Carrier 50PEC09-18 Aquazone Operation manual

Copyright 2009 Carrier Corporation Form 50PEC-3PD
Single-package console water source
heat pump with self-contained line
voltage thermostats.
• Non-ozone depleting Puron
refrigerant (R-410A)
• Suitable for either geothermal or
boiler/tower applications with
operating temperature range from
20 F to 110 F.
• Thermostatic expansion valve (TXV)
• Rubber grommet mounted
compressors for quiet operation
• Sloped top cabinet
• Right or left hand piping connection
• Multiple unit-mounted and remote
thermostat options
• Adaptable cabinet and subbase
configurations
• Factory-mounted flow regulators and
control valves for easy installation
• Flexible and reliable multiple
protocol WSHP Open controller can
use BACnet™, Modbus®, N2, and
LON (with a separate card)
protocols for integrating energy
efficiency and precise unit control
Features/Benefits
Carrier’s Aquazone console
water source heat pumps are
a flexible, attractive
alternative for all finished
interior space, under-window
style installations.
Operating efficiency
Aquazone water source heat pump
(WSHP) units are designed for quality
and performance excellence over their
lifetime. Units offer standard cooling
EERs (energy efficiency ratios) up to
13.5 for boiler/tower systems and as
high as 21.3 for geothermal applica-
tions. Heating COPs (coefficients of
performance) are as high as 5.1,
among the highest in the industry.
AQUAZONE™
50PEC09-18
Water Source Heat Pumps
Console Unit
with PURON® Refrigerant (R-410A)
3/4to 11/2Nominal Tons
Product
Data
TM

2
Quiet operation
The Carrier console WSHP provides
exceptionally quiet operation for maxi-
mum comfort.
Design flexibility
Aquazone™ console WSHP units are
offered in 4 capacity sizes to meet indi-
vidual zone needs efficiently and effec-
tively. Standard and extended operat-
ing range units are available to suit a
variety of application requirements.
Safe, reliable operation
Standard safety features include: high
and low pressure monitoring and field
selectable water and air coil freeze pro-
tection sensing. All safety controls may
be reset at the thermostat. Each unit is
tested and run at the factory to ensure
proper operation of all components
and safety switches.
All components are carefully
designed and selected for endurance,
durability, and carefree day-to-day
operation.
The water-to-refrigerant heat
exchanger has copper inner and steel
outer tubing which is painted on the
outside to provide corrosion resistance
protection. Cupronickel heat exchang-
ers are available and should be used on
all open loop applications.
Units are rated and certified in ac-
cordance with ARI (Air Conditioning
and Refrigeration Institute)/ISO (Inter-
national Organization for Standardiza-
tion)/ASHRAE (American Society of
Heating, Refrigerating and Air Condi-
tioning Engineers) 13256-1 perfor-
mance standard, and are CSA (Canadi-
an Standards Association)/NRTL (Na-
tionally Recognized Testing Lab) listed.
Installation ease
The unit is packaged for simple, low
cost handling, with minimal time re-
quired for installation. The console unit
arrives at the jobsite fully assembled to
minimize installation time and reduce
installation cost. All units are pre-wired
and factory charged with Puron®re-
frigerant (R-410A).
Water connections are available in a
variety of configurations direct from
the factory. The standard configuration
is 5/8in. OD sweat connections for
maximum flexibility in the field. Both
FPT and MPT are available as factory-
installed options to improve installation
efficiency. Additionally, factory-
installed motorized water shutoff
valves are available for use on energy
conserving systems employing a
variable pumping technique.
The standard electrical connections
are made quickly and directly to a pow-
er distribution terminal block. To fur-
ther improve installation efficiency, a
fused or unfused disconnect switch as
well as a 20 amp plug and cord are
available as factory-installed options.
A 5/8in. ID vinyl condensate con-
nection is provided for connection to
the field-installed condensate line.
Compact cabinet design dimen-
sions are 12 in. deep, 48 in. wide and
24 in. tall. For flexibility, the controls
can be mounted on the top right or left
side. Additionally, the sloped top de-
sign discourages the use of the unit as
a shelf or coffee holder, preventing air
blockage and any spills from damaging
the unit.
No-fuss maintenance and
serviceability
Regular maintenance or service to the
console WSHP units require little time.
Large service access panels enable
quick inspection for problem solving
and the control box swings down for
easy access to the controls.
Fan motor sleeve bearings are per-
manently lubricated for worry-free per-
formance. If the unit requires service,
an easily removable cabinet and slide-
out fan section make access simple.
Refrigerant circuit protection is de-
signed to result in fewer service calls.
Units are equipped with easily accessi-
ble service access ports on both the
suction and the discharge refrigerant
lines for on-site testing and environ-
mentally correct refrigerant recovery.
Filter racks provide easy filter access
for cleaning.
Maximum control flexibility
Aquazone water source heat pumps
provide reliable control operation using
a standard microprocessor board.
Flexible alternatives for many direct
digital controls (DDC) applications in-
clude the Carrier Comfort Network®
(CCN) controls 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 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 flexibility. The
overall features of this standard control
system include:
50-va transformer —Assists in
accommodating 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
random delay in energizing each differ-
ent WSHP unit. This option minimizes
peak electrical demand during start-up
from different operating modes or after
building power outages.
Features/Benefits (cont)
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ARI/ISO Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-22
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23,24
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-29
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-34
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-38
Typical Control Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-46
Typical Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47,48
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-52

3
High and low pressure refrigerant
protection —Safeguards against
unreliable unit operation and prevents
refrigerant from leaking.
Condensate overflow sensor —
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 thirty continuous seconds
of overflow as a fault condition.
High and low voltage protection —
Safety protection for excessive or low
voltage conditions.
Automatic intelligent reset —Unit
shall automatically restart 5 minutes
after shutdown if the fault has cleared.
Should a fault occur 3 times sequen-
tially, lockout will occur.
Accessory output —In applications
such as variable speed pumping, a
24-v output cycles a motorized water
valve or damper actuator with
compressor.
Performance monitor (PM) —
Unique feature monitors water temper-
atures to warn when the heat pump
is operating inefficiently or beyond
typical operating range. A field select-
able switch initiates a warning code on
the unit display.
Water coil freeze protection
(selectable for water or anti-
freeze) —Field selectable switch for
water and water/glycol solution sys-
tems initiates a fault when tempera-
tures exceed the selected limit for
30 continuous seconds.
Air coil freeze protection (check
filter operation) —Field selectable
switch for assessing excessive filter
pressure drop initiates a fault when
temperatures exceed the selected limit
for 30 continuous seconds.
Alarm relay setting — Selectable
24-v or pilot duty dry contact provides
remote alarm activation.
Electric heat option —Output pro-
vided on the controller for operating
two stages of emergency electric heat.
Service Test mode with diagnostic
LED (light-emitting diode) —Test
mode allows service personnel to
check the operation of the WSHP
and control system efficiently. Upon
entering Test mode, time delays speed
up, and the Status LED flashes a code
indicating the last fault. This mode
provides easy fault diagnosis; based on
the fault code the status LED flashes,
Carrier provided troubleshooting tables
provide easy reference to typical
problems.
LED visual output —An LED panel
indicates high pressure, low pressure,
low voltage, high voltage, air/water
freeze protection, condensate over-
flow, and control status.
WSHP Open multiple protocol
controller — Carrier's state of the art
water source heat pump multiple pro-
tocol controller is capable of communi-
cating BACnet™, Modbus®*, N2, and
LON (with a separate card) protocols.
The controller is designed specifically
for Carrier's WSHPs in order to bring
more features and benefits to the units
such as waterside economizer control,
auxiliary heat, dehumidification, etc., in
addition to independent compressor
and fan operation. The WSHP Open
controller can be used to actively moni-
tor and control all modes of operation
as well as monitor the following diag-
nostics and features: unit number, zone
temperature, zone set point, zone hu-
midity set point, discharge air tempera-
tures, fan status, stages of heating,
stages of cooling, outdoor-air tempera-
ture, leaving-air temperature, leaving
water temperature, alarm status, and
alarm lockout condition.
The controller also provides a pro-
active approach to maintenance and
service enabling the unit to recognize
and correct operating conditions out-
side of recommended operating condi-
tions avoiding the need to manually re-
start equipment. From a system stand-
point WSHP Open controller can
accept both water and airside linkage.
Condenser water linkage provides
optimized water loop operation using
the UC (universal controller) Open XP
loop controller. Loop pump operation
is automatically controlled by WSHP
equipment occupancy schedules, unoc-
cupied demand and tenant override
conditions. Positive pump status feed-
back prevents nuisance fault trips.
Airside linkage enables the WSHP
equipment to be completely integrated
with the Carrier's VVT®application as
a system. The WSHP Open controller
responds to individual zone demands
rather than average temperature condi-
tions to provide individual temperature
control in each zone.
This controller has a 38.4 kilobaud
communications capability and is com-
patible with i-Vu®Open building auto-
mation system controls and CCN con-
trols. The addition of the Carrier CO2
sensor in the conditioned space pro-
vides ASHRAE 62-99 compliance and
demand controlled ventilation (DCV). A
DCV control strategy is especially ben-
eficial for a water source heat pump
system to minimize the energy utilized
to condition ventilation air. In combina-
tion with energy efficient Aquazone
units, DCV may be the most energy ef-
ficient approach ever developed for a
water source heat pump system.
The WSHP Open multiple protocol
controller is designed specifically for
constant volume (CV) and variable
volume and temperature (VVT®) appli-
cations. This comprehensive controls
system allows water source heat pumps
to be linked together to create a fully
functional HVAC (heating, ventilation,
and air conditioning) automation
system.
PremierLink™ controller adds
reliability, efficiency, and
simplification
The PremierLink direct digital control-
ler can be ordered as a factory-installed
option. Designed and manufactured
exclusively by Carrier, the controller
can be used to 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 temperatures,
fan status, stages of heating, stages of
cooling, outdoor-air temperature, leav-
ing-air temperature, leaving water tem-
perature, alarm status, and alarm lock-
out condition.
This controller has a 38.4 kilobaud
communications capability and is
compatible with i-Vu Open building au-
tomation system controls and CCN
controls. The addition of the Carrier
CO2sensor in the conditioned space
provides ASHRAE 62-99 compliance
and demand controlled ventilation
(DCV). A DCV control strategy is espe-
cially beneficial for a water source heat
pump system to minimize the energy
utilized to condition ventilation air. In
combination with energy efficient
Aquazone units, DCV may be the most
energy efficient approach ever devel-
oped for a water source heat pump
system.
*Registered trademark of Schneider Electric.

4
The PremierLink™ peer-to-peer, In-
ternet ready communicating control is
designed specifically for constant vol-
ume (CV) and variable volume and
temperature (VVT®) applications. This
comprehensive controls system allows
water source heat pumps to be linked
together to create a fully functional
HVAC (heating, ventilation, and air
conditioning) automation system.
Puron®refrigerant (R-410A)
Puron refrigerant (R-410A) is a non-
chlorine based refrigerant. Puron re-
frigerant characteristics, compared to
R-22, have:
• Binary and near azeotropic mixture
of 50% R-32 and 50% R-125.
• Higher efficiencies (50 to 60%
higher operating pressures).
• Non-ozone depleting potential and
low global warming potential.
• Virtually no glide. Unlike other alter-
native refrigerants, the two compo-
nents in Puron refrigerant have
virtually the same leak rates. There-
fore, refrigerant can be added if nec-
essary without recovering the
charge.
E-coated (electro-coated) air
coils
Carrier’s 50PEC units are available
with an optional e-coated air coil. This
electro-coating process will provide
years of protection against corrosion
from airborne chemicals. Modern
building materials, such as counter-
tops, floor coverings, paints and other
materials, can “outgas” chemicals into
the indoor air. Some of these chemi-
cals are suspected of contributing to
corrosion in the air coils found in both
traditional and geothermal heating and
cooling equipment. Corrosion often re-
sults 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 im-
prove moisture shedding and therefore
improve a units moisture removal ca-
pability resulting in a more comfortable
indoor environment. The 50PEC units
assure both maximum air coil life and
comfort.
Features/Benefits (cont)

5
Model number nomenclature
Aquazone™ Water Source Heat Pump
Console Unit with Puron®
Refrigerant (R-410A)
**
WWSHP Open Multiple Protocol Communicating Control
with Complete C
–
YWSHP Open Multiple Protocol Communicating Control
with Deluxe D
–
NRTL/C
As an ENERGY STAR®Partner,
Carrier Corporation has deter-
mined that this product meets
the ENERGY STAR guidelines
for energy efficiency.
LEGEND
*See table for autoflow regulator sizing.
†Right and left hand orientation is determined by looking at front of unit.
**Sizes 09-12 only.
NOTES:
1. Standard 60 Hz unit controls are ETL listed.
2. Complete C controllers take 50-va transformers. Deluxe D controllers take
75-va transformers. All DDC controllers take 75-va transformers.
3. The 50PEC09-15 unit cabinets are 48 in. with ½ in. water connections. The
50PEC18 unit cabinet is 54 in. with ¾ in. water connections.
DDC — Direct Digital Control
AUTOFLOW REGULATOR SIZING (gpm)
50PEC
UNIT SIZE 2.25 gpm/ton 3.0 gpm/ton
09 2.0 2.5
12 2.5 3.0
15 3.0 3.5
18 3.5 4.0
a50-8400

6
LEGEND NOTES:
1. Ratings are in accordance with and certified to ARI/ISO Standard
13256-1.
2. Cooling capacities based upon 80.6 F db, 66.2 F wb entering air
temperature.
3. Heating capacities based upon 68 F db, 59 F wb entering air tem-
perature.
4. All airflow is rated on high speed. Units factory-shipped on medium
and low motor taps.
5. All ratings based upon operation at lower voltage of dual voltage
rated models.
Physical data
LEGEND
50PEC
UNIT
SIZE
WATER LOOP HEAT PUMP GROUND WATER HEAT PUMP GROUND LOOP HEAT PUMP
Cooling 86 F Heating 68 F Cooling 59 F Heating 50 F Cooling 77 F Heating 32 F
Capacity
(Btuh)
EER
(Btuh/W)
Capacity
(Btuh) COP Capacity (Btuh)
EER
(Btuh/W)
Capacity
(Btuh) COP Capacity (Btuh)
EER
(Btuh/W)
Capacity
(Btuh) COP
09 8,600 13.3 11,400 4.6 9,200 18.6 9,500 4.0 8,800 14.9 7,300 3.3
12 11,300 13.3 14,900 4.9 12,500 18.7 12,100 4.1 11,800 15.1 9,300 3.7
15 14,100 13.5 18,200 5.1 16,600 21.3 14,800 4.3 15,100 15.8 11,400 3.5
18 16,200 13.0 20,100 4.5 17,600 19.5 16,500 4.0 16,500 15.0 13,200 3.4
COP — Coefficient of Performance
db — Dry Bulb Temperature
EER — Energy Efficiency Ratio
wb — Wet Bulb Temperature
BASE UNIT 50PEC 09 12 15 18
NOMINAL COOLING CAPACITY (Btuh) 9,300 12,300 13,800 16,000
COMPRESSOR Rotary
BLOWER
Motor Horsepower
Wheel Size D x W (in.) 2 each
1/20
51/4x 61/4
1/12
51/4x 61/4
1/8
51/4x 61/4
1/8
51/4x 61/4
FILTER SIZE (in.) Bottom Return (Qty) 10 x 30 x 1 (1) 10 x 30 x 1 (1) 10 x 30 x 1 (1) 10 x 36 x 1(1)
FILTER SIZE (in.) Front Return (Qty) 7 x 291/2x 1/8(1) 7 x 291/2x 1/8(1) 7 x 291/2x 1/8(1) 7 x 351/2x 1/8(1)
UNIT WEIGHT (lb)
Shipping
Operating
185
175
190
180
200
190
232
220
REF. TO AIR HEAT EXCHANGER
Face Area (sq ft)
No. of Rows Deep
Copper Tube Size OD (in.)
Fin Spacing (FPI)
1.4
2
3/8
13
1.4
3
3/8
13
1.8
3
3/8
13
1.8
3
3/8
12
REFRIG. CHARGE (R-410A)/CKT (oz)
No. of Circuits
28
1
29
1
37
1
39
1
UNIT CABINET WITH BOTTOM RETURN WITH STANDARD
5 in. SUBBASE Width x Height x Depth (in.) 48 x 26 x 12 48 x 26 x 12 48 x 26 x 12 54 x 26 x 12
UNIT CABINET WITH FRONT RETURN
(NO SUBBASE) Width x Height x Depth (in.) 48 x 21 x 12 48 x 21 x 12 48 x 21 x 12 54 x 21 x 12
WATER IN/OUT SIZE OD SWEAT (in.) 1/21/21/23/4
CONDENSATE SIZE ID VINYL (in.) 5/85/85/85/8
FPI — Fins Per Inch
ARI/ISO capacity ratings

7
Factory-installed options
Cupronickel heat exchangers are available for higher
corrosion protection for applications such as open tower,
geothermal, etc. Consult the water quality guidelines for
proper application and selection of this option.
Thermostat options include a unit-mounted manual
changeover (MCO) or auto changeover (ACO) thermostat.
The temperature set point knob and pushbutton switches
for fan speed and cool/heat mode (MCO) selection are
conveniently located on the top. The thermostat senses the
return-air temperature. The thermostat sends the appro-
priate signal to the controller for cooling or heating mode
of operation.
Options R and S allow connection to a remote wall-
mounted thermostat. The Complete C controller requires a
heat pump thermostat. The Deluxe D controller can be
configured for heat pump or heat/cool thermostat.
Extended range is provided to insulate the coaxial coil to
prevent condensation, and therefore potential dripping
problems, in applications where the entering water
temperature is below the normal operating range (less than
60 F).
Cabinet options include a locking control panel for
added security. Bottom or front return with left or right
hand configurations are available for ease of installation.
Available with 5 in. subbase (bottom return units only), with
or without motorized damper.
Motorized fresh air damper with the unit-mounted
thermostat. Opens when LOW or HIGH fan speed selec-
tions are made from the push button switches. When
STOP or FAN ONLY selections are made the spring return
on the damper motor closes the damper. With remote
thermostat the motorized fresh air damper opens when the
fan is running.
Piping connections can be provided on either the right
or left hand side of the unit, for easy installation. Orienta-
tion is determined by facing the unit from the front side.
Automatic flow regulators include internally mounted
2.25 or 3.0 gpm per ton automatic flow regulating valves
for easier installation.
Two-way motorized control valve can be provided with
a copper or cupronickel heat exchanger for applications
involving open type systems or variable speed pumping.
This valve will slowly open and close in conjunction with the
compressor operation to shut off or turn on water to the
unit. Standard two-way valve performance includes coeffi-
cient of velocity (Cv) of 2.9 and maximum operating pres-
sure differential (MOPD) of 125 psi.
Mute package includes high density noise suppression
material on front, right, and left sides of compressor
compartment and 1/2-in. fiberglass insulation on all
insulated surfaces, for extra-quiet operation in the most
critical applications.
Deluxe D control system provides the same functions
as the Complete C while incorporating additional flexibility
and functions to include:
Thermostat input capabilities — Accommodate emergency
shutdown mode and night setback with override (NSB)
potential. Night setback from low temperature thermostat
with 2-hour override is initiated by a momentary signal
from the thermostat.
Compressor relay staging — Used with dual stage units
(units with 2 compressors and 2 Deluxe D controls) or in
master/slave applications.
Boilerless electric heat control system — Allows automatic
changeover to electric heat at low loop water temperature.
Intelligent reversing valve operation — Minimizes reversing
valve operation for extended life and quiet operation.
Thermostat type select (Y, O or Y, W) — Provides ability to
work and select heat pump or heat/cool thermostats (Y, W).
Reversing valve signal select (O or B) — Provides selection
for heat pump O/B thermostats.
Dehumidistat input — Provides operation of fan control for
dehumidification operation.
Multiple units on one thermostat/wall sensor — Provides
for communication for up to three heat pumps on one
thermostat.
Boilerless changeover temperature — Provides selection of
boilerless changeover temperature set point.
Accessory relays — Allow configuration for multiple appli-
cations including fan and compressor cycling, digital night
setback (NSB), mechanical night setback, water valve oper-
ation, and outside air damper operation.
Night low limit — If the unit operation is turned OFF from
either the push button switches, remote thermostat or the
energy management system, it is possible that the space
temperature could drop uncontrollably. The night low limit
feature, with Deluxe D controller, helps maintain the space
temperature at a level that is the best compromise between
energy consumption and a safe space temperature. A ther-
mostat located near the return air filter activates the blower
and compressor operation when the space temperature
DESCRIPTION
FACTORY-
INSTALLED
OPTIONS
FIELD-
INSTALLED
ACCESSORIES
Cupronickel Heat Exchangers X
Thermostat Options X
Extended Range X
Cabinet Options X
Motorized Fresh Air Damper X
Piping Connections X
Automatic Flow Regulators X
Two-Way Motorized Control Valve X
Mute Package X
Deluxe D Control System X
PremierLink™ Controller X
LONMark®Compliant Controller X
WSHP Open Multiple Protocol
Controller
X
Aquazone™ Thermostats X
Aquazone System Control Panel X
UC Open XP Loop Controller X
Fire-Rated Hoses X
Ball Valves X
Y Strainers X
Solenoid Valves X
Hose Kit Assemblies X
Remote Sensors (SPT, CO2,
Humidity Sensors)
X
PremierLink Accessories X
Options and accessories

8
falls below 50 F. When return-air temperature is raised
above 55 F the compressor and blower stop.
Override function — An override function is available for
units operating in occupied/unoccupied mode under the
control of an external timeclock or an energy management
system. A contact closure from the timeclock or energy
management system shorts the NSB and C terminal on the
Deluxe D controller signaling an unoccupied mode.
For units with the unit-mounted thermostat, pressing
override switch (located under control access door) will
override the unoccupied mode and allow the occupied
mode of operation to continue for a period of two hours.
The units with the remote wall-mounted thermostat
require a digital thermostat with the override function. In
unoccupied mode, an accessory relay is energized on the
Deluxe D controller. The NO/NC contacts of the relay can
be used as appropriate input to the digital thermostat to
signal occupied/unoccupied mode. The thermostat selects
cooling/heating set points based on occupied/unoccupied
mode.
PremierLink™ controller is compatible with the Carrier
Comfort Network®(CCN) and other building automation
systems (BAS). This control is designed to allow users the
access and ability to change factory-defined settings thus
expanding the function of the standard unit.
LONMark®compliant controller contains the factory-
loaded Aquazone™ water source heat pump application
for an interoperable control solution.
WSHP Open multiple protocol controller is a proac-
tive controller capable of communicating BACnet™,
Modbus®*, N2, and LON (with a separate card) protocols.
The controller is designed to allow users the access and
ability to change and configure multiple settings and fea-
tures including indoor air quality (IAQ), waterside econo-
mizer controls, etc.
Field-installed accessories
Carrier’s line of Aquazone thermostats (used with
remote thermostat units) are both attractive and multi-
functional, accommodating stand-alone water source heat
pump installations.
Programmable 7-day thermostat offers 2-stage heat,
2-stage cool, auto changeover, 7-day programmable with
copy command, 4 settings per day, fully electronic, 24 vac,
backlit LCD, keypad lockout, no batteries required,
5-minute compressor protection, NEVERLOST™ memory,
3 security levels, temperature display in degrees F or C.
Programmable 7-day light-activated thermostat offers
same features as the 7-day programmable thermostat and
includes occupied comfort settings with lights on, unoccu-
pied energy savings with lights off.
Programmable 7-day flush-mount thermostat offers the
same features as the 7-day programmable thermostat and
includes locking coverplate with tamper proof screws, flush
to wall mount, holiday/vacation programming, set point
limiting, dual point with adjustable deadband, O or B termi-
nal, and optional wall or duct-mounted remote sensor.
Programmable 5-day thermostat offers 2-stage
heat, 2-stage cool, auto changeover, 5-minute built-
in compressor protection, locking cover included,
temperature display in degrees F or C, keypad lockout,
backlit display, 5-1-1 programming, O or B terminal, dual
set point with adjustable deadband, configurable display,
self-prompting program, 4 settings per day.
Non-programmable thermostat offers 2 heat stages, 2 cool
stages, auto changeover, 5-minute built in compressor pro-
tection, locking cover included, temperature display in
degrees F or C, keypad lockout, large display, back-lit dis-
play, O or B terminal, dual set point with adjustable dead-
band, backplate with terminals.
Aquazone system control panel includes a pre-
programmed, easy to use, Carrier Comfort Controller set
up for a WSHP system.
• Coordinates, monitors, and controls all WSHP units
and ancillary equipment including cooling towers, boil-
ers, and system pumps.
• 50RLP model nomenclature is used to customize the
panel to control all WSHP system requirements.
• Panel can be ordered to include 2, 4, 6, or 8 stages of
system heat rejection.
• Panel can be ordered to include 2, 4, 6, or 8 stages of
system heat addition.
• Panel can be ordered with unique WSHP zone operation
capabilities for stand alone systems (i.e., non-communicating)
to control 10 or 18 zones of WSHP units.
• Panel can be ordered to control variable frequency cool-
ing tower fan operation.
• System pumping operation can be configured for start/
stop, lead/lag, or variable frequency pump operation.
• Direct digital controls (DDC) compatible using the
Carrier Comfort Network (CCN) and WSHP units utiliz-
ing PremierLink CCN controllers.
UC Open XP loop controller with six stages (2 stages
for heating and 4 stages for cooling) includes:
• Loop temperature alarms
• Two pump single loop flow monitoring with the ability
to manually select the lead pump
• One common alarm signal and indicating light and one
audible alarm
• Loop water temperature sensor test circuit
• Functional test simulation from operator keypad
• Real timeclock, industrial noise ratings
• Loop water temperature control switch
• Loop controller with six stages (2 stages for heating and
4 stages for cooling)
Fire-rated hoses are 2 ft long and have a fixed MPT on
one end and a swivel with an adapter on the other end.
Hose kits are provided with both a supply and return hose
and can be either stainless steel or galvanized. Five sizes
are available (1/2, 3/4, 1, 11/4, 11/2in.).
Ball valves (brass body) used for shutoff and balancing
water flow. Available with memory, memory stop, and
pressure temperature ports. UL-listed brass body, ball and
stem type with Teflon† seats and seals. Five sizes are avail-
able (1/2, 3/4, 1, 11/4, 11/2in.).
Y strainers (bronze body) are “Y” type strainers with a
brass cap. Maximum operating pressure rating of
450 psi. Strainer screen made of stainless steel. Available
with blow down valves. Five sizes are available (1/2, 3/4, 1,
11/4, 11/2in.).
Options and accessories (cont)
*Registered trademark of Schneider Electric.
†Teflon is a trademark of E. I. du Pont de Nemours and Company.

9
Solenoid valves (brass body) offer 3.5 watt coil,
24 volt, 50/60 Hz, 740 amps inrush, .312 amps holding.
Slow operation for quiet system application. Five sizes are
available (1/2, 3/4, 1, 11/4, 11/2in.).
Hose kit assemblies provide all the necessary compo-
nents to hook up a water-side system. Supply hose
includes a ported ball valve with pressure temperature
(P/T) plug ports, flexible stainless steel hose with swivel
and nipple. Return hose includes a ball valve, preset auto-
matic balancing valve (gpm) with two P/T ports, flexible
stainless steel hose with a swivel and nipple, balancing
valve, and low-pressure drop water control valve.
Remote sensors are available for Aquazone flush-mount
thermostats and for wall (wired and wireless) or duct
mounted applications.
SPT Standard offers space temperature sensor with com-
munication port.
SPT Plus offers space temperature sensor with set point
adjust, local override with indicating light and communica-
tion port.
SPT Pro offers space temperature sensor with LCD dis-
play, set point adjust, local override, alarm icon, outside
air, and unit status with heating and cooling set points.
SPT Pro+ offers space temperature sensor with LCD dis-
play, set point adjust, local override, alarm icon, outside
air, unit status with heating and cooling set points, and fan
speed control.
LON wall sensors are available in 3 models: sensor only,
sensor with status override indicator, and sensor with set
point, status adjustment override, and digital LCD display.
PremierLink™ accessories are available to provide a
fully integrated WSHP DDC system. Accessories include
supply air temperature sensors (with override and/or set
point adjustment), communicating room sensors, CO2sen-
sors (for use in demand control ventilation), and linkage
thermostats (to control multiple units from one thermostat).

10
Options and accessories (cont)
COOL
HEAT
AUTO
R
5-DAY PROGRAMMABLE/
NON-PROGRAMMABLE
AUTO
Pm
COOL
HEAT
Carrier
®
AQUAZONE™ THERMOSTATS
7-DAY PROGRAMMABLE/
LIGHT-ACTIVATED PROGRAMMABLE
7-DAY PROGRAMMABLE
FLUSH MOUNT
LON WALL SENSORS
SENSOR ONLY SENSOR WITH OVERRIDE SENSOR WITH SET POINT ADJUSTMENT,
OVERRIDE AND DIGITAL LCD
WSHP OPEN SENSORS
SPACE TEMPERATURE
SENSOR WITH SET
POINT ADJUSTMENT
AND LOCAL OVERRIDE
SPACE TEMPERATURE
SENSOR WITH SLIDE SET
POINT ADJUSTMENT AND
LOCAL OVERRIDE
SPACE TEMPERATURE SENSOR
WITH SET POINT ADJUSTMENT,
FAN SPEED CONTROL, AND
LOCAL OVERRIDE
SPACE TEMPERATURE
SENSOR ONLY
MANUAL ON
INFO
WARMER
COOLER
a33 OCCUPIED
WARMER
COOLER
MANUAL
ON
a33-
a33-
MANUAL ON
INFO
WARMER
COOLER
MODE FAN SPEED
a33-

11
Dimensions
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
30
11.5
(292) 4.9
(125)
3.5
(89)
25.9
(658)
DAMPER OPENING
48.0
(1219)
1.63
(41)
11.75
(298)9.81
(249)
0.59
(15)
21.0
(533)
4.9
(125)
REAR VIEW
AIR
INLET
DISCHARGE
AIR
1.75
(44)
3.00
(76)
2.12 (54)
R.H. PIPE AND
ELECTRIC AREA (NOTE 2)
1.0 (25)
1.0 (25)
4.5
(114)
20.0
(508)
12.0
(305)
10.0
(254)
BOTTOM VIEW
5.0
(127)
16.0
(406)
FRONT VIEW
CONTROL ACCESS DOOR
AIR INLET AREA
48.0
(1219)
33.5
(851)
1.75
(44.5)
48.0
(1219)
3.53
(90)
SIDE
VIEW
REAR
ACCESS
˚
Filter located inside and at
top of air inlet area. Rotate
filter latch forward, filter rack
can be pulled forward 3” to 4”
for filter access
R.H.
(NOTE 2)
6.88
(174)
.75 (19)
a50-8339
50PEC09-15 BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING

12
Dimensions (cont)
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
a50-8340
30˚
11.50
(292) 4.90
(125)
3.50
(89)
25.90
(658)
DAMPER OPENING
54.00
(1372)
1.63
(41)
11.75
(298)9.81
(249)
0.59
(15)
21.00
(533)
4.90
(125)
REAR VIEW
AIR
INLET
DISCHARGE
AIR
1.75
(44)
3.00
(76)
0.75 (19)
R.H. PIPE AND
ELECTRIC AREA
(NOTE 2)
1.00(25)
1.00 (25)
4.50
(114)
20.00
(508)
12.00
(305)
10.00
(254)
BOTTOM VIEW
5.00
(127)
16.00
(406)
FRONT VIEW
CONTROL ACCESS DOOR
AIR INLET AREA
54.00
(1372)
39.50
(1003)
1.75
(44.5)
54.00
(1372)
3.53
(90)
SIDE
VIEW
RH REAR
ACCESS
(NOTE 2)
Filter located inside and at
top of air inlet area. Push
tabs up and back to release
filter for replacement.
2.12 (54)
6.88
(174)
50PEC18 BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING

13
a50-8341
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
30°
11.5
(292) 4.9
(125)
3.5
(89)
25.9
(658)
DAMPER OPENING
48.0
(1219)
1.63
(41)
11.75
(298)9.9
(251)
0.59
(15)
21.0
(533)
4.9
(125)
REAR VIEW
AIR
INLET
DISCHARGE
AIR
12.0
(305)
BOTTOM VIEW
12.6
(320)
FRONT VIEW
CONTROL ACCESS DOOR
AIR INLET AREA
48.0
(1219)
33.5
(851)
1.75
(44.5)
48.0
(1219)
1.5
(38)
3.53
(90)
1.75
(44)
3.00
(76)
0.75
(19)
L.H. PIPE AND
ELECTRIC AREA
NOTE 2
10.0
(254)
REAR
ACCESS
(NOTE 2)
1(25)
1 (25)
4.5
(114)
20.0
(508)
SIDE
VIEW
Filter located inside and at
top of air inlet area. Rotate
filter latch forward, filter rack
can be pulled forward 3” to 4”
for filter access
L.H.
6.88
(174)
2.12 (54)
50PEC09-15 BOTTOM RETURN CABINET DIMENSIONS — LEFT HAND PIPING

14
Dimensions (cont)
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
30˚
11.50
(292) 4.90
(125)
3.50
(89)
25.90
(658)
DAMPER OPENING
54.00
(1372)
1.63
(41)
11.75
(298)
9.90
(251)
0.59
(15)
21.00
(533)
4.90
(125)
REAR VIEW
AIR
INLET
DISCHARGE
AIR
BOTTOM VIEW
12.60
(320)
FRONT VIEW
CONTROL ACCESS DOOR
AIR INLET AREA
54.00
(1372)
39.50
(1003)
1.75
(44.5)
54.00
(1372)
1.50
(38)
3.53
(90)
1.75
(44)
3.00
(76)
0.75
(19)
L.H. PIPE AND
ELECTRIC AREA
(Note 2)
10.00
(254)
REAR
ACCESS
(Note 2)
1.00 (25)
1.00 (25)
4.50
(114)
20.00
(508)
SIDE
VIEW
12.00
(305)
Filter located inside and at
top of air inlet area. Rotate
filter latch forward, filter rack
can be pulled forward 3” to 4”
for filter access
6.88
(174)
2.12 (54)
a50-8342
50PEC18 BOTTOM RETURN CABINET DIMENSIONS — LEFT HAND PIPING

15
a50-8343
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
48.0
30
3.5
(89)
21.0
(533)
21.0
(533)
REAR VIEW
DISCHARGE
AIR
REAR
ACCESS
1.0 (25)
1.0 (25)
4.5
(114)
20.0
(508)
12.0
(305)
5.0
(127)
16.0
(406)
FRONT VIEW
CONTROL ACCESS DOOR
48.0
(1219)
43.7
(1110)
7.9
(201)
21.0
(533)
R.H. PIPE AND
ELECTRIC AREA
(1219)
12.0
(305) BOTTOM VIEW
48.0
(1219)
SIDE
VIEW
AIR
INLET
Filter located behind return
air grille and requiresremoval of
cabinet front for access.
˚
R.H.
(NOTE 2)
.50 (13)
11.50
(292)
.75 (19)
4.12
(105)
50PEC09-15 FRONT RETURN CABINET DIMENSIONS — RIGHT HAND PIPING

16
Dimensions (cont)
a50-8344
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
54.00
30˚
3.50
(89)
21.00
(533)
21.00
(533)
REAR VIEW
DISCHARGE
AIR
RH REAR
ACCESS
(NOTE 2)
1.00(25)
1.00(25)
4.12
(105)
20.00
(508)
12.00
(305)
5.00
(127)
16.00
(406)
FRONT VIEW
CONTROL ACCESS DOOR
54.00
(1372)
48.00
(1219)
7.90
(201)
21.00
(533)
R.H. PIPE AND
ELECTRIC AREA
(NOTE 2)
(1372)
12.00
(305) BOTTOM VIEW
54.00
(1372)
SIDE
VIEW
AIR
INLET
Filter located behind return
air grille and requiresremoval of
cabinet front for access.
.75 (19)
4.12
(105)
11.50
(292)
.50 (13)
50PEC18 FRONT RETURN CABINET DIMENSIONS — RIGHT HAND PIPING

17
°
(89)
L.H.
(NOTE 2)
.50 (13)
11.50
(292)
.75
(19) 4.12
(105)
(Note 2)
a50-8345
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
50PEC09-15 FRONT RETURN CABINET DIMENSIONS — LEFT HAND PIPING

18
Dimensions (cont)
a50-8346
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Access is reduced if optional disconnect box is selected.
3. Optional autoflow valve, motorized water valve and disconnect box are shown.
54.00
30˚
3.50
(89)
21.00
(533)
21.00
(533)
REAR VIEW
DISCHARGE
AIR
REAR
ACCESS
(Note 2)
(114)
12.00
(305)
1.50
(38.1)
12.60
(320)
FRONT VIEW
CONTROL ACCESS DOOR
54.00
(1372)
48.00
(1219)
7.90
(201)
21.00
(533)
(1372)
11.50
(292)
BOTTOM VIEW
54.00
(1372)
4.50
1.00 (25)
20.00
(508)
L.H. PIPE AND
ELECTRIC
(Note 2)
AREA
SIDE
VIEW
AIR
INLET
Filter located behind return
air grille and requiresremoval of
cabinet front for access.
4.12
(105)
.75
(19)
1.00 (25)
.50
(13)
50PEC18 FRONT RETURN CABINET DIMENSIONS — LEFT HAND PIPING

19
Power Supply
Blower Deck
Blower Access Panel
Compressor
Access
Panel
Control Box
40.98
(1041)
4.46
(113) 0.75
(19) 0.75
(19)
*
20.50
(521)
11.54
(293)
*16.66
(423)
30°
0.87
(22)
Hard Wire
Power Supply
Blower Deck
Blower Access Panel
Compressor
Access
Panel
Control Box
7.50
(191)
0.87
(22)
11.54
(293)
3.42
(87)
*16.66
(423)
30°
3.01
(76)
5.36
(136)
0.75
(19)
0.75
(19)
4.46
(113)
*
20.50
(521)
40.98
(1040)
3.01
(76)
5.36
(136)
Optional Motorized
Water Valve
Optional
Autoflow
Valve
Optional
Fused Disconnect Box
(mounted to cabinet
not chassis)
Optional
Motorized
Water Valve
Optional
Autoflow
Valve
*
3.56
(90)
7.50
(191)
3.42
(87)
*
3.56
(90)
Optional Fused
Disconnect Box
(mounted to cabinet
not chassis)
Power supply enters
Bottom of Box
Optional Disconnect
Only Box (All Configurations)
Power supply enters
Bottom of Box
4.46
(113)
4.56
(116)
Power supply enters
Bottom of Box
*If optional subbase is selected or if unit is installed raised above the floor, add 4.9 in. to dimension. NOTES:
1. Dimensions shown are in inches. Dimensions in parentheses are in millimeters. 2. Optional autoflow valve, motorized water valve and disconnect box are shown.
LEFT HAND CONFIGURATION
RIGHT HAND CONFIGURATION
a50-8347
50PEC09-15 CHASSIS DIMENSIONS — BOTTOM RETURN

20
Dimensions (cont)
NOTES:
1. Dimensions shown are in inches. Dimensions in parentheses are in millimeters. 2. Optional autoflow valve, motorized water valve and disconnect box are shown. 3. Chassis can mount directly on floor.
Power Supply
Blower Deck
Compressor
Access
Panel
Control Box
40.98
(1041)
4.46
(113) 0.75
(19) 0.75
(19)
20.50
(521)
11.54
(293)
16.66
(423)
30°
0.87
(22)
Hard Wire
Power Supply
Blower Deck
Filter
Compressor
Access
Panel
Control Box
7.50
(191)
0.87
(22)
11.54
(293)
3.42
(87)
16.66
(423)
30°
3.01
(76)
5.36
(136)
0.75
(19)
0.75
(19)
4.46
(113)
20.50
(521)
40.98
(1040)
3.01
(76)
5.36
(136)
Optional
Motorized Water Valve
Optional Autoflow Valve
Optional
Fused Disconnect Box
(mounted to cabinet
not chassis)
Optional
Motorized
Water Valve
Optional
Autoflow
Valve
3.56
(90)
7.50
(191)
3.42
(87)
3.56
(90)
Optional Fused Disconnect Box (mounted to cabinet
not chassis)
Power supply enters
Bottom of Box
Optional Disconnect Only Box (All Configurations)
Power supply enters
Bottom of Box
4.46
(113)
4.56
(116)
Power supply enters
Bottom of Box
Filter
7.38
(187)
30.00
(762)
7.38
(187)
Blower Screen
Blower Screen
30.00
(762)
RIGHT HAND CONFIGURATION
a50-8348
LEFT HAND CONFIGURATION
50PEC09-15 CHASSIS DIMENSIONS — FRONT RETURN