Carrier 50ZH024-060 - Manual (Page 5)

RECEIVING AND INSTALLATION
Step 1 — Check Equipment
IDENTIFY UNIT — The unit model number and serial num-
ber are stamped on the unit identification plate. Check this
information against shipping papers.
INSPECT SHIPMENT — Inspect for shipping damage while
unit is still on shipping pallet. If unit appears to be damaged
or is torn loose from its securing points, have it examined by
transportation inspectors before removal. Forward claim pa-
pers directly to transportation company. Manufacturer is not
responsible for any damage incurred in transit.
Check all items against shipping list. Immediately notify
the nearest Carrier Air Conditioning office if any item is
missing.
To prevent loss or damage, leave all parts in original pack-
ages until installation.
Step 2 — Provide Unit Support
SLAB MOUNT — Place the unit on a rigid, level surface,
suitable to support the unit weight. The flat surface should
extend approximately 2-in. beyond the unit casing on the 2
outdoor coil sides. The duct connection side and condensate
drain connection sides should be flush with the edge of the
flat surface. A concrete pad or a suitable fiberglass mounting
pad is recommended.
A 6-in. wide gravel apron should be used around the flat
surface to prevent airflow blockage by grass or shrubs. Do
not secure the unit to the flat surface except where required
by local codes.
The unit should be level to within 1 ⁄
4
inch. This is nec-
essary for the unit drain to function properly.
Step 3 — Provide Clearances — The required mini-
mum service clearances and clearances to combustibles are
shown in Fig. 2-4. Adequate ventilation and outdoor air must
be provided.
The outdoor fan pulls air through the outdoor coil and dis-
charges it through the fan on the top cover. Be sure that the
fan discharge does not recirculate to the outdoor coil. Do not
locate the unit in either a corner or under an overhead ob-
struction. The minimum clearance under a partial overhang
(such as a normal house overhang) is 48 in. above the unit
top. The maximum horizontal extension of a partial over-
hang must not exceed 48 inches.
Do not restrict outdoor airflow. An air restriction at ei-
ther the outdoor-air inlet or the fan discharge can be harm-
ful to compressor life.
Do not place the unit where water, ice, or snow from
an overhang or roof will damage or flood the unit. The unit
may be installed on wood flooring or on Class A, B, or C
roof covering materials.
Step 4 — Place Unit — Unit can be moved with the
handholds provided in the unit basepan. Refer to Table 1 for
operating weights. Use extreme caution to prevent damage
when moving the unit. Unit must remain in an upright po-
sition during all moving operations. The unit must be level
for proper condensate drainage; the ground-level pad must
be level before setting the unit in place. When a field-
fabricated support is used, be sure that the support is level
and that it properly supports the unit.
Step 5 — Select and Install Ductwork — The de-
sign and installation of the duct system must be in accor-
dance with:
• the standards of the NFPA (National Fire Protection
Association) for installation of nonresidence-type air con-
ditioning and ventilating systems;
• NFPA 90A or residence-type, NFPA 90B; and/or local codes
and residence-type, NFPA 90B;
• and/or local codes and ordinances.
Table 1 — Physical Data
UNIT 50ZH 024 030 036 042 048 060
OPERATING WEIGHT (lb) 232 254 277 295 328 368
COMPRESSOR TYPE Scroll
REFRIGERANT R-22
Charge (lb) 4.0 5.8 5.9 9.2 10.9 11.0
REFRIGERANT METERING DEVICE Acutrol™ System
OUTDOOR COIL Copper Tubes, Aluminum Plate Fins
Rows...Fins/in. 1...17 2...17 1...17 2...17 2...17 2...17
Total Face Area (sq ft) 7.9 6.7 11.1 11.1 11.1 12.7
OUTDOOR-FAN MOTOR Propeller
Nominal Cfm 1800 2000 2600 2600 2600 3200
Nominal Rpm 825 1100 1100 1100 1100 1100
Motor Hp 1 ⁄
8 1 ⁄
4 1 ⁄
4 1 ⁄
4 1 ⁄
4 1 ⁄
2
Diameter (in.) 20 20 20 20 20 20
INDOOR COIL Copper Tubes, Aluminum Plate Fins
Rows...Fins/in. 2...15 3...15 3...15 3...15 4...15 4...15
Total Face Area (sq ft) 3.1 3.1 4.0 4.0 4.4 4.9
INDOOR-FAN MOTOR Direct Drive
Blower Motor Size (in.) 10 x 8 10 x 8 10 x 9 10 x 9 10 x 9 10 × 10
Nominal Cfm 800 1000 1200 1400 1600 2000
Rpm Range 550-1000 550-1000 800-1050 800-1050 1000-1100 950-1100
Number of Speeds 3 3 3 3 2 3
Factory Speed Setting Low Med Low Med Low Low
Motor Hp 1 ⁄
4 1 ⁄
4 1 ⁄
2 1 ⁄
2 3 ⁄
4
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CONNECTING DUCT SIZES Round Square
Supply Air (in.) 14 13.9 × 13.9
Return Air (in.) 14 13.9 × 27.8
FIELD-SUPPLIED RETURN AIR FILTER*
Throwaway (in.) 24 x 24 24 x 24 24 x 24 24 x 24 24 x 30 24 × 30
*Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration Institute) rated airflow at a
velocity of 300 ft/min for throwaway type or 450 ft/min for high capacity type. Recommended filters are 1-in. thick.
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