Product data

3
E-coated (electro-coated) air
coils
The 50P1H and P1V units are avail-
able with an optional e-coated air coil.
This electro-coating process will pro-
vide years of protection against
corrosion from airborne chemicals.
Modern building materials, such as
countertops, floor coverings, paints
and other materials, can “outgas”
chemicals into the indoor air. Some of
these chemicals are suspected of
contributing to corrosion in the air
coils found in both traditional and
geothermal heating and cooling
equipment. Corrosion often results in
refrigerant leaks and eventual failure of
the air coil, costing hundreds of dollars
to replace. Studies have also shown
that these air coil coatings improve
moisture shedding and therefore,
improve a units moisture removal
capability resulting in a more comfort-
able indoor environment. The 50P1H
and P1V units assure both maximum
air coil life and comfort.
Design flexibility
Airflow configurations for horizontal
units are available in four patterns
including left or right return, and left,
right, or back discharge. Horizontal
units are field convertible from left or
right discharge to back discharge. Ver-
tical units are available in three airflow
patterns including top discharge with
right or left return. Standard entering
water temperature is between 60 and
95 F. Extended entering water temper-
ature range between 20 and 120
F of-
fers maximum design flexibility for all
applications. Water flow rates as low as
1.5 gpm per ton assist with selection
from a various range of circulating
pumps. Factory-installed options are
offered to meet specific design
requirements.
Safe, reliable operation
Standard safety features for the refrig-
erant circuit include high-pressure
switch, low-pressure sensor to detect
loss of refrigerant, and low air temper-
ature sensor to safeguard against freez-
ing. Equipment safety features include
water loop temperature monitoring,
voltage protection, water coil freeze
protection, and standard electronic
condensate overflow shutdown. All
safety features are tested and run at the
factory to assure proper operation of
all components and safety switches.
All components are carefully de-
signed and selected for endurance
durability, and carefree day-to-day
operation.
The Aquazone™ unit is shipped to
provide internal and external equip-
ment protection. Shipping supports
are placed under the blower housing
and compressor feet. In addition,
horizontal and vertical units are both
mounted on oversized pallets with lag
bolts for sturdiness and maximum pro-
tection during transit.
Ease of installation
The Aquazone unit is packaged for
simple low cost handling, with minimal
time required for installation. All units
are pre-wired and factory charged with
refrigerant. Horizontal units are provid-
ed with factory-installed hangar isola-
tion brackets. Vertical units are provid-
ed with an internally trapped conden-
sate drain to reduce labor associated
with installing an external trap for each
unit. Water connections (FPT) and con-
densate drains (FPT) are anchored
securely to the unit cabinet, eliminating
the need for backup wrenches.
Simple maintenance and
serviceability
The Aquazone water source heat
pump (WSHP) units are constructed to
provide ease of maintenance. Units
allow access to the compressor section
from 3 sides and have large removable
panels for easy access. Additional pan-
els are provided to access the blower
and control box sections.
The blower housing assembly can
be serviced without disconnecting duct-
work from the dedicated blower access
panel. Blower units are provided with
permanently lubricated bearings for
worry-free performance. Blower inlet
rings allow removal of the blower
wheel without having to remove the
housing or ductwork connections.
Electrical disconnection of the
blower motor and control box is easily
accomplished from quick disconnects
on each component.
Easy removal of the control box
from the unit provides access to all
refrigeration components.
The refrigeration circuit is easily
tested and serviced through the use of
high and low pressure ports integral to
the refrigeration circuit.
Maximum control flexibility
Aquazone water source heat pumps
provide reliable control operation
using a standard microprocessor board
with flexible alternatives for many
direct digital controls (DDC) applica-
tions including the Carrier Comfort
Network
®
(CCN) controls and open
protocol systems.
The Aquazone standard unit solid-
state control system, the Complete C,
provides control of the unit compres-
sor, reversing valve, fan, safety fea-
tures, and troubleshooting fault indica-
tion features. The Complete C control
system is one of the most user friendly,
low cost, and advanced control boards
found in the WSHP industry. Many
features are field selectable to provide
the ultimate in field installation flexibili-
ty. The overall features of this standard
control system include:
50-va transformer — The transformer
assists in accommodating accessory loads.
Anti-short cycle timer — The timer
provides a minimum off time to prevent
the unit from short cycling. The
5-minute timer energizes when the
compressor is deenergized, resulting in
a 5-minute delay before the unit can be
restarted.
Random start relay — The random
start relay ensures a random delay in
energizing each different WSHP unit.
This option minimizes peak electrical
demand during start-up from different
operating modes or after building pow-
er outages.
High and low pressure refrigerant
protection — This protection safe-
guards against unreliable unit opera-
tion and provides a warning for
refrigerant leaking.
Condensate overflow sensor —
The electronic sensor is mounted to
the drain pan. When condensate pan
liquid reaches an unacceptable level,
unit is automatically deactivated and
placed in a lockout condition. Thirty
continuous seconds of overflow is rec-
ognized as a fault by the sensor.
High and low voltage protection
— Safety protection for excessive or
low voltage conditions is included.
Automatic intelligent reset — The
unit will automatically restart 5 minutes
after shutdown if the fault has cleared.
Should a fault occur 3 times sequential-
ly, lockout will occur.