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WARNING
Electrical shock can cause personal injury or death. Before
installing or servicing system, always turn off main power
to system. There may be more than one disconnect switch.
Turn off accessory heater power if applicable.
GENERAL
This installation and start-up instructions literature is for
Aquazone™ two-stage water source heat pump systems.
Water source heat pumps (WSHPs) are single-package hori-
zontally and vertically mounted units with electronic controls
designed for year-round cooling and heating.
IMPORTANT: The installation of water source heat pump
units and all associated components, parts, and accessories
which make up the installation shall be in accordance with
the regulations of ALL authorities having jurisdiction and
MUST conform to all applicable codes. It is the responsi-
bility of the installing contractor to determine and comply
with ALL applicable codes and regulations.
INSTALLATION
Step 1 — Check Jobsite —
maintenance instructions are provided with each unit. Before
unit start-up, read all manuals and become familiar with the
unit and its operation. Thoroughly check out the system before
operation. Complete the inspections and instructions listed
below to prepare a unit for installation. See Table 1 for unit
physical data.
IMPORTANT: This equipment is designed for indoor
installation ONLY. Extreme variations in temperature,
humidity and corrosive water or air will adversely affect
the unit performance, reliability and service life.
HORIZONTAL UNIT (50PTH) — Horizontal
designed for indoor installation only. Be sure to allow adequate
space around the unit for servicing. See Fig. 1 and 2 for overall
unit dimensions.
VERTICAL UNITS (50PTV) — Vertical units are designed
for indoor installations. While vertical units are typically
installed in a floor-level closet or a small mechanical room, the
unit access guidelines for these units are very similar to those
described for horizontal units. See Fig. 3 for overall dimen-
sions.
CAUTION
To avoid equipment damage, do not use these units as a
source of heating or cooling during the construction pro-
cess. The mechanical components and filters used in these
units quickly become clogged with construction dirt and
debris which may cause system damage.
Step 2 — Check Unit —
the jobsite, carefully check the shipment against the bill of
lading. Make sure all units have been received. Inspect the car-
ton or crating of each unit, and inspect each unit for damage.
Ensure the shipping company makes proper notation of any
shortages or damage on all copies of the freight bill. Concealed
damage not discovered during unloading must be reported to
the shipping company within 15 days of receipt of shipment.
NOTE: It is the responsibility of the purchaser to file all neces-
sary claims with the shipping company.
Installation, operation and
units
are
Upon receipt of shipment at
1. Be sure that the location chosen for unit installation pro-
vides ambient temperatures maintained above freezing.
2. Be sure the installation location is isolated from sleeping
areas, private offices and other acoustically sensitive
spaces.
3. Be sure unit is mounted at a height sufficient to provide
an adequate slope of the condensate lines. If an appropri-
ate slope cannot be achieved, a field-supplied condensate
pump may be required.
4. On horizontal units, allow adequate room below the unit
for condensate drain trap and do not locate the unit above
supply piping.
5. Provide sufficient space for duct connection. Do not al-
low the weight of the ductwork to rest on the unit.
6. Provide adequate clearance for filter replacement and
drain pan cleaning. Do not allow piping, conduit, etc. to
block filter access.
7. Provide sufficient access to allow maintenance and
servicing of the fan and fan motor, compressor and coils.
Removal of the entire unit from the closet should not be
necessary.
8. Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be sufficient to allow
return air to freely enter the space.
9. Provide ready access to water valves and fittings, and
screwdriver access to unit side panels, discharge collar,
and all electrical connections.
10. Where access to side panels is limited, pre-removal of the
control box side mounting screws may be necessary for
future servicing.
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. If unit stacking is
required, stack units as follows: vertical units less than 6 tons,
no more than two high; horizontal units less than 6 tons, no
more than three high. Do not stack units larger than 6 tons.
PROTECTION — Once the units are properly positioned on
the jobsite, cover them with either a shipping carton, vinyl film,
or an equivalent protective covering. Cap open ends of pipes
stored on the jobsite. This precaution is especially important in
areas where painting, plastering, or spraying of fireproof mate-
rial, etc. is not yet complete. Foreign material that accumulates
within the units can prevent proper start-up and necessitate
costly clean-up operations.
Before installing any of the system components, be sure to
examine each pipe, fitting, and valve, and remove any dirt or
foreign material found in or on these components.
DO NOT store or install units in corrosive environments or
in locations subject to temperature or humidity extremes
(e.g., attics, garages, rooftops, etc.). Corrosive conditions
and high temperature or humidity can significantly reduce
performance, reliability, and service life. Always move
units in an upright position. Tilting units on their sides may
cause equipment damage.
2
CAUTION
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