50RLP
Aquazone™ System Control Panel
Water Source Heat Pump Units
Installation Instructions
50RLP
CONTENTS
SAFETY CONSIDERATIONS
GENERAL
Aquazone System Control Panel Functionality
Stand-Alone Systems
CCN Systems Using PremierLink™ Controls
COMPONENTS
Aquazone System Control Panel Hardware
Water Source Heat Pumps with
PremierLink Controller Hardware
Field-Supplied Hardware
for Stand-Alone Systems
Field-Supplied Hardware for CCN Applications
INSTALLATION
Inspection
Mounting Location
Mounting
Wiring
Install Thermostat, Sensors and Switches
Install Loop Water Supply and Return
Temperature Sensors
Install Loop Water Pressure Sensor
Install Loop Water Flow Switch
Connect to CCN Communication Bus
START-UP
LID Power Up Display
Log On to the LID Display
Change the Default Password
Set the Clock
Configure Schedules
Program Set Points
Check System Parameters
Display Alarm History
Configure the Custom Programming Selections
Set the Aquazone System Control Panel
Controller Address
Log Off from Controller
LID Operation
Sequence of Operation
• HEAT REJECTION
• H EAT ADDITION
• WATER CIRCULATION
CONFIGURATION
Hardware Points
Software Points
Loop Supply Water Set Point
System Pressure Set Point
Global Dictionary
Heat Pump Default Configuration
Cool Source Default Configuration
Heat Source Default Configuration
Occupancy Configuration Screen
Network Time Schedule
Holiday Schedules
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IMPORTANT: Read the ent ire instruction manual before
starting installation.
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Page
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance
functions. All other operations should be performed by trained
service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels
attached to the unit, and other safety precautions that may
apply.
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or
accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult
local building codes and the National El ectrical Code (NEC)
for special installation requirements.
Understand the signal words — DANGER, WARNING,
and CAUTION. DANGER identifies the most serious
hazards which will result in severe personal injury or death.
WARNING signifies hazards that could result in personal
injury or death. CAUTION is used to identify unsafe practices,
which would result in minor personal injury or product and
property damage.
Recognize safety information. This is the safety-alert
symbol ( ). When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Electrical shock can cause personal injury or death. Before
installing or servicing system, always turn off main power
to system. There may be more than one disconnect switch.
Turn off accessory heater power if applicable.
GENERAL
IMPORTANT: The installation of water source heat pump
units and all associated components, parts, and accessories
which make up the installation shall be in accordance with
the regulations of ALL authorities having jurisdiction and
MUST conform to all applicable codes. It is the responsibility of the installing contractor to determine and comply
with ALL applicable codes and regulations.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Ta b 5 a 5 a
PC 111 Catalog No. 535-00077 Printed in U.S.A. Form 50RLP-1SI Pg 1 1-03 Replaces: New
The Aquazone™ System Control Panel is a single packaged
system control panel for use with Aquazone water source heat
pumps (WSHPs) in stand-alone or direct digital control
applications using the Carrier Comfort Network (CCN). The
Aquazone system control panel controls and monitors the
operation of the water source heat pumps, the ancillary heat
rejection, the heat addition, and the system pumps to coordinate entire system operation. The Aquazone System Control
Panel is used with the following units: 50HQL, KQA, KQD,
RDS, RHC, RHR, RHS, RTG, RVC, RVR, RVS, RWS,
VQA, VQD.
The Aquazone system control panel includes a preprogrammed 6400 main logic comfort controller as the central
processing unit. The Aquazone system control panel is compatible for use in boiler/tower (water loop) or geothermal (ground
loop, ground water) water source heat pump arrangements.
Other system hardware components are specified in the
50RLP model nomenclature. Components can be added to customize the Aquazone System Control Panel for the specific
type of functionality desired, including staged heat rejection
and addition, dual or variable speed pump operation, and standalone or CCN installations. See Fig. 1.
Aquazone System Control Panel Functionality —
Functionality includes the ability to control up to two
water-circulating pumps and monitor water temperature to
initiate up to eight stages of cooling tower and/or boiler operation. The system control panel has the capability to work with
variable speed pumping arrangements for maximum energy
efficiency. In addition, the panel provides system control for
both stand-alone and DDC water source heat pump systems
(units installed with a factory-mounted PremierLink™ CCN
controller).
Stand-Alone Systems —
trol strategy, non-communicating Aquazone water source heat
pump thermostats are utilized to initiate the operation of
individual water source heat pump equipment for eac h zone.
The Aquazone System Control Panel can be ordered with the
appropriate hardware to accommodate and initiate scheduled
control of either 10 or 18 zones of WSHP units in stand-alone
operation. See Fig. 2.
In a stand-alone type of con-
CCN Systems Using PremierLink Controls —
To
implement a direct digital control type of water source heat
pump system strategy , individual WSHP units are ordered with
a factory-installed PremierLink controller. The Aquazone system control panel has been pre-programmed to w ork specifically with th e Pr e m ie r L in k co ntroller to trans f er a n d c o ntrol all
modes of cooling/heating operation, transmit unit number,
zone temperature, zone temperature set points, discharge air
temperature, fan status, stages of heating, stages of cooling,
leaving water temperature, and alarm status information. See
Fig. 3.
COMPONENTS
Aquazone System Control Panel Hardware —
The 50RLP Aquazone System Control Panel package consists
of the following hardware. See Fig. 4.
ENCL OS U RE — The Aquazone system control panel enclosure is constructed of perforated 16-gage steel and finished in a
gray powder-coated finish. The panel has a height of 42 in., a
width of 30 in. and a depth of 7 inches.
PROC ESSO R — The central processing units for the Aquazone system control panel are Carrier 6400 Comfort Controllers. The Comfort Controller provides general purpose HVAC
control and monitoring capability in a stand-alone or network
environment using closed-loop, direct digital control. The 6400
Comfort Controller has been pre-programmed to work in either
stand-alone or CCN water source heat pump system installations. Specifications for the 6400 Comfort Controller may be
found in the Comfort Controller literature.
PUMP CON TROL RELAYS — For both stand-alone and
CCN systems (based on the type of pumping operation
required) the Aquazone system control panel can be orde red
with a combination of multi-voltage control relays to provide
start/stop or lead/lag operation for single or dual pumps. The
combination desired is specified in the 50RLP model nomenclature in digit 8. See Fig. 1.
50RLP 0 0 0 0
Unit
50RLP – Aquazone System Control Panel
System Heat Rejection
0 – 2-Stage Card (2 Stages of Cooling Tower Operation)
1 – 4-Stage Card (4 Stages of Cooling Tower Operation)
2 – 2- and 4-Stage Cards (6 Stages of Cooling Tower Operation)
3 – Two 4-Stage Cards (8 Stages of Cooling Tower Operation)
4 – No Card, Variable Speed Cooling Tower Operation
*Option is utilized with Aquazone Thermostat for each WSHP unit.
†Option is utilized with PremierLink DDC control option on individual WSHP units.
**Accepts signals from a variable frequency device.
Fig. 1 — Model Number Nomenclature
WSHP Zone Operation
0 – 10 Relays, Control 10 Zones for Stand-Alone WSHP Units*
1 – 18 Relays, Control 18 Zones for Stand-Alone WSHP Units*
2 – No Relays, Carrier Comfort Network (CCN) System†
System Pumping Operation
0 – Both Relays, Start/Stop or Lead/Lag Operation for Single or
Dual Pumps
1 – No Relays, Variable Frequency Pump Operation**
System Heat Addition
0 – 2-Stage Card (2 Stages of Boiler Operation)
1 – 4-Stage Card (4 Stages of Boiler Operation)
2 – 2 and 4-Stage Cards (6 Stages of Boiler Operation)
3 – Two 4-Stage Cards (8 Stages of Boiler Operation)
4 – No Card, Modulating Valve Operation for Steam or
Hot Water
2
COOLING
TOWER
BOILER
EXPANSION
TANK
AIR SEPARATOR
PUMP
WSHP
FLOW
SENSOR
TEMP.
SENSOR
T-S TAT
AQUAZONE
SYSTEM
CONTROL
PANEL
LEGEND
Control Wiring
Loop Water Piping
Fig. 2 — Typical Stand-Alone WSHP System
If variable frequency drives are utilized for system pumps,
no pump control relays are specified. Each relay contains a red
light-emitting diode (LED), which indicates the relay coil is
energized. The pump control relays are located in the upper left
hand corner of the system control panel. See Fig. 4. Wiring is
shown in Fig. 5A-5C. Specifications for the pump control
relays are as follows:
Voltage Input: 24 vdc @ 15 mA, 14 vac @ 30 mA,
115 vac @ 20 mA, 230 vac
@ 20 mA.
Contact Rating: 10 A res. @ 115 vac,
7 A res. @ 230 vac/28 vdc,
1
N.O.:
/6 hp @ 115 vac.
T emperature Range: –60 F to 185 F
Indication: LED
Enclosure: 18 ga. metal back
Dimensions: 5.125-in. x 3.125-in. x 2.5-in.
(HxWxD) or 5.125-in. x 9.5-in. x
2.5-in. (HxWxD)
OUTPUT TRANSDUCERS — For both stand-alone and
CCN systems (based on the stages of heat addition or rejection
required) the Aquazone™ system control panel can be ordered
with a combination of 2-stage and 4-stage output transducers to
provide 2, 4, 6, or 8 stages. The combination desired i s specified in the 50RLP model nomenclature in digit 6 to specify heat
rejection stages and digit 7 to specify heat addition stages. See
Fig. 1. If variable speed cooling tower fan operation and/or
WSHP
T-S TAT
WSHP
T-S TAT
WSHP
T-S TAT
modulating valve operation for steam or water a re utilized, no
output transducer card is specified. The output transducer is a
solid-state multi-stage device used for staging control from a
single analog signal. Output transducers are located in the
upper left hand corner of the Aquazone System Control Panel
underneath the pump control relays. See Fig. 4. Specificat ions
for the pump control relays are as follows:
Supply Voltage: 24 vac ± 10% @ 100 mA,
24 vdc ± 10% @ 50 mA
Input Signal: 4-20 mA
Output: 2 SPDT relays for 2-stage,
4 SPDT relays for 4-stage.
Relay rating: 5A @ 120 vac
Accuracy & repeatability: ± 1%
Set point adjustment: 25-turn potentiometers
Input impedance: 250 W (mA input), 10 kW
(V input)
T emperature Range: 32 F to 158 F
Humidity Limit: 5 to 95% relative humidity
non-condensing
Dimensions: 3.25-in. x 3.5-in. x 1.375-in.
(HxWxD) for 2-stage, 3.25-in. x
5.5-in. x 1.375-in. (HxWxD)
for 4-stage
Relay Differential: 0.5 mA or 0.375 V.
3
ZONE 2
ZONE 1
ROOM SENSOR
S
S
WSHP 2
WSHP 1
PREMIERLINK
WSHP CONTROLLER
PREMIERLINK
WSHP CONTROLLER
FAN(S)
SPRAY PUMP
STAGE 2
STAGE 1
MAIN
STANDBY
LOOP TEMP
VENTILATION
FAN
COMPUTER
COMPUTER
–PC ACCESS
LOCAL
REMOTE
TOWER
BOILER
PUMPS
LT
TELEPHONE
LINE
AQUAZONE SYSTEM
LCP
LOOP CONTROL PANEL
(CARRIER COMFORT
CONTROLLER)
CARRIER COMFORT NETWORK BLDG.
MASTER CONTROL PANEL
MCP
R
T
M
(CARRIER COMFORT
CONTROLLER)
REPEATER: INTERFACE
PC TO NETWORK
TELINK WITH
MODEM CONTROLLER
DATA COLLECTION
LOADSHED
COMFORT CONTROLLER
TENANT BILLING
LIGHTS
EQUIPMENT
D.C.
L
E
L.S.
CC6400
T.B.
BLDG./SYST. MANAGEMENT
Fig. 3 — CCN Water Source Heat Pump System with PremierLink™ Controllers
4
g
g
g
g
y
FLT SEQ
FLT SEQ
MODE
A
MODE
A
FLT SEQ
A
A
MODE
A
FLT SEQ
A
MODE
A
A
HOA
Pump 1
Pump 2
B
C
B
Cool Sta
B
C
B
Cool Stages 2
B
C
B
Heat Sta
B
C
B
Heat Sta
Processor Input/Output 1 Input/Output 2
Low Volta
e
Zone Thermostat
Control Rela
UCS-421
MODE
INPUT
FLT SEQ
TYPE
H3
MODE
D
UCS-421
D
UCS-421
D
CH
V
H4
H5
MA
24V
INPUT
CHAIN
SIGNAL
POWER
OUTPUT
COMMON
INPUT
TYPE
H3
CH
V
H4
H5
MA
24V
INPUT
CHAIN
SIGNAL
POWER
OUTPUT
COMMON
INPUT
TYPE
H3
CH
V
H4
H5
MA
24V
INPUT
CHAIN
SIGNAL
POWER
OUTPUT
COMMON
D
C
es 1
MODE
FLT SEQ
D
C
FLT SEQ
D
C
s
es 1
UCS-421
MODE
INPUT
FLT SEQ
TYPE
H3
D
C
CH
V
H4
H5
MA
24V
INPUT
CHAIN
D
SIGNAL
POWER
OUTPUT
COMMON
es 2
POWER SWITCH
CONVENIENCE
OUTLET
PANDUCT®
WIRING DUCT
Transformer 1 Transformer 2
CONDUIT
Fig. 4 — Aquazone™ System Control Panel
Trans former 3
5
COMPLETE C CONTROL
(IN WSHP)
RYW OGC
SYSTEM
ZONE
RELAYS
(1-18)
NO
R
W1
G
THERMOSTAT
Y1
W2
Fig. 5A — System Zone Relay Wiring
(Aquazone™ System Control Panel Used to
Control a Single Thermostat)
PANEL 24 VAC POWER
Y2
X1
H
FIRE
FREEZE,
ETC.
SWITCH S-1
C
Fig. 5C — Control Relay Wiring for Pump
Start/Stop or Cooling Tower Fan
O
A
TP WIRES
L
(+)
(-)
TO COMFORT
CONTROLLER
STARTER
COIL
M
CONTROL RELAY
OR
STAGING CARD
OL’
X2
s
N
TO OTHER WSHP COMPLETE C CONTROLS AND THERMOSTATS
H
SYSTEM ZONE
RELAYS
(1-18)
Fig. 5B — System Zone Relay Wiring
(Aquazone System Control Panel Used to Control Multiple Thermostats)
COMPLETE C CONTROL
RYW OGC
TYPICAL
FIELD-INSTALLED
RELAYS
(ONE PER WSHP)
(IN WSHP)
G
R
W1
THERMOSTAT
Y1
W2
Y2
C
ZONE THERMOSTAT CONTROL RELAYS — A unique
feature of the Aquazone system control panel is the capability to
add zone ther mostat contr ol rela ys. T his feat ure is used w hen th e
Aquazone system control panel i s utilized in a st and-alone type
of installation. Eithe r a set of 10 or 18 relays can be selected
from the 50RLP model nomenclat ure in digi t 9 to control ei the r
10 or 18 zones, respectively. If selected in the model nomencl ature, zone control relays are located on the right hand side of the
system control panel. See Fig. 4. See Fig. 5A-5C for wiring.
CONTROL TRANSFORMERS — Control transformers are
supplied with the Aquazone system control panel and are wired
to the power switch and convenience outlet. The control
transformers provide power to the nominal 24 VAC circuit in
Aquazone system control panel. The contractor will supply the
primary power to the power switch and conve nience outlet in
the field. Transformers include a manual reset button for resetting the circuit breaker. Control transformers are located on the
bottom half of the system control panel. Specifications for the
control transformers are as follows:
Primary: 120/208/240 vac
Secondary: 24 vac
Frequency: 60 Hz
MOUNTING RAILS AND WIRING DUCT — All exposed
panel wiring is low voltage. Line voltage wiring to the control
transformers, control circuits for pumps, cooling tower fans,
and boilers is factory-installed in conduit, using wiring duct,
and on mounting rails.
6
POWER RECEPTACLE — A power receptacle is provided
in the Aquazone™ system control panel and is located in the
bottom left corner. Specifications for the power receptacle are
as follows:
Power: 120 vac
Rating: 15A @ 120 vac for receptacles
15A @ 120 vac for switch
250 V for fuse
WATER TEMPERATURE SENSORS — Two water temperature sensors and thermowells have been provided with the
Aquazone system control panel. The first sensor is utilized to
read loop supply water temperature, such that the system
control panel can adjust heat rejection and heat addition
equipment to maintain the loop temperature based on user
input. The second sensor may be installed to monitor return
loop water temperature. The active sensing element is a highly
stable precision thermistor material accurate to within ± 0.36 F.
The temperature range of the sensor is 10 F to 230 F.
WATER PRESSURE SENSOR — A water pressure sensor is
provided with the Aquazone system control panel with variable
speed pumping only , and is utilized to operate variable frequency drives for system pumps. The water sensor senses system
pressure and the pressure is sent to the system control panel.
The Aquazone system control panel speeds up or slows down
the variable frequency drive to control the pump in order to
keep the system at the correct pressure.
When a variable frequency drive is used for system pumping, the Aquazone water source heat pumps are typically
furnished with a factory or field-mounted solenoid valve that
allows water to flow though the heat pump. When solenoid
valves open, the system pressure drops, which results in the
variable frequency drive speeding up to allow the pump to
provide more water. When solenoid valves close, the system
pressure rises, which results in the variable frequency drive
slowing down to allow the pump to provide less water.
WATER FLOW SWITCH — A factory-provided wat er flow
switch is included with the Aquazone system control panel and
must be field-installed in the water loop piping. The flow
switch is connected to the control panel by a cable with a
watertight connector. This device uses a triac output that cannot
be connected directly to the Main Base Board. Therefore, a
control relay is used to signal the Main Base Board that loop
water flow is detected. The switch contains a fifteen-turn
adjustment potentiometer, to be used to adjust the set point in a
range of 3 to 60 cm/sec. The factory set point is 20 cm/sec.
The potentiometer switch may be adjusted down to zero
velocity (no flow) or above 60 cm/sec, however operation
in those ranges may not be linear or reliable.
Water Source Heat Pumps with PremierLink™
Controller Hardware —
tion is implemented, a factory-mounted PremierLink controller
is provided with the water source heat pump units. The package
from the factory includes the PremierLink controller, supply air
temperature sensor , and leavi ng water t emperatur e sensor.
PREMIERLIN K CONTROLLER — PremierLink controllers
can be provided with any Aquazone water source heat pump
product by selecting this option in the model nomenclature.
See Fig. 6.
The PremierLink controller is provided with the Complete C
unit controller . F actory sup plied wiring is i llustrated in F ig. 7.
When a CCN system installa-
Fig. 6 — PremierLink™ Control Module
7
Carrier’s diagnostic standard tier display tools such as
Navigator™ or Scrolling Marquee can be used with the
PremierLink™ controller. Access is available via an RJ-11
connection or a 3-wire connection to the communication bus.
Computers equipped with Carrier user interface software such
as Service Tool, ComfortVIEW™, or ComfortWORKS®
software are used to int erface with the system. W hen used as
part of the CCN, other devices such as the CCN data transfer,
Linkage Thermostat, or system control panel comfort
controller can read data from or write data to the PremierLink
Controller.
SUPPLY AIR TEMP ERATURE SENSOR — A factoryinstalled supply air temperature sensor is provided with the
PremierLink controller. Wiring of the temperature sensor is
shown in Fig. 7. The sensor is a 10 kohm thermistor, which is
protected by a stainless steel housing probe. Probe is
1
/4-inch in
diameter and 1.5-in. long. Wire is 22 AWG (American Wire
Gage), 7/30 copper wire, PVC white, 2 conductor type.
LEAVING WATER TEMPERATURE SENSOR — A factoryinstalled leaving water temperature sensor is provided with
PremierLink controller. Wiring of the temperature sensor is
shown in Fig. 7. The sensor is a 10 kohm thermistor is protected by a stainless steel housing probe. Probe is
1
/4-inch. in diameter and 1.5-in. long. Wire is 22 AWG , 7/30 copper wi re, PVC
white, 2 conductor type.
Field-Supplied Hardware for Stand-Alone Systems —
stand-alone configuration, individual Aquazone thermostats
(or compatible equivalent) are required for water source heat
pump units.
AQUAZONE THERMOSTAT — A field-supplied Carrier
thermostat is required to maintain space temperature for standalone water source heat pump installations. There are five
different Aquazone thermostats available for stand-alone applications. See Table 1.
T o utilize the Aquazone™ system control panel in a
LEGEND
CR —
LW T —
SAT —
SPT —
NOTE: Reversing valve is on in Cooling
mode.
Control Relay
Leaving Water Temperature Sensor
Supply Air Temperature Sensor
Space Temperature Sensor
J6
S
P
T
J5
L
S
A
W
T
T
PREMIER
LINK
J8
PWR
J1
CMPSAFE
PWR
HS1/EXH/RVS
CMP1
FAN
J4
CR
CR
COMPLETE
C
CONTROL
Y
W
O
G
R
C
AL1
AL2
A
Fig. 7 — PremierLink Controller Applications with Complete C Control
8
Table 1 — Aquazone™ Thermostats
ORDERING
NUMBER
50QE900-220WS
50QE900-220LA
50QE900-NPWS
50QE900-511WS
50QE900-250FS
THERMOSTAT TYPE FUNCTIONS
Aquazone 7-Day Programmable 2 stages heating, 2 stages cooling, auto changeover
Fahrenheit and Celsius temperature scales
Carrier
AUTO
®
Pm
COOL
HEAT
4 settings per day
24 vac
Backlit LCD
Keypad
5-minute compressor protection
NEVERLOST™ memory
3 security levels
Aquazone Light Activated, 7-Day Programmable
2 stages heating, 2 stages cooling, auto changeover
4 settings per day
Carrier
AUTO
®
Pm
COOL
HEAT
24 vac
Keypad lockout
5-minute compressor protection
Occupied with lights on, unoccupied with lights off
NEVERLOST memory
3 security levels
Aquazone Non-programmable 2 stages heating, 2 stages cooling, auto changeover
5-minute built-in compressor protection
R
Locking cover included
Fahrenheit and Celsius temperature scales
AUTO
COOL
HEAT
Large display
Keypad lockout
Backlit display or B terminal
NEVERLOST memory
Dual set point with adjustable deadband
Back plate with terminals
Aquazone 5-1-1 day programmable 2 stages heating, 2 stages cooling, auto changeover
5-minute built-in compressor protection
R
Keypad lockout and locking cover included
Fahrenheit and Celsius temperature scales
AUTO
COOL
HEAT
4 settings per day
Backlit and configurable display
O or B terminal
NEVERLOST memory
Dual set point with adjustable deadband
Self prompting program
Aquazone Flush Mount, 7-Day Programmable 2 stages heating, 2 stages cooling, auto changeover
4 settings per day, Holiday/vacation programming
Self prompting program with copy command locking
cover plate with tamperproof screws
Fahrenheit and Celsius temperature scales
Set point limiting
Mounts flush to the wall
NEVERLOST memory
Dual set point with adjustable deadband and B terminal
Remote sensor capability (sold separately): Wireless,
(33CSRFS-RC transmitter and 33CSRFS-RE receiver),
wired with override (33CSCEN-WB), duct mounted (33CSSEN-DS)
Field-Supplied Hardware For CCN Applications —
the water source heat pump unit is configurable with a variety
of Carrier space temperature sensors.
SP A CE TEMPERATURE SENSOR (SPT) — A field-supplied
Carrier space temperature sensor i s required to mai ntain spac e
temperature in sensor mode. There are three sensors ava ilable
for this application: the 33ZCT55SPT Space Temperature
Sensor with Override Button, the 33ZCT56SPT Space
Temperature Sensor with Override Button and Set Point
Adjustment, and the 33ZCT58SPT T58 Communicating Room
The factory-installed PremierLink™ controller for
Sensor with Override Button, Set Point Adjustment, and
Manual fan control.
INDOOR AIR QUALITY CO
quality sensor is required for CO
SENSOR — An indoor air
2
level monitoring. Three
2
different CO2 sensors are available for this application: the
33ZCSENCO2 sensor is an indoor, wall-mounted sensor with
an LED display, the 33ZCT55CO2 sensor is an indoor,
wall-mounted sensor without display (also includes a space
temperature sensor with override button), the 33ZCT56CO2
sensor is an indoor, wall-mounted sensor without display (also
includes a space temperature sensor with override button and
temperature offset).
9
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