Carrier 50ZP024 Installation Instructions Manual Download

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CUT HAZARD

Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care

and wear appropriate clothing.

CAUTION

These instructions cover minimum requirements and conform to

existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,

especially those that may not have kept up with changing
residential construction practices. We require these instructions as a

minimum for a safe installation.
GENERAL — 50ZP cooling units are fully self--contained and

designed for outdoor installation. See Fig. 1. As shown in Fig. 2--4,

units are shipped in a horizontal--discharge configuration for
installation on a ground--level slab. All units can be

field--converted to downflow discharge configurations for rooftop
applications with a field--supplied plenum

RECEIVING AND INSTALLATION

Step 1 — Check Equipment

IDENTIFY UNIT — The unit model number and serial number
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 papers 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 packages 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. (51 mm) beyond the unit casing on the 2
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. (152 mm) 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 in. (6 mm). This is necessary

for the unit drain to function properly.

Step 3 — Provide Clearances

The required minimum service clearances and clearances to
combustibles are shown in Fig. 2--4. Adequate ventilation and

condenser air must be provided.
The condenser fan pulls air through the condenser coil and

discharges it through the fan on the top cover. Be sure that the fan

discharge does not recirculate to the condenser coil. Do not locate
the unit in either a corner or under an overhead obstruction. The

minimum clearance under a partial overhang (such as a normal
house overhang) is 48 in. (1219 mm) above the unit top. The

maximum horizontal extension of a partial overhang must not

exceed 48 in. (1219 mm).
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 position 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 design and installation of the duct system must be in
accordance with:

the standards of the NFPA (National Fire Protection Association)

for installation of nonresidence--type air conditioning and

ventilating systems;

NFPA90A or residence--type, NFPA90B; and/or local codes and

residence--type, NFPA 90B;

and/or local codes and ordinances.

Select and size ductwork, supply--air registers and return--air grilles

according to ASHRAE (American Society of Heating,
Refrigeration, and Air Conditioning Engineers) recommendations.
Use the duct flanges provided on the supply-- and return--air

openings on the side of the unit. See Fig. 2--4 for connection sizes
and locations. The 14--in. (356 mm) round duct collars (size

024--048 units) are shipped inside the unit attached to the indoor
blower. They are field--installed and must be removed from the

indoor cavity prior to start--up, even if they are not used for
installation.
INSTALL FLANGES FOR DUCTWORK CONNECTIONS

(50ZP060 ONLY) — The 50ZP060 units are shipped with flanges
which must be field--installed on the unit.
To install unit flanges:

1. Five pieces of flange are shipped on the return--air opening

of the unit. Remove the flanges from the shipping position.
See Fig. 5. Screws are field--supplied.

2. One piece of flange is used as it is shipped (straight). Bend

the other 4 pieces at right angles.

3. Install the straight flange on the right side of the return--air

opening in holes provided. See Fig. 6. Flanges should stick
out from unit to allow for connection of ductwork.

4. Install 2 hand--formed flanges onto return air opening in

holes provided to form a rectangle around the return air