Carrier 39CQ Manual

20

Contents
ĉSafety Notice…………………………………………………………………………………………… 1
ĊIntroduction of Control System for Air Handling Units ……………………………………………… 2
1. General introduction ……………………………………………………………………………… 2
2. AHU operation mode ……………………………………………………………………………… 2
ċIntroduction of Control components…………………………………………………………………… 3
1. Control board: SE-serial single digital controller ………………………………………………… 3
2. Extension board …………………………………………………………………………………… 4
3. Sensors……………………………………………………………………………………………… 5
(1) Duct temperature and humidity sensor ………………………………………………………… 5
(2) Indoor temperature and humidity sensor ……………………………………………………… 7
(3) CO2 sensor …………………………………………………………………………………… 9
(4) Water valve and damper actuator…………………………………………………………… 11
ČHuman-computer Interface of AHU control system…………………………………………………… 12
1. Feature …………………………………………………………………………………………… 12
2. Instructions to use HMI …………………………………………………………………………… 12
čFailure diagnosis andsolution ………………………………………………………………………… 16
Appendix: Wiring Diagram ……………………………………………………………………………… 17

1
ĉ
Safety Notice
When operated under the design specification, 39CQ Air-conditioning Unit can provide safe
and reliable service. Only qualified installation personnel and maintainers can install, operate
and maintain this unit due to the reasons in aspects such as working pressure, electrical motor
connection and devices etc. When operating this unit, comply with all safety measures on the
tag attached on the unit, the safety instruction in the instructions and any other applicable
safety prevention measures.
xComply with all the safety specifications
xBe careful when handling, assembling and fixing the unit. Check the weight of the unit or
related objects to be handled, in the meantime, pay attention to the special instructions on the
objects to ensure safety handling.
xDo not enter the unit when the fan is running. Before maintaining, switch off the unit and
make marks.
xBefore enter the unit, switch off the power of the motor, take off fuse and hang the tag
“Servicing, do not switch on” on the electric power board.
IMPORTANT:
1. Thank you for purchasing Carrier products. Please read the instructions carefully before
using the products. When you use the products, Carrier considers you have carefully read
the instructions.
2. We will make renovation continuously to make the products better fit the clients. We
reserve the right to change the data without notice.

2
Ċ
Introduction of Control System for Air Handling Units
As one of the top class manufacturers in air conditioning field, Carrier provides an integrative AHU
control system to meet with comfort demands of customers as well as to be optimized for different
application requirements.
1. General introduction
The integrative control solution with variable-frequency drive covers the common demands of AHU
control functions. The human-computer interface (HMI) with graphical display is inserted into control box
panel for easy operation. Factory-mounted integrated control components help to save installation time and
maintenance cost, as well as to ensure optimal operation of AHUs.
¾The system has accurate control on fan speed, water valve opening and damper opening, by its
internal PID calculation on the change of setting temperature and indoor load.
¾The system has control on timing on/off of AHUs by HMI, which is convenient for routine
maintenance.
¾The system has flexible operating mode for customer choice, both remote and local mode
available for different application.
¾The system has continuous monitoring on electric loop and equips with quick-checking function,
which is used to test the AHU input and output.
¾Field controller controls on supply fan on/off and collect signs of on/off status, fault alarm and
operating mode etc.
¾Field controller can automaticly turn on/turn off AHUs by working/holiday logic or accident logic.
¾Field controllers record AHUs accumulated operating time and shows maintenance reminding
notes if the time gets to limitation.
¾HMI shows fault alarming once there is fault for AHUs operation.
¾Interlocking control on cold/hot water electric two-way valve, fresh air damper and supply fan,
which means the valve and damper will close automaticly once supply fan turns off.
¾Optional CO2 detector helps to control the opening of fresh air damper by monitoring room CO2
concentration.
2. AHU operation mode
Three operating modes are available for AHU equipped with control system,
2.1 Remote Mode: The unit will be controlled by remote control contact (passive contact) when
setting remote button at Remote Mode.
2.2 Local Mode: The unit can run at either automatic mode or manual mode, which is controlled by
HMI.
1εAutomatic Mode : When setting remote button at automatic mode, the unit will be controlled
automatically by touch screem.
2εManual Mode: When setting remote button to Local Mode, customer can start the fan in case of
control system failure. In Manual Mode, customer can only adjust air volume but can’t have demand of
indoor temperature change.

3
ċ
Introduction of Control components
1. Control board: SE-serial single digital controller
SE6166
SE-serial controllers provide a complete solution for single unit control application.It can be widely
used in common environments including roof, machine room, control panel and other special places. It can
fully support EIKON®-LogicBuilder, and be flexible to support BACnet protocol communication based
on ARCNET 156 Kbps or BACnet MS/TP.
Main features
¾Support BACnet protocol communication based on ARCNET 156 Kbps or BACnet MS/TP
¾Control accuracy increase due to 12bit A/D resolution for all inputs, some inputs support a pluse
of 40Hz
¾High speed microprocessors with 1 mbyte flash memory for control program storage, supporting
for upgrade through remote network
¾Real-time clock function for power loss protection, which enables unit independent operation even
in case of network interruption
¾Removable terminal for easy installation and maintenance
¾Support graphic oriented programming and also provide peer-to-peer communication with other
ME-serial or ZN-serial controller
Technical specifications
BACnet Port Comply with BACnet Advanced Application Controller (B-AAC) defined by
appendix L of 135-2004δBACnetε, ANSI-ASHRAE Standard
Local access port EIA-485 supports BACnet access of ARCNET 156 Kbps or BACnet MS/TP (9600
baud to 76.8 Kbps).Rnet port is used for job-site local access
Digital output 24VAC 3A relay, manual-shut off-auto switch, with LED indicator
Inputs 0-5 VDC, 0-10 VDC, 0-20 mA, thermistor (10k Ohm typeĊ), 1k Ohm RTD
(Platinum, nickel, Balco), dry contact
Input resolution 12 bit A/D
Impulse input Input point 1 and point 2 support for 40 Hz (minimum impluse width as 12.5ms)
Analog output 0-10VDC, 0-20mA, with LED indicator
Output reolution 8 bit D/A
Microprocessor High-speed 16 bit microprocessor with ARCNET communication coprocessor
Memory 1MB flash memory, 1MB power-loss protection memory, 16 bit memory bus (service
life of battery is 10 years ,which offers 10,000 hours power-loss protection )

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Real-time clock Real independent operation dut to real-time clock with power-loss protection
Status indicators LED indicators to show status of EIA-485 communication, operation, failure, power
and digital outputs
Address toggle switch for direct shown of internet address
Circuit protection built-in transient circuit protection to protect power supply and communication
Certifiction UL916 (Canadian Standard C22.2 No. 205-M1983), CE, FCC Part 15 - Subpart B -
Class A.
Operating
environment -29ºC ~ 60ºC, relative humidity of 10% ~ 90%, non-condensing, indoor installation
Power Supply 24 VAC ± 10%, 50 ~ 60Hz
Overall Dimension 211mmδwidthε×178mmδheightε×38mmδdepthε
Mounting hole
location 199mmδwidthε×127mmδheightε
2. Extension board
IM041 input and conversion control module is mainly applied to intelligent building automation field.
It converts four-way on-off outputs to a group resistance output, and get function extension cooperating
with specified thermistor input port (NTC,10K ) of DDC controllor.The extension helps to reduce
hardware cost for building automation system.
Technical specifications
Power supply 24VAC
Input 4DI dry contact
Output 1AO thermistor (10k Ohm typeĊ)
Operating environment -20Њ50ćθ10Њ95%RH, non-condensing, internal installation
Indicators The red indicator lights when the power on.
The green indicator turns light when input contact is closed .
Dimesion 108mm x 62mm x 27mm
Installation hole 99mm x 42mm

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3. Sensors
(1) Duct temperature and humidity sensor SDB-TN10-20
Main features
¾Duct temperature and humidity measurement
¾Wide signal range of 0…10V, 0…20mA or 2…10V, 4…20mA by use of short cuts
Technical specifications
Power supply operating voltage 24 VAC 50/60 Hz ± 10%, 24VDC ±
10%
power dissipation Max 2 VA
Connection wiring terminals 0.34…2.5 mm2(AWG 24…12)
Sensing element humidity sensor
scope
measurement accuracy
hysteresis
repeatability
stability
Capacitor resin polymer
0…100 % RH
20%...80% ±3%
r1%
r0.1%
< 0.5% /year
Temperature
accuracy
-40…0°Cδ-40…32°F):
0…50°C (32…122°F):
50…70°C (122…158°F):
0.5 K
0.2 K
0.5 K
Signal output signal output
resolution ratio
maximum load
DC 0-10V or 0…20mA
10 Bit, 9.7 mV, 0.019.5 mA
20 mA, 5009
Enviroment temperature
humidity 0…70°C (32…158°F) <95% RH. non-condensing
temperature
humidity -40…80°C (-40…176°F) <95% RH. non-condensing
Housing Materials cover fire proof ABS plastic
Dimensions
(H x W x D) 68 x 91 x 47 mm (2.7 x 3.7 x 1.9 in) dimensions (H x W x D)
Weight
(including package) 220 g (7.8 oz) weight (including package)

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Dimension diagram mm (inch)
Installation
The product is composed of two parts: (a) probe and (b) upper shell. It shall be installed at position with
smooth air circulation. Position with 2-3 meters distance from fan or cooling coil is recommended to
achieve accurate measurement.
1. Punching hole on duct with diameter of 16mm (5/8”), use two tapping screws to fix the shell tightly on
duct with a diagonal distance of 92mm (3.6”).
2. Open the shell
3. Connecting signals in line with electrical diagrams.
4. Insert the probe in, use two tapping screws to fix the shell tightly on duct
5. Install the shell
6. Fix the screws
7. Screw driver #2, suggest using AMC-2 for cable protection
Wiring diagram
1: G power supply, 0VAC, +24VDC
2: G0 power supply, 24VAC, -24VDC
3: U1 JP1 = 1-2, humidity output voltage 0…10V or 210V (JP3)
3: I1 JP1 = 2-3, humidity output voltage 0…20mA or 4 20mA (JP3)
4: B1 Resistance temperature signal
5: M1 Resistance temperature signal
Output signal setting
By use of short cuts, output signal can change
in the range of 0…10V, 0…20mA or 2…10V,
4…20mA.
0-10 V is defined as factory settings, and
please change to 4…20mA before usage.
Below picture shows the position of short
cuts.
׎
1
4x
7
7
/
1
57
(׎.55 x 3 / 6.2)
91 (3.6)
68
Ц
2.7
Ч
47 (1.9)

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(2) Indoor temperature and humidity sensor SRA-H1TN10
Main features
¾Indoor temperature and humidity measurement
¾Wide signal range of 0…10V, 0…20mA or 2…10V, 4…20mA by use of short cuts

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Technical specifications
Power supply operating voltage 24V AC 50/60 Hz ± 10%, 24V DC ± 10%
power dissipation Max 2 VA
Connection wiring terminal 0.34…2.5 mm2(AWG 24…12)
Sensing element humidity sensor
scope
measurement accuracy
hysteresis
repeatability
stability
Capacitor resin polymer
0…100 % RH
20%...80% ±5%
r1%
r0.1%
< 0.5% /year
temperature accuracy -40…0°C (-40…32°F): 0.5 K
0…50°C (32…122°F): 0.2 K
50…70°C (122…158°F): 0.5 K
Signal output signal output
resolution ratio
maximum load
DC 0-10V or 0…20mA
10 Bit, 9.7 mV, 0.019.5 mA
20 mA, 500ȍ
Enviroment temperature
humidity 0…70°C (32…158°F) <95% RH. non-condensing
temperature
humidity -40…80°C (-40…176°F) <95% RH. non-condensing
Housing Materials cover
mounting Plate Fire proof ABS plastic
Galvanized Steel
General dimensions (H x W x D) 21 x 88 x 88 mm (0.8 x 3.5 x 3.5 in)
weight (including package) 105 g (3.7 oz)
Dimension diagram mm (inch)
Installation
The sensor is composed of two parts, (a) base plate (b) cover of transmitter. It shall be installed on the
indoor wall where there is good air circulation with 1.5 meters height from the floor. Avoid installing the
sensor above heater or the place with direct sunlight.
88
(
3.5
)
88 (3.5)
21
(
0.8
)

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1. Disassemble base plate by loosening mounting screw
2. Install the base plate on the indoor wall
3. Wiring in accordance with wiring diagram
4. fasten wiring connection tightly in order not to have virtual wiring
5. Fix the cover of transmitter to base plate
6. Assemble the cover
7. Use screw driver#2 to fix the screw
Wiring diagram
1: G power supply, 0VAC, +24VDC
2: G0 power supply, 24VAC, -24VDC
3: U1 JP1 = 1-2, humifity voltage output, 0…10V or 2…10V (JP3)
3: I1 JP1 = 2-3, humifity voltage output, 0…20mA or 4…20mA (JP3)
4: B1 Resistance temperature signal
5: M1 Resistance temperature signal
Output signal setting
By use of short cuts, output signal can change in the range of 0…10V, 0…20mA or 2…10V, 4…20mA.
0-10 V is defined as factory settings, and please change to 4…20mA before usage. Please refer to Chapter
“Duct temperature and humidity sensor SDB-TN10-20” for detailed short cuts position.
(3) CO2sensor EE85-2C65
Main features
¾CO2concentration measurement in air duct
¾Easy to install and automatical calibration
¾Analog signal output 4~20mA

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Technical specifications
Power supply operating voltage 15-35VDC
power dissipation Typical current output 10mA +
Connection wiring terminal max1.5 mm2(AWG 16)
Sensing element sensor
scope
E+E Dual-source infrared system
0…2000ppm
accuracy @25ć, 1013mbar <±(50ppm+2%*mv)
Signal output signal output 4…20mA
Environment temperature
humidity
-20…60°C
<95% RH. non-condensing
temperature
humidity
-20…60°C
<95% R.H. non-condensing
Dimension diagram mm (inch)
Installation
The product is composed of two parts: (a) probe and (b) upper shell. It shall be installed at position with
smooth air circulation. Position with 2-3 meters distance from fan or cooling coil is recommended to
achieve accurate measurement.
1. Drill diameter 13mm hole on duct and use four tapping screws to fix the shell tightly on duct
2. Open the shell
3. Connecting signals in line with electrical diagrams.
4. Insert the probe in, use two tapping screws to fix the shell tightly on duct
5. Install the shell
6. Fix the screws
7. Screw driver #2, suggest using AMC-2 for cable protection

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Wiring diagram
(4) Water valve and damper actuator
Technical specifications
Power supply AC 24V 50/60HZ DC24V
Connecting cable 1m 4*0.75mm²
Rotate angle 90°
Rotate direction Default set as clockwise. Can change to
counterclockwise by the switch under black label
Position indication Mechnical indication
Operating time 90s
IP class IP54
Control signal Y DC 2(0)…10V@input resistance 100Kȍ
Position feedback U DC 2…10V @Max output 1mA
Manual operation Put down manual operation button to unlock
actuator. Then keep pressing then button formanual
operation.

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Wiring diagram for water valve and damper actuator
Č
Human-computer Interface of AHU control system
1. Feature
An 8 inches touch screen is selected as human-computer interface of AHU control system, with function
indicated buttons to provide user-friendly interface for customer.
2. Instructions to use HMI
HMI of 39CQ control system is composed of unit information interface and parameter setting interfaces.
δ
1
ε
Unit information interface
Customer can use unit information interface to monitor unit operation parameter and to turn on/off unit.

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Unit information interface is shown above, in which customer can find sensor measurement, damper
/valve opening and fault information. Two languages are available and easy for transferring. Touch botton
or to transfer between English and Chinese language.
Touch botton to enter alarm interface if there is any fault on unit operation, shown in
below.
Customer can easily find fault unit information in alarming interface, i.e. the time fault occurs and fault
type, so as to solve fault at the first time. Touch botton and go back to main interface.
δ
2
ε
Main interface
Touch botton to enter main interface, in which cutomer can go into each submenu of
control system. There are total five submenus available, Unit information, User settings, System settings,
Maintenance information and Alarm interface, shown as below.
δ
3
ε
User settings
Touch botton to enter below user settings menu with below orders.

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Items Descriptions
On/off Press on/off key to turn on/off the AHU
Time table
Choose open or close time table function by touching the key below
Fan Speed Set up fan speed by touching the key below
Cooling/heating mode When the unit is off, exchange between cooling mode and heating mode by
touching the right key
Season switchover Touch the right key of season switchover, to select manual switchover or
automatical switchover.
Constant temperature control Open or close constant temperature control function by touching the right
key
Constant humidity control Open or close constant humidity control function by touching the right key
Cooling setting Set up cooling temperature by touching the key below
Heating setting Set up heating temperature by touching the key below
¾Setting temperature
Touch the key below “cooling setting” and enter below menu. Choose required cooling temperature
and touch on to finish the setting of cooling temperature.f
¾Setting time table
When to use timing on/off function, firstly touch button to enable time table.

15
Button will change to if enable works and touch botton to enter into timing
on/off setting menu. In this menu, customer can set unit start time during one day and applied
days in one week.
δ
4
ε
System settings
System parameters can be set in below interface.
Items Descriptions
Control strategy Set return air temperature & humidity, return air enthalpy and indoor
temperature & humidity(1)
Fan speed Choose manual or auto mode of fan; set fan speed at manual mode
Damper opening Choose manual or auto mode of damper; set the opening of fresh air
damper at manual mode
Water valve opening Choose manual or auto mode of water valve; set the opening of cold/hot
water valve at manual mode
Operating time Set unit maintenance time
Humidifier opening Choose manual or auto mode of humidifier; set the opening of humidifier
at manual mode
Note:᧤1᧥Controller will collocate temperature and humidity sensor according to the setting of
control strategy.

16
č
Failure diagnosis and solution
No. Fault indicated on HMI Solution
1 supply fan can’t start check wiring and contacts
2 supply fan failure check converter of supply fan
3 fire alarm checking fire alarm sensor movement if the fire alarm signal
appears
4 filter blocking remove and clean filter
5 frost-protection check if the temperature of cold water is too low
6 humidifier failure check if any humidifier fault with reference to its manual
7 return air temperature sensor failure replacing the sensor with reference to the manual
8 outlet air temperature sensor failure replacing the sensor in accordance with the manual
9 supply air humidity sensor failure replacing the sensor in accordance with the manual
10 indoor temperature sensor failure replacing the sensor in accordance with the manual
11 indoor humidity sensor failure replacing the sensor in accordance with the manual
12 supply air humidity sensor failure replacing the sensor in accordance with the manual
13 CO2 sensor failure replacing the sensor in accordance with the manual
14 static pressure transducer failure replacing the sensor in accordance with the manual
15 damper temperature sensor failure replacing the sensor in accordance with the manual
16 Maintenance alarm check the fans

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Appendix: Wiring Diagram
Fig. 1φ

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Fig. 2φ