain pan extension (drip lip) shall
be available for field installation under electric
water valves.
9. Six-in. diameter outside air opening with duct
collar shall be provided to duct outside ventila-
tion air to unit, with or without manual outdoor
air damper. (Special quote needed.)
10. Balancing and combination balance and stop
(ball) and flow control valves shall be factory fur-
nished and installed as indicated on the equip-
ment drawings.
11. Motorized 2-way and 3-way valves shall be
wired to the unit. In order to prevent shipping
damage, they shall be factory assembled in the
valve package. The valve packages shall termi-
nate with belled ends or unions for field attach-
ment to the coil.
12. Heating and/or cooling thermostat (SPDT)
shall be factory furnished for field installation
(2-pipe system).
13. Automatic changeover device(s) shall be factory
wired for field installation on supply piping
(2-pipe system).
14. Sequenced heating and cooling wall thermostat
shall be factory furnished for field installation
(4-pipe system)
15. Cabinet of 42DF unit shall be painted with the
color specified on the equipment schedule.
16. A stainless steel drain pan shall be available for
factory installation.
17. Factory-installed insulation options shall include
foil faced fiberglass or closed cell insulation.
18. Control Options:
a. 3-speed, 4-position manual fan switch on a
wall plate for field-mounting.
b. Factory-installed 24-v transformer and relay
board for use, with 24-v controls by others.
c. Carrier's Debonair
grammable or non-programmable thermo-
stat, including
transformer, relay board, and changeover
sensors, as required. Provides automatic fan
speed control based on demand.
d. Factory-Installed Carrier Fan Coil Open
Controller: BACnet based communicating
controller with pre-programmed control
algorithms; including factory-installed 24-v
transformer, relay board, supply air sensor,
return air sensor and changeover sensor (as
required). Provides automatic fan speed con-
trol based on demand.
® 24-v digital display pro-
factory-installed 24-v
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