Swegon Conductor W4 User manual

CONDUCTOR W4
Technical Manual - sw 1.48 20210201

Introduction and Safety ..................................... 5
About this Manual.................................................. 5
Product Design Changes......................................... 5
Safety Precautions .................................................. 5
Technical Description ......................................... 7
About Conductor W4............................................. 7
Controller and Room Unit (thermostat) ................... 7
Installation Examples .............................................10
Adjustable Sequences for Cooling..........................13
Operating Mode....................................................14
Operating Modes ..................................................15
Functions...............................................................17
C-Factor and Offset ...............................................21
Technical Data .......................................................22
Installation ....................................................... 25
Ordering, Delivery and Electrical Installation...........25
Preparations ..........................................................26
Step 1, To Mount the Controller.............................27
Step 2, To Connect the Units W4.2........................29
Step 2, To Connect the Units W4.1 ........................31
Step 3, Commissioning ..........................................33
Step 4, To Install the Room Unit (thermostat).........35
The Menus of the Room Unit (thermostat)........ 37
The Main Image and the Key Pad of the Room Unit.37
Overview of the Menu System of the Room Unit. ..39
Navigating in the Menus of the Room Unit ........... 40
Changes in the Main Image ...................................41
Changes and Settings in the Service Menu ............42
Show system information ......................................52
Change parameters ...............................................52
Show Alarms .........................................................53
Service ............................................................. 55
Parameters ............................................................55
System Parameters.................................................55
Application Parameters......................................... 58
Indication on the Controller...................................65
Trouble shooting .................................................. 66
ModBus Register .................................................. 68
Contents
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CONDUCTOR W4
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Introduction and safety
About this manual
This manual is intended for use by the members of the staff who are
responsible for maintenance of the climate system and it contains the
following information:
• Technical description of the CONDUCTOR W4 controller.
• Installing and commissioning the CONDUCTOR W4 controller .
• Instructions on how the various settings should be entered in the room
unit (thermostat).
The Service section is intended for personnel who are specially trained by
Swegon.
Product design changes
Swegon reserves the right to change the specifications in the manual and
change the design of the product without notice.
Safety precautions
Responsibility
It is the responsibility of the user to do the following:
• Assess all the risks involved in the activities which are related to this
manual.
• Make sure that all necessary safety precautions are made before
starting the activities which are related to this manual.
Safety levels
The following levels of safety warnings are used in this manual:
WARNING:
Used when there is risk of damage to persons or
equipment.
N.B.!
Used to point out important information.
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CONDUCTOR W4

CONDUCTOR W4
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Technical Description
About Conductor W4
CONDUCTOR W4 is a controller application in the CONDUCTOR series. The
W designation indicates that the application is applicable to water-borne
climate systems.
CONDUCTOR is a control system for the individual control of room
temperature and airflow. It can operate independently or in combination
with a central system.
CONDUCTOR W4.2/W4.1
CONDUCTOR W4 is available in two variants. W4.2 especially adapted
for conferense rooms, and CONDUCTOR W4.1 especially adapted for
partitioned offices and hotel rooms.
Controller and Room Unit (thermostat)
The main components in the CONDUCTOR W4 control system are a
controller and a room unit (thermostat).
Controller
2
3
4
5
6
7
8
1
Figure 1. Overview of the Controller.
Pos 1. Product marking.
Pos 2. Termination resistance.
Pos 3. Modbus RTU units.
Pos 4. Inputs: Wiring terminals for the connection of sensors.
Pos 5. DIP switch for ModBUS RTU.
Pos 6. LED, indicates the status of the controller.
Pos 7. Input and output for signal to external relay.
Pos 8. Outputs: Wiring terminals for the connection of valve and damper actuators.
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CONDUCTOR W4

The controller is equipped with inputs for connection of a condensation
sensor, carbon dioxide sensor, window switch, presence detector and
outputs for the connection of actuators for valves and air dampers.
Up to twelve pairs of actuators (twelve for cooling + twelve for heating) can
be wired to each controller. Or you can connect up to four complete units
per controller for controlling both the airflow (supply air and central extract
air, 5 damper actuators) and cooling and heating (cooling and heating
circuit, valve actuators).
The controller provides proportional and integral (PI) control. Through
so-called PWM control (pulse width modulation), the I section senses both
the size and the duration of the control deviation and adjusts the actuator
opening time accordingly. It is possible to switch over from PWM control to
0-10 V control, if needed.
The user can easily configure the controller functions and parameters by
means of the room unit (thermostat).
The controller has a built-in communication port that enables connection to
an RS 485 network with ModBus RTU for supervising and override control
via a main control system.
Product Identification Label
The product identification label affixed to the front of the controller,
indicates rated data, the controller ID-number, which you will need when
you install the CONDUCTOR.
1
3
2
4
Conductor RE W4.2
Modbus Adress 2
Artnr: 942334001
RF id: 00350
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
Figure 2. Product identification label on the controller.
Pos 1. Name of the product.
Pos 2. ModBus RTU address.
Pos 3. Part number.
Pos 4. Controller ID number.
CONDUCTOR W4
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Room Unit
1
2
3
Figure 3. Overview of the room unit (thermostat).
Pos 1. Display
Pos 2. Keypad.
Pos 3. Temperature sensor.
The room unit is simple to use and has an easy-to-interpret design
that makes it user-friendly. The digital display shows the current preset
temperature and airflow settings.
The function of the room unit is to measure the temperature in the room,
communicate with the controller and to serve as a tool for adjusting the
climate in the room.
The internal communication between the controller and the room unit is
wireless, which makes it easier to find an appropriate spot in the room
where the room unit can be installed.
If requested, the room unit can be wire-connected to the controller. All
cable connections are hidden above the false ceiling and all wiring is carried
out with detachable standard connections, i.e. screw wiring terminals.
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CONDUCTOR W4

Installation Examples
The illustration below shows a typical arrangement of a complete installation
with the CONDUCTOR W4.2 control system.
Figure 4. Example of a CONDUCTOR W4.2 installation.
CONDUCTOR W4.2 (Conference Room)
PARASOL PARASOL-xxxx-B Comfort module
K1/ K2 CONDUCTOR RE W4.2 Controller
BT1 / P1 CONDUCTOR RU Room unit
BH1 Condensation sensor
BP1 SA SYST PS Pressure sensor, supply air
BP2 EA SYST PS Pressure sensor, exhaust air
BP3 SA2 SYST PS Pressure sensor, supply air 2
BO1 DETECT Occupancy Presence detector
BQ1 DETECT Quality CO2sensor, 2-10 V
SA1 / D1 CRTc-(aaa)-2 Supply air damper 1 including motor
EA / D2 CRTc-(aaa)-2 Extract air damper including motor
SA2 / D3 CRTc-(aaa)-2 Supply air damper 2 including motor
Q1 ACTUATOR b 24V NC Valve actuator, cooling
Q2 ACTUATOR b 24V NC Valve actuator, heating
T1 SYST TS-1 Transformer
LD CLA 125-500 Sound attenuator
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Installation Examples
The illustration below shows a typical
arrangement of a complete installation with
the CONDUCTOR W4.1 control system.
Figure 5. Example of a CONDUCTOR W4.1 installation..
CONDUCTOR W4.1 (Hotel/Office)
PARASOL PARASOL-xxxx-B Comfort module
K1/ K2 CONDUCTOR RE W4.1 Controller
BT1 / P1 CONDUCTOR RU Room unit
BH1 Condensation sensor
BP1 SA SYST PS Pressure sensor, supply air
BP2 EA SYST PS Pressure sensor, exhaust air
BO1 DETECT Occupancy Presence detector
BQ1 DETECT Quality CO2sensor, 2-10 V
SA1 / D1 CRTc-(aaa)-2 Supply air damper 1 including motor
EA / D2 CRTc-(aaa)-2 Extract air damper including motor
Q1 ACTUATOR b 24V NC Valve actuator, cooling
Q2 ACTUATOR b 24V NC Valve actuator, heating
T1 SYST TS-1 Transformer
LD CLA 125-500 Sound attenuator
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CONDUCTOR W4

Installation Examples
The illustration below shows a typical arrangement of a complete installation
with the CONDUCTOR W4.1 control system.
Figure 6. Example of a CONDUCTOR W4.1 installation..
CONDUCTOR W4.1 (Hotel/Office)
PARASOL PARASOL-xxxx-B Comfort module
K1/ K2 CONDUCTOR RE W4.1 Controller
BT1 / P1 CONDUCTOR RU Room unit
BH1 Condensation sensor
BP1 SA SYST PS Pressure sensor, supply air
BO1 DETECT Occupancy Presence detector
SA1 / D1 CRTc-(aaa)-2 Supply air damper 1 including motor
Q1 ACTUATOR b 24V NC Valve actuator, cooling
Q2 ACTUATOR b 24V NC Valve actuator, heating
T1 SYST TS-1 Transformer
LD CLA 125-500 Sound attenuator
TA RGVb Transfer grille
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Adjustable Sequences for Cooling
The controller can be set for one of two different sequences for cooling:
• Air – Water with temperature - and carbon dioxide control
• Water – Air with temperature - and carbon dioxide control
Air – Water with temperature - and carbon dioxide
control
Temperature/CO2
26°C
1000 PPM
24°C
800 PPM
22°C
600 PPM
Time
period
Water
CO2
Temperature
Air 2
Air 1
Occupancy
No
occupancy
20%
50%
100%
Flow %
Figure 7. Typical diagram dealing with the air-to-water sequence with temperature control.
Note! Air 2 is valid only for W4.2
The sequence involves the following: If occupancy is registered in the room
and if the temperature is at a certain level, the system starts a cooling
process that cools down the room by increasing the airflow.
If the temperature rises more and the increased airflow is not sufficient for
maintaining the required temperature, the cooling process is supplemented
with cooling by circulating chilled water in the water pipes.
If the level of carbon dioxide in the room exceeds a certain level, the air
system is activated in order to reduce the level and keep it constant.
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CONDUCTOR W4

Water – Air with temperature control
Flow %
100%
50%
20%
No
occupancy
Occupancy
CO2
Air 1
Temperature
Water
Air 2
Temperature/CO2
26°C
1000 PPM
24°C
800 PPM
22°C
600 PPM
Time period
Figure 8. Typical diagram dealing with the water-to-air sequence with temperature control.
Note! Air 2 is valid only for W4.2
The sequence involves the following: If occupancy is registered in the room
and if the temperature is at a certain level, the system starts a cooling
process that cools down the room by circulating chilled water in the water
pipes.
If the temperature rises more and the chilled water is not sufficient for
maintaining the required temperature, the cooling process is supplemented
by increasing the airflow.
If the level of carbon dioxide in the room exceeds a certain level, the airflow
is increased in order to reduce the level and keep it constant.
Operating Mode
Depending on the status of connected sensors, the controller adjusts the
outputs from any of several possible operating conditions.
The various operating conditions described here are based on occupancy
in the room and the status of the window contact, condensation sensor,
carbon dioxide sensor and the current pressure.
Occupancy Window Condensation Carbon
dioxide Airflow Cooling
No No No No Low ECON
Yes No No No Normal Normal
Yes Yes No No Low Closed
Yes No Yes No High Closed
Yes No No Yes High Normal
Yes No No No Normal Normal
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Operating Modes
There are a variety of functions built into the CONDUCTOR:
• MAN, manual mode.
• AUTO, automatic mode.
• ECON, energy-saving mode.
• Holiday, energy-saving mode.
• Boost, extra air supply.
• Timer, timed extra air supply.
• Stand-by mode, idle position.
• EMERG, emergency mode.
MAN, Manual operating mode.
Whenever the CONDUCTOR registers occupancy in the room in response
to signals from a presence detector, the user can regulate the temperature
and airflow rate by entering settings in the room unit. When the user enters
a new desired setting, the controller switches over to the manual operating
mode (MAN).
AUTO, Automatic operating mode.
When the CONDUCTOR no longer registers occupancy in the room, the
controller automatically decreases the supply air flow to the low airflow
setting and the system automatically returns to the AUTO mode.
The controller also switches automatically to the AUTO mode after a
predefined number of minutes after the most recent change, manually
entered on the room unit.
When the controller is set to the automatic mode, the valve actuators for
chilled water and hot water respectively and the supply air damper and
extract air damper respectively are adjusted in response to occupancy in the
room and the level of carbon dioxide as well as the status of the window
contact and the condensation sensor.
The automatic control system controls the airflow, cooling and heating until
the user manually enters a new airflow or temperature setting.
ECON, energy-saving mode.
When the energy-saving function is enabled, the system switches
automatically to the ECON energy-saving mode, when no occupancy has
been registered for a predefined number of minutes. The system returns to
the AUTO mode when occupancy is registered again.
In the energy-save mode, the valve actuator is controlled for chilled water
and hot water respectively according to the status on other sensors in the
room, but with a greater permissible difference between actual value and
setpoint than in the AUTO mode.
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Holiday, Energy-saving operating mode
When a room is not in use, it is possible via a main control system to
continue RE in the holiday mode.
The required airflow and switch in times for cooling and heating can be
selected in the holiday mode.
Boost, extra air supply
When the need for more air arises, the RE switches over to operate in the
Boost mode. This can occur for example when the CO2 level increases, or
if the temperature rises above the desired level in the room and more air
needs to be pressed in to increase the cooling capacity.
Timer, timed extra air supply.
The timer function is used for ventilating the room extra when the first
occupant enters the room after the room ventilation system has been
operating in the ECON/Holiday mode. The RE then operates in the Boost
mode.
The time is set with one parameter, factory preset to 5 min.
Stand-by mode.
When the control system registers a signal indicating that a window is open,
the controller switches over to the standby mode. When the window is
closed, the controller switches to the AUTO operating mode.
While the controller is in the Stand-by mode, the room temperature is
maintained above the predefined level for the Frost protection function.
EMERG, emergency mode.
In the event of a fire alarm, the air damper in the extract air duct is opened
or closed, depending on the setting entered in the control system. The
cooling and heating functions are shut off while the system is in the EMERG
mode. The supply air is normally shut off.
The EMERG mode can only be managed in control systems that are
connected to a main control system via ModBus RTU.
CONDUCTOR W4
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Functions
There are a variety of functions built into the CONDUCTOR W4:
• Exercising of valves
• First open
• 0-point calibration
• Frost protection
• Change over 2-pipe.
• Change over 4-pipe
• Night cool
• Time-set setpoint restoration
• Cold draught protection
• Digital airflows
• Digital Occupancy
• Commissioning, Air/Water
• Two-step heating
• Relay function
Exercising of valves
The function involves regularly exercising the water valves by utilising
automated functions in order to prevent them from becoming sluggish or
jamming. During the exercising period, all the valves that are wired to the
controller are opened for a maximum of 6 minutes and are then closed.
The valves for the cooling system are exercised first. Then the valves for the
heating system are exercised.
First open
The function means that the water valves are open when the system is
installed, which makes it easier to fill, pressure test and vent the water
system.
The function will be automatically disabled after the actuator has been
energized for approx. 6 minutes. A clicking noise will be heard when the
valves and the dampers change over to the NC mode (=normally closed)
and the normal control function is enabled.
Zero Calibration
Zero calibration of the pressure sensors connected to the RE: The dampers
are closed and a calibration signal is transmitted to the pressure sensor, after
which the RE returns to the relevant operating mode.
The time interval is set with the appropriate system parameter and is
specified in hours.
Frost protection
The function involves the following: Heating operation is started at a
predefined room temperature in order to counteract the risk of damage that
otherwise can arise due to freezing.
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Change over 2-pipe
2-pipe change over involves the use of only one valve actuator which should
be wired to the cooling output terminal. This actuator then controls both
the heated water and the chilled water, which is transported in the same
pipe. In winter, when heating is required, the valve opens if the water in the
pipe is warmer than the temperature set point. If the water is colder, the
valve does not open.
In summer, when cooling is required, the valve opens if the water in the
pipe is colder than the temperature set point. In order to be able to use this
function, you are required to mount an external temperature sensor onto
the water pipe through which supply water circulates continuously. Wire
the sensor according to the general wiring diagram shown in the section
entitled: “Installation”.
Change over 4-pipe
4-pipe change over means that the pipe system consists of 4 pipes: cooling,
heating with supply and return.
A 6-way valve (CCO® – Compact Change Over) is used for alternating
between heated or chilled water conveyed to the room product’s coil. The
whole coil is then utilized for heating or cooling with one and the same
circuit, in contrast to a traditional cooling/heating solution in which heated
water and chilled water are conveyed in separate circuits inside the coil.
Even here, the regulator’s cooling output is used for controlling cooling/
heating.
Night cool
The function involves using cold air from outdoors for cooling the room at
night to the predefined level.
The function can only be managed in control systems that are connected to
a main control system via ModBus RTU.
Time-set setpoint restoration
The function involves adjusting the room temperature to the predefined
level when the controller switches to the AUTO operating mode.
The controller also switches automatically to the AUTO mode after a
predefined number of minutes after the most recent change, manually
entered on the room unit.
Timed resetting of set points
The function involves adjustment of the room temperature to the pre-
defined level when the controller switches over to the AUTO mode.
The controller automatically switches to the AUTO mode after a pre-defined
number of minutes after the latest manual change entered in the room unit.
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Cold draught protection
To prevent cold down-draughts, the controller can in certain cases switch on
both heating and cooling.
This is set via parameters: one parameter for setting the level of the output
signal for the hot water valve actuator and one parameter for how great the
cooling requirement can be before the heat is switched off.
Digital airflows
The function involves controller support for obtaining its airflow set point
from Modbus, both in the normal mode and in the BMS mode.
The set point is adjusted and the function is activated via parameters.
Digital Occupancy
The controller has support for activation of the occupancy mode via
Modbus, both in the normal mode and in the BMS mode. This function
interacts with the controller’s internal occupancy switching and if any of
these signals are activated, the controller will switch over to the occupancy
mode. Occupancy is deactivated again when none of the signals is active
any longer.
Commissioning, Air/Water
The function can set the controller to a required commissioning mode
via Modbus, both in the normal mode and in the BMS mode. The
commissioning mode can also be selected from the Room unit. It is possible
to run an air sequence and a water sequence at the same time.
The various modes are the following:
Air
* Airflow, no occupants
* Airflow, minimum occupancy
* Airflow, maximum occupancy
* Airflow, Holiday
Water
* Open valve actuators, 100% cooling
* Open valve actuators, 100% heat
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CONDUCTOR W4

Two-step heating
The heating output or the internal relay can be utilized for controlling an
additional heat source in a second heating step. See the description of the
outputs/relay under the heading “Connecting the units” in the previous
installation chapter.
When the heating demand has been 100 % during a period that exceeds
the time delay that has been set via parameter P_1058, a 100 % output
signal is fed out to the heating output. This then remains at 100 % until
the heating demand drops below 95 % and no signal is then fed out to the
output. W4.1 and normal cooling/heating operation: Heating step 1 on the
normal heating output and heating step 2 on the internal relay.
W4.1 and change-over operation: Heating step 1 on the cooling output and
heating step 2 on the heating output.
W4.2: Two-step heating can only be run in combination with change-over:
Heating step 1 on the cooling output and heating step 2 on the internal
relay.
The Two-step heating function must be activated with parameter P_1057.
Relay function, Off/On
The function activates/deactivates the controller’s relay function via a
parameter.
CONDUCTOR W4
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