Carrier 42C Series Product Data page 133

standard drain pan is stainless steel, externally
coated with a 2-part closed cell foam insulation.
H. Filter:
A filter track complete with 1-in. non-woven syn-
thetic throwaway filter shall be installed in the unit.
Optional filters are available.
I. Fan:
1. Centrifugal fan shall be directly driven by an
electric motor.
2. Fan wheel shall be double-width type with
forward-curved blades and shall be statically and
dynamically balanced.
3. Fan wheel and scroll shall be constructed of gal-
vanized steel.
4. Fans shall be easily removable.
J. Coil:
1. Standard base unit shall be equipped with a
3-row coil for installation in a 2-pipe system.
Additional coil depth and circuiting shall be pro-
vided for installation in a 4-pipe system as
described in the Special Features section.
2. All coils shall have
aluminum fins with 14 fins per inch spacing;
coil fins are mechanically bonded to copper
tubes. The copper tubes comply with the
ASTM (American Society for Testing and Mate-
rials) B-75. The fin thickness is 0.0045-in. and
tube thickness is 0.016 inches. All coils are
tested with air at 300 psig under water.
3. Coil shall be equipped with a manual air vent
and shall be piped to supply and return
risers with valves as specified on the equipment
drawings. For 42SU and 42SM units, coil is not
piped to risers, which shall be shipped sepa-
rately.
4. Piping between hot water coil and risers shall
include loops to compensate for maximum riser
expansion and contraction of 1
42SG, 42SH, and 42SJ units. On 42SU and
42SM units, a flexible hose is included.
K. Flexible Hose for 42SU and 42SM Fan Coil:
1. Construction:
a. Hose shall have an external component con-
structed of stainless steel 304L wire braid
with an internal core tube of EPDM rubber.
b. Hoses shall have 37.5 degree female swivel
crimp on fittings on either end for attach-
ment to brass
c. Hoses shall be assembled with a patented
process which bonds the tube to the outer
braid, minimizing the possibility of the hose
assembly kinking during installation.
d. All hoses shall be equipped with perma-
nently installed (crimped) end fittings to elim-
inate the possibility of bands or clamps
loosening and creating leaks.
1 / -in. copper tubes and
2
1
/ -in. on
2
1 / -in. male adapters.
2
e. Plated steel hose swivel fittings and brass
adapters shall reduce the possibility of over-
torquing.
2. Regulations:
a. Hoses shall meet UL-94 VO rating listed as
Underwriters Laboratories Yellow Card num-
ber QMFZ2.E80017.
b. The 1 / -in. hoses shall be rated for a maxi-
2
mum working pressure of 400 psig and
burst pressure of 1600 psig.
c. Temperature range for hose assemblies shall
be –40 to 200 F.
d. Hoses shall be field connected.
e. Torque specifications for hose connections
shall be 350 in.-lb +10/-0 in.-lb to prevent
leaks.
L. Risers:
1. Standard factory-furnished and installed risers
shall be up to 119 in. long with 3-in. belled
ends at the top for floor to floor dimensions up
to 117 in. For floor to floor dimensions greater
than 117 in., 104 in. risers will be provided
with riser extensions up to 24 in. long.
2. Supply and return risers shall be
1
2 / -in. diameter.
2
3. Risers shall be Type M or L copper insulated
with 1 / -in. or 3 /
2 4
4. Optional riser chase on 42SGA for application
of wall board directly to the chase.
M. Valves:
The factory furnished or installed risers shall have
ball valves except on the drain riser.
N. Controls and Safeties:
1. Controls:
Unit shall come with no controls unless control
package is selected.
2. Safeties:
Unit fan motor shall be equipped with thermal
overload protection with automatic reset.
O. 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.
P. Electrical Requirements:
Standard unit shall operate on 115-v, single-phase,
60 Hz electrical power supply. All externally
exposed wiring shall be in flexible conduit.
Q. Motor:
1. Standard fan motor shall be 3-speed, 115-v,
single-phase, 60 Hz, permanent split capacitor
type, factory mounted on the blower housing.
3
/ -in. to
4
-in. thick closed cell insulation.
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