Guide Specifications — 42S Series - Carrier 42C Series Product Data

Guide specifications — 42S series (cont)
I. Risers:
1. Standard factory-furnished and installed risers
shall be 104 in. long with 3-in. belled ends at
the top such that only one sweat connection
shall be required at each floor to join one riser
to another.
2. Risers shall be Type M copper insulated with
1 / -in. thick synthetic rubber.
2
3. Standard supply and return risers shall be
1 1 / in. diameter, drain riser shall be 1 in. diam-
4
eter.
J. Valves:
The factory furnished and installed piping shall
include two ball valves and one 2-way motorized
valve. The ball valves shall be rated at 150 psig.
K. Controls and Safeties:
1. Controls:
a. Standard controls for a 2-pipe system shall
consist of a 3-speed fan switch, heating/
cooling thermostat (SPDT) and an automatic
changeover device.
b. Unit controls shall be mounted behind the
access door on the return air panel.
2. Safeties:
Unit fan motor shall be equipped with integral
motor protection.
L. Operating Characteristics:
1. A unit with a conventional coil, installed in a
2-pipe system, shall be capable of providing
heating or cooling as determined by the operat-
ing mode of the central water supply system.
2. A unit with a row-split coil, installed in a 4-pipe
system, shall be capable of providing sequenced
heating and cooling.
M. Electrical Requirements
Standard unit shall operate on 115-v, single phase,
60-Hz electrical power supply.
N. Motor:
1. Fan motor shall be 3-speed, 115-v, single
phase, 60-Hz, permanent split capacitor type,
factory mounted on the blower housing.
2. Bearings shall be of the sleeve type with oil
tubes and oversized oil reservoir to assure
positive lubrication
requirements.
O. Special Features:
Certain standard features are not applicable when
the features designated by * are specified.
* 1. Unit coil shall be equipped with automatic air
vents.
* 2. Unit shall be equipped with a 4-row coil for
installation in a 2-pipe system.
110
and minimum service
* 3. For installation in a 4-pipe system, unit shall be
equipped with:
a. A 3/1, 3/2 or 4/1 row-split coil, as shown
on equipment drawings for cooling and
heating.
b. Two each 1 1 /
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return risers and one 1 in. diameter drain
riser.
c. Two gate valves, 2 combination balance and
stop valves and two 2-way motorized valves.
The gate and combination valves shall be
rated at 150 psig.
d. Three-speed fan switch and a sequenced
heating and cooling thermostat.
* 4. Unit shall be equipped with 3-way motorized
valves.
* 5. Supply and return risers shall be 1 in., 1
1
2 in. or 2 / in. diameter as shown on the
2
equipment drawings.
* 6. Floor-to-floor height of risers shall be as speci-
fied on the equipment drawings.
* 7. Supply and return risers shall be Type L
copper.
* 8. Drain riser shall be Type DWV copper.
* 9. Insulation on risers shall be
thetic rubber.
*10. Unit shall be equipped with a separate reverse-
return riser with size as shown on the equip-
ment drawings.
11. Automatic balancing check valve(s) shall be
factory installed as shown on the equipment
drawings.
*12. Motor shall be 3-speed, single phase, 60 Hz
permanent split capacitor type for 208, 230 or
277 volts or 50 Hz permanent split capacitor
type for 220 volts.
*13. Double-deflection supply grille(s) shall be fin-
ished with white primer or Arctic White paint.
Additional double-deflection supply grille(s) shall
be furnished for field installation.
14. Ceiling skirts for exposed stack units shall be
provided for field trim and installation.
15. A fresh-air opening shall be provided as shown
on the equipment drawings.
*16. One-in. thick cleanable filters shall be installed
in the filter track.
17. Unit shall be equipped with nichrome wire elec-
tric strip heaters for total or auxiliary electric
heat as specified on the equipment schedule.
a. Heaters shall be protected by an automatic
reset safety cutout switch and a fusible link.
b. Heater capacity shall be as specified on the
equipment schedule.
c. Heaters shall be single phase, 60 Hz for
120, 208, 240 or 277 volts as specified on
the equipment schedule.
in. diameter supply and
1
/ in.,
2
3
/ -in. thick syn-
4