York HA090 Technical Manual page 137

246668-YTG-B-0906
NOMENCLATURE
ACCESSORIES-FIELD INSTALLED (CONT.)
HOT WATER COILS
These drainable coils have 2 rows of 1/2" copper tubes, 12
aluminum fins per inch, a casing that is finished to match the
exterior of the basic unit, but no water control valve. The coils
slide out of their casings for easy field installation. They
should be mounted over the return air opening on 5, 7-1/2
and 10-ton units—between the unit coil and blower sections
on 15-ton units.
STEAM COILS
These non-freeze coils have 1 row of 1" copper tubes, a 5/8"
copper tube inside each 1" tube to distribute the steam evenly
across the entire length of the coil, 8 aluminum fins per inch,
a casing that is finished to match the exterior of the basic unit,
Unitary Products Group
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but no steam control valve. The coils slide out of their casings
for easy field installation and are pitched in their casings to
facilitate condensate drainage. They should be mounted over
the return air opening on 5, 7-1/2 and 10-ton units—between
the unit coil and blower sections on 15-ton units.
SUSPENSION KIT
Suspension kit 1HH0451 is available for 15-ton units installed
horizontally. The accessory includes two channel iron sup-
ports and the hardware to secure them to the top of the unit.
The hanger rods must be supplied by the field.
THERMOSTATS
Wall-mounted thermostats and subbases (24-volt) with sys-
tem and fan switches are available to control the operation of
these split system air conditioners.
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