• Rubber grommet mounted
compressors for quiet operation
• Sloped top cabinet with powder
paint finish
• 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 controls
accommodate all systems
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
Carrier 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 12.1 for boiler/tower
systems and as high as 19.5 for geothermal applications. Heating COPs
(Coefficient of Performance) are as
high as 4.9, among the highest in the
industry.
Copyright 2004 Carrier CorporationForm 50KQL-1PD
Page 2
Quiet operation
The Carrier Console WSHP provides
exceptionally quiet operation for maximum comfort.
Design flexibility
Aquazone™ Console WSHP units are
offered in 5 capacity sizes and 3 different voltages to meet individual zone
needs efficiently and effectively.
Standard and extended operating
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 protection 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 exchangers are available and should be used on
all open loop applications.
Units are rated and certified in
accordance with ARI/ISO/ASHRAE
13256-1 performance standard, and
are CSA/NRTL listed.
Installation ease
The unit is packaged for simple, low
cost handling, with minimal time required 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 R-22
refrigerant.
Water connections are available in a
variety of configurations direct from
the factory. The standard configuration
5
is
/8 in. OD Sweat connections for
maximum flexibility in the field. Both
FPT and MPT are available as factoryinstalled options to improve installation
efficiency. Additionally, factoryinstalled 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 power distribution terminal block. To further improve installation efficiency, a
fused or unfused disconnect switch as
well as a 20 amp plug and cord are
available as factory-installed options.
5
A
/8 in. ID vinyl condensate connection is provided for connection to
the field-installed condensate line.
Compact cabinet design dimensions are 12 in. deep, 48 in. wide and
24 in. tall (with 3 in. subbase). For flexibility, the controls can be mounted on
the top right or left side. Additionally,
the sloped top design 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
permanently lubricated for worry-free
performance. If the unit does require
service, an easily removable cabinet
and slide out fan section make access
simple.
Refrigerant circuit protection is designed to result in fewer service calls.
Units are equipped with easily accessible service access ports on both the
suction and the discharge refrigerant
lines for on-site testing and environmentally 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 control (DDC) applications include the Carrier Comfort Network
(CCN) and open protocol systems.
Carrier’s Aquazone standard unit
solid-state control system, the Complete C, provides control of the unit
compressor, reversing valve, fan, safety
features, and troubleshooting fault indication 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.
As an ENERGY STA R ®Partner,
Carrier Corporation has determined that this product meets
the E
NERGY STA R guidelines
for energy efficiency.
Page 3
Features/Benefits (cont)
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 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
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 sequentially, 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 temperatures to warn when the heat pump
is operating inefficiently or beyond
typical operating range. A field selectable switch initiates a warning code on
the unit display.
Water coil freeze protection
(selectable for water or antifreeze) — Field selectable switch for
water and water/glycol solution systems initiates a fault when temperatures 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) — Tes t
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 overflow, and control status.
Carrier PremierLink™ controller adds reliability, efficiency,
and simplification
The PremierLink direct digital controller 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, cooling
stages, outdoor-air temperature,
leaving-air temperature, leaving water
temperature, alarm status, and alarm
lockout condition.
This controller has 38.4K baud
communications capability and is compatible with ComfortLink™ Controls,
CCN and ComfortVIEW™ Software.
The Scrolling Marquee and Navigator
are optional tools used for programming and monitoring the unit for optimal performance. Adding the Carrier
CO
sensor in the conditioned space
2
provides ASHRAE 62-99 compliance
and Demand Control Ventilation
(DCV). A DCV control strategy is especially beneficial for a water source heat
pump system to minimize the energy
used to condition ventilation air. In
combination with energy efficient
Aquazone units, DCV may be the most
energy efficient approach ever developed for a water source heat pump
system.
The PremierLink peer-to-peer,
Internet ready communicating control
is designed specifically for Constant
Volume and Variable Volume Temperature applications. This comprehensive
controls system allows water source
heat pumps to be linked together, creating a fully functional HVAC (heating,
ventilation, and air conditioning) automation system.
3
Page 4
Model number nomenclature
50KQL07SAEC101AA
Aquazone™ High-Efficiency R-22
Water Source Heat Pump
50KQL – Console Unit
Size – Nominal Capacity (Tons)
07 – 1/2
09 – 3/4
12 –1
15 – 1 1/4
19 – 1 1/2
Water Circuit Options
Connection TypeValve Option
A – Sweat2-Way Water Control Valve
B – SweatAutoflow Regulator, 2.25 gpm/ton
C – SweatAutoflow Regulator, 3.0 gpm/ton
D – Sweat2-Way Water Control Valve with
E – Sweat2-WayWater Control Valve with
F – FPTNone
G – FPT2-Way Water Control Valve
H – FPTAutoflow Regulator, 2.25 gpm/ton
J – FPTAutoflow Regulator, 3.0 gpm/ton
K – FPT2-Way Water Control Valve with
L – FPT2-Way Water Control Valve with
M – MPTNone
N – MPT2-Way Water Control Valve
P – MPTAutoflow Regulator, 2.25 gpm/ton
Q – MPTAutoflow Regulator, 3.0 gpm/ton
R – MPT2-WayWater Control Valve with
S – SweatNone
T – MPT2-Way Water Control Valve with
Water Supply Orientation
R – Right Hand
L – Left Hand
Control Options
A – Manual Changeover with Complete C
B – Manual Changeover with Deluxe D
C – Auto Changeover with Complete C
D – Auto Changeover with Deluxe D
P – PremierLink™ DDC Control†
R – Remote Thermostat with Complete C
S – Remote Thermostat with Deluxe D
*Right and left hand orientation is determined by looking at front of unit.
ARI— Air Conditioning and Refrigeration Institute
COP — Coefficient of Performance
db— Dry Bulb Temperature
EER — Energy Efficiency Ratio
ISO— International Organization for Standardization
TC— Total Capacity (MBtuh)
THR — Total Heat of Rejection (MBtuh)
SC— Sensible Capacity (MBtuh)
1. Ratings are in accordance with and certified to ARI/ISO Standard
13256-1.
2. Cooling Standard: 80.6 F db, 66 F wb indoor entering air temperature, 86 F entering water temperature.
3. Heating Standard: 68 F db indoor entering air temperature, and
68 F entering water temperature.
wb— Wet Bulb Temperature
Physical data
BASE UNIT 50KQL0709121519
NOMINAL COOLING CAPACITY (Btuh)
COMPRESSOR
BLOWER
Motor Horsepower
Wheel Size D x W (in.) 2 each
FILTER SIZE (in.) Bottom Return
FILTER SIZE (in.) Front Return
UNITWEIGHT(lb)
Shipping
Operating
REF. TO AIR HEAT EXCHANGER
Face Area (sq ft)
No. of Rows Deep
Copper Tube Size OD (in.)
Fin Spacing (FPI)
REFRIG. CHARGE (R-22)/CKT (oz)
No. of Circuits
UNIT CABINET WITH STANDARD SUBBASE
WxHxD(in.)48 x 24 x 1248 x 24 x 1248 x 24 x 1248 x 24 x 1248 x 24 x 12
WATER IN/OUT SIZE OD SWEAT (in.)
CONDENSATE SIZE ID VINYL (in.)
7,8009,30012,30013,80016,000
Rotary
51/4x61/
8x29
7x29
181
173
1
/
1.4
3
13
16
5
5
1
1
2
1
20
/2x3/
/2x1/
/
8
/
8
/
8
4
8
8
1
/
15
51/4x61/
8x291/2x3/
7x291/2x1/
185
177
1.4
2
3
/
8
13
16
1
5
/
8
5
/
8
1
/
15
4
8
8
51/4x61/
8x291/2x3/
7x291/2x1/
4
8
8
195
187
1.4
3
3
/
8
13
21
1
5
/
8
5
/
8
1
/
6
51/4x61/
8x291/2x3/
7x291/2x1/
201
193
1.8
3
3
/
8
13
27
1
5
/
8
5
/
8
4
8x291/2x3/
8
7x291/2x1/
8
51/4x61/
DROP
(ft wg)
1
/
6
206
198
1.8
3
3
/
8
12
24
1
5
/
8
5
/
8
4
8
8
5
Page 6
Options and accessories
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 push button
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 appropriate signal to the controller for cooling or heating mode of operation.
Options R and S allow connection to a remote wallmounted 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 3 or 5 in. subbase, with or without motorized damper.
Motorized fresh air damper with the unit-mounted
thermostat. Opens when LOW or HIGH fan speed selections 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. Orientation is determined by facing the unit from the front side.
Automatic flow regulators include internally mounted
2.25 or 3.0 gpm/ton automatic flow regulating valves for
easier install
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 Cv of
2.9 and maximum operating pressure differential (MOPD)
of 125 psi.
Mute package includes high density noise suppression
material on front, right, and left sides of compressor
compartment and
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
shutdown mode and night setback with override (NSB)
potential. Night setback from low temperature thermostat
ation.
1
/2-in. fiberglass insulation on all
— Accommodate emergency
with 2-hour override is initiated by a momentary signal
from the thermostat.
Compressor relay staging
(units with 2 compressors and 2 Deluxe D controls) or in
master/slave applications.
Boilerless electric heat control system
changeover to electric heat at low loop water temperature.
Intelligent reversing valve operation
valve operation for extended life and quiet operation.
Thermostat type select (Y, O or Y, W)
work and select heat pump or heat/cool thermostats (Y, W).
Reversing valve signal select (O or B)
for heat pump O/B thermostats.
Dehumidistat input
dehumidification operation.
Multiple units on one thermostat/wall sensor
for communication for up to three heat pumps on one
thermostat.
Boilerless changeover temperature
boilerless changeover temperature set point.
Accessory relays
cations including fan and compressor cycling, digital night
setback (NSB), mechanical night setback, water valve operation, and outside air damper operation.
Night low limit
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 thermostat located near the return air filter
activates the blower and compressor operation when the
space temperature falls below 50 F. When return air temperature is raised above 55 F the compressor and blower
stop.
Override function
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.
— Provides operation of fan control for
— Allow configuration for multiple appli-
— If the unit operation is turned OFF from
— An Override function is available for
— Used with dual stage units
— Allows automatic
— Minimizes reversing
— Provides ability to
— Provides selection
— Provides
— Provides selection of
6
Page 7
50KQL CONTROL OPTIONS TABLE
OPTIONCONTROLLERTHERMOSTATFUNCTIONSTRANSFORMER
AComplete CMCO—50 VA
BDeluxe DMCONIGHT LOW LIMIT 2-HR OVERRIDE75 VA
CComplete CACO—50 VA
DDeluxe DACONIGHT LOW LIMIT 2-HR OVERRIDE75 VA
PComplete C with PremierLink™LINKAGEDDC SYSTEM50 VA
RComplete CREMOTE—50 VA
SDeluxe DREMOTE
LEGEND
ACO — Auto Changeover
DDC — Direct Digital Controls
MCO — Manual Changeover
NIGHT LOW LIMIT2-HR
OVERRIDE
75 VA
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
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
same features as the 7-day programmable thermostat and
includes occupied comfort settings with lights on, unoccupied energy savings with lights off.
Programmable 7-day flush-mount thermostat
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 terminal, and optional wall or duct-mounted remote sensor.
Programmable 5-day thermostat
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
2 cool stages, auto changeover, 5-minute built in compressor
protection, locking cover included, temperature display in
degrees F or C, keypad lockout, large display, back-lit display, O or B terminal, dual set point with adjustable deadband, backplate with terminals.
Aquazone system control panel includes a preprogrammed, 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, boilers, 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.
— Offers 2-stage heat,
— Offers
— Offers
— Offers 2-stage heat,
— Offers 2 heat stages,
• 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 cooling tower fan operation.
• System pumping operation can be configured for start/
stop, lead/lag, or variable frequency pump operation.
• Direct Digital Control compatible using the Carrier
Comfort Network (CCN) and WSHP units utilizing
PremierLink CCN controllers.
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, 11/2 in.).
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-
1
/2, 3/4, 1, 11/4, 11/2 in.).
able (
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
/4, 11/2 in.).
1
1
/2, 3/4, 1,
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, 11/2 in.).
Hose kit assemblies provide all the necessary components 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 automatic 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. Sensors are available for wall (wired and wireless) or duct mounted applications.
PremierLink™ accessories are available to provide a
fully integrated WSHP DDC system. Accessories include
supply air temperature sensors (with override and/or setpoint adjustment), communicating room sensors, CO
sen-
2
sors (for use in demand control ventilation), and linkage
thermostats (to control multiple units from one thermostat).
7
Page 8
Options and accessories (cont)
CARRIER AQUAZONE™ THERMOSTATS
(FOR USE WITH REMOTE THERMOSTAT UNITS)
Carrier
®
Pm
AUTO
7-DAY PROGRAMMABLE/LIGHT-ACTIVATED
PROGRAMMABLE
COOL
HEAT
R
COOL
AUTO
HEAT
7-DAY PROGRAMMABLE FLUSH MOUNT
5-DAY PROGRAMMABLE/NON-PROGRAMMABLE
PREMIERLINK™ COMMUNICATING CONTROL
8
Page 9
Dimensions
50KQL BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING
1.75
(44.5)
Filter located inside and at
top of air inlet area. Push
tabs back and down to release
filter for replacement.
AIR INLET AREA
33.5
(851)
Control Access Door
48.0
(1219)
48.0
(1219)
BOTTOM VIEW
FRONT VIEW
1.9
(48)
10.0
(254)
16
(406)
5
(127)
30
Air
Inlet
R.H. Pipe &
Electric Area
0.75
(19)
Discharge
Air
°
SIDE
VIEW
11.5
(292)
12.0
(305)
3.5
(88.9)
*23.9
(607)
*2.9
(74)
1 (25)
1 (25)
REAR
ACCESS
4.5
(114)
20
(508)
REAR VIEW
1.63
(41)
DAMPER OPENING*
48
(1219)
11.75
(298)
3.5
(89)
0.59
(15)
9.81
(249)
*Dimension shown is with 3 in. subbase. Add 2 in. to dimension shown for 5 in. subbase.
NOTES:
1. Dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Optional autoflow valve, motorized water valve and disconnect box are shown.
Entering-Air Temperature db . . . . . . . . . . . . 80 F
Entering-Air Temperature wb . . . . . . . . . . . . .66 F
II Determine the following design parameters.
Determine entering water temperature, water flow
rate (gpm), airflow (cfm), water flow pressure drop
and design wet and dry bulb temperatures. Airflow
cfm should be between 300 and 450 cfm per ton.
For applications using multiple units, the water pressure drop should be kept as close as possible across
units to make water balancing easier. Enter the
50KQL12 Performance Data tables and find the
proper indicated water flow and water temperature.
NOTE: It is quite normal for water source heat
pumps to be selected on cooling capacity only since
the heating output is usually greater than the cooling
capacity. Heating capacity is selected based on
different entering water conditions than cooling
capacity.
IV Determine the correction factors associated
with the variable factors of dry bulb and wet
bulb using the Corrections Factor tables
found in this book.
Using the following formulas to determine the correction factors of dry bulb and wet bulb:
a) Corrected Total Cooling = tabulated total cooling
x wet bulb correction x airflow correction.
b) Corrected Sensible Cooling = tabulated sensible
cooling x wet/dry bulb correction x airflow
correction
V Determine entering air and airflow correction
using the Corrections Factor tables found in
this book.
The nominal airflow for 50KQL12 is 350 cfm. The
design parameter is 325 cfm.
308/350 = 88% of nominal airflow
Use the 88% row in the Nominal Cfm Correction
table.
The Entering Air Temperature wb is 66 F. Use the
66.2 F row in the Entering Air Correction table.
Using the following formulas to determine the cor-
rection factors of entering air and airflow correction:
TableEnt Air AirflowCorrected
Corrected
Total Cooling= 12,200 x 0.983 x 0.979 = 11,741
Corrected
Sensible Cooling = 89,900 x 1.036 x 0.936 =8,630
Corrected
Heat of Rejection = 15,900 x 0.985 x 0.979 = 15,333
Compare the corrected capacities to the load
requirements established in Step I. If the capacities
are within 10% of the load requirements, the equipment is acceptable. It is better to undersize than
oversize as undersizing improves humidity control,
reduces sound levels and extends the life of the
equipment.
VI Water temperature rise calculation and
assessment.
Calculate the water temperature rise and assess the
selection using the following calculation:
Actual Temperature
Rise
Correction of Heat Rejection
=
gpm x 500
For example, using the Corrected Heat of Rejection
from the last step:
Actual Temperature
Rise
=
3.1 x 500
15,333
=9.9 F
If the units selected are not within 10% of the load
calculations, review what effect changing the gpm,
water temperature and/or airflow will have on the
corrected capacities. If the desired capacity cannot
be achieved, select the next larger or smaller unit
and repeat Steps I through VI.
14
Page 15
VII ARI/ISO 13256-1 Conversion
Performance standard ARI/ISO 13256-1 became
effective on January 1, 2000 and replaced the existing ARI Standards 320 Water-Loop Heat Pumps
(WLHP), 325 Ground-Water Heat Pumps (GWHP),
and 330 Ground-Loop Heat Pumps (GLHP).
The ARI/ISO Standard incorporates a consistent
rating methodology for including fan and pump
energy for calculating cooling capacity, heating
capacity, and energy efficiency ratios (EER). This
simplifies the use of rating data for heat pump performance modeling in seasonal energy analysis calculations, and allows for direct rating comparisons
across applications.
a) ISO Capacity and Efficiency Equations
The following equations are used to calculate and
correct cooling capacity, heating capacity, and
respective EER:
ISO Cooling Capacity = (Cooling Capacity in
Btuh) + (Fan Power Correction in Watts x 3.412)
ISO Cooling EER = (ISO Cooling Capacity in
Btuh/3.412)/(Power Input in watts – fan power
correction in watts + pump power correction in
watts) = Watts/Watts
NOTE: Do not divide ISO Cooling Capacity by
3.412 to obtain Btuh/Watts.
ISO Heating Capacity = (Heating Capacity in
Btuh) – (Fan Power Correction in Watts x 3.412)
ISO Heating EER = (ISO Heating Capacity in
Btuh/3.412)/(Power Input in watts – fan power
correction in watts + pump power correction in
watts) = Watts/Watts
NOTE: Do not divide ISO Heating Capacity by
3.412 to obtain Btuh/Watts.
b) Identify the design conditions corrected for air and
water conditions.
Airflow Cfm = 308 Cfm
Water Flow
(Based upon 10 F rise in temp) = 3.1 GPM
External Static Pressure = 0.0 in. wg (non-ducted
application)
Water Pressure Drop = 3.7 ft of head
Power input = 1,067 watts
Cooling Capacity = 11,741 Btuh
c) Perform Fan Power Correction Adjustment
Use the following formula to calculate Fan Power
Correction:
Fan Power
Correction = (Cfm x 0.472) x (External Static
Pressure x 249)/300 = Watts
= (308 x 0.472) x (0 x 249)/300
= 0 Watts
d) Perform Pump Power Correction Adjustment
Use the following formula to calculate Pump
Power Correction:
Pump Power
Correction= (GPM x 0.0631) x (Pressure Drop
x 2,990)/300
= Watts
= (3.1 x 0.0631) x
(3.7 x 2,990)/300
= 7.2 Watts
e) Perform capacity and EER calculations
Use the following formula to calculate capacity
and EER:
ISO Cooling
Capacity= (Cooling Capacity) + (Fan Power
Correction x 3.412)
= 11,741 + (0 x 3.412)
= 11,741 Btuh
f) Perform Corrections by using the ISO Equations
ISO EER = (ISO Cooling Capacity/3.412)/
(Power Input – Fan Power Correction + Pump Power Correction)
= Watts/Watts
NOTE: Do not divide ISO Cooling Capacity by
3.412 to obtain Btuh/Watts.
= (11,741/3.412)/(1,067 – 0 + 7.2)
= 3.20 Watts/Watt
= 10.93 Btuh/Watt
15
Page 16
Performance data
50KQL07 — NOMINAL AIRFLOW 240 CFM
EWT
GPM
(F)
1.01.61.8
20
1.42.52.7
1.93.74.25.50.503.8
1.01.41.69.76.90.710.3610.96.00.514.3
30
1.42.22.49.86.90.700.3310.96.30.524.5
1.93.33.79.96.90.700.3110.96.40.524.7
1.00.91.09.46.80.720.4110.86.90.535.1
40
1.41.41.79.66.90.710.3710.97.20.545.4
1.92.12.59.76.90.710.3610.97.40.555.6
1.00.91.09.06.70.740.4610.67.80.565.9
50
1.41.41.69.36.80.730.4210.88.20.576.3
1.92.02.59.56.80.720.4010.88.40.576.5
1.00.80.98.66.50.760.5210.48.70.586.7
60
1.41.31.58.96.60.740.4810.59.20.597.2
1.91.92.49.16.70.740.4610.69.40.607.4
1.00.70.98.16.30.780.5810.19.60.617.6
70*
1.41.21.48.56.50.760.5310.310.20.628.1
1.91.82.28.66.50.760.5110.410.50.638.3
1.00.70.87.66.10.790.659.810.60.638.4
80
1.41.11.38.06.20.780.6010.011.10.649.0
1.91.62.08.16.30.780.5710.111.50.659.3
1.00.60.77.45.90.800.689.711.00.648.9
85*
1.41.01.37.76.10.790.639.911.60.659.4
1.91.51.97.96.20.780.6110.012.00.669.7
1.00.60.77.25.80.810.729.611.50.659.3
90
1.41.01.27.56.00.800.679.812.10.669.9
1.91.41.97.66.10.790.649.812.50.6710.2
1.00.60.76.75.50.810.819.5
100
1.40.91.17.05.70.810.759.6
1.91.31.77.25.80.810.729.6
1.00.50.76.45.20.810.919.5
110
1.40.91.16.65.40.810.849.5
1.91.31.76.75.50.810.819.5
LEGEND
DB— Dry Bulb
EAT— Entering Air Temperature (F)
EWT— Entering Water Temperature (F)
GPM — Gallons per Minute
MBtuh — Btuh in Thousands
SC— Sensible Capacity (MBtuh)
SHR— Sensible Heat Ratio
TC— Total Capacity
THA— Total Heat of Absorption (MBtuh)
THR— Total Heat of Rejection (MBtuh)
WB— Wet Bulb
WLHP — Water Loop Heat Pump
*ARI 320 points (bold printing) are shown for comparison purposes
only. These are not certified data points.
WATER PRESSURE DROP (ft wg)COOLING — EAT 80FDB/67FWBHEATING—EAT70F
Without Motorized
Val ve
With Cv = 2.9
MOPD = 125 psi
TCSCSHR
Input
Power
Operation not recommended
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pressure differential at unit cannot exceed MOPD or water valve cannot close)
2. Interpolation is permissible, extrapolation is not.
3. All entering air conditions are 80 F db and 67 F wb in cooling and
70 F db in heating.
4. All performance data is based upon the lower voltage of dual voltage rated units. See Performance Correction Tables on page 21
for operating conditions other than those listed above.
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and
59 F wb in heating.
THRTC
Operation not recommended
Operation Not Recommended
Input
Power
THA
16
Page 17
50KQL09 — NOMINAL AIRFLOW 300 CFM
EWT
GPM
(F)
1.32.22.4
20
1.93.94.4
2.56.27.07.20.635.1
1.31.82.011.37.60.670.4813.07.50.665.2
30
1.93.23.611.77.70.660.4413.27.60.675.4
2.55.05.811.97.80.660.4213.37.70.675.4
1.31.31.510.97.40.680.5412.88.10.695.8
40
1.92.63.011.27.50.670.4912.98.40.706.0
2.54.04.711.37.60.670.4713.08.60.716.2
1.31.31.510.67.20.680.6012.69.10.726.6
50
1.92.52.910.87.30.680.5612.79.40.736.9
2.53.94.610.97.40.670.5312.89.70.747.1
1.31.21.410.27.10.690.6712.510.10.757.6
60
1.92.42.810.47.20.690.6212.610.60.778.0
2.53.74.410.67.20.680.6012.610.90.778.2
1.31.21.39.86.90.710.7512.411.30.798.6
70
1.92.22.710.17.00.700.7012.511.90.809.1
2.53.54.210.27.10.690.6712.512.20.819.4
1.31.11.39.36.80.730.8312.112.50.829.7
80
1.92.12.59.66.90.710.7812.313.10.8310.3
2.53.24.09.86.90.710.7512.413.50.8410.6
1.31.11.29.06.70.740.8712.013.10.8310.2
85
1.92.02.49.46.80.720.8212.213.70.8510.8
2.53.13.99.66.90.720.7912.314.10.8611.2
1.31.01.28.76.50.750.9211.813.70.8510.8
90
1.92.02.49.16.70.740.8612.014.30.8711.4
2.53.03.89.36.80.730.8312.114.70.8811.7
1.31.01.27.96.20.791.0111.3
100
1.91.92.38.46.40.770.9511.6
2.53.03.78.66.50.760.9211.8
1.31.01.26.95.70.831.1010.7
110
1.92.02.47.56.00.801.0411.1
2.53.13.87.86.20.791.0211.3
LEGEND
DB— Dry Bulb
EAT— Entering Air Temperature (F)
EWT— Entering Water Temperature (F)
GPM — Gallons per Minute
MBtuh — Btuh in Thousands
SC— Sensible Capacity (MBtuh)
SHR— Sensible Heat Ratio
TC— Total Capacity
THA— Total Heat of Absorption (MBtuh)
THR— Total Heat of Rejection (MBtuh)
WB— Wet Bulb
WLHP — Water Loop Heat Pump
*ARI 320 points (bold printing) are shown for comparison purposes
only. These are not certified data points.
WATER PRESSURE DROP (ft wg)COOLING — EAT 80FDB/67FWBHEATING—EAT70F
Without Motorized
Val ve
With Cv = 2.9
MOPD = 125 psi
TCSCSHR
Input
Power
Operation not recommended
THRTC
Operation not recommended
Input
Power
Operation Not Recommended
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pressure differential at unit cannot exceed MOPD or water valve cannot close)
2. Interpolation is permissible, extrapolation is not.
3. All entering air conditions are 80 F db and 67 F wb in cooling and
70 F db in heating.
4. All performance data is based upon the lower voltage of dual voltage rated units. See Performance Correction Tables on page 21
for operating conditions other than those listed above.
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and
59 F wb in heating.
THA
17
Page 18
Performance data (cont)
50KQL12 — NOMINAL AIRFLOW 350 CFM
EWT
GPM
(F)
1.62.16.5
20
2.33.811.4
3.16.119.68.70.786.0
1.61.86.514.89.80.660.6016.89.40.816.6
30
2.33.311.414.99.90.660.5516.89.70.836.9
3.15.319.615.09.90.660.5316.89.90.837.1
1.61.66.514.49.60.670.6816.710.60.867.7
40
2.33.111.414.79.70.660.6216.811.00.878.0
3.14.819.614.89.80.660.5916.811.20.888.3
1.61.66.514.09.50.680.7616.611.80.898.8
50
2.32.911.414.39.60.670.7016.712.30.919.2
3.14.519.614.59.60.670.6716.712.60.929.5
1.61.56.513.59.30.690.8616.413.10.939.9
60
2.32.711.413.89.40.680.7916.513.60.9410.4
3.14.319.614.09.50.680.7616.613.90.9510.7
1.61.46.512.99.10.710.9716.214.30.9611.0
70
2.32.611.413.39.20.690.9016.314.90.9711.6
3.14.119.613.59.30.690.8616.415.20.9811.9
1.61.36.512.28.90.731.1015.915.50.9812.1
80
2.32.511.412.79.00.711.0116.116.00.9912.7
3.13.919.612.99.10.710.9716.216.31.0012.9
1.61.36.511.88.80.741.1615.816.00.9912.6
85
2.32.411.412.38.90.721.0716.016.61.0013.2
3.13.819.612.69.00.721.0316.116.91.0113.4
1.61.36.511.58.60.751.2315.716.51.0013.1
90
2.32.311.412.08.80.731.1415.817.11.0113.6
3.13.719.612.28.90.731.0915.917.31.0113.9
1.61.26.510.78.40.781.3715.4
100
2.32.211.411.28.60.761.2715.6
3.13.419.611.58.60.751.2315.7
1.61.16.59.98.10.821.5215.1
110
2.32.011.410.48.30.791.4215.3
3.13.219.610.78.40.781.3715.4
LEGEND
DB— Dry Bulb
EAT— Entering Air Temperature (F)
EWT— Entering Water Temperature (F)
GPM — Gallons per Minute
MBtuh — Btuh in Thousands
SC— Sensible Capacity (MBtuh)
SHR— Sensible Heat Ratio
TC— Total Capacity
THA— Total Heat of Absorption (MBtuh)
THR— Total Heat of Rejection (MBtuh)
WB— Wet Bulb
WLHP — Water Loop Heat Pump
*ARI 320 points (bold printing) are shown for comparison purposes
only. These are not certified data points.
WATER PRESSURE DROP (ft wg)COOLING — EAT 80FDB/67FWBHEATING—EAT70F
Without Motorized
Val ve
With Cv = 2.9
MOPD = 125 psi
TCSCSHR
Input
Power
Operation not recommended
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pressure differential at unit cannot exceed MOPD or water valve cannot close)
2. Interpolation is permissible, extrapolation is not.
3. All entering air conditions are 80 F db and 67 F wb in cooling and
70 F db in heating.
4. All performance data is based upon the lower voltage of dual voltage rated units. See Performance Correction Tables on page 21
for operating conditions other than those listed above.
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and
59 F wb in heating.
THRTC
Operation not recommended
Operation Not Recommended
Input
Power
THA
18
Page 19
50KQL15 — NOMINAL AIRFLOW 400 CFM
EWT
GPM
(F)
1.81.41.8
20
2.73.03.9
3.64.96.59.90.936.7
1.81.21.616.511.20.670.6818.810.40.957.2
30
2.72.63.416.611.10.670.6218.710.70.967.4
3.64.25.716.611.00.670.6018.610.90.977.6
1.81.31.616.311.10.680.7618.911.60.998.2
40
2.72.33.116.511.20.680.7018.912.11.008.7
3.63.65.116.511.20.670.6718.812.31.018.9
1.81.21.615.811.00.700.8518.713.11.039.6
50
2.72.23.116.211.10.690.7818.813.71.0510.1
3.63.55.016.311.10.680.7518.914.01.0510.4
1.81.21.615.210.80.710.9418.414.71.0711.1
60
2.72.13.015.610.90.700.8718.615.41.0911.7
3.63.44.915.811.00.690.8418.715.81.0912.1
1.81.11.514.310.50.731.0417.916.41.1012.6
70
2.72.02.914.910.70.720.9718.217.21.1213.4
3.63.24.815.210.80.710.9418.417.61.1313.8
1.81.11.513.410.20.761.1617.318.01.1314.1
80
2.72.02.814.010.40.741.0817.718.81.1514.9
3.63.14.614.310.50.731.0517.919.31.1515.3
1.81.11.512.910.00.781.2117.018.81.1414.8
85
2.71.92.813.510.30.761.1417.419.61.1515.6
3.63.04.613.910.40.751.1017.620.01.1616.0
1.81.01.412.39.90.801.2716.719.51.1515.5
90
2.71.92.713.010.10.781.2017.120.21.1616.3
3.63.04.513.410.20.761.1617.320.61.1616.6
1.81.01.411.19.40.851.4015.9
100
2.71.82.711.99.70.821.3216.4
3.62.94.412.29.80.801.2816.6
1.81.01.49.88.90.911.5315.0
110
2.71.82.710.69.20.871.4515.5
3.62.94.411.09.40.851.4115.8
LEGEND
DB— Dry Bulb
EAT— Entering Air Temperature (F)
EWT— Entering Water Temperature (F)
GPM — Gallons per Minute
MBtuh — Btuh in Thousands
SC— Sensible Capacity (MBtuh)
SHR— Sensible Heat Ratio
TC— Total Capacity
THA— Total Heat of Absorption (MBtuh)
THR— Total Heat of Rejection (MBtuh)
WB— Wet Bulb
WLHP — Water Loop Heat Pump
*ARI 320 points (bold printing) are shown for comparison purposes
only. These are not certified data points.
WATER PRESSURE DROP (ft wg)COOLING — EAT 80FDB/67FWBHEATING—EAT70F
Without Motorized
Val ve
With Cv = 2.9
MOPD = 125 psi
TCSCSHR
Input
Power
Operation not recommended
THRTC
Operation not recommended
Input
Power
Operation Not Recommended
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pressure differential at unit cannot exceed MOPD or water valve cannot close)
2. Interpolation is permissible, extrapolation is not.
3. All entering air conditions are 80 F db and 67 F wb in cooling and
70 F db in heating.
4. All performance data is based upon the lower voltage of dual voltage rated units. See Performance Correction Tables on page 21
for operating conditions other than those listed above.
5. ARI/ISO 13256-1 (WLHP application) certified conditions are 86 F
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and
59 F wb in heating.
THA
19
Page 20
Performance data (cont)
50KQL19 — NOMINAL AIRFLOW 460 CFM
EWT
GPM
(F)
2.43.03.7
20
3.66.07.5
4.89.712.511.21.057.6
2.42.12.820.113.20.660.8122.812.21.098.5
30
3.64.25.820.513.40.660.7623.112.61.108.9
4.86.89.620.713.50.650.7423.212.81.119.0
2.42.02.719.412.90.660.9022.513.81.149.9
40
3.63.85.419.813.10.660.8422.714.31.1610.3
4.86.29.020.013.20.660.8222.814.51.1710.6
2.42.02.618.712.50.671.0022.115.51.2111.4
50
3.63.75.219.212.70.660.9422.416.01.2311.9
4.86.08.819.412.80.660.9122.516.31.2412.1
2.41.92.518.012.10.671.1121.817.21.2712.8
60
3.63.55.118.512.40.671.0422.017.81.3013.4
4.85.88.518.712.50.671.0122.118.11.3113.6
2.41.82.417.211.80.681.2321.418.81.3414.2
70
3.63.34.917.712.00.681.1621.619.41.3614.8
4.85.58.217.912.10.671.1221.819.81.3715.1
2.41.72.416.311.40.701.3620.920.31.4015.6
80
3.63.24.716.811.60.691.2821.220.91.4216.1
4.85.27.917.111.70.691.2421.321.31.4316.4
2.41.62.315.811.20.711.4320.721.01.4216.2
85
3.63.14.616.411.40.701.3521.021.61.4416.7
4.85.07.816.711.50.691.3121.121.91.4616.9
2.41.62.315.311.00.721.5020.421.71.4516.7
90
3.63.04.615.911.20.711.4220.722.21.4717.2
4.84.97.716.211.30.701.3820.922.51.4817.4
2.41.62.214.110.50.751.6519.8
100
3.62.94.514.810.80.731.5620.1
4.84.87.515.110.90.721.5220.3
2.41.62.312.810.00.781.8119.0
110
3.63.04.513.610.30.761.7219.4
4.84.97.613.910.50.751.6819.6
LEGEND
DB— Dry Bulb
EAT— Entering Air Temperature (F)
EWT— Entering Water Temperature (F)
GPM — Gallons per Minute
MBtuh — Btuh in Thousands
SC— Sensible Capacity (MBtuh)
SHR— Sensible Heat Ratio
TC— Total Capacity
THA— Total Heat of Absorption (MBtuh)
THR— Total Heat of Rejection (MBtuh)
WB— Wet Bulb
WLHP — Water Loop Heat Pump
*ARI 320 points (bold printing) are shown for comparison purposes
only. These are not certified data points.
WATER PRESSURE DROP (ft wg)COOLING — EAT 80FDB/67FWBHEATING—EAT70F
Without Motorized
Val ve
With Cv = 2.9
MOPD = 125 psi
TCSCSHR
Input
Power
Operation not recommended
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pressure differential at unit cannot exceed MOPD or water valve cannot close)
2. Interpolation is permissible, extrapolation is not.
3. All entering air conditions are 80 F db and 67 F wb in cooling and
70 F db in heating.
4. All performance data is based upon the lower voltage of dual voltage rated units. See Performance Correction Tables on page 21
for operating conditions other than those listed above.
5. ARI//ISO 13256-1 (WLHP application) certified conditions are 86 F
EWT, 80.6 db and 66.2 F wb in cooling and 68 F EWT, 68 F db and
59 F wb in heating.
DB — Dry Bulb
EAT — Entering Air Temperature (F)
SC — Sensible Capacity
TC— Total Capacity
THA — Total Heat of Absorption
THR — Total Heat of Rejection
2. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 208 v for 208-230 v
units.
3. All units are ARI/ISO 13256-1 rated on high fan speed.
4. All units are designed and rated for zero external static pressure (non-ducted) application.
RATED
AIRFLOW
(cfm)
Low SpeedHigh Speed
AIRFLOW (cfm)
THA
21
Page 22
Application data
Aquazone™ water source heat pump products are available
in a flexible, efficient array of models, which can be used in
all types of water loop, ground water, and ground loop
type systems. Use Aquazone products to provide optimal
energy efficient solutions and adapt to the most challenging design requirements.
AQUAZONE PRODUCT GUIDE
50 SERIES
50RHC,RVC
Horizontal/Vertical
50RHR,RVR
Horizontal/Vertical
50RHS,RVS
Horizontal/Vertical
50HQ,VQ
Horizontal/Vertical
50KQ
50RTG
50RWS
TYPE
SIZE (tons)
Standard
Efficiency
1
/2-5
High
Efficiency
1
/2-5
Premium
Efficiency
1
/4-6
1
Large Capacity
1
6
/2-25
Console
1
/2-11/
2
Rooftop
3-20
Water-to-
Water
3-30
APPLICATION
Efficient, compact, low cost
alternative for retrofit or new
boiler/tower systems.
Efficient, adaptable unit for
new boiler/tower, ground
water, or ground loop systems.
Premium, ultra efficient unit for
new boiler/tower, ground
water, or ground loop systems
Designed to handle large
zoned areas for all
applications.
Attractive design for finished
interior, under-window
installations.
Economical solution for IAQ
problems and tempering
ventilation air.
Used to pre-heat or cool
air and can be used as a
stand-alone or supplemental
boiler/chiller in most hydronic
heating applications. Also
conditions process fluids,
lubricants and refrigerants.
Water loop system
Water loop (or boiler/tower) system applications typically
include a number of units plumbed to a common piping
system. For optimal performance, design this system between 2.25 and 3 gpm per ton of cooling capacity. The
system is comprised of highly efficient packaged reverse
cycle heat pump units interconnected by a water loop. The
water circuit serves as both a sink and source for heat absorption and rejection and is designed for entering water
temperatures between 60 F and 90 F. Within this temperature range, units can heat or cool from the same water
source. Transferring heat from warm to cold spaces in the
building, whenever they coexist, conserves energy rather
than creating new heat.
Refer to the CarrierWater Source Heat Pump Sys-tem Design Guide for assistance designing water loop
systems. The guide includes a practical approach for the
latest and most current design recommendations including:
• Horizontal, vertical, console, rooftop and water-to-
water product applications.
• Ventilation methods and system design including energy
recovery.
• Acoustical considerations for different product types.
• Addressing IAQ issues such as condensate removal,
humidity control.
• Air distribution design including diffuser selection/
layout and ductwork design.
• Hydronic system design including pipe sizing/layout
and boiler/tower sizing.
• Control configurations such as stand alone, DDC, DCV,
and VVT®.
• System variations such as a system without a boiler,
variable pumping, and VAV for interior use.
Ground water systems
To use Aquazone units in ground water applications, you
should specify extended range. This will provide factoryinstalled coaxial coil insulation to prevent condensate from
dripping when entering water temperatures are below
60 F. In addition, the copper coaxial coil installed on the
Aquazone units may not be suitable for all water conditions. Refer to the Water Conditioning section for proper
coaxial coil material selection.
Surface water system — This system is typically located
near a lake or pond. In this application, the loop can be
submerged in a series of coils beneath the water surface.
The number of coils required depends on system load and
design. This application requires minimum piping and
excavation.
Open loop system — Use this system where ground
water is plentiful. In this application, ground water is
pumped through supply piping from the well to the building. The water is then pumped back into the ground
through a discharge well as it leaves the building. An additional heat exchanger is usually installed between the building water piping system and the ground water piping system. This design limits piping and excavation.
Aquazone units include a standard TXV and are rated to
extremely low temperatures to self-adjust the refrigeration
circuit. Therefore, open loop systems do not require water
regulating valves. Use a slow opening/closing solenoid
valve to conserve water.
Ground loop systems
There are many commonly specified designs for ground
loop applications. Typical designs include vertical loops
and horizontal loops. In some applications, water is piped
from the ground or lake directly to the water source heat
pump. This system only requires piping to get the water
from the source to the unit.
NOTE: When utilizing Aquazone water source heat pumps
in ground loop systems, refer to the design considerations
in the ground water system section.
Horizontal ground loop — Use this system when adequate space is available and trenching can be easily accomplished. A series of parallel pipes are laid out in trenches 3
to 6 feet below the ground surface, and then back-filled.
Often, multiple pipes are used to maximize each trench’s
heat transfer capability. Ground conditions, heating and
cooling requirements, and system design determine piping
requirements and ground loop field size.
Vertical ground loop — Use this system in vertical borehole applications. This design is well suited for retrofit
applications when space is limited or where landscaping is
already complete and minimum site disruption is desired.
The vertical ground loop system contains a single loop of
pipe inserted into a hole. The hole is back-filled and
grouted after the pipe is inserted. The completed loop is
22
Page 23
concealed below ground. The number of loops required depends on ground conditions, heating and cooling requirements, and the depth of each hole.
Hybrid systems — In some applications, it may be bene-
ficial to incorporate a cooling tower into the ground loop
system to reduce the overall cost. A Hybrid System discards excess heat into the air and increases the cooling
performance of the ground loop.
Condensate drainage
Connect the console unit condensate drain to the building
condensate drain with a flexible, non-pressure rate plastic
hose. Be sure to avoid kinks in this hose to ensure an unobstructed flow of condensate from the unit to the drain.
The condensate hose’s horizontal run is usually too short
to pose any drainage problems, however, make sure this
line is pitched at least 1 inch for every 10 feet of run (in the
direction of the flow.) Avoid low points and unpitched
piping since dirt collects in these areas and may cause stoppage and overflow.
Installing a trap or drain in the field is not required unless
specified by local codes. The 50KQL units are designated
in a blow-thru configuration. The condensate drain pan is
located on the outlet side of the blower so that the pressure
in the drain pan is higher than the atmospheric pressure.
Water conditioning
In some applications, maintaining proper water quality
may require higher corrosion protection for the water-torefrigerant heat exchanger. Water quality varies from location to location and is unique for each job. Water characteristics such as pH value, alkalinity, hardness, and specific
conductance are important when considering any WSHP
application. Water typically includes impurities and hardness that must be removed. The required treatment depends on the water quality as well as system type. Water
problems fall into three main categories:
1. Scale formation caused by hard water reduces the
heat transfer rate and increases the water pressure
drop through the heat exchanger. As water is heated,
minerals and salts are precipitated from a solution
and deposited on the inside surface of the pipe or
tube.
2. Corrosion is caused by absorption of gases from the
air coupled with water on exposed metal. Corrosion
is also common in salt-water areas.
3. Organic growths, such as algae, can reduce the heat
transfer rate by forming an insulating coating on the
inside tube surface. Algae can also promote corrosion
by pitting.
NOTE: In most commercial water loop applications, Aquazone™ WSHP units use copper water-to-refrigerant heat
exchanger. Units can also be equipped with a Cupronickel
heat exchanger for applications where water is outside the
copper heat exchanger’s standard contaminant limits.
WATER QUALITY GUIDELINES
CONDITIONACCEPTABLE LEVEL
pH
Total Hardness
Iron OxidesLess than 1 ppm.
Iron BacteriaNo level allowable.
Corrosion*
Brackish
*If the concentration of these corrosives exceeds the maximum allowable level,
then the potential for serious corrosion problems exists.
†Sulfides in the water quickly oxidize when exposed to air, requiring that no agita-
tion occur as the sample is taken. Unless tested immediately at the site, the
sample will require stabilization with a few drops of one Molar zinc acetate solution, allowing accurate sulfide determination up to 24 hours after sampling. A low
pH and high alkalinity cause system problems, even when both values are within
ranges shown. The term pH refers to the acidity, basicity, or neutrality of the
water supply. Below 7.0, the water is considered to be acidic. Above 7.0, water is
considered to be basic. Neutral water contains a pH of 7.0.
NOTE: To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is
equivalent to ppm.
7 to 9 range for copper. Cupronickel may be
used in the 5 to 9 range.
Calcium and magnesium carbonate should not
exceed 20 grains per gallon (350 ppm).
Use Cupronickel heat exchanger when
concentrations of calcium or sodium chloride
are greater than 125 ppm are present.
(Seawater is approximately 25,000 ppm.)
Level
0.5 ppmCu
0.5 ppmCu
Coaxial
Metal
Acoustical design
Sound power levels represent the sound that the source, the
WSHP unit, produces with no regard to attenuation between the source and the space. Acoustical design goals are
necessary to provide criteria for occupied spaces. These
goals help ensure that people can be comfortable and communicate effectively over the background noise of the airconditioning system and other background noise sources.
Acoustical design goals are desirable sound pressure levels
within a given conditioned space and are represented by Noise
Criteria (NC) curves. Noise Criteria (NC) curve levels represent
a peak over a full frequency spectrum. A high value in a low
frequency band has the same effect on NC level as a lower value in a high frequency band. It is important that sound levels
be balanced over the entire spectrum relative to the NC curve.
The lower the NC criteria curve, the more stringent the room
acoustical design must be to meet the design goals.
It is important to know how to convert the unit ratings
from sound power (Lw) to sound pressure (Lp). This conversion depends on the specifics of the installation’s acoustical environment. Assessing an area’s acoustical design requires that you compare the sound pressure (Lp) with the
NC curve for the selected area.
The resulting calculations are compared to the NC curve
selected for the area to assess the acoustical design.
Some of the factors that affect conversion of sound
power to sound pressure and consequent NC level include:
Analyzing the projected sound level in the conditioned
space caused by a WSHP unit is quite involved. The key is
to have good sound power ratings (Lw) in dB on the equipment to determine the ductwork, ceiling and room sound
attenuation effect.
Console units
With console units, the fan and compressor are located
within the space, and only the casing design attenuates the
transmission of sound sources into the space. The designer
should carefully review the manufacturer’s acoustical data
when selecting console units and use lower fan speeds to
minimize space noise.
Operating limits
Environment
This equipment is designed for indoor installation ONLY.
Power supply
A voltage variation of ± 10% of nameplate utilization voltage is acceptable.
Starting conditions
The 50KQL unit will start and operate in an ambient temperature of 50 F, with entering air temperature at 50 F,
with entering water temperature at 60 F, with both air and
water at the flow rates used in the ARI/ISO Standard
13256-1 rating test, for initial start-up in winter.
NOTE: These are not normal or continuous operating
conditions. Such a start-up should be used to bring the
building space up to occupancy temperature.
AIR LIMITS
50KQL
Min. Ambient Air50 F50 F
Rated Ambient Air80 F66 F
Max. Ambient Air100 F86 F
Min. Entering Air50 F50 F
Rated Entering Air, db/wb80/66 F68 F
Max. Entering Air, db/wb100/82 F80 F
CoolingHeating
WATER LIMITS
50KQL
Min. Entering Water30 F*21 F*
Normal Entering Water86 F70 F
Max. Entering Water110 F90 F
LEGEND
db — Dry Bulb
wb — Wet Bulb
*Requires optional extended range insulation package when operating below the dew point.
NOTES:
1. Minimum Air and Water conditions can only be used at ARI/ISO 13256-1 flow rates.
2. The 50KQL units may have up two values at maximum or minimum with all other parameters at normal conditions.
CoolingHeating
Solenoid valves
In applications using variable flow pumping, solenoid
valves can be factory installed and operated from the control board in the Aquazone™ WSHP unit.
Freeze protection
Applications where systems are exposed to outdoor
temperatures below freezing (32 F) must be protected from
freezing. The most common method of protecting water
systems from freezing is adding glycol concentrations into
the water. Use design care when selecting both the type
and concentrations of glycol due to the following:
• Equipment and performance may suffer with high concentrations of glycol and other antifreeze solutions
• Loss of piping pressure may increase greatly, resulting
in higher pumping costs
• Higher mixture viscosity may cause excess corrosion
and wear on the entire system
• The water’s acidity may be greatly increased, promoting
corrosion
Glycol promotes galvanic corrosion in systems of dissimilar
metals. The result is corrosion of one metal by the other,
causing leaks.
Electrical data
50KQL
07
09
12
15
19
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA — Locked Rotor Amps
RLA — Rated Load Amps
AL— Alarm Relay Contacts
BM— Blower Motor
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
HP— High-Pressure SwitchJW1— Jumper Wire for Alar m
LOC— Loss of Charge Pressure Switch
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
UMT— Unit Mounted Thermostat
WV— Wat er Val ve
----------Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
LEGEND
>
>
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-Temperature
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
*Optional wiring.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with local
codes.
3. Transformer is wired to 115-V (WHT) lead for
115/1/60 units, 265-V (BRN) lead for 265/1/60
units or 208-V (RED) lead for 208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1
and insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
4. FP1 thermistor provides freeze protection for
WATER. When using ANTI-FREEZE solutions,
cut JW3 jumper.
5. Typical unit-mounted thermostat wiring shown.
6. 24-V alarm signal shown. For dry alarm contact,
cut JW1 jumper and dry contact will be available
between AL1 and AL2.
7. Transformer secondary ground via Complete C
board standoffs and screws to control box.
(Ground available from top two standoffs as
shown.)
25
Page 26
Typical wiring schematics (cont)
MANUAL CHANGEOVER WITH DELUXE D CONTROLLER
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
RED
BLK
2A
ORG
2
RED
3
RED
1A
PBS
1B
REDGRY
565A
GRY
PBSRED
6A
RED
77A
GRY
CAP
DELUXE D
CONTROL
BR 2
(HI)
UMT
AL— Alarm Relay Contacts
BM— Blower Motor
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
HP— High-Pressure SwitchJW1— Jumper Wire for Alarm
LOC— Loss of Charge Pressu re Switch
NLL— Night Low Limit Switch
OS— Override Switch
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
UMT— Unit Mounted Thermostat
WV— Wate r Valve
----------Field Line Voltage Wiring
Field Low-Voltage Wiring
UMT
3A
YEL
GRY
1
YEL YEL YEL
CLOSED-UNOCCUPIED
OS
WHTRED
NLL
GROUND
LOG
PB
PBS
TIME CLOCK
SEE NOTE 2
OPTIONAL
CORD
CONNECTION
SEE
NOTE 7
YEL
ORG
2
3
BRN
BRN
DM
ORG
RED
BRN
WHT
GRY
YEL
WV
TRANSFORMER
LEGEND
O/W2
AL1
COM
COM
CR
Y1
Y2
W1
G
R
C
AL2
NSB
ESD
OVR
P3
NO1
NC1
NO2
NC2
BR 1
(LO)
OS
P1
P2
R
C
H
A
R
R
SEE
NOTE 3
CB*
TRANS
24V
YEL
BLU
C
R
1
2
3
4
5
6
7
8
ALARM
RELAY
ACC1
RELAY
ACC2
RELAY
DIP SWITCH PACKAGE
>
>
GROUND
NEUTRAL ON 265V
SYSTEMS
L2
L1
NOTE 6
AL2DRY
OFFON
1
2
3
4
5
6
7
8
S1
2
PB
1
L2 (ribbed)
GROUND
L1 (plain)
BLK
ORG
230V
RCS
S
COM2 COM1
SEE
JW4
TEST
PINS
PM: DISABLE/ENABLE
UNIT STAGE:2/1
T’STAT: HEATCOOL/HEAT PUMP
RV ON B/RV ON O
DEHUMID/NORMAL
NOT USED
BOILERLESS: ENABLE/DISABLE
BOILERLESS: 40°F/50°F
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-Temperature
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
RED
C
GRY
DELUXE D
MICROPROCESSOR
CONTROL LOGIC
STATUS
TEST
FAULT
RV RELAY
JW3
SEE
FP1 LOW
NOTE 4
JW2
LOW
FP2
JW1
N.O.
LP
OFFON
1
ACC1
2
FUNCTIONS
3
4
ACC2
5
FUNCTIONS
6
7
H: HI FAN/DEHUMID
NOT USED
8
S2
DIP SWITCH PACKAGE
6
CR
2
2
1
RELAY
FAN
SPEED
RELAY
HP
LOC
FP1
FP2
RV
10
12
CO
P7
24V
DC
EH1
EH2
P6
COMPR
RELAY
8
4
NC
1
2
3
4
5
6
7
8
9
CCG
CC
BLU
RED
BM
RED
COMPRESSOR
S
R
C
BLK
B (HIGH)
A (LOW)
BLK
TRANSFORMER PRIMARY
LEAD COLORS
VOLTAGE
115
208
230
265
RED
RED
BLU
BRN
GRY
GRY
VIO
VIO
BRN
ORG
NOT USED
YEL
BRN
YEL
HP
LOC
FP1
NOTE 4
FP2
RVS
UNIT SIZE POLE APOLE B
1
CR
0
LEAD COLOR
WHT
RED
ORG
BRN
SEE
CO
BLOWER MOTOR WIRING
0753
0954
1243
1543
C
F
H
GRY
G
R
CAP
RED
BLK
BRN
YEL
FAN ENABLE
COM
NO
COM
NO
Y
1943
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSEDO = OPEN
TERMINALS 1 2345678
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOPX OOOOOOOO
FAN O NLY XOOOO XOOO
LOW COOL OXXOOOXOO
HIGH COOL OXXOOOOXO
LOW HEAT XOOXXOXOO
HIGH HEAT XOOXXOOXX
*Optional wiring.
NOTES:
1. Compressor and blower motor thermally protected
internally.
2. All wiring to the unit must comply with local codes.
3. Transformer is wired to 115-V (WHT) lead for 115/1/60
units, 265-V (BRN) lead for 265/1/60 units or 208-V
(RED) lead for 208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1 and insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
4. FP1 thermistor provides freeze protection for WATER.
When using ANTI-FREEZE solutions, cut JW3 jumper.
5. Typical unit-mounted thermostat wiring shown.
6. 24-V alarm signal shown. For dry alarm contact, cut AL2
DRY (JW4) jumper and dry contact will be available
between AL1 and AL2.
7. Transformer secondary ground via Deluxe D board
standoffs and screws to control box. (Ground available
from top two standoffs as shown.)
26
Page 27
AUTOMATIC CHANGEOVER WITH COMPLETE C CONTROLLER
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSEDO = OPEN
TERMINALS1 2345678
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOPXOOOOOOOO
FAN ON LYX OOOOXOOO
LOW FANXOOXXOXOO
HIGH FANXOOXXOOXX
BR2
UMT
GROUND
PB
CAP
COMPLETE
C
CONTROL
SEE NOTE 2
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
BR2
BR1
RED
TRANSFORMER
OPTIONAL
CORD
CONNECTION
UMT
4
ORG
5
YEL
6
RED
3A
3
PBS
5
RED
6
RED
YEL
7
YEL
YEL
BRN
CR
BR1
PBS
BRN
BRN
YEL
DM
3
5A
RED
6A
WV
1
7A
ORG
CB*
24V
RED
2
SEE
NOTE 3
TRANS
BRN
RED
RED
BRN
GROUND
L2
L1
BLU
YEL
ORG
BRN
YEL
SEE
NOTE 7
C
R
W
O
G
R
C
AL1
AL2
P1
L2 (ribbed)
L1 (plain)
ORG
230V
Y
Y
A
ALARM
RELAY
NEUTRAL ON 265V
SYSTEMS
2
PB
1
GROUND
BLK
BR BRG CCG
TEST PINS
SEE
NOTE 4
JW3
FP1
JW2
FP2
DIP SWITCH
JW1
OFF ON
SEE
NOTE 6
RED
10
CC
1
PM: DISABLED/
ENABLED
2
STAGE 2: 2/1
3
NOT USED
4
NOT USED
5
FP1/FP2
FAULTS: 3/1
STATUS
G
LED
COMPLETE C
MICRO-
PROCESSOR
CONTROL
LOGIC
H
C
F
YELBRN
COMPR.
RELAY
CO
CAP
RED
BLK
6
2
BRN
YEL
BLK
BLK
BLK
SEE
NOTE 7
HP
LOC
FP1
FP2
RV
10
CO12
P2
24V
DC
EH1
EH2
P3
COMPRESSOR
BLU
S
R
8
RED
CR
4
2
BM
1
5A
5
6A
6
7A
7
PBS
TRANSFORMER PRIMARY
VOLTAGE
RED
1
RED
2
3
BLU
BRN
4
5
GRY
6
GRY
7
VIO
8
VIO
BRN
9
ORG
NOT USED
YEL
BLK
B (HIGH)
A (LOW)
RED
RED
BLK
LEAD COLORS
115
208
230
265
C
LEAD COLOR
WHT
RED
ORG
BRN
HP
LOC
FP1
SEE
NOTE 4
FP2
RVS
CO
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
0753
0954
1243
1543
1943
LEGEND
AL— Alarm Relay Contacts
BM— Blower Motor
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
HP— High-Pressure SwitchJW1— Jumper Wire for Alarm
LOC— Loss of Charge Pressure Switch
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
UMT— Unit Mounted Thermostat
WV— Wate r Valve
----------Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-Temperature
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
>
>
Mate-N-Lock
*Optional wiring.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with local
codes.
3. Transformer is wired to 115-V (WHT) lead for
115/1/60 units, 265-V (BRN) lead for 265/1/60
units or 208-V (RED) lead for 208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1
and insulate RED lead.
Transformer is energy limiting or may have circuit breaker.
4. FP1 thermistor provides freeze protection for
WATER. When using ANTI-FREEZE solutions,
cut JW3 jumper.
5. Typical unit-mounted thermostat wiring shown.
6. 24-V alarm signal shown. For dry alarm contact, cut JW1 jumper and dry contact will be
available between AL1 and AL2.
7. Transformer secondary ground via Complete
C board standoffs and screws to control box.
(Ground available from top two standoffs as
shown.)
27
Page 28
Typical wiring schematics (cont)
AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER
GROUND
NEUTRAL ON 265V
SYSTEMS
2
PB
1
L2 (ribbed)
GROUND
L1 (plain)
BLK
ORG
230V
RCS
S
C
COM2 COM1
SEE
JW4
TEST
PINS
JW3
FP1 LOW
JW2
FP2
JW1
LP
PM: DISABLE/ENABLE
1
UNIT STAGE:2/1
2
T’STAT: HEATCOOL/HEAT PUMP
3
RVONB/RVONO
4
DEHUMID/NORMAL
5
NOT USED
6
BOILERLESS: ENABLE/DISABLE
7
BOILERLESS: 40°F/50°F
8
DIP SWITCH PACKAGE
X = CLOSEDO = OPEN
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOPXOOOOOOOO
RED
RED GRY
565A
PBSRED
RED
77A
DELUXE D
CONTROL
BR 2
(HI)
5
33A
GRY
6A
GRY
CAP
UMT
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
SEE
NOTE 7
YEL
4
6
YEL YEL YEL
1
UMT
ORG
OS
NLL
PB
ORG
YEL
3
RED
DM
TIME CLOCK
CLOSED-UNOCCUPIED
WHTRED
GROUND
LOG
ORG
WV
2
BRN
BRN
GRY
RED
WHT
GRY
YEL
BRN
SEE NOTE 2
OPTIONAL
CORD
CONNECTION
Y1
Y2
W1
O/W2
G
R
C
AL1
P2
AL2
R
NSB
C
ESD
OVR
H
A
P3
R
NO1
NC1
COM
NO2
NC2
COM
R
TRANSFORMER
CR
BR 1
(LO)
YEL
P1
CB*
24V
1
2
3
4
5
6
7
8
ALARM
ACC1
RELAY
ACC2
RELAY
OS
L2
L1
TRANS
BLU
C
R
NOTE 6
RELAY
AL2DRY
OFFON
S1
DIP SWITCH PACKAGE
PUSH BUTTON SWITCH ATTRIBUTES
TERMINALS 1 2345678
FAN O NLY X OOOOX OOO
LOW FAN XOOXXOXOO
HIGH FAN XOOXXOOXX
RED
GRY
SEE
NOTE 3
GRY
DELUXE D
MICROPROCESSOR
CONTROL LOGIC
STATUS
TEST
FAULT
RV RELAY
SEE
NOTE 4
LOW
N.O.
OFFON
1
ACC1
2
FUNCTIONS
3
4
ACC2
5
FUNCTIONS
6
H: HI FAN/DEHUMID
7
NOT USED
8
S2
C
H
F
G
R
CAP
RED
BLK
BRN
YEL
FAN ENABLE
COM
NO
COM
NO
Y
6
CR
2
RELAY
FAN
SPEED
RELAY
HP
LOC
FP1
FP2
RV
10
CO
12
P7
24V
DC
EH1
EH2
P6
COMPR
RELAY
BLU
8
4
2
BM
1
NC
1
2
3
4
5
6
7
8
9
CCG
CC
COMPRESSOR
RED
BLK
B (HIGH)
A (LOW)
RED
RED
RED
BLU
BRN
GRY
GRY
VIO
VIO
BRN
ORG
NOT USED
YEL
BRN
CR
YEL
S
R
C
BLK
TRANSFORMER PRIMARY
LEAD COLORS
VOLTAGE
LEAD COLOR
115
208
230
265
1
0
HP
LOC
FP1
SEE
NOTE 4
FP2
RVS
CO
WHT
RED
ORG
BRN
BLOWER MOTOR WIRING
UNIT SIZEPOLE APOLE B
0753
0954
1243
1543
1943
AL— Alarm Relay Contacts
BM— Blower Motor
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
HP— High-Pressure SwitchJW1— Jumper Wire for Alarm
LOC— Loss of Charge Pressure Switch
NLL— Night Low Limit Switch
OS— Override Switch
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
UMT— Unit Mounted Thermostat
WV— Wa ter Val ve
----------Field Line Voltage Wiring
Field Low-Voltage Wiring
28
PBS
LEGEND
>
>
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-Temperature
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
*Optional wiring.
NOTES:
1. Compressor and blow er motor thermally protect ed internally.
2. All wiring to the unit must comply with local codes.
3. Transformer is wired to 115-V (WHT) lead for 115/1/60 units,
265-V (BRN) lead for 265/1/60 units or 208-V (RED) lead for
208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1 and insulate
RED lead.
Transformer is energy limiting or may have circuit breaker.
4. FP1 thermistor provides freeze protection for WATER. When
using ANTI-FREEZE solutions, cut JW3 jumper.
5. Typical unit-mounted thermostat wiring shown.
6. 24-V alarm signal shown. For dr y alarm contact, cut AL2
DRY (JW4) jumper and dry contact will be available between
AL1 and AL2.
7. Transformer secondary ground via Deluxe D board standoffs
and screws to control box. (Ground available from top two
standoffs as shown.)
Page 29
REMOTE-MOUNTED THERMOSTAT WITH COMPLETE C CONTROLLER
GROUND
2
1
2
FSS
BLU
8
RED
4
BM
COMPRESSOR
R
BLK
B (HIGH)
A (LOW)
RED
1
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
OPTIONAL
CORD
CONNECTION
CB*
24V
L2
L1
SEE
NOTE 3
TRANS
L2 (ribbed)
L1 (plain)
BLK
ORG
230V
NEUTRAL ON 265V
SYSTEMS
2
PB
1
GROUND
RED
BLK
COM
H
CAP
6
RED
C
BR
NO
BLK
BRN
YEL
BLK
CR
2
F
S
C
BLK
BLK
RED
(220V)
ORG (240V)
SEE NOTE 5
CLASS 1 OR 2
WIRING ACCEPTABLE
OUTSIDE
CONTROL BOX
WV
TRANSFORMER
CR
BR
CAP
COMPLETE
C
CONTROL
TYPICAL HEATPUMP T-STAT
Y
O
G
R
C
L
BRNYEL
GROUND
PB
LEGEND
AL— Alarm Relay Contacts
BM— Blower Motor
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
FSS— Fan Speed Switch
HP— High-Pressure SwitchJW1— Jumper Wire for Alarm
LOC— Loss of Charge Pressure Switch
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
WV— Water Valve
---------- Field Line Voltage Wiring
Field Low-Voltage Wiring
SEE
NOTE 7
TRANS
CB
24V
BLU
BRN
CLASS 1 WIRING
REQUIRED INSIDE
CONTROL BOX
COMPRESSOR
COOLING
FAN
24 VAC
COMMON
ALARM
YEL
>
>
ORGYEL
DM
10
BR
BR BRG CCG
C
R
AL1
AL2
P1
TEST PINS
SEE
JW1
SEE
NOTE 6
NOTE 4
JW3
FP1
JW2
FP2
DIP SWITCH
OFF ON
Y
Y
W
O
G
R
C
ALARM
A
RELAY
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
BRNYEL
10
CR
BRNBRNGRYYEL
1
PM: DISABLED/
ENABLED
2
STAGE 2: 2/1
3
NOT USED
4
NOT USED
5
FP1/FP2
FAULTS: 3/1
STAT US
G
LED
COMPLETE C
MICRO-
PROCESSOR
CONTROL
LOGIC
TRANSFORMER PRIMARY
VOLTAGE
115
208
230
265
RED
RED
BLU
BRN
GRY
GRY
VIO
VIO
BRN
ORG
NOT USED
YEL
LEAD COLORS
LEAD COLOR
WHT
RED
ORG
BRN
HP
LOC
FP1
SEE
NOTE 4
FP2
RVS
CO
CC
COMPR.
RELAY
SEE
NOTE 7
YELBRN
1
HP
2
3
LOC
4
5
FP1
6
7
FP2
8
9
RV
10
CO12
P2
24V
DC
EH1
EH2
P3
CO
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
0753
0954
1243
1543
1943
*Optional wiring.
NOTES:
1. Compressor and blower motor thermally protected
internally.
2. All wiring to the unit must comply with local codes.
3. Transformer is wired to 115-V (WHT) lead for 115/
1/60 units, 265-V (BRN) lead for 265/1/60 units or
208-V (RED) lead for 208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1
and insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
4. FP1 thermistor provides freeze protection for
WATER. When using ANTI-FREEZE solutions, cut
JW3 jumper.
5. Typical heat pump thermostat wiring shown. Refer
to thermostat Installation Instructions for wiring to
the unit.
6. 24-V alarm signal shown. For dry alarm contact,
cut JW1 jumper and dry contact will be available
between AL1 and AL2.
7. Transformer secondary ground via Complete C
board standoffs and screws to control box.
(Ground available from top two standoffs as
shown.)
29
Page 30
Typical wiring schematics (cont)
REMOTE-MOUNTED THERMOSTAT WITH DELUXE D CONTROLLER
GROUND
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
OPTIONAL
CORD
CONNECTION
CAP
DELUXE
D
CONTROL
BR 2
(HI)
CLASS 1 OR 2 WIRING
ACCEPTABLE
OUTSIDE
CONTROL BOX
Y
O
G
R
C
X1
TYPICAL HEAT
PUMP T-STAT
SEE NOTE 5
BRN
BRN
ORG
YELYEL YEL
DM
WITH DIGITAL T-STAT
OV
OV
GROUND
LUG
PB
BRN
CLASS 1 WIRING
REQUIRED INSIDE
CLOSED=UNOCCUPIED
NLL
OVERRIDE
SEE
NOTE 7
COMPRESSOR
COOLING
FAN
24 VAC
COMMON
ALARM
RED
TIME CLOCK
BRN
WHT
YEL
WV
RED
OVERRIDE
OVERRIDE
TRANSFORMER
CR
BR 1
(LO)
LEGEND
AL— Alarm Relay Contacts
BR— Blower Relay
CAP— Capacitor
CB— Circuit Breaker
CO— Sensor, Condensate Overflow
CR— Compressor Relay
DM— Damper Motor
FP1— Sensor, Water Coil Freeze Protection
FP2— Sensor, Air Coil Freeze Protection
FSS— Fan Speed Switch
HP— High-Pressure SwitchJW1— Jumper Wire for Alarm
LOC— Loss of Charge Pressure Switch
NLL— Night Low Limit
PB— Power Terminal Block
PBS— Push Button Switch
PM— Performance Monitor
RVS— Reversing Valve Solenoid
TRANS — Transformer
WV— Water Val ve
---------- Field Line Voltage Wiring
Field Low-Voltage Wiring
Y1
Y1
W1
O/W2
G
R
C
AL1
P2
AL2
NSB
ESD
OVR
P3
NO1
NC1
COM
NO2
NC2
COM
L2
L1
CB*
TRANS
24V
YEL
BLU
C
R
P1
1
2
3
4
5
6
7
8
R
C
H
A
R
ACC1
RELAY
ACC2
RELAY
R
ALARM
RELAY
NOTE 6
AL2 DRY
OFF ON
S1
DIP SWITCH
PACKAGE
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
>
>
Mate-N-Lock
NEUTRAL ON 265V
SYSTEMS
2
PB
1
L2 (ribbed)
GROUND
L1 (plain)
BLK
ORG
230V
SC
RCS
COM2 COM1
SEE
JW4
TEST
PINS
1
PM: DISABLE/
ENABLE
2
UNIT STAGE: 2/1
3
T-STAT: HEAT COOL/
HEAT PUMP
4
RV ON B/RV ON O
5
DEHUMID/NORMAL
6
NOT USED
7
BOILERLESS:
ENABLE/DISABLE
8
BOILERLESS:
40°F/50°F
SEE
NOTE 3
MICROPROCESSOR
JW3
FP1 LOW
JW2
FP2 LOW
JW1
LP N.O.
RED
GRY
GRY
DELUXE D
CONTROL LOGIC
STATUS
TEST
FAULT
RV
RELAY
SEE
NOTE 4
OFF ON
1
ACC1
2
FUNCTIONS
3
4
ACC2
5
FUNCTIONS
6
7
H: HI FAN/DEHUMID
8
NOT USED
S2
DIP SWITCH
PACKAGE
*Optional wiring.
NOTES:
6
2
10
CCG
CR
1
2
3
4
5
6
7
8
9
CC
8
4
2
BM
1
3
FSS
RED
RED
BLU
BRN
GRY
GRY
VIO
VIO
BRN
ORG
NOT USED
YEL
BRN
YEL
BLU
RED
COMPRESSOR
S
R
C
BLK
B (HIGH)
A (LOW)
RED
BLK
TRANSFORMER PRIMARY
1
VOLTAGE
115
2
208
230
265
HP
LOC
FP1
FP2
RVS
CO
1
CR
BLOWER MOTOR WIRING
0
UNIT SIZE POLE A POLE B
LEAD COLORS
LEAD COLOR
WHT
RED
ORG
BRN
SEE
NOTE
4
H
C
F
G
Y
R
CAP
RED
BLK
BRN
YEL
FAN ENABLE
RELAY
COM
NO
FAN
SPEED
COM
RELAY
NONC
HP
LOC
FP1
FP2
RV
CO12
P7
24V
DC
EH1
EH2
P6
COMPR.
RELAY
0753
0954
1243
1543
1943
1. Compressor and blower motor thermally protected
internally.
2. All wiring to the unit must comply with local codes.
3. Transformer is wired to 115-V (WHT) lead for 115/1/60
units, 265-V (BRN) lead for 265/1/60 units or 208-V
(RED) lead for 208/1/60 units.
For203/1/60switchREDandORGleadsatL1and
insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
4. FP1 thermistor provides freeze protection for WATER.
When using ANTI-FREEZE solutions, cut JW3 jumper.
5. Typical heat pump thermostat wiring shown. Refer to
thermostat Installation Instructions for wiring to the
unit.
6. 24-V alarm signal shown. For dry alarm contact, cut
AL2 DRY (JW4) jumper and dry contact will be available between AL1 and AL2.
7. Transformer secondary ground via Deluxe D board
standoffs and screws to control box. (Ground available
from top two standoffs as shown.)
30
Page 31
PREMIERLINK™ CONTROLLER APPLICATIONS WITH COMPLETE C CONTROL
PREMIER
LINK
PWR
HS1/EXH/RVS
CR
CR
COMPLETE
C
CONTROL
Y
W
O
G
LEGEND
CR — Control Relay
LWT — Leaving Water Temperature Sensor
SAT — Supply Air Temperature Sensor
SPT — Space Temperature Sensor
NOTE: Reversing valve is on in Cooling mode.
J6
S
P
T
J5
L
S
A
W
T
T
PREMIERLINK CONTROLLER APPLICATIONS WITH DELUXE D CONTROL
J8
PWR
J1
CMPSAFE
PREMIER
LINK
CMP1
FAN
PWR
HS2
R
C
AL1
AL2
A
J4
DELUXE
D
CONTROL
Y1
Y2
LEGEND
LWT — Leaving Water Temperature Sensor
SAT — Supply Air Temperature Sensor
SPT — Space Temperature Sensor
NOTE: Reversing valve is on in Cooling mode.
J6
S
P
T
J5
L
S
A
W
T
T
J8
PWR
J1
CMPSAFE
HS1
CMP2
CMP1
FAN
W1
O/W2
G
R
C
AL1
J4
31
Page 32
Typical piping
1.84
(47)
Control Box
Compressor
Access
Panel
3.28
(83)
4.46
(113)
0.75
(19)
Power Supply
Water Out
Water In
*16.66
(423)
Condensate
5/8” (15.9 mm)
ID Vinyl Hose
50KQL PIPING DETAIL
5.36
(136)
3.01
(76)
30°
*1.94
(49)
*7.06
(179)
3.88
(99)
11.54
(293)
RIGHT HAND CONFIGURATION
3.43
(87)
0.87
(22)
7.5
(191)
3.56
(90)
0.99
(25)
Optional
Autoflow
Valve
Optional
Motorized
Water Valve
Water Connections
5/8” (15.9 mm)
OD Copper,
1/2” FPT or
1/2” MPT
Optional
Disconnect Box
(mounted to cabinet
not chassis)
5.36
Optional
Autoflow
Water Valve
Water Connections
5/8” (15.9 mm)
OD Copper,
1/2” FPT or
1/2” MPT
Optional
Disconnect Box
(mounted to cabinet
not chassis)
Valve
Optional
Motorized
0.87
(22)
7.5
(191)
3.56
(90)
(136)
3.01
(76)
3.42
(87)
3.22
(82)
Power Supply
30°
(293)
3.88
(99)
11.54
*1.94
(49)
*7.06
(179)
Water Out
Water In
*16.66
(423)
Condensate
5/8” (15.9 mm)
ID Vinyl Hose
LEFT HAND CONFIGURATION
*For installed dimension, add to dimension shown 2.9 in. with 3 in. subbase and 4.9 in. for 5 in. subbase.
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. Water connection in same location regardless of connection type.
3.50
(89)
4.49
(114)
1.93
(49)
Blower Deck
Blower Access Panel
0.75
(19)
32
Page 33
Guide specifications
Console Water Source Heat Pumps
HVAC Guide Specifications
Size Range: 7,800 to 16,000 Btuh
Cooling Capacity
10,400 to 19,300 Btuh
Heating Capacity
Carrier Model Number: 50KQL
Part 1 — General
1.01 SYSTEM DESCRIPTION
A. Install Water Source Heat Pumps, as indicated on
the plans with capacities and characteristics as listed
in the schedule and the specifications that follow.
Units shall be Carrier model 50KQL.
B. Units shall be individually packaged with wooden
skid covered with protective corner posts and plastic
stretch wrapping for maximum protection.
1.02 QUALITY ASSURANCE
A. All equipment listed in this section must be perfor-
mance rated and certified in accordance with
ARI/ISO Standard 13256-1, and safety listed in
accordance with NRTL or CSA. All units shall have
ARI/ISO and NRTL or CSA labels.
B. All units shall be factory tested under normal operat-
ing conditions at nominal water flow rates. Units
which are tested without water flow are not acceptable. Standard operating range is 60 to 95 F entering water temperature.
Part 2 — Product
2.01 EQUIPMENT
A. Heat Pump Assembly:
Factory-tested and assembled single-piece packaged
heating and cooling heat pump units shall be factory
wired, charged with Non-CFC R-22, contain refrigerant-to-water heat exchanger, air-to-refrigerant heat
exchanger, 4-way reversing valve, fan motor assembly, compressor, TXV metering device, and all internal controls and safety devices.
B. Unit Cabinet:
1. The cabinet shall be constructed of heavy gage
steel with welded corner bracing. A removable
front cabinet allows easy service access to the
chassis. The cabinet shall have a 30-degree
sloped top with an aluminum rigid bar type discharge grille.
2. An access door shall be provided to cover the
swing down control section. For all capacities
of the Console Heat Pump, the cabinet shall
be one size (48 in. L x 12 in. D x 24 in. H).
3. Options include a locking control panel for
added security; a bottom or front return with
left or right hand configurations for ease of
installation. Available with 3 or 5 in. subbase,
with or without motorized damper.
4. The cabinet shall be powder painted.
5. Optional mute package shall consist of additional sound attenuating materials strategically
applied to the compressor compartment, and
substitution of
tion for all surfaces that normally have
insulation.
C. Fan and Motor Assembly:
The fan motors shall be multi-speed permanently
lubricated, PSC (permanent split capacitor) type
with thermal overload protection. To facilitate field
service all units shall have a slide out fan deck and
quick electrical disconnect.
D. Refrigerant Components:
1. Units shall have a sealed refrigerant circuit including a hermetic compressor, a refrigerant metering device, a finned tube refrigerant-to-air heat
exchanger, a reversing valve, a coaxial (tube-intube) refrigerant-to-water heat exchanger, and
safety controls including a high-pressure sensor, a
loss-of-charge sensor to protect against loss of
refrigerant, and low water temperature (freezestat) sensor.
2. Rotary compressors shall have thermal overload protection and shall be located in an
insulated compartment to minimize sound
transmission. Units shall have the compressor
mounted on isolators to reduce noise and vibration transmission.
3. Refrigerant-to-air heat exchangers shall utilize
enhanced aluminum fins and rifled copper tube
construction rated to withstand 425 psig refrigerant working pressure.
4. Refrigerant-to-water heat exchangers shall be of
copper inner water tube and steel refrigerant
outer tube design rated to withstand 450 psig
working refrigerant pressure.
5. Reversing valve shall be four-way solenoidactivated refrigerant valves which shall fail to
heating operation. If the unit fails to cooling a
low-temperature thermostat must be provided
to prevent over-cooling of the room.
6. Optional coaxial water-to-refrigerant heat
exchangers shall be cupronickel.
7. Optional Extended Range for units operating
with entering water temperatures below dew
point. For use in operating range with entering
water temperatures from 20 to 110 F.
E. Controls and Safeties:
Units which may be reset at the disconnect switch
only shall not be acceptable.
1. Electrical:
A control box shall be located within the unit
and shall contain controls for compressor,
reversing valve and fan motor operation.
1
/2 in. noise dampening insula-
1
/4 in.
33
Page 34
Guide specifications (cont)
2. Piping:
a. Copper tubes with a
shall be provided on the supply and return
water connections for the purpose of
forming a sweat connection to field-supplied
distribution piping.
b. Optional threaded connections: A
male or female pipe threaded fitting shall be
factory mounted on the supply and return
water connections.
3. Unit Controls:
Safety devices on all units shall include low-
pressure sensor or loss-of-charge switch, highpressure switch, low water temperature sensor,
and condensate overflow switch.
4. The standard Complete C electronic control
system shall interface with the unit mounted or
remote heat pump (Y,O) wall thermostat
(mechanical or electronic). The control system
shall have the following features:
a. 50 va transformer.
b. Anti-short cycle time delay on compressor
operation; time delay shall be 5 minutes
minimum.
c. Random start on power-up.
d. Low voltage protection.
e. High voltage protection.
f. Condensate overflow shutdown.
g. Unit shutdown on low refrigerant pressures.
h. Unit shutdown on high or low water temper-
ature (selectable for antifreeze solutions).
i. Option to reset unit at thermostat or discon-
nect. Fault type shall be retained in memory
if reset at thermostat.
j. Automatic intelligent reset. Unit shall auto-
matically restart 5 minutes after shutdown if
the fault has cleared. Should a fault occur
3 times sequentially, then lockout will occur.
k. Ability to defeat time delays for servicing.
l. Light-emitting diode (LED) to indicate high
pressure, low pressure, improper voltage,
water coil freeze protection, air coil freeze
protection, condensate overflow, and con-
trol status.
m. Unit Performance Monitor to indicate ineffi-
cient operating conditions prior to unit
lockout.
n. Remote fault type indication at thermostat.
o. Single harness connection for all safety
devices.
p. Selectable 24-v or pilot duty dry contact
alarm output.
q. 24-v output to cycle a motorized water valve
with compressor contactor.
5
/8-in. OD dimension
1
/2-in.
r. The control box components shall be
easily accessible with a swing out control
compartment.
s. Standard unit-mounted MCO (manual
changeover) thermostat operating controls
shall consist of temperature setting dial
knob, push button switches for Stop, Fan
only, Hi Cool, Lo Cool, Hi Heat, Lo Heat.
Unit-mounted thermostats shall have a
remote sensor for sensing the return-air
temperature.
5. The optional Deluxe D electronic control shall
have all the features of the Complete C control,
with the following additional features:
a. 75 va transformer.
b. A removable thermostat connector.
c. Random start on return from night setback.
d. Minimized reversing value operation for
extended life and quiet operation.
e. Night setback control from low temperature
thermostat, with 2-hour override initiated by
a momentary signal from the thermostat.
f. Dry contact night setback output for digital
night setback thermostats.
g. Ability to work with heat/cool (Y, W)
thermostats.
h. Ability to work with heat pump thermostats
using O or B reversing valve control.
i. Single grounded wire to initiate night set-
back or emergency shutdown.
j. Boilerless system control can switch auto-
matically to electric heat at low loop water
temperature.
k. Control board shall allow up to 3 units to be
operated from one thermostat without any
auxiliary controls.
l. A relay to operate an external damper. The
control to be such that the damper will not
open until 30 minutes after the unit comes
back from Unoccupied mode.
m. Fan speed selection at thermostat.
n. A relay to restart a central pump or control a
24-v motorized water valve.
o. Intelligent fan speed selection based upon
thermostat demand and/or dehumidistat
signal.
6. Carrier PremierLink™ Controller:
This control will function with CCN (Carrier
Comfort Network) and ComfortVIEW™
software. It shall also be compatible with
ComfortLink™ controllers. It shall be ASHRAE
62-99 compliant and Internet ready. It shall
accept a CO
and be Demand Control Ventilation (DCV)
ready. The communication rate must be 38.4K
or faster.
sensor in the conditioned space
2
34
Page 35
7. Optional Controls:
a. Unit-mounted ACO (automatic changeover)
thermostat operating controls shall consist of
temperature setting dial knob, push button
switches for Stop, Fan only, Hi fan, Lo fan.
Unit-mounted thermostats shall have a remote
sensor for sensing the return-air temperature.
b. Units designed for connection to remote wall
mounted thermostat shall be wired such that
the operating controls are at the thermostat.
The controller shall be provided with a low
voltage field wiring terminal block. The control scheme shall accommodate MCO or
ACO heat pump thermostats with Y, G, and
O outputs. An alternate controller shall be
available from the factory to accommodate
the Heat/Cool thermostats.
c. Motorized (2-way) water valves shall be
factory installed and wired. The valve shall
remain open when there is a cooling or
heating demand and the compressor is
running. The valve shall close when the
compressor stops after satisfying the
demand or due to lockout condition.
d. Fresh air dampers shall be motorized with a
spring return. The damper shall open when
Cooling or Heating mode selection is made
from the unit-mounted switches. With a
remote thermostat, the damper shall open
any time the fan is in operation.
e. Night low limit thermostats shall include a
unit-mounted thermostat sensing space temperature. Should the space temperature fall
below the limit, the night low limit thermostat shall start the fan and compressor operation in Heating mode.
f. Units with the unit-mounted thermostat shall
include a 2-hour override function. The
override switch shall be readily accessible. In
override mode the unit operation shall be
the same as in occupied mode. Override
mode shall be terminated automatically at
the end of a 2-hour period.
F. Electrical Requirements:
1. A control box shall be located within the unit
compressor compartment and shall contain a
50 va transformer, 24-volt activated, 3-pole
compressor contactor, terminal block for
thermostat wiring and solid-state controller for
complete unit operation. Electro-mechanical
operation WILL NOT be accepted.
2. Units shall be nameplated for use with timedelay fuses or HACR circuit breakers.
3. Unit controls shall be 24-volt and provide heating
or cooling as required by the remote thermostat.
G. Special Features:
1. Aquazone™ Thermostat Controls (for use with
remote thermostat units):
a. Programmable multi-stage thermostat with
7-day clock, holiday scheduling, large backlit
display and remote sensor capability.
b. Programmable 7-Day Light-Activated Ther-
mostat offers occupied comfort settings with
lights on, unoccupied energy savings with
lights off.
c. Programmable 7-Day Flush-Mount Thermo-
stat offers locking coverplate with tamper
proof screws, flush to wall mount, dual point
with adjustable deadband, O or B terminal,
and optional remote sensor.
2. Aquazone System Control Panel:
The panel shall coordinate, monitor, and con-
trol all WSHP units and ancillary equipment
including cooling towers, boilers, and system
pumps.
3. Fire-Rated Hose kits:
Hoses shall have a fixed MPT on one end and a
swivel with an adapter on the other end. Hose
kits shall be either stainless steel or galvanized.
4. Ball Valves (Brass Body):
Ball valves shall be for shutoff and balancing water
flow. Valves shall be available with memory,
memory stop, and pressure temperature ports.
5. Y Strainers (Bronze Body):
Strainers shall have “Y” type configuration with
a brass cap. Strainers shall have a maximum
operating pressure rating of 450 psi. Strainer
screen shall be made of stainless steel.
6. Solenoid Valves (Brass Body):
Valves shall provide slow operation for quiet
system application.
7. Hose Kit Assemblies:
Hose kits shall include 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 measure flow (gpm) with two P/T ports, flexible
stainless steel hose with a swivel and nipple.
8. Remote Sensors:
Sensors for Aquazone flush-mount thermostats
shall be available.
35
Page 36
Guide specifications (cont)
9. PremierLink™ accessories:
PremierLink accessories shall provide a fully
integrated DDC system. Accessories include
supply air temperature sensors, communicating room sensors, CO
sensors, and linkage
2
thermostats.
Book 1 4
Ta b 5 a 5 a
Carrier Corporation • Syracuse, New York 132213-04
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
NewPg 36Catalog No. 525-00060Printed in U.S.A.Form 50KQL-1PD
Book 1
Ta b 1 I P 4 a
Replaces: 50KQ-6PD
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