Carrier AQUAZONE 50RHC006-060 Series Product Data page 3

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, hori-
zontal 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 and requires
minimal installation. All units are pre-
wired and factory charged with refrig-
erant. Horizontal units include factory-
installed hangar isolation brackets. Ver-
tical units have an internally trapped
condensate drain to reduce labor asso-
ciated with installing an external trap
for each unit. Water connections (FPT)
and condensate drains (FPT) are
anchored securely to the unit cabinet.
Simple maintenance and
serviceability
The Aquazone WSHP units are con-
structed to provide easy maintenance.
All units allow access to the compres-
sor section from 3 sides and have large
removable panels for easy access. Ad-
ditional panels allow access to 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 come with perma-
nently lubricated bearings for worry-
free performance. Blower inlet rings
allow blower wheel removal without
having to remove the housing or
ductwork connections.
Electrical disconnection of the blow-
er motor and control box is easily ac-
complished via 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 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 digi-
tal control (DDC) applications including
the Carrier Comfort Network® (CCN)
and open protocol systems.
Carrier's Aquazone standard unit
solid-state control system, the Com-
plete C, provides control of the unit
compressor, reversing valve, fan, safety
features, and troubleshooting fault indi-
cation features. The Complete C con-
trol 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 assists in accom-
modating accessory loads.
Anti-short cycle 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 ensures a ran-
dom delay in energizing each different
WSHP unit. This option minimizes
peak electrical demand during start-up
from different operating modes or after
building power outages.
High and low pressure refrigerant
protection safeguards against unreli-
able unit operation and prevents refrig-
erant from leaking.
Condensate overflow sensor is an
electronic sensor mounted to the drain
pan. When condensate pan liquid
reaches an unacceptable level, the unit
is automatically deactivated and placed
in a lockout condition. The sensor
recognizes 30 continuous seconds of
overflow as a fault condition.
High and low voltage protection
provides safety protection from exces-
sive or low voltage conditions.
Automatic intelligent reset will
automatically restart unit 5 minutes
after shutdown if the fault has cleared.
Should a fault occur 3 times sequential-
ly, lockout will occur.
Accessory output output (24 v) is
provided to cycle a motorized water
valve or damper actuator with com-
pressor in applications such as variable
speed pumping arrangements.
Performance Monitor (PM) is a
unique feature that monitors water
temperatures to warn when the heat
pump is operating inefficiently or be-
yond typical operating range. Field
selectable switch initiates a warning
code on the unit display.
Water coil freeze protection (se-
lectable for water or antifreeze)
provides a field selectable switch for
water and water/glycol solution sys-
tems which initiates a fault when tem-
peratures exceed the selected limit for
30 continuous seconds.
Air coil freeze protection (check
filter operation) provides a field se-
lectable switch for assessing excessive
filter pressure drop. The switch ini-
tiates a fault when temperatures ex-
ceed the selected limit for 30 continu-
ous seconds.
Alarm relay setting is a selectable
24 v or pilot duty dry contact for acti-
vating a remote alarm.
Electric heat option is an output
provided on the controller for operat-
ing two stages of emergency electric
heat.
Service Test mode with diagnostic
LED (light-emitting diode) allows
service personnel to check the opera-
tion of the WSHP and control system
efficiently. Upon entering Test mode,
time delays speed up, and the Status
LED flashes a code to indicate the
last fault experienced. This mode pro-
vides easy fault diagnosis; based on the
fault code that the status LED flashes,
Carrier troubleshooting tables provide
easy reference to typical problems.
LED visual output indicates high
pressure, low pressure, low voltage,
high voltage, air/water freeze protec-
tion, condensate overflow, and control
status via a LED panel.
Carrier PremierLink™ control-
ler adds reliability, efficiency,
and simplification
The PremierLink direct digital control-
ler can be ordered as a factory-
installed option. Designed and manu-
factured exclusively by Carrier, the
controller can actively monitor and
control all modes of operation as well
as monitor the following diagnostics
and features: unit number, zone tem-
perature, zone set point, zone
humidity set point, discharge air tem-
peratures, fan status, stages of heating,
stages of cooling, outdoor-air tempera-
ture, leaving-air temperature, leaving
water temperature, alarm status, and
alarm lockout condition.
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