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SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils and filters and replacing filters. All
other operations should be performed by trained service per-
sonnel. When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply.
Improper installation, adjustment, alteration, service, main-
tenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or a local
distributor or branch for information or assistance. The
qualified installer or agency must use factory-authorized kits or
accessories when modifying this product. Refer to the individ-
ual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult
local building codes and the National Electrical Code (NEC)
for special installation requirements.
Understand the signal words — DANGER, WARNING,
and CAUTION. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies hazards that could result in personal inju-
ry or death. CAUTION is used to identify unsafe practices,
which would result in minor personal injury or product and
property damage.
Recognize safety information. This is the safety-alert
symbol ( ). When this symbol is displayed on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
GENERAL
This installation and start-up instructions literature is for
Aquazone™ single-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. Aquazone
WSHPs are available in the following unit configurations:
• 50PSH unit with horizontal airflow and right, left or back
discharge
• 50PSV unit with vertical airflow and top discharge
• 50PSD unit with vertical airflow and bottom discharge
(downflow)
INSTALLATION
Step 1 — Check Jobsite —
Installation, operation and
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.
HORIZONTAL UNIT (50PSH) —
Horizontal units are design-
ed for indoor installation only. Be sure to allow adequate space
around the unit for servicing. Refer to Fig. 1 for an illustration of
a typical horizontal installation. See Fig. 2 for overall unit
dimensions.
VERTICAL AND DOWNFLOW UNITS (50PSV, PSD) —
Vertical units are designed for indoor installations. While verti-
cal 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
and 4 for overall dimensions. Refer to Fig. 5 for an example of
a typical vertical installation. Refer to Fig. 6 for a sample
downflow installation.
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.
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.
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.
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 becomes clogged with construction dirt and
debris which may cause system damage.