Installation Recommendations; Mounting Vertical Units; Mounting Horizontal Units - Carrier GC Series Installation Instructions Manual

INSTALLATION RECOMMENDATIONS

The Water- -to- -Air Heat Pumps are designed to operate with
entering fluid temperature between 20_F to 90_F in the heating
mode and between 30_F to 120_F in the cooling mode.
NOTE: 50_ minimum Entering Water Temperature (EWT) is
recommended for well water applications with sufficient water
flow to prevent freezing. Antifreeze solution is required for all
closed loop applications or EWT less than 45_. Cooling
Tower/Boiler and Geothermal applications should have sufficient
antifreeze solution to protect against extreme conditions and
equipment failure. Frozen water coils are not covered under
warranty. Other equivalent methods of temperature control are
acceptable.
Check Equipment and Job Site
Moving and Storage
If the equipment is not needed for immediate installation upon its
arrival at the job site, it should be left in its shipping carton and
stored in a clean, dry area. Units must only be stored or moved in
the normal upright position as indicated by the "UP" arrows on
each carton at all times.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
If unit stacking is required for storage, stack units as follows:
Do not stack units larger than 6 tons!
Vertical units: less than 6 tons, no more than two high.
Horizontals units: less than 6 tons, no more than three high.
Inspect Equipment
Be certain to inspect all cartons or crates on each unit as received at
the job site before signing the freight bill. Verify that all items have
been received and that there are no visible damages; note any
shortages or damages on all copies of the freight bill. In the event
of damage or shortage, remember that the purchaser is responsible
for filing the necessary claims with the carrier. Concealed damages
not discovered until after removing the units from the packaging
must be reported to the carrier within 24 hours of receipt.
Location / Clearance
Locate the unit in an indoor area that allows easy removal of the
filter and access panels, and has enough room for service personnel
to perform maintenance or repair. For maintenance and
serviceability, a clearance of 2ft (.61 m) minimum around the unit
is recommended.
Provide sufficient room to make fluid, electrical, and duct
connection(s). If the unit is located in a confined space such as a
closet, provisions must be made for return air to freely enter the
face of unit's air coil. On horizontal units, allow adequate room
below the unit for a condensate drain trap and do not locate the unit
above supply piping.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
These units are not approved for outdoor installation;
therefore, they must be installed inside the structure being
conditioned. Do not locate in areas that are subject to
freezing.

MOUNTING VERTICAL UNITS

Vertical units should be mounted level on a vibration absorbing
pad slightly larger than the base to minimize vibration transmission
to the building structure. It is not necessary to anchor the unit to the
floor. See Fig. 4.
NOTE: The condensate drain pan is internally sloped. There is no
internal P- -trap. An external trap is required.
Fig. 4 - - Vibration Absorbing Pad

MOUNTING HORIZONTAL UNITS

While horizontal units may be installed on any level surface strong
enough to hold their weight, they are typically suspended above a
ceiling by threaded rods. The manufacturer recommends these be
attached to the unit corners by hanger bracket kits. The rods must
be securely anchored to the ceiling. Refer to the hanging bracket
assembly and installation instructions for details.
IMPORTANT: Horizontal units installed above the ceiling
must conform to all local codes. An auxiliary drain pan, if
required by code, should be at least four inches larger than the
bottom of the heat pump.
Plumbing connected to the heat pump must not come in direct
contact with joists, trusses, walls, etc. Some applications require an
attic floor installation of the horizontal unit. In this case, the unit
should be set in a full size secondary drain pan on top of a
vibration absorbing mesh.
The Secondary drain pan prevents possible condensate overflow or
water leakage damage to the ceiling.
The secondary drain pan is usually placed on a plywood base
isolated from the ceiling joists by additional layers of vibration
absorbing mesh.
In both cases, a 3/4"drain connected to this secondary pan should
be run to an eave at a location that will be noticeable. If the unit is
located in a crawl space, the bottom of the unit must be at least 4"
above grade to prevent flooding of the electrical parts due to heavy
rains.
NOTE: HZ unit condensate drain pan is NOT internally sloped.
IMPORTANT: Horizontal (HZ) units must be installed pitched
toward the Condensate Drain Connection 1/8" per foot.
6
VIBRATION PAD
FULL SIZE
A14117