AQUAZONE™
50KQL07-19
Water Source Heat Pumps
Console Unit
Product
Data
1/2 to 11/2 Nominal Tons
TM
Single-Package Console Water
Source Heat Pump with self-
contained line voltage thermostats.
• Suitable for either geothermal or
boiler/tower applications with
operating temperature range from
20 F to 110 F.
• Thermostatic expansion valve
(TXV) provides efficient and reliable
refrigerant flow
• 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 geo-
thermal applications. Heating COPs
(Coefficient of Performance) are as
high as 4.9, among the highest in the
industry.
Copyright 2004 Carrier Corporation
Form 50KQL-1PD
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Features/Benefits (cont)
Anti-short cycle timer — Provides a
Water coil freeze protection
(selectable for water or anti-
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 com-
patible with ComfortLink™ Controls,
CCN and ComfortVIEW™ Software.
The Scrolling Marquee and Navigator
are optional tools used for program-
ming and monitoring the unit for opti-
mal performance. Adding the Carrier
CO2 sensor in the conditioned space
provides ASHRAE 62-99 compliance
and Demand Control Ventilation
(DCV). A DCV control strategy is espe-
cially 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 devel-
oped for a water source heat pump
system.
minimum off time to prevent the unit
from short cycling. The 5-minute timer freeze) — Field selectable switch for
energizes when the compressor is
deenergized, resulting in a 5-minute
delay before the unit can be restarted.
water and water/glycol solution sys-
tems initiates a fault when tempera-
tures exceed the selected limit for
30 continuous seconds.
Random start relay — Ensures a
random delay in energizing each differ- Air coil freeze protection (check
ent WSHP unit. This option minimizes
peak electrical demand during start-up
filter operation) — Field selectable
switch for assessing excessive filter
from different operating modes or after pressure drop initiates a fault when
building power outages.
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
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.
check the operation of the WSHP and
control system efficiently. Upon enter-
High and low voltage protection — ing Test mode, time delays speed up,
Safety protection for excessive or low
voltage conditions.
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.
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.
The PremierLink peer-to-peer,
Internet ready communicating control
is designed specifically for Constant
Volume and Variable Volume Tempera-
ture applications. This comprehensive
controls system allows water source
heat pumps to be linked together, cre-
ating a fully functional HVAC (heating,
ventilation, and air conditioning) auto-
mation system.
Carrier PremierLink™ control-
ler adds reliability, efficiency,
and simplification
The PremierLink direct digital control-
ler can be ordered as a factory-installed
option. Designed and manufactured
3
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Model number nomenclature
5
0
K
Q
L
0
7
S
A
E
C
1
0
1
A
A
Aquazone™ High-Efficiency R-22
Water Source Heat Pump
50KQL – Console Unit
Power Termination
A – Field-Connected Hard Wired
B – 20A Plug and Cord**
D – Disconnect switch, 15A fuse
F – Disconnect switch, non-fused
H – 20A Plug, Cord, Receptacle,
Disconnect Switch, 15A Fuse
K – 20A Plug, Cord, Disconnect
Switch, No Fuse
Size – Nominal Capacity (Tons)
07 – 1/2
09 – 3/4
12 –
1
15 – 1 1/4
19 – 1 1/2
Packaging
1 – Domestic
Water Circuit Options
Valve Option
2-Way Water Control Valve
Revision Code
0 – Current revision
Connection Type
A
B
C
D
–
–
–
–
Sweat
Sweat
Sweat
Sweat
Autoflow Regulator, 2.25 gpm/ton
Autoflow Regulator, 3.0 gpm/ton
2-Way Water Control Valve with
Autoflow Regulator, 2.25 gpm/ton
2-WayWater Control Valve with
Autoflow Regulator, 3.0 gpm/ton
None
2-Way Water Control Valve
Autoflow Regulator, 2.25 gpm/ton
Autoflow Regulator, 3.0 gpm/ton
2-Way Water Control Valve with
Autoflow Regulator, 2.25 gpm/ton
2-Way Water Control Valve with
Autoflow Regulator, 3.0 gpm/ton
None
2-Way Water Control Valve
Autoflow Regulator, 2.25 gpm/ton
Autoflow Regulator, 3.0 gpm/ton
2-WayWater Control Valve with
Autoflow Regulator, 2.25 gpm/ton
None
Power Supply
1 – 115V-1 Ph-60 Hz††
3 – 208/230V-1 Ph-60 Hz
4 – 265V-1 Ph-60 Hz**
E
–
Sweat
F
G
H
J
–
–
–
–
–
FPT
FPT
FPT
FPT
FPT
Heat Exchanger and Operating Range
C – Copper heat exchanger, standard range
(60 to 95 F)
E – Copper heat exchanger, extended range (20 to 110 F)
F – Cupronickel heat exchanger, extended range
(20 to 110 F)
K
L
–
FPT
N – Cupronickel heat exchanger, standard range
(60 to 95 F)
M
N
P
Q
R
–
–
–
–
–
MPT
MPT
MPT
MPT
MPT
Cabinet, Subbase and Mute Package Options
Std Mute
Cabinet
Subbase
S
T
–
–
Sweat
MPT
A
B
T
Bottom return
Bottom return
3 in. Subbase
2-Way Water Control Valve with
Autoflow Regulator, 3.0 gpm/ton
U
3 in. Subbase with
Motorized Damper
C
V
5 in. Subbase with
Motorized Damper
Bottom return
Bottom return
Water Supply Orientation
R – Right Hand
D
E
W
Y
NO BASE
*
Bottom return
3 in. Subbase
L – Left Hand
Locking control door
F
G
H
Z
1
2
Bottom return
Locking control door
3 in. Subbase with
Motorized Damper
Bottom return
Locking control door
5 in. Subbase with
Motorized Damper
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†
Bottom return
Locking control door
NO BASE
J
3
4
Front return
NO BASE
NO BASE
K
Front return
Locking control door
R – Remote Thermostat with Complete C
S – Remote Thermostat with Deluxe D
L
5
6
NO CABINET
NO CABINET
3 in. Subbase
M
3 in. Subbase with
Motorized Damper
*Right and left hand orientation is determined by looking at front of unit.
N
7
NO CABINET
5 in. Subbase with
Motorized Damper
†Available with Complete C only.
**20A plug and cord not available for 265V units.
††Sizes 07,09,12 only.
P
Q
R
S
8
9
NO CABINET
NO CABINET
Bottom return
NO BASE
5 in. Subbase
5 in. Subbase
5 in. Subbase
0
O
Bottom return
Locking control door
4
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ARI/ISO 13256-1 capacity ratings
COOLING
HEATING
Input Power
(kW)
WATER
FLOW
(gpm)
PRESSURE
DROP
AIRFLOW
(cfm)
UNIT 50KQL
Input Power
TC
SC
THR
EER
TC
COP
(ft wg)
(kW)
0.645
0.775
1.060
1.169
1.333
07
09
12
15
19
7.8
9.3
12.3
13.8 11.2
16.0 11.9
6.6
7.2
9.5
10.0
11.9
15.9
17.8
20.6
12.1
12.0
11.6
11.8
12.0
10.4
12.0
15.0
17.3
19.3
0.622
0.799
0.999
1.152
1.346
4.9
4.4
4.4
4.4
4.2
240
300
350
400
460
1.9
2.5
3.1
3.6
4.8
1.5
3.1
3.8
3.0
5.0
LEGEND
NOTES:
1. Ratings are in accordance with and certified to ARI/ISO Standard
13256-1.
ARI
COP
db
—
—
—
—
—
—
—
—
—
Air Conditioning and Refrigeration Institute
Coefficient of Performance
Dry Bulb Temperature
Energy Efficiency Ratio
International Organization for Standardization
Total Capacity (MBtuh)
2. Cooling Standard: 80.6 F db, 66 F wb indoor entering air tempera-
ture, 86 F entering water temperature.
3. Heating Standard: 68 F db indoor entering air temperature, and
68 F entering water temperature.
EER
ISO
TC
THR
SC
wb
Total Heat of Rejection (MBtuh)
Sensible Capacity (MBtuh)
Wet Bulb Temperature
Physical data
BASE UNIT 50KQL
NOMINAL COOLING CAPACITY (Btuh)
COMPRESSOR
07
7,800
09
9,300
12
12,300
Rotary
15
13,800
19
16,000
BLOWER
1
1
1
1
1
/
/
15
/
15
/
/
Motor Horsepower
Wheel Size D x W (in.) 2 each
20
51/4 x 61/4
8 x 291/2 x 3/8
7 x 291/2 x 1/8
51/4 x 61/4
8 x 291/2 x 3/8
7 x 291/2 x 1/8
51/4 x 61/4
8 x 291/2 x 3/8
7 x 291/2 x 1/8
51/4 x661/4
51/4 x661/4
8 x 291/2 x 3/8
7 x 291/2 x 1/8
8 x 291/2 x 3/8
7 x 291/2 x 1/8
FILTER SIZE (in.) Bottom Return
FILTER SIZE (in.) Front Return
UNIT WEIGHT (lb)
Shipping
Operating
181
173
185
177
195
187
201
193
206
198
REF. TO AIR HEAT EXCHANGER
Face Area (sq ft)
1.4
1.4
1.4
1.8
1.8
No. of Rows Deep
2
2
3
3
3
3
3
3
3
3
Copper Tube Size OD (in.)
Fin Spacing (FPI)
/
/
/
8
/
8
/
8
8
8
13
13
13
13
12
REFRIG. CHARGE (R-22)/CKT (oz)
No. of Circuits
16
1
16
1
21
1
27
1
24
1
UNIT CABINET WITH STANDARD SUBBASE
W x H x D (in.)
48 x 24 x 12
48 x 24 x 12
48 x 24 x 12
48 x 24 x 12
48 x 24 x 12
5
5
5
5
5
/
/
/
8
/
8
/
WATER IN/OUT SIZE OD SWEAT (in.)
CONDENSATE SIZE ID VINYL (in.)
8
8
8
5
5
5
5
5
/
/
/
8
/
8
/
8
8
8
5
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Options and accessories
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.
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.
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 tempera-
ture. 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 tem-
perature 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.
Thermostat options include a unit mounted Manual
Changeover (MCO) or Auto Changeover (ACO) thermo-
stat. The temperature set point knob and push button
switches for fan speed and cool/heat mode (MCO) selec-
tion 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 heat-
ing 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 3 or 5 in. subbase, with or without motor-
ized 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/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 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 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
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.
6
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50KQL CONTROL OPTIONS TABLE
OPTION
CONTROLLER
Complete C
THERMOSTAT
MCO
FUNCTIONS
TRANSFORMER
50 VA
A
B
C
D
P
R
—
Deluxe D
MCO
NIGHT LOW LIMIT 2-HR OVERRIDE
75 VA
Complete C
ACO
—
50 VA
Deluxe D
ACO
NIGHT LOW LIMIT 2-HR OVERRIDE
75 VA
Complete C with PremierLink™
Complete C
LINKAGE
REMOTE
DDC SYSTEM
—
50 VA
50 VA
NIGHT LOW LIMIT2-HR
OVERRIDE
S
Deluxe D
REMOTE
75 VA
LEGEND
ACO
DDC
MCO
—
—
—
Auto Changeover
Direct Digital Controls
Manual Changeover
• 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 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-
able (1/2, 3/4, 1, 11/4, 11/2 in.).
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, 11/2 in.).
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 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.
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
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 compres-
sor 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 adjust-
able deadband, configurable display, self-prompting pro-
gram, 4 settings per day.
Non-programmable thermostat — Offers 2 heat stages,
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 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.
Remote sensors are available for Aquazone flush mount
thermostats. Sensors are available for wall (wired and wire-
less) 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 set-
point adjustment), communicating room sensors, CO2 sen-
sors (for use in demand control ventilation), and linkage
thermostats (to control multiple units from one thermostat).
• 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.
7
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Options and accessories (cont)
CARRIER AQUAZONE™ THERMOSTATS
(FOR USE WITH REMOTE THERMOSTAT UNITS)
Carrier
®
Pm
COOL
HEAT
AUTO
7-DAY PROGRAMMABLE/LIGHT-ACTIVATED
PROGRAMMABLE
7-DAY PROGRAMMABLE FLUSH MOUNT
R
COOL
AUTO
HEAT
5-DAY PROGRAMMABLE/NON-PROGRAMMABLE
PREMIERLINK™ COMMUNICATING CONTROL
8
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Dimensions
50KQL BOTTOM RETURN CABINET DIMENSIONS — RIGHT HAND PIPING
3.5
(88.9)
Discharge
Air
16
(406)
5
(127)
30°
Control Access Door
FRONT VIEW
Filter located inside and at
top of air inlet area. Push
tabs back and down to release
filter for replacement.
SIDE
VIEW
*23.9
(607)
1.9
(48)
Air
Inlet
AIR INLET AREA
11.5
1.75
(44.5)
33.5
(292)
(851)
*2.9
(74)
48.0
(1219)
12.0
(305)
48.0
(1219)
R.H. Pipe &
Electric Area
10.0
(254)
BOTTOM VIEW
0.75
(19)
1.56
(40)
3.5
(89)
1 (25)
4.5
(114)
1 (25)
REAR VIEW
REAR
ACCESS
21
(533)
20
(508)
1.63
(41)
*2.9
(74)
0.59
(15)
DAMPER OPENING*
11.75
(298)
9.81
(249)
48
(1219)
*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.
9
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Dimensions (cont)
50KQL BOTTOM RETURN CABINET DIMENSIONS — LEFT HAND PIPING
3.5
(88.9)
12.6
(320)
Discharge
Air
1.5
(38)
30°
Control Access Door
Filter located inside and at top of air
inlet area. Push tabs back and down
to release filter for replacement.
SIDE
VIEW
FRONT VIEW
*23.9
(607)
1.9
(48)
Air
Inlet
AIR INLET AREA
33.5
11.5
1.75
(44.5)
(851)
(292)
*2.9
(74)
48.0
(1219)
12.0
(305)
48.0
(1219)
L.H. Pipe &
Electric Area
10.0
(254)
BOTTOM VIEW
0.75
(19)
1.56
(40)
1 (25)
1 (25)
3.5
(89)
4.5
(114)
REAR
ACCESS
21.0
(533)
REAR VIEW
20.0
(508)
1.63
(41)
0.59
(15)
*2.9
(74)
DAMPER OPENING*
11.75
(298)
9.9
(251)
48.0
(1219)
*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.
10
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50KQL FRONT RETURN CABINET DIMENSIONS — RIGHT HAND PIPING
3.5
(88.9)
Discharge
Air
16
(406)
5
(127)
30°
Control Access Door
FRONT VIEW
SIDE
VIEW
21.0
(533)
21.0
(533)
Air
Inlet
7.9
(201)
43.7
(1110)
12.0
(305)
48.0
(1219)
Filter located behind return
air grille and requires removal of
cabinet front for access.
48.0
(1219)
R.H. Pipe &
Electric Area
12.0
(305)
BOTTOM VIEW
4.5
(114)
1 (25)
1 (25)
REAR VIEW
21.0
(533)
20.0
(508)
REAR
ACCESS
48.0
(1219)
NOTES:
1. All dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Optional autoflow valve, motorized water valve and disconnect box are shown.
11
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Dimensions (cont)
50KQL FRONT RETURN CABINET DIMENSIONS — LEFT HAND PIPING
3.5
(88.9)
Discharge
Air
12.6
(320)
1.5
(38.1)
30°
Control Access Door
FRONT VIEW
SIDE
VIEW
21.0
(533)
21.0
(533)
Air
Inlet
7.9
(201)
43.7
(1110)
12.0
(305)
48.0
(1219)
Filter located behind return
air grille and requires removal of
cabinet front for access.
48.0
(1219)
L.H. Pipe &
Electric Area
BOTTOM VIEW
12.0
(305)
1 (25)
4.5
(114)
1 ( 25)
REAR
ACCESS
21.0
(533)
REAR VIEW
20.0
(508)
48.0
(1219)
NOTES:
1. All dimensions are shown in inches. Dimensions in parentheses are in millimeters.
2. Optional autoflow valve, motorized water valve and disconnect box are shown.
12
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50KQL CHASSIS DIMENSIONS — SIZE 07, 09, 12, 15, 19
5.36
3.28
(83)
40.98
(1040)
(136)
Power Supply
3.01
(76)
1.84
(47)
30°
Water Out
Water In
0.87
(22)
Control Box
Blower Deck
*16.66
(423)
20.50
(521)
Compressor
Access
Panel
7.5
(191)
*1.94
(49)
Blower Access Panel
*7.06
3.56
(90)
(179)
4.46
(113)
0.75
(19)
0.75
(19)
3.88
(99)
3.43 0.99
(87) (25)
Condensate
5/8” (15.9 mm)
ID Vinyl Hose
11.5
4
(293)
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)
RIGHT HAND CONFIGURATION
5.36
40.98
(1041)
3.50
(89)
(136)
Power Supply
3.01
(76)
1.93
(49)
Water Out
Water In
30°
0.87
(22)
Control Box
3.42
(87)
Blower Deck
*16.66
(423)
20.44
(52)
Compressor
Access
7.5
(191)
Panel
*1.94
(49)
Blower Access Panel
3.56
(90)
*7.06
(179)
4.49
(114)
0.75
(19)
3.22
(82)
0.75
(19)
Condensate
5/8” (15.9 mm)
ID Vinyl Hose
3.88
(99)
11.5
4
Optional
Autoflow
Valve
Optional
Motorized
Water Valve
*For installed dimension, add to dimension shown 2.9 in. with 3 in. subbase and 4.9 in. for 5 in.
subbase.
Water Connections
5/8” (15.9 mm)
OD Copper,
1/2” FPT or
1/2” MPT
NOTES:
1. Dime
n
s
io
n
s
s
h
o
w
n
a
r
e
i
n
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.
Optional Disconnect Box
(mounted to cabinet not chassis)
LEFT HAND CONFIGURATION
13
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Selection procedure (with 50KQL12 example)
I Determine the actual cooling and heating
loads at the desired dry bulb and wet bulb
conditions.
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.
Assume cooling load at desired dry bulb 80 F and
wet bulb 66 F conditions are as follows:
Given:
Using the following formulas to determine the cor-
rection 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
Total Cooling (TC). . . . . . . . . . . . . . .11,750 Btuh
Sensible Cooling (SC) . . . . . . . . . . . . .8,650 Btuh
Entering-Air Temperature db . . . . . . . . . . . . 80 F
Entering-Air Temperature wb . . . . . . . . . . . . .66 F
II Determine the following design parameters.
V Determine entering air and airflow correction
using the Corrections Factor tables found in
this book.
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 pres-
sure 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.
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.
For example:
Using the following formulas to determine the cor-
rection factors of entering air and airflow correction:
Entering Water Temp . . . . . . . . . . . . . . . . . 90 F
Water Flow (Based upon
10 F rise in temp) . . . . . . . . . . . . . . . . . . 3.1 gpm
Table
Ent Air Airflow Corrected
Airflow Cfm . . . . . . . . . . . . . . . . . . . . . . 308 cfm
Corrected
Total Cooling
= 12,200 x 0.983 x 0.979 = 11,741
III Select a unit based on total cooling and total
sensible cooling conditions. Unit selected
should be closest to but not larger than the
actual cooling load.
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
Enter tables at the design water flow and water
temperature. Read the total and sensible cooling
capacities.
NOTE: Interpolation is permissible, extrapolation is
not.
Compare the corrected capacities to the load
requirements established in Step I. If the capacities
are within 10% of the load requirements, the equip-
ment is acceptable. It is better to undersize than
oversize as undersizing improves humidity control,
reduces sound levels and extends the life of the
equipment.
For example:
Enter the 50KQL12 Performance Table at design
water flow and water temperature. Read Total
Cooling, Sensible Cooling and Heat of Rejection
capacities:
Total Cooling . . . . . . . . . . . . . . . . . .12,200 Btuh
Sensible Cooling . . . . . . . . . . . . . . . . 8,900 Btuh
Heat of Rejection . . . . . . . . . . . . . . .15,900 Btuh
VI Water temperature rise calculation and
assessment.
Calculate the water temperature rise and assess the
selection using the following calculation:
Correction of Heat Rejection
gpm x 500
Actual Temperature
Rise
=
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.
For example, using the Corrected Heat of Rejection
from the last step:
15,333
3.1 x 500
Actual Temperature
Rise
=
=
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
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VII ARI/ISO 13256-1 Conversion
c) Perform Fan Power Correction Adjustment
Performance standard ARI/ISO 13256-1 became
effective on January 1, 2000 and replaced the exist-
ing ARI Standards 320 Water-Loop Heat Pumps
(WLHP), 325 Ground-Water Heat Pumps (GWHP),
and 330 Ground-Loop Heat Pumps (GLHP).
Use the following formula to calculate Fan Power
Correction:
Fan Power
Correction = (Cfm x 0.472) x (External Static
Pressure x 249)/300 = Watts
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 per-
formance modeling in seasonal energy analysis cal-
culations, and allows for direct rating comparisons
across applications.
= (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
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)
= (3.1 x 0.0631) x
(3.7 x 2,990)/300
= 7.2 Watts
e) Perform capacity and EER calculations
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.
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 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
ISO EER = (ISO Cooling Capacity/3.412)/
(Power Input – Fan Power Correc-
tion + Pump Power Correction)
= Watts/Watts
NOTE: Do not divide ISO Heating Capacity by
3.412 to obtain Btuh/Watts.
NOTE: Do not divide ISO Cooling Capacity by
3.412 to obtain Btuh/Watts.
b) Identify the design conditions corrected for air and
water conditions.
= (11,741/3.412)/(1,067 – 0 + 7.2)
= 3.20 Watts/Watt
= 10.93 Btuh/Watt
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
15
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Performance data
50KQL07 — NOMINAL AIRFLOW 240 CFM
WATER PRESSURE DROP (ft wg)
COOLING — EAT 80 F DB/67 F WB
HEATING — EAT 70 F
EWT
(F)
GPM
Without Motorized
Valve
With Cv = 2.9
MOPD = 125 psi
Input
Input
Power
TC
SC
SHR
THR
TC
THA
Power
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.0
1.4
1.9
1.6
2.5
3.7
1.4
2.2
3.3
0.9
1.4
2.1
0.9
1.4
2.0
0.8
1.3
1.9
0.7
1.2
1.8
0.7
1.1
1.6
0.6
1.0
1.5
0.6
1.0
1.4
0.6
0.9
1.3
0.5
0.9
1.3
1.8
2.7
4.2
1.6
2.4
3.7
1.0
1.7
2.5
1.0
1.6
2.5
0.9
1.5
2.4
0.9
1.4
2.2
0.8
1.3
2.0
0.7
1.3
1.9
0.7
1.2
1.9
0.7
1.1
1.7
0.7
1.1
1.7
Operation not recommended
20
Operation not recommended
5.5
6.0
6.3
6.4
6.9
7.2
7.4
7.8
8.2
8.4
8.7
9.2
9.4
0.50
0.51
0.52
0.52
0.53
0.54
0.55
0.56
0.57
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.63
0.64
0.65
0.64
0.65
0.66
0.65
0.66
0.67
3.8
4.3
4.5
4.7
5.1
5.4
5.6
5.9
6.3
6.5
6.7
7.2
7.4
7.6
8.1
8.3
8.4
9.0
9.3
8.9
9.4
9.7
9.3
9.9
10.2
9.7
9.8
9.9
9.4
9.6
9.7
9.0
9.3
9.5
8.6
8.9
9.1
8.1
8.5
8.6
7.6
8.0
8.1
7.4
7.7
7.9
7.2
7.5
7.6
6.7
7.0
7.2
6.4
6.6
6.7
6.9
6.9
6.9
6.8
6.9
6.9
6.7
6.8
6.8
6.5
6.6
6.7
6.3
6.5
6.5
6.1
6.2
6.3
5.9
6.1
6.2
5.8
6.0
6.1
5.5
5.7
5.8
5.2
5.4
5.5
0.71
0.70
0.70
0.72
0.71
0.71
0.74
0.73
0.72
0.76
0.74
0.74
0.78
0.76
0.76
0.79
0.78
0.78
0.80
0.79
0.78
0.81
0.80
0.79
0.81
0.81
0.81
0.81
0.81
0.81
0.36
0.33
0.31
0.41
0.37
0.36
0.46
0.42
0.40
0.52
0.48
0.46
0.58
0.53
0.51
0.65
0.60
0.57
0.68
0.63
0.61
0.72
0.67
0.64
0.81
0.75
0.72
0.91
0.84
0.81
10.9
10.9
10.9
10.8
10.9
10.9
10.6
10.8
10.8
10.4
10.5
10.6
10.1
10.3
10.4
9.8
10.0
10.1
9.7
9.9
10.0
9.6
9.8
9.8
9.5
9.6
30
40
50
60
9.6
70*
80
10.2
10.5
10.6
11.1
11.5
11.0
11.6
12.0
11.5
12.1
12.5
85*
90
100
110
9.6
9.5
9.5
9.5
Operation Not Recommended
LEGEND
— Dry Bulb
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pres-
sure differential at unit cannot exceed MOPD or water valve can-
not close)
DB
EAT
— Entering Air Temperature (F)
EWT — Entering Water Temperature (F)
GPM — Gallons per Minute
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 volt-
age 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.
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.
16
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50KQL09 — NOMINAL AIRFLOW 300 CFM
WATER PRESSURE DROP (ft wg)
COOLING — EAT 80 F DB/67 F WB
HEATING — EAT 70 F
EWT
(F)
GPM
Without Motorized
Valve
With Cv = 2.9
MOPD = 125 psi
Input
Input
Power
TC
SC
SHR
THR
TC
THA
Power
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
1.3
1.9
2.5
2.2
3.9
6.2
1.8
3.2
5.0
1.3
2.6
4.0
1.3
2.5
3.9
1.2
2.4
3.7
1.2
2.2
3.5
1.1
2.1
3.2
1.1
2.0
3.1
1.0
2.0
3.0
1.0
1.9
3.0
1.0
2.0
3.1
2.4
4.4
7.0
2.0
3.6
5.8
1.5
3.0
4.7
1.5
2.9
4.6
1.4
2.8
4.4
1.3
2.7
4.2
1.3
2.5
4.0
1.2
2.4
3.9
1.2
2.4
3.8
1.2
2.3
3.7
1.2
2.4
3.8
Operation not recommended
20
30
Operation not recommended
7.2
7.5
7.6
7.7
8.1
8.4
8.6
9.1
9.4
0.63
0.66
0.67
0.67
0.69
0.70
0.71
0.72
0.73
0.74
0.75
0.77
0.77
0.79
0.80
0.81
0.82
0.83
0.84
0.83
0.85
0.86
0.85
0.87
0.88
5.1
5.2
5.4
5.4
5.8
6.0
6.2
6.6
6.9
7.1
7.6
8.0
8.2
8.6
9.1
9.4
9.7
10.3
10.6
10.2
10.8
11.2
10.8
11.4
11.7
11.3
11.7
11.9
10.9
11.2
11.3
10.6
10.8
10.9
10.2
10.4
10.6
9.8
10.1
10.2
9.3
9.6
9.8
9.0
9.4
9.6
8.7
7.6
7.7
7.8
7.4
7.5
7.6
7.2
7.3
7.4
7.1
7.2
7.2
6.9
7.0
7.1
6.8
6.9
6.9
6.7
6.8
6.9
6.5
6.7
6.8
6.2
6.4
6.5
5.7
6.0
6.2
0.67
0.66
0.66
0.68
0.67
0.67
0.68
0.68
0.67
0.69
0.69
0.68
0.71
0.70
0.69
0.73
0.71
0.71
0.74
0.72
0.72
0.75
0.74
0.73
0.79
0.77
0.76
0.83
0.80
0.79
0.48
0.44
0.42
0.54
0.49
0.47
0.60
0.56
0.53
0.67
0.62
0.60
0.75
0.70
0.67
0.83
0.78
0.75
0.87
0.82
0.79
0.92
0.86
0.83
1.01
0.95
0.92
1.10
1.04
1.02
13.0
13.2
13.3
12.8
12.9
13.0
12.6
12.7
12.8
12.5
12.6
12.6
12.4
12.5
12.5
12.1
12.3
12.4
12.0
12.2
12.3
11.8
12.0
12.1
11.3
11.6
11.8
10.7
11.1
11.3
40
50
9.7
10.1
10.6
10.9
11.3
11.9
12.2
12.5
13.1
13.5
13.1
13.7
14.1
13.7
14.3
14.7
60
70
80
85
90
9.1
9.3
7.9
8.4
8.6
6.9
7.5
7.8
100
110
Operation Not Recommended
LEGEND
— Dry Bulb
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pres-
sure differential at unit cannot exceed MOPD or water valve can-
not close)
DB
EAT
— Entering Air Temperature (F)
EWT — Entering Water Temperature (F)
GPM — Gallons per Minute
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 volt-
age 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.
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.
17
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Performance data (cont)
50KQL12 — NOMINAL AIRFLOW 350 CFM
WATER PRESSURE DROP (ft wg)
Without Motorized
COOLING — EAT 80 F DB/67 F WB
HEATING — EAT 70 F
EWT
(F)
GPM
With Cv = 2.9
MOPD = 125 psi
6.5
Input
Power
Input
Power
TC
SC
SHR
THR
TC
THA
Valve
2.1
3.8
6.1
1.8
3.3
5.3
1.6
3.1
4.8
1.6
2.9
4.5
1.5
2.7
4.3
1.4
2.6
4.1
1.3
2.5
3.9
1.3
2.4
3.8
1.3
2.3
3.7
1.2
2.2
3.4
1.1
2.0
3.2
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
1.6
2.3
3.1
Operation not recommended
20
30
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
11.4
19.6
6.5
Operation not recommended
8.7
9.4
9.7
0.78
0.81
0.83
0.83
0.86
0.87
0.88
0.89
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.98
0.99
1.00
0.99
1.00
1.01
1.00
1.01
1.01
6.0
6.6
6.9
7.1
7.7
8.0
8.3
8.8
9.2
14.8
14.9
15.0
14.4
14.7
14.8
14.0
14.3
14.5
13.5
13.8
14.0
12.9
13.3
13.5
12.2
12.7
12.9
11.8
12.3
12.6
11.5
12.0
12.2
10.7
11.2
11.5
9.9
9.8
9.9
9.9
9.6
9.7
9.8
9.5
9.6
9.6
9.3
9.4
9.5
9.1
9.2
9.3
8.9
9.0
9.1
8.8
8.9
9.0
8.6
8.8
8.9
8.4
8.6
8.6
8.1
8.3
8.4
0.66
0.66
0.66
0.67
0.66
0.66
0.68
0.67
0.67
0.69
0.68
0.68
0.71
0.69
0.69
0.73
0.71
0.71
0.74
0.72
0.72
0.75
0.73
0.73
0.78
0.76
0.75
0.82
0.79
0.78
0.60
0.55
0.53
0.68
0.62
0.59
0.76
0.70
0.67
0.86
0.79
0.76
0.97
0.90
0.86
1.10
1.01
0.97
1.16
1.07
1.03
1.23
1.14
1.09
1.37
1.27
1.23
1.52
1.42
1.37
16.8
16.8
16.8
16.7
16.8
16.8
16.6
16.7
16.7
16.4
16.5
16.6
16.2
16.3
16.4
15.9
16.1
16.2
15.8
16.0
16.1
15.7
15.8
15.9
15.4
15.6
15.7
15.1
15.3
15.4
9.9
10.6
11.0
11.2
11.8
12.3
12.6
13.1
13.6
13.9
14.3
14.9
15.2
15.5
16.0
16.3
16.0
16.6
16.9
16.5
17.1
17.3
40
50
9.5
9.9
60
10.4
10.7
11.0
11.6
11.9
12.1
12.7
12.9
12.6
13.2
13.4
13.1
13.6
13.9
70
80
85
90
11.4
19.6
6.5
11.4
19.6
6.5
100
110
Operation Not Recommended
11.4
19.6
10.4
10.7
LEGEND
— Dry Bulb
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pres-
sure differential at unit cannot exceed MOPD or water valve can-
not close)
DB
EAT
— Entering Air Temperature (F)
EWT — Entering Water Temperature (F)
GPM — Gallons per Minute
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 volt-
age 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.
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.
18
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50KQL15 — NOMINAL AIRFLOW 400 CFM
WATER PRESSURE DROP (ft wg)
COOLING — EAT 80 F DB/67 F WB
HEATING — EAT 70 F
EWT
(F)
GPM
Without Motorized
Valve
With Cv = 2.9
MOPD = 125 psi
Input
Input
Power
TC
SC
SHR
THR
TC
THA
Power
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.8
2.7
3.6
1.4
3.0
4.9
1.2
2.6
4.2
1.3
2.3
3.6
1.2
2.2
3.5
1.2
2.1
3.4
1.1
2.0
3.2
1.1
2.0
3.1
1.1
1.9
3.0
1.0
1.9
3.0
1.0
1.8
2.9
1.0
1.8
2.9
1.8
3.9
6.5
1.6
3.4
5.7
1.6
3.1
5.1
1.6
3.1
5.0
1.6
3.0
4.9
1.5
2.9
4.8
1.5
2.8
4.6
1.5
2.8
4.6
1.4
2.7
4.5
1.4
2.7
4.4
1.4
2.7
4.4
Operation not recommended
20
30
Operation not recommended
9.9
10.4
10.7
10.9
11.6
12.1
12.3
13.1
13.7
14.0
14.7
15.4
15.8
16.4
17.2
17.6
18.0
18.8
19.3
18.8
19.6
20.0
19.5
20.2
20.6
0.93
0.95
0.96
0.97
0.99
1.00
1.01
1.03
1.05
1.05
1.07
1.09
1.09
1.10
1.12
1.13
1.13
1.15
1.15
1.14
1.15
1.16
1.15
1.16
1.16
6.7
7.2
7.4
7.6
8.2
8.7
8.9
9.6
10.1
10.4
11.1
11.7
12.1
12.6
13.4
13.8
14.1
14.9
15.3
14.8
15.6
16.0
15.5
16.3
16.6
16.5 11.2
16.6 11.1
16.6 11.0
16.3 11.1
16.5 11.2
16.5 11.2
15.8 11.0
16.2 11.1
16.3 11.1
15.2 10.8
15.6 10.9
15.8 11.0
14.3 10.5
14.9 10.7
15.2 10.8
13.4 10.2
14.0 10.4
14.3 10.5
12.9 10.0
13.5 10.3
13.9 10.4
0.67
0.67
0.67
0.68
0.68
0.67
0.70
0.69
0.68
0.71
0.70
0.69
0.73
0.72
0.71
0.76
0.74
0.73
0.78
0.76
0.75
0.80
0.78
0.76
0.85
0.82
0.80
0.91
0.87
0.85
0.68
0.62
0.60
0.76
0.70
0.67
0.85
0.78
0.75
0.94
0.87
0.84
1.04
0.97
0.94
1.16
1.08
1.05
1.21
1.14
1.10
1.27
1.20
1.16
1.40
1.32
1.28
1.53
1.45
1.41
18.8
18.7
18.6
18.9
18.9
18.8
18.7
18.8
18.9
18.4
18.6
18.7
17.9
18.2
18.4
17.3
17.7
17.9
17.0
17.4
17.6
16.7
17.1
17.3
15.9
16.4
16.6
15.0
15.5
15.8
40
50
60
70
80
85
12.3
9.9
13.0 10.1
13.4 10.2
90
11.1
11.9
12.2
9.8
10.6
11.0
9.4
9.7
9.8
8.9
9.2
9.4
100
110
Operation Not Recommended
LEGEND
— Dry Bulb
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pres-
sure differential at unit cannot exceed MOPD or water valve can-
not close)
DB
EAT
— Entering Air Temperature (F)
EWT — Entering Water Temperature (F)
GPM — Gallons per Minute
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 volt-
age 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.
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.
19
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Performance data (cont)
50KQL19 — NOMINAL AIRFLOW 460 CFM
WATER PRESSURE DROP (ft wg)
COOLING — EAT 80 F DB/67 F WB
HEATING — EAT 70 F
EWT
(F)
GPM
Without Motorized
With Cv = 2.9
MOPD = 125 psi
Input
Input
Power
TC
SC
SHR
THR
TC
THA
Power
Valve
3.0
6.0
9.7
2.1
4.2
6.8
2.0
3.8
6.2
2.0
3.7
6.0
1.9
3.5
5.8
1.8
3.3
5.5
1.7
3.2
5.2
1.6
3.1
5.0
1.6
3.0
4.9
1.6
2.9
4.8
1.6
3.0
4.9
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
2.4
3.6
4.8
3.7
7.5
12.5
2.8
5.8
9.6
2.7
5.4
9.0
2.6
5.2
8.8
2.5
5.1
8.5
2.4
4.9
8.2
2.4
4.7
7.9
2.3
4.6
7.8
2.3
4.6
7.7
2.2
4.5
7.5
2.3
4.5
7.6
Operation not recommended
11.2 7.6
20
30
Operation not recommended
1.05
1.09
1.10
1.11
1.14
1.16
1.17
1.21
1.23
1.24
1.27
1.30
1.31
1.34
1.36
1.37
1.40
1.42
1.43
1.42
1.44
1.46
1.45
1.47
1.48
20.1 13.2
20.5 13.4
20.7 13.5
19.4 12.9
19.8 13.1
20.0 13.2
18.7 12.5
19.2 12.7
19.4 12.8
18.0 12.1
18.5 12.4
18.7 12.5
17.2 11.8
17.7 12.0
17.9 12.1
16.3 11.4
16.8 11.6
17.1 11.7
15.8 11.2
16.4 11.4
16.7 11.5
15.3 11.0
15.9 11.2
16.2 11.3
14.1 10.5
14.8 10.8
15.1 10.9
12.8 10.0
13.6 10.3
13.9 10.5
0.66
0.66
0.65
0.66
0.66
0.66
0.67
0.66
0.66
0.67
0.67
0.67
0.68
0.68
0.67
0.70
0.69
0.69
0.71
0.70
0.69
0.72
0.71
0.70
0.75
0.73
0.72
0.78
0.76
0.75
0.81
0.76
0.74
0.90
0.84
0.82
1.00
0.94
0.91
1.11
1.04
1.01
1.23
1.16
1.12
1.36
1.28
1.24
1.43
1.35
1.31
1.50
1.42
1.38
1.65
1.56
1.52
1.81
1.72
1.68
22.8
23.1
23.2
22.5
22.7
22.8
22.1
22.4
22.5
21.8
22.0
22.1
21.4
21.6
21.8
20.9
21.2
21.3
20.7
21.0
21.1
20.4
20.7
20.9
19.8
20.1
20.3
19.0
19.4
19.6
12.2
12.6
12.8
13.8
14.3
14.5
15.5
16.0
16.3
17.2
17.8
18.1
18.8
19.4
19.8
20.3
20.9
21.3
21.0
21.6
21.9
21.7
22.2
22.5
8.5
8.9
9.0
9.9
40
10.3
10.6
11.4
11.9
12.1
12.8
13.4
13.6
14.2
14.8
15.1
15.6
16.1
16.4
16.2
16.7
16.9
16.7
17.2
17.4
50
60
70
80
85
90
100
110
Operation Not Recommended
LEGEND
— Dry Bulb
NOTES:
1. MOPD = Maximum Operating Pressure Differential (water pres-
sure differential at unit cannot exceed MOPD or water valve can-
not close)
DB
EAT
— Entering Air Temperature (F)
EWT — Entering Water Temperature (F)
GPM — Gallons per Minute
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 volt-
age 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.
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.
20
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CORRECTION FACTORS — ENTERING AIR
HEATING
COOLING
EAT
DB
(F)
EAT
WB
(F)
Sensible Capacity Entering Dry Bulb (F)
Input
Power
Power
Input
TC
THA
TC
THR
70
75
80
80.6
85
90
95
60
65
68
70
75
80
1.011
1.004
1.002
1.000
0.996
0.991
0.989
0.994
0.997
1.000
1.007
1.018
1.007
1.004
1.002
1.000
0.995
0.990
60
65
66.2
67
70
75
0.893
0.964
0.983
1.000
1.049
1.118
0.889
0.692
0.645
0.613
—
1.087
0.884
0.838
0.806
0.683
—
*
*
*
*
*
*
*
*
*
*
*
*
0.964
0.988
0.995
1.000
1.016
1.037
0.902
0.967
0.985
1.000
1.046
1.106
1.085
1.036
1.000
0.879
0.676
1.108
1.059
1.027
0.902
0.698
1.231
1.199
1.077
0.866
1.274
1.068
1.415
1.266
—
*Sensible Capacity equals total capacity.
CORRECTION FACTORS — AIRFLOW
COOLING CORRECTIONS
HEATING CORRECTIONS
Input
% OF
NOMINAL
AIRFLOW
Input
TC
SC
THR
TC
THA
Power
Power
75%
81%
0.951
0.964
0.979
0.990
1.000
1.010
1.019
0.860
0.894
0.936
0.969
1.000
1.033
1.069
0.963
0.973
0.984
0.992
1.000
1.008
1.016
0.952
0.965
0.979
0.990
1.000
1.010
1.019
0.990
0.993
0.996
0.998
1.000
1.002
1.003
1.054
1.035
1.019
1.008
1.000
0.994
0.988
0.966
0.977
0.987
0.994
1.000
1.005
1.011
88%
94%
100%
106%
113%
LEGEND
DB — Dry Bulb
EAT — Entering Air Temperature (F)
SC — Sensible Capacity
TC — Total Capacity
THA — Total Heat of Absorption
THR — Total Heat of Rejection
50KQL CONSOLE BLOWER PERFORMANCE 60 Hz
RATED
AIRFLOW
(cfm)
AIRFLOW (cfm)
50KQL
Low Speed
High Speed
07
09
12
15
19
240
300
350
400
460
190
240
300
340
400
240
300
350
400
460
NOTES:
1. Fan speed is field adjustable.
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.
21
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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 challeng-
ing design requirements.
• Control configurations such as stand alone, DDC, DCV,
and VVT®.
• WSHP efficiency/operational cost comparison chart.
• System variations such as a system without a boiler,
variable pumping, and VAV for interior use.
Ground water systems
AQUAZONE PRODUCT GUIDE
To use Aquazone units in ground water applications, you
should specify extended range. This will provide factory-
installed 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 condi-
tions. Refer to the Water Conditioning section for proper
coaxial coil material selection.
TYPE
SIZE (tons)
50 SERIES
APPLICATION
Standard
Efficiency
1/2-5
Efficient, compact, low cost
alternative for retrofit or new
boiler/tower systems.
50RHC,RVC
Horizontal/Vertical
High
Efficiency
1/2-5
Efficient, adaptable unit for
new boiler/tower, ground
water, or ground loop systems.
50RHR,RVR
Horizontal/Vertical
Premium
Efficiency
11/4-6
Premium, ultra efficient unit for
new boiler/tower, ground
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 build-
ing. The water is then pumped back into the ground
through a discharge well as it leaves the building. An addi-
tional heat exchanger is usually installed between the build-
ing water piping system and the ground water piping sys-
tem. This design limits piping and excavation.
50RHS,RVS
Horizontal/Vertical
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.
50HQ,VQ
Horizontal/Vertical
Large Capacity
61/2-25
Console
1/2-11/2
50KQ
Rooftop
3-20
50RTG
Water-to-
Water
3-30
50RWS
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.
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 be-
tween 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 ab-
sorption and rejection and is designed for entering water
temperatures between 60 F and 90 F. Within this temper-
ature 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.
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.
Refer to the Carrier Water 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.
Horizontal ground loop — Use this system when ade-
quate space is available and trenching can be easily accom-
plished. 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 bore-
hole 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
• Air distribution design including diffuser selection/
layout and ductwork design.
• Hydronic system design including pipe sizing/layout
and boiler/tower sizing.
22
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WATER QUALITY GUIDELINES
concealed below ground. The number of loops required de-
pends on ground conditions, heating and cooling require-
ments, 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 dis-
cards excess heat into the air and increases the cooling
performance of the ground loop.
CONDITION
ACCEPTABLE LEVEL
7 to 9 range for copper. Cupronickel may be
used in the 5 to 9 range.
pH
Calcium and magnesium carbonate should not
exceed 20 grains per gallon (350 ppm).
Total Hardness
Iron Oxides
Iron Bacteria
Less than 1 ppm.
No level allowable.
Max Allowable
Level
Coaxial
Metal
Ammonia,
Condensate drainage
0.5 ppm
Cu
Ammonium Hydroxide
Corrosion*
Ammonium Chloride,
Ammonium Nitrate
Ammonium Sulfate
Chlorine/Chlorides
Hydrogen Sulfide†
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 un-
obstructed 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 stop-
page 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.
0.5 ppm
Cu
0.5 ppm
0.5 ppm
None Allowable
Cu
CuNi
—
Use Cupronickel heat exchanger when
concentrations of calcium or sodium chloride
are greater than 125 ppm are present.
(Seawater is approximately 25,000 ppm.)
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 solu-
tion, 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.
Acoustical design
Water conditioning
Sound power levels represent the sound that the source, the
WSHP unit, produces with no regard to attenuation be-
tween 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 com-
municate effectively over the background noise of the air-
conditioning 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 val-
ue 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.
In some applications, maintaining proper water quality
may require higher corrosion protection for the water-to-
refrigerant heat exchanger. Water quality varies from loca-
tion to location and is unique for each job. Water charac-
teristics such as pH value, alkalinity, hardness, and specific
conductance are important when considering any WSHP
application. Water typically includes impurities and hard-
ness that must be removed. The required treatment de-
pends 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.
It is important to know how to convert the unit ratings
from sound power (Lw) to sound pressure (Lp). This con-
version depends on the specifics of the installation’s acous-
tical environment. Assessing an area’s acoustical design re-
quires 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.
NOTE: In most commercial water loop applications, Aqua-
zone™ 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.
Some of the factors that affect conversion of sound
power to sound pressure and consequent NC level include:
• Type of acoustical ceiling
• Use of metal or flex duct
• Absorption in the occupied space
• Location in the occupied space
• Open or closed layout plan
• Use of open or ducted returns
• Orientation of unit to occupant
• Use of lined or unlined duct
23
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Application data (cont)
OCTAVE BAND SOUND PRESSURE LEVEL (Lp)
AIR LIMITS
ASSOCIATED WITH NC CURVES
50KQL
OCTAVE BAND SOUND PRESSURE LEVEL (Lp)
NOISE
Cooling
50 F
80 F
100 F
50 F
Heating
50 F
66 F
86 F
50 F
CRITERIA
CURVES
Frequency (Hz)
Min. Ambient Air
Rated Ambient Air
Max. Ambient Air
Min. Entering Air
Rated Entering Air, db/wb
Max. Entering Air, db/wb
63
49
52
54
58
61
64
67
71
74
77
80
125
36
41
45
49
53
57
61
64
68
71
75
250
26
33
38
41
45
50
54
58
63
67
71
500
1000
17
22
27
31
36
41
46
51
56
61
66
2000
14
19
24
29
34
39
44
49
54
59
64
4000
12
17
22
28
33
38
43
48
53
58
63
8000
11
16
21
27
32
37
42
47
52
57
62
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
17
27
31
36
40
45
49
54
58
63
68
80/66 F
100/82 F
68 F
80 F
WATER LIMITS
50KQL
Cooling
30 F*
86 F
Heating
21 F*
70 F
Min. Entering Water
Normal Entering Water
Max. Entering Water
110 F
90 F
WSHP sound control
LEGEND
db
wb
—
—
Dry Bulb
Wet Bulb
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 equip-
ment to determine the ductwork, ceiling and room sound
attenuation effect.
*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 param-
eters at normal conditions.
Solenoid valves
In applications using variable flow pumping, solenoid
valves can be factory installed and operated from the con-
trol board in the Aquazone™ WSHP unit.
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.
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:
Operating limits
Environment
This equipment is designed for indoor installation ONLY.
Power supply
A voltage variation of 10% of nameplate utilization volt-
age is acceptable.
• Equipment and performance may suffer with high con-
centrations 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
Starting conditions
The 50KQL unit will start and operate in an ambient tem-
perature 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.
Glycol promotes galvanic corrosion in systems of dissimilar
metals. The result is corrosion of one metal by the other,
causing leaks.
Electrical data
VOLTAGE
Min
COMPRESSOR
RLA LRA
VOLTS-PHASE
(60 Hz)
FAN MOTOR
FLA
TOTAL UNIT
FLA
MIN CIRCUIT
AMP
MAX FUSE/
HACR
50KQL
Max
127
253
291
127
253
291
127
253
291
253
291
253
291
115-1
208/230-1
265-1
104
187
239
104
187
239
104
187
239
187
239
187
239
7.1
3.7
2.8
9.0
4.7
3.8
10.6
6.1
4.8
7.0
5.4
7.7
5.8
46.5
19.0
16.0
46.5
23.0
16.0
63.0
29.0
21.6
33.2
29.0
38.0
29.0
0.50
0.33
0.35
1.30
0.50
0.50
1.30
0.50
0.50
1.10
1.00
1.10
1.00
7.6
4.0
3.1
10.3
5.2
4.3
11.9
6.6
5.3
8.1
6.4
8.8
6.8
9.3
5.0
3.8
12.5
6.3
5.3
14.6
8.1
6.5
9.8
7.8
15
15
15
20
15
15
25
15
15
15
15
15
15
07
115-1
09
12
208/230-1
265-1
115-1
208/230-1
265-1
208/230-1
265-1
208/230-1
265-1
15
19
10.7
8.2
LEGEND
Full Load Amps
FLA
—
HACR — Heating, Air Conditioning and Refrigeration
LRA
RLA
—
—
Locked Rotor Amps
Rated Load Amps
24
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Typical wiring schematics
MANUAL CHANGEOVER WITH COMPLETE C CONTROLLER
GROUND
COMPRESSOR
BLU
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER
H
S
CAP
RED
R
CONDUCTORS ONLY.
SEE NOTE 2
8
4
6
2
C
RED
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
POWER SUPPLY CONNECTION
CR
F
BLK
BLK
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED O = OPEN
A (LOW)
RED
5A
SEE
NOTE 3
TRANS
BLK
BLK
TERMINALS
1
2
3
4
5
6
7
8
CB*
24V
BLK
5
1A 1B 2A 3A 4A 5A 6A 7A 8A
RED
6A
6
BLK
ORG
230V
STOP
X
X
X
X
O
O
O
O
O
O
X
X
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
BLK
7A
PBS
7
FAN ONLY
LOW FAN
HIGH FAN
O
TRANSFORMER PRIMARY
LEAD COLORS
SEE
NOTE 7
SEE
NOTE 7
1
0
CR
VOLTAGE
LEAD COLOR
115
208
230
265
WHT
RED
ORG
BRN
BLU
BRN
YEL
BR BRG CCG
CC
BRN
BRN
BRN
YEL
C
TEST PINS
SEE
BR2
COMPR.
RELAY
RED
1
HP
2
3
LOC
4
5
FP1
6
R
Y
HP
RED
BLU
BR1
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
NOTE 4
JW3
FP1
JW2
FP2
LOC
BRN
GRY
GRY
VIO
YEL
2
2A
3A
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
YEL
Y
1
FP1
SEE
NOTE 4
FP2
RED
PBS
W
DIP SWITCH
UMT
3
ORG
RED
2
1
PM: DISABLED/
ENABLED
STAGE 2: 2/1
NOT USED
NOT USED
3
O
G
YEL
7
FP2
2
3
4
VIO
8
RED
GRY
RED
BRN
ORG
NOT USED
YEL
R
9
10
5
5A
RV
RVS
CO
RED RED
C
BRN
5
FP1/FP2
FAULTS: 3/1
JW1
AL1
AL2
OFF ON
6
7
6A
RED
CO12
P2
STATUS
LED
G
YEL
SEE
NOTE 6
RED
1
ALARM
RELAY
A
P1
24V
DC
COMPLETE C
MICRO-
PROCESSOR
CONTROL
LOGIC
7A
BRN
GROUND
PB
1A
EH1
EH2
CAP
RED
YEL
DM
1B
CO P3
YEL YEL
ORG
BRN
WV
TRANSFORMER
CR
BR1
BR2
PBS
COMPLETE
C
CONTROL
UMT
LEGEND
*Optional wiring.
NOTES:
AL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Motor
Blower Relay
Relay/Contactor Coil
Solenoid Coil
BM
1. Compressor and blower motor thermally pro-
tected internally.
BR
CAP
CB
Capacitor
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.
Circuit Breaker
CO
Sensor, Condensate Overflow
Compressor Relay
Thermistor
CR
DM
Damper Motor
Circuit Breaker
FP1
FP2
HP
Sensor, Water Coil Freeze Protection
Sensor, Air Coil Freeze Protection
High-Pressure Switch
Jumper Wire for Alarm
Loss of Charge Pressure Switch
Power Terminal Block
Push Button Switch
Relay Contacts-N.O.
Switch-Temperature
For 203/1/60 switch RED and ORG leads at L1
and insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
JW1
LOC
PB
Switch-High Pressure
Switch-Low Pressure
Ground
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.)
PBS
PM
Performance Monitor
RVS
TRANS
UMT
WV
Reversing Valve Solenoid
Transformer
Unit Mounted Thermostat
Water Valve
Wire Nut
Mate-N-Lock
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
25
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Typical wiring schematics (cont)
MANUAL CHANGEOVER WITH DELUXE D CONTROLLER
GROUND
COMPRESSOR
BLU
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
H
S
CAP
RED
R
8
4
6
2
C
RED
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
CR
F
BLK
BLK
POWER SUPPLY CONNECTION
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
A (LOW)
SEE
NOTE 3
TRANS
CB*
24V
BLK
ORG
230V
RED
GRY
BLK
YEL
BLU
SEE
NOTE 7
TRANSFORMER PRIMARY
LEAD COLORS
C
R
FAN ENABLE
VOLTAGE
LEAD COLOR
R C S
S
C
RELAY
COM2 COM1
115
208
230
265
WHT
RED
ORG
BRN
COM
P1
Y1
NO
YEL
RED
2
BLK
YEL
1
2
2A
ORG
UMT
GRY
Y2
FAN
ORG
SPEED
RELAY
W1
O/W2
G
3
4
5
COM
RED
2
3A
3
3
NC
DELUXE D
MICROPROCESSOR
CONTROL LOGIC
NO
GRY
RED
R
C
6
7
8
BRN
1
RED
RED
BLU
BRN
GRY
GRY
HP
HP
1A
BRN
2
3
4
AL1
SEE
NOTE 6
1
ALARM
RELAY
LOC
LOC
FP1
P2
AL2
R
PBS
1B
DM
YEL YEL YEL
JW4
ORG
RED
STATUS
TEST
FAULT
G
5
6
AL2
DRY
FP1
SEE
Y
TIME CLOCK
RED
5
GRY
NOTE 4
7
8
9
VIO
VIO
BRN
ORG
NSB
C
R
FP2
RV
CLOSED-UNOCCUPIED
FP2
BRN
OS
RV RELAY
ESD
OVR
H
RVS
CO
10
5A
WHT
RED PBS GRY
NOT USED
YEL
TEST
PINS
GRY
YEL
6
6A
RED WHT
NLL
CO 12
P7
A
WV
JW3
RED
7
SEE
P3
24V
DC
FP1 LOW
7A
GRY
NOTE 4
R
JW2
FP2 LOW
JW1
LP N.O.
EH1
EH2
P6
NO1
NC1
COM
NO2
NC2
COM
R
ACC1
BLOWER MOTOR WIRING
RELAY
OFFON
OFFON
CCG
UNIT SIZE POLE A
POLE B
BRN
1
PM: DISABLE/ENABLE
UNIT STAGE: 2/1
T’STAT: HEAT COOL/HEAT PUMP
RV ON B/RV ON O
DEHUMID/NORMAL
NOT USED
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ACC1
FUNCTIONS
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
ACC2
COMPR
RELAY
CR
YEL
RELAY
GROUND
LOG
ACC2
FUNCTIONS
0
PB
CC
CAP
BOILERLESS: ENABLE/DISABLE
BOILERLESS: 40°F/50°F
H: HI FAN/DEHUMID
NOT USED
S2
DIP SWITCH PACKAGE
S1
DIP SWITCH PACKAGE
TRANSFORMER
CR
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED
TERMINALS
O = OPEN
BR 1
(LO)
1
2
3
4
5
6
7
8
DELUXE D
CONTROL
1A 1B 2A 3A 4A 5A 6A 7A 8A
OS
STOP
FAN ONLY
LOW COOL
HIGH COOL O
LOW HEAT
HIGH HEAT
X
X
O
O
O
X
X
O
O
O
O
X
X
O
O
O
O
O
O
X
O
O
O
O
X
O
X
O
O
O
O
O
O
X
O
X
O
O
O
X
O
X
O
O
O
O
O
X
BR 2
(HI)
UMT
X
X
PBS
X
X
O
LEGEND
AL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Motor
Blower Relay
*Optional wiring.
NOTES:
Printed Circuit Trace
BM
BR
Relay/Contactor Coil
Solenoid Coil
1. Compressor and blower motor thermally protected
internally.
CAP
CB
Capacitor
Circuit Breaker
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.
CO
Sensor, Condensate Overflow
Compressor Relay
CR
Thermistor
DM
Damper Motor
FP1
FP2
HP
Sensor, Water Coil Freeze Protection
Sensor, Air Coil Freeze Protection
High-Pressure Switch
Jumper Wire for Alarm
Loss of Charge Pressure Switch
Night Low Limit Switch
Override Switch
Circuit Breaker
For 203/1/60 switch RED and ORG leads at L1 and insu-
late RED lead.
Transformer is energy limiting or may have circuit
breaker.
Relay Contacts-N.O.
Switch-Temperature
JW1
LOC
NLL
OS
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.
Switch-High Pressure
Switch-Low Pressure
PB
PBS
PM
RVS
TRANS
UMT
WV
Power Terminal Block
Push Button Switch
Performance Monitor
Reversing Valve Solenoid
Transformer
Ground
7. Transformer secondary ground via Deluxe
D
board
Unit Mounted Thermostat
Water Valve
standoffs and screws to control box. (Ground available
from top two standoffs as shown.)
Wire Nut
Mate-N-Lock
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
26
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AUTOMATIC CHANGEOVER WITH COMPLETE C CONTROLLER
GROUND
COMPRESSOR
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
H
BLU
S
CAP
RED
R
8
4
6
2
C
RED
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
CR
POWER SUPPLY CONNECTION
F
BLK
BLK
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
A (LOW)
RED
5A
SEE
NOTE 3
TRANS
BLK
BLK
CB*
24V
BLK
5
RED
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED O = OPEN
TERMINALS
6A
6
BLK
ORG
230V
BLK
7A
PBS
7
1
2
3
4
5
6
7
8
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOP
X
X
X
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
TRANSFORMER PRIMARY
LEAD COLORS
FAN ONLY
LOW FAN
HIGH FAN
VOLTAGE
LEAD COLOR
SEE
NOTE 7
SEE
NOTE 7
1
0
115
208
230
265
WHT
RED
ORG
BRN
O
BRN
YEL
BR BRG CCG
CC
BLU
BRN
BRN
BRN
YEL
C
TEST PINS
SEE
BR2
BR1
COMPR.
RELAY
RED
RED
BLU
BRN
GRY
GRY
VIO
R
Y
1
2
HP
HP
NOTE 4
3
LOC
4
5
FP1
6
JW3
LOC
UMT
ORG
FP1
YEL
4
1
JW2
Y
W
FP2
5
FP1
DIP SWITCH
YEL
SEE
ORG
2
1
PM: DISABLED/
ENABLED
STAGE 2: 2/1
NOT USED
NOT USED
NOTE 4
O
RED
3A
6
3
7
RED
RED
FP2
FP2
2
3
4
G
8
VIO
3
PBS
RED
R
BRN
ORG
9
10
RV
RVS
5
5A
C
RED RED
BRN
YEL
5
FP1/FP2
JW1
NOT USED
YEL
FAULTS: 3/1
AL1
AL2
OFF ON
6
7
6A
RED
CO12
P2
24V
DC
CO
STATUS
G
LED
RED
YEL
SEE
ALARM
RELAY
A
P1
NOTE 6
7A
COMPLETE C
MICRO-
PROCESSOR
CONTROL
LOGIC
EH1
EH2
P3
GROUND
PB
CAP
DM
YEL YEL
BRN
ORG BRN
CO
WV
BLOWER MOTOR WIRING
TRANSFORMER
UNIT SIZE POLE A POLE B
CR
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
BR1
PBS
COMPLETE
C
CONTROL
BR2
UMT
*Optional wiring.
NOTES:
LEGEND
AL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Motor
Printed Circuit Trace
Relay/Contactor Coil
1. Compressor and blower motor thermally pro-
tected internally.
BM
BR
Blower Relay
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.
CAP
CB
Capacitor
Circuit Breaker
Solenoid Coil
Thermistor
CO
Sensor, Condensate Overflow
Compressor Relay
CR
DM
Damper Motor
Circuit Breaker
FP1
FP2
HP
Sensor, Water Coil Freeze Protection
Sensor, Air Coil Freeze Protection
High-Pressure Switch
Jumper Wire for Alarm
Loss of Charge Pressure Switch
Power Terminal Block
Relay Contacts-N.O.
Switch-Temperature
Transformer is energy limiting or may have cir-
cuit breaker.
JW1
LOC
PB
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 con-
tact, 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.)
Switch-High Pressure
Switch-Low Pressure
Ground
PBS
PM
Push Button Switch
Performance Monitor
RVS
TRANS
UMT
WV
Reversing Valve Solenoid
Transformer
Unit Mounted Thermostat
Water Valve
Wire Nut
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
Mate-N-Lock
27
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Typical wiring schematics (cont)
AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER
GROUND
COMPRESSOR
BLU
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
H
S
CAP
RED
R
8
4
6
2
C
RED
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
CR
POWER SUPPLY CONNECTION
F
BLK
BLK
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
A (LOW)
RED
GRY
CB*
BLK
TRANS
ORG
230V
BLK
24V
BLU
SEE
NOTE 3
YEL
P1
SEE
NOTE 7
TRANSFORMER PRIMARY
LEAD COLORS
C
R
FAN ENABLE
R C S
S
C
VOLTAGE
LEAD COLOR
RELAY
COM2 COM1
COM
NO
115
208
230
265
WHT
RED
ORG
BRN
YEL
Y1
1
2
1
4
UMT
YEL
RED
ORG
GRY
Y2
FAN
ORG
SPEED
COM
W1
O/W2
G
3
4
5
RELAY
6
2
5
RED
3
GRY
BRN
NC
NO
DELUXE D
MICROPROCESSOR
CONTROL LOGIC
R
C
6
7
8
3
3A
1
2
RED
RED
BLU
BRN
GRY
GRY
HP
HP
BRN
AL1
SEE
NOTE 6
3
4
ALARM
RELAY
LOC
LOC
FP1
P2
AL2
R
DM
JW4
ORG
RED
TIME CLOCK
YEL YEL YEL
G
STATUS
TEST
FAULT
R
5
AL2
DRY
FP1
SEE
6
7
Y
RED
GRY
NOTE 4
VIO
VIO
NSB
C
FP2
CLOSED-UNOCCUPIED
8
9
10
FP2
BRN
OS
RV RELAY
BRN
ORG
RV
ESD
OVR
H
RVS
5
5A
WHT
RED PBS GRY
NOT USED
YEL
TEST
PINS
GRY
YEL
6
6A
RED WHT
NLL
CO
12
CO
P7
A
WV
JW3
SEE
RED
7
P3
24V
DC
FP1 LOW
NOTE 4
7A
GRY
R
JW2
FP2 LOW
JW1
LP N.O.
EH1
EH2
P6
NO1
NC1
COM
NO2
NC2
COM
R
ACC1
RELAY
OFFON
OFFON
CCG
BRN
1
PM: DISABLE/ENABLE
UNIT STAGE: 2/1
T’STAT: HEAT COOL/HEAT PUMP
RV ON B/RV ON O
DEHUMID/NORMAL
NOT USED
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
ACC1
FUNCTIONS
ACC2
COMPR
RELAY
CR
RELAY
YEL
ACC2
FUNCTIONS
0
CC
BOILERLESS: ENABLE/DISABLE
BOILERLESS: 40°F/50°F
H: HI FAN/DEHUMID
NOT USED
GROUND
LOG
PB
S2
DIP SWITCH PACKAGE
S1
CAP
DIP SWITCH PACKAGE
TRANSFORMER
CR
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED O = OPEN
BR 1
(LO)
TERMINALS
1
2
3
4
5
6
7
8
BLOWER MOTOR WIRING
1A 1B 2A 3A 4A 5A 6A 7A 8A
UNIT SIZE
POLE A
POLE B
STOP
X
X
X
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
X
X
O
X
O
O
O
O
X
O
O
O
X
O
O
O
X
DELUXE D
CONTROL
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
OS
FAN ONLY
LOW FAN
HIGH FAN
BR 2
(HI)
O
UMT
PBS
LEGEND
*Optional wiring.
NOTES:
AL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Motor
Printed Circuit Trace
Relay/Contactor Coil
BM
BR
Blower Relay
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.
CAP
CB
Capacitor
Circuit Breaker
Solenoid Coil
Thermistor
CO
Sensor, Condensate Overflow
Compressor Relay
CR
DM
Damper Motor
For 203/1/60 switch RED and ORG leads at L1 and insulate
RED lead.
FP1
FP2
HP
Sensor, Water Coil Freeze Protection
Sensor, Air Coil Freeze Protection
High-Pressure Switch
Jumper Wire for Alarm
Loss of Charge Pressure Switch
Night Low Limit Switch
Override Switch
Circuit Breaker
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.
Relay Contacts-N.O.
JW1
LOC
NLL
OS
Switch-Temperature
Switch-High Pressure
PB
PBS
PM
RVS
TRANS
UMT
WV
Power Terminal Block
Push Button Switch
Switch-Low Pressure
Ground
7. Transformer secondary ground via Deluxe D board standoffs
and screws to control box. (Ground available from top two
standoffs as shown.)
Performance Monitor
Reversing Valve Solenoid
Transformer
Unit Mounted Thermostat
Water Valve
Wire Nut
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
Mate-N-Lock
28
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REMOTE-MOUNTED THERMOSTAT WITH COMPLETE C CONTROLLER
GROUND
COMPRESSOR
S
R
C
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
H
BLU
RED
CAP
RED
8
4
6
2
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
CR
POWER SUPPLY CONNECTION
F
BLK
BLK
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
A (LOW)
RED
SEE
NOTE 3
TRANS
COM
NO
BLK
CB*
24V
BLK
2
BLK
BR
1
BLK
FSS
ORG
230V
YEL
ORG
0
TRANSFORMER PRIMARY
LEAD COLORS
DM
BR
YEL
BRN
SEE
NOTE 7
1
1
0
VOLTAGE
LEAD COLOR
SEE
NOTE 7
CR
115
208
230
265
WHT
RED
ORG
BRN
TRANS
BLK
YEL GRY BRN BRN BRN
BR BRG CCG
YEL
CB
24V
RED
CC
(220V)
BLU
YEL
ORG (240V)
C
R
TEST PINS
SEE
BRN
TYPICAL HEAT PUMP T-STAT
SEE NOTE 5
COMPR.
RELAY
RED
RED
BLU
BRN
GRY
GRY
VIO
1
2
HP
HP
CLASS 1 WIRING
REQUIRED INSIDE
CONTROL BOX
CLASS 1 OR 2
WIRING ACCEPTABLE
OUTSIDE
NOTE 4
Y
3
LOC
4
5
FP1
6
JW3
LOC
CONTROL BOX
FP1
COMPRESSOR
Y
JW2
Y
FP2
FP1
W
O
G
R
C
DIP SWITCH
SEE
COOLING
FAN
O
G
R
C
L
1
PM: DISABLED/
ENABLED
STAGE 2: 2/1
NOT USED
NOT USED
NOTE 4
7
FP2
FP2
2
3
4
VIO
8
24 VAC
COMMON
ALARM
BRN
9
10
RVS
RV
ORG
5
FP1/FP2
FAULTS: 3/1
JW1
NOT USED
YEL
AL1
AL2
OFF ON
CO
STATUS
LED
CO12
P2
G
SEE
NOTE 6
ALARM
RELAY
A
24V
DC
COMPLETE C
MICRO-
PROCESSOR
CONTROL
LOGIC
P1
BRN
WV
YEL
EH1
EH2
P3
GROUND
PB
CAP
CO
TRANSFORMER
CR
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
BR
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
COMPLETE
C
CONTROL
*Optional wiring.
NOTES:
LEGEND
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.
AL
— Alarm Relay Contacts
— Blower Motor
— Blower Relay
— Capacitor
Printed Circuit Trace
Relay/Contactor Coil
BM
BR
CAP
CB
— Circuit Breaker
Solenoid Coil
Thermistor
CO
— Sensor, Condensate Overflow
— Compressor Relay
— Damper Motor
For 203/1/60 switch RED and ORG leads at L1
and insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
CR
DM
FP1
FP2
FSS
HP
— Sensor, Water Coil Freeze Protection
— Sensor, Air Coil Freeze Protection
— Fan Speed Switch
Circuit Breaker
Relay Contacts-N.O.
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.)
— High-Pressure Switch
Switch-High Pressure
Switch-Low Pressure
Ground
JW1
LOC
PB
— Jumper Wire for Alarm
— Loss of Charge Pressure Switch
— Power Terminal Block
PBS
PM
— Push Button Switch
— Performance Monitor
RVS
— Reversing Valve Solenoid
Wire Nut
TRANS — Transformer
Mate-N-Lock
WV
— Water Valve
---------- Field Line Voltage Wiring
Field Low-Voltage Wiring
29
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Typical wiring schematics (cont)
REMOTE-MOUNTED THERMOSTAT WITH DELUXE D CONTROLLER
GROUND
COMPRESSOR
BLU
NEUTRAL ON 265V
SYSTEMS
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY.
SEE NOTE 2
H
S
CAP
RED
R
8
4
6
2
C
RED
RED
C
L2
L1
REFER TO DISCONNECT
BOX FOR OPTIONAL
CR
POWER SUPPLY CONNECTION
F
BLK
BLK
L2 (ribbed)
GROUND
OPTIONAL
CORD
CONNECTION
2
1
B (HIGH)
BRN
YEL
BM
L1 (plain)
A (LOW)
RED
CB*
24V
BLK
TRANS
ORG
230V
BLK
SEE
NOTE 3
YEL
BLU
TRANSFORMER PRIMARY
LEAD COLORS
BRN
SEE
NOTE 7
1
3
VOLTAGE
LEAD COLOR
CLASS 1 OR 2 WIRING
ACCEPTABLE
115
208
230
265
WHT
RED
ORG
BRN
FSS
2
C
R
FAN ENABLE
RELAY
COM
R C S
S
C
GRY
GRY
OUTSIDE
CLASS 1 WIRING
COM2 COM1
CONTROL BOX REQUIRED INSIDE
P1
Y1
NO
COMPRESSOR
Y
1
2
3
4
5
6
7
8
FAN
Y1
W1
SPEED
RELAY
COM
NO
COOLING
O
O/W2
G
FAN
NC
G
DELUXE D
MICROPROCESSOR
CONTROL LOGIC
24 VAC
R
R
C
AL1
COMMON
C
1
RED
HP
HP
ALARM
X1
2
3
SEE
NOTE 6
JW4
RED
BLU
BRN
GRY
GRY
VIO
VIO
BRN
ORG
ALARM
RELAY
LOC
LOC
FP1
P2
AL2
R
NSB
C
ESD
OVR
H
4
5
6
7
8
9
TYPICAL HEAT
PUMP T-STAT
G
STATUS
RED
AL2 DRY
FP1
FP2
RV
SEE NOTE 5
SEE
Y
TEST
TIME CLOCK
NOTE
4
R
FAULT
FP2
BRN
CLOSED=UNOCCUPIED
RV
BRN
RELAY
RVS
10
WHT
NOT USED
YEL
TEST
PINS
CO12
P7
CO
NLL
BRN
ORG
YEL
A
WV
SEE
JW3
FP1 LOW
JW2
FP2 LOW
JW1
LP N.O.
P3
R
24V
DC
NOTE 4
RED
YEL
YEL
YEL
NO1
NC1
COM
NO2
NC2
COM
R
EH1
EH2
P6
DM
ACC1
OVERRIDE
WITH DIGITAL T-STAT
RELAY
OFF ON
CCG
BRN
1
1
PM: DISABLE/
ACC2
COMPR.
RELAY
OVERRIDE
OVERRIDE
ENABLE
OV
OV
CR
YEL
OFF ON
2
3
UNIT STAGE: 2/1
T-STAT: HEAT COOL/
HEAT PUMP
RELAY
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
1
2
3
4
5
6
7
8
0
ACC1
GROUND
CC
FUNCTIONS
LUG
4
5
6
7
RV ON B/RV ON O
DEHUMID/NORMAL
NOT USED
PB
CAP
ACC2
07
09
12
15
19
5
5
4
4
4
3
4
3
3
3
FUNCTIONS
H: HI FAN/DEHUMID
NOT USED
TRANSFORMER
CR
BOILERLESS:
ENABLE/DISABLE
BOILERLESS:
40°F/50°F
8
BR 1
(LO)
S1
S2
DIP SWITCH
PACKAGE
DIP SWITCH
PACKAGE
DELUXE
D
CONTROL
BR 2
(HI)
*Optional wiring.
NOTES:
LEGEND
AL
— Alarm Relay Contacts
— Blower Relay
Printed Circuit Trace
Relay/Contactor Coil
BR
1. Compressor and blower motor thermally protected
internally.
CAP
CB
— Capacitor
— Circuit Breaker
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.
CO
— Sensor, Condensate Overflow
— Compressor Relay
Solenoid Coil
Thermistor
CR
DM
— Damper Motor
FP1
FP2
FSS
HP
— Sensor, Water Coil Freeze Protection
— Sensor, Air Coil Freeze Protection
— Fan Speed Switch
— High-Pressure Switch
— Jumper Wire for Alarm
— Loss of Charge Pressure Switch
— Night Low Limit
For 203/1/60 switch RED and ORG leads at L1 and
insulate RED lead.
Transformer is energy limiting or may have circuit
breaker.
Circuit Breaker
Relay Contacts-N.O.
JW1
LOC
NLL
PB
PBS
PM
RVS
Switch-High Pressure
Switch-Low Pressure
Ground
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 avail-
able between AL1 and AL2.
— Power Terminal Block
— Push Button Switch
— Performance Monitor
— Reversing Valve Solenoid
Wire Nut
TRANS — Transformer
WV
---------- Field Line Voltage Wiring
— Water Valve
Mate-N-Lock
7. Transformer secondary ground via Deluxe D board
standoffs and screws to control box. (Ground available
from top two standoffs as shown.)
Field Low-Voltage Wiring
30
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PREMIERLINK™ CONTROLLER APPLICATIONS WITH COMPLETE C CONTROL
COMPLETE
C
CONTROL
PREMIER
LINK
PWR
Y
HS1/EXH/RVS
CR
W
CR
O
G
LEGEND
Control Relay
LWT — Leaving Water Temperature Sensor
SAT — Supply Air Temperature Sensor
SPT — Space Temperature Sensor
R
C
CR
—
CMP1
FAN
AL1
NOTE: Reversing valve is on in Cooling mode.
AL2
A
J5
J6
J4
L
W
T
S
P
T
S
A
T
PREMIERLINK CONTROLLER APPLICATIONS WITH DELUXE D CONTROL
PREMIER
LINK
PWR
DELUXE
D
CONTROL
Y1
Y2
HS2
HS1
W1
O/W2
G
LEGEND
CMP2
CMP1
FAN
LWT — Leaving Water Temperature Sensor
SAT — Supply Air Temperature Sensor
SPT — Space Temperature Sensor
NOTE: Reversing valve is on in Cooling mode.
R
C
AL1
J5
J6
J4
L
W
T
S
P
T
S
A
T
31
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Typical piping
50KQL PIPING DETAIL
5.36
3.28
(83)
(136)
Power Supply
3.01
(76)
1.84
(47)
30°
Water Out
Water In
0.87
(22)
Control Box
Optional
Autoflow
Valve
*16.66
(423)
Compressor
Access
7.5
(191)
Panel
Optional
Motorized
Water Valve
*1.94
(49)
*7.06
(179)
3.56
(90)
4.46
(113)
Water Connections
5/8” (15.9 mm)
OD Copper,
0.75
(19)
3.88
(99)
3.43
0.99
Condensate
5/8” (15.9 mm)
ID Vinyl Hose
(87) (25)
11.54
(293)
1/2” FPT or
1/2” MPT
Optional
Disconnect Box
(mounted to cabinet
not chassis)
RIGHT HAND CONFIGURATION
5.36
3.50
(89)
(136)
Power Supply
3.01
(76)
1.93
(49)
Water Out
Water In
Optional
Autoflow
Valve
30°
0.87
(22)
Optional
Motorized
Water Valve
3.42
(87)
Blower Deck
*16.66
(423)
7.5
(191)
Water Connections
5/8” (15.9 mm)
OD Copper,
*1.94
(49)
Blower Access Panel
1/2” FPT or
3.56
(90)
*7.06
(179)
1/2” MPT
4.49
(114)
(293)
11.54
0.75
(19)
3.22
(82)
Optional
Condensate
Disconnect Box
(mounted to cabinet
not chassis)
3.88
(99)
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.
32
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Guide specifications
5. Optional mute package shall consist of addi-
tional sound attenuating materials strategically
applied to the compressor compartment, and
Console Water Source Heat Pumps
HVAC Guide Specifications
1
Size Range: 7,800 to 16,000 Btuh
substitution of /2 in. noise dampening insula-
1
Cooling Capacity
tion for all surfaces that normally have /4 in.
10,400 to 19,300 Btuh
insulation.
Heating Capacity
C. Fan and Motor Assembly:
Carrier Model Number: 50KQL
Part 1 — General
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.
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.
D. Refrigerant Components:
1. Units shall have a sealed refrigerant circuit includ-
ing a hermetic compressor, a refrigerant meter-
ing device, a finned tube refrigerant-to-air heat
exchanger, a reversing valve, a coaxial (tube-in-
tube) 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 (freeze-
stat) sensor.
2. Rotary compressors shall have thermal over-
load 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 vibra-
tion transmission.
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 accept-
able. Standard operating range is 60 to 95 F enter-
ing water temperature.
3. Refrigerant-to-air heat exchangers shall utilize
enhanced aluminum fins and rifled copper tube
construction rated to withstand 425 psig refrig-
erant working pressure.
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 refrig-
erant-to-water heat exchanger, air-to-refrigerant heat
exchanger, 4-way reversing valve, fan motor assem-
bly, compressor, TXV metering device, and all inter-
nal controls and safety devices.
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 solenoid-
activated 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.
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 dis-
charge 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.
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.
4. The cabinet shall be powder painted.
33
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Guide specifications (cont)
2. Piping:
r. The control box components shall be
easily accessible with a swing out control
compartment.
5
a. Copper tubes with a /8-in. OD dimension
shall be provided on the supply and return
water connections for the purpose of
forming a sweat connection to field-supplied
distribution piping.
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.
b. Optional threaded connections: A 1/2-in.
male or female pipe threaded fitting shall be
factory mounted on the supply and return
water connections.
3. Unit Controls:
5. The optional Deluxe D electronic control shall
have all the features of the Complete C control,
with the following additional features:
Safety devices on all units shall include low-
pressure sensor or loss-of-charge switch, high-
pressure switch, low water temperature sensor,
and condensate overflow switch.
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.
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.
g. Ability to work with heat/cool (Y, W)
thermostats.
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.
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.
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.
o. Intelligent fan speed selection based upon
thermostat demand and/or dehumidistat
signal.
6. Carrier PremierLink™ Controller:
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.
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 CO2 sensor in the conditioned space
and be Demand Control Ventilation (DCV)
ready. The communication rate must be 38.4K
or faster.
34
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7. Optional Controls:
G. Special Features:
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 con-
trol 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.
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.
d. Programmable 5-Day Thermostat offers
2-stage heat, 2-stage cool, auto changeover,
5-minute built-in compressor protection, lock-
ing cover included.
e. Non-programmable Thermostat with 2 heat
stages, 2 cool stages, auto changeover,
5-minute built-in compressor protection, lock-
ing cover included.
2. Aquazone System Control Panel:
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.
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:
e. Night low limit thermostats shall include a
unit-mounted thermostat sensing space tem-
perature. Should the space temperature fall
below the limit, the night low limit thermo-
stat shall start the fan and compressor oper-
ation 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.
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.
F. Electrical Requirements:
6. Solenoid Valves (Brass Body):
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 time-
delay fuses or HACR circuit breakers.
3. Unit controls shall be 24-volt and provide heating
or cooling as required by the remote thermostat.
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 mea-
sure 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
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Guide specifications (cont)
9. PremierLink™ accessories:
supply air temperature sensors, communicat-
ing room sensors, CO2 sensors, and linkage
thermostats.
PremierLink accessories shall provide a fully
integrated DDC system. Accessories include
Carrier Corporation • Syracuse, New York 13221
3-04
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
New
Pg 36
Catalog No. 525-00060
Printed in U.S.A.
Form 50KQL-1PD
Replaces: 50KQ-6PD
Book 1
Tab 5a 5a
Tab 1IP4a
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