50ZHK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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warnings or cautions included in literature and attached to the unit.
Consult local building codes, the current editions of the National
Electrical Code (NEC) NFPA 70 and NFPA 90B-Installation Warm Air
Heating and A/C Systems (Residential). In Canada refer to the current
editions of the Canadian Electrical Code CSA C22.1.
Recognize safety information. This is the safety-alert symbol . When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury. Understand these signal words:
DANGER, WARNING, and CAUTION. These words are used with the
safety-alert symbol. DANGER identifies the most serious hazards which
will result in severe personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
Introduction
This packaged heat pump is fully self-contained and designed for
outdoor installation (See
). Standard units are shipped in a
horizontal-discharge configuration for installation on a ground-level slab
or directly on the ground if local codes permit. Standard units can be
converted to downflow (vertical) 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 printed on the unit
informative 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 anchorage, 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 equipment distribution
office if any item is missing. To prevent loss or damage, leave all parts in
original packages until installation.
Step 2 – Provide Unit Support
For hurricane tie downs, contact distributor for details and PE
(Professional Engineering) Certificate, if required.
Slab Mount
Place the unit on a solid, level concrete pad that is a minimum of 4 in.
(102 mm) thick with 2 in. (51 mm) above grade. The slab should extend
approximately 2 in. (51 mm) beyond the casing on all 4 sides of the unit.
Do not secure the unit to the slab except when required by local codes.
A 6-in. (152 mm) wide gravel apron should be used around the flat
surface to prevent airflow blockage by grass or shrubs. The unit should
be level within 1/4 in. (6 mm). This is necessary for the unit drain to
function properly.
Ground Mount
The unit may be installed either on a slab or placed directly on the
ground if local codes permit. Place the unit on level ground prepared
with gravel for condensate discharge.
Step 3 – Provide Clearances
The required minimum service clearances are shown in
-
Adequate ventilation and outdoor air must be provided.
The outdoor fan draws air through the outdoor coil and discharges it
through the top fan grille. 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 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).
IMPORTANT:
Do not restrict outdoor airflow. An air restriction at
either the outdoor-air inlet or the fan discharge may be detrimental to
compressor life.
Do not place the unit where water, ice, or snow from an overhang or roof
will damage or flood the unit. Do not install the unit on carpeting or
other combustible materials. Slab-mounted units should be at least 4 in.
(102 mm) above the highest expected water and runoff levels. Do not use
unit if it has been under water.
Step 4 – Place Unit
Unit can be moved with the rigging holds provided in the unit base.
Refer to
for operating weights. Use extreme caution to prevent
damage when moving the unit. Unit must remain in an upright position
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing or servicing system, always turn off main power to
system and install lockout tag. There may be more than one disconnect
switch. Turn off accessory heater power switch if applicable.
CAUTION
!
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 protective clothing, safety glasses and gloves when
handling parts and servicing.
WARNING
!
PERSONAL INJURY AND ENVIRONMENTAL HAZARD
Failure to relieve system pressure could result in personal injury and/or
death.
1. Relieve pressure and recover all refrigerant before servicing
existing equipment, and before final unit disposal. Use all
service ports and open all flow-control devices, including
solenoid valves.
2. Federal regulations require that you do not vent refrigerant into
the atmosphere. Recover during system repair or final unit
disposal.
WARNING
!
PERSONAL INJURY AND PROPERTY DAMAGE
HAZARD
For continued performance, reliability, and safety, the only approved
accessories and replacement parts are those specified by the equipment
manufacturer. The use of non-manufacturer approved parts and
accessories could invalidate the equipment limited warranty and result
in fire risk, equipment malfunction, and failure. Please review
manufacturer’s instructions and replacement part catalogs available
from your equipment supplier.