wavin WTC-3 Guide

Intelligent Solutions for Heating & Cooling Projects
June 2010 version 2.0
Wavin Tempower Controls WTC-3 & DRT-200
.
Intelligent Solutions for Heating & Cooling Projects
April 2010 version 2.0
Wavin Tempower Control WTC-3 & DRT-200
FOR RESIDENTIAL,
COMMERCIAL AND
INDUSTRIAL APPLICATIONS
.
FOR RESIDENTIAL, COMMERCIAL
AND INDUSTRIAL APPLICATIONS

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Ta ab bl le eo of fC Co on nt te en nt ts s
1
1. .A Ab bo ou ut tt th hi is sm ma an nu ua al l3 3
1.1 Audience 3
1.2 Scope 3
2
2. .S Sa af fe et ty y4 4
2.1 General recommendations 4
3
3. .T Th he eC Co on nt tr ro ol lS Sy ys st te em m5 5
3.1 Overview of the system 5
3.2 Components 5
4
4. .D DR RT T- -2 20 00 0d di ig gi it ta al lr ro oo om mt th he er rm mo os st ta at t6 6
4.1 Introduction 6
4.2 General description 6
4.3 Installation 6
4.4 Functions 7
5
5. .W WT TC C- -3 3B Ba as se eU Un ni it t9 9
5.1 General description 9
5.2 WTC-3 Major features 9
5.3 Control 7 room thermostat 12
5.4 Dew point 14
5.5 Connect actuators 15
5.6 Changeover heating and cooling mode 16
5.7 Energy saving mode/economy mode 18
6
6. .C Co om mp po on ne en nt ts sc co on nt tr ro ol l1 19 9
6.1 Mixing valve control 19
6.2 Room humidity control via dehumidifier 20
6.3 Pump control (speed control pump) 21
6.4 Boyler/chiller control 22
6.5 Operation with optional timer for
Comfort/economy mode 23
7
7. .B Bu ui il lt ti in np pr ro og gr ra am ms s2 24 4
7.1 Program 1 25
7.2 Program 2 27
7.3 Program 3 29
8
8. .C Co on nn ne ec ct tt to oB Bu ui il ld di in ng gM Ma an na ag ge em me en nt tS Sy ys st te em m
(
(B BM MS S) )3 31 1
8.1 Communication 31
8.2 MODBUS commands 31
8.3 RJ45 plug wiring 31
8.4 Register (only readable) 32
8.5 Bit variables 8only readable) 34
8.6 Readable, writeable bit variables 36
8.7 Readable, writeable register variables 37
9
9. .W WT TC C- -3 3C Co on nf fi ig gu ur ra at ti io on nP Pr ro og gr ra am m3 38 8
9.1 General information 38
9.2 Installation 38
9.3 Other settings 38
9.4 Connect WTC-3 with laptop computer 39
1
10 0. .T Tr ro ou ub bl le es sh ho oo ot ti in ng g4 41 1
1
11 1. .T Te ec ch hn ni ic ca al lS Sp pe ec ci if fi ic ca at ti io on ns s4 44 4

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1. .1 1A Au ud di ie en nc ce e
This document serves as planning assistance for the
specialist planning in order to calculate and install the
Wavin Tempower Heating and Cooling system.
1
1. .2 2S Sc co op pe e
This document contains technical information about the
Wavin Heating and Cooling systems.
Before engineering the system, read this document
carefully to get familar with the technical aspects and
strictly observe the given indications and instructions.
Make sure that you understand the operation of the
system. If you do not understand any part of the
information in this manual, contact Wavin BV.

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The following information is intended to help you throughout the
entire documentation.
We accept no liability for any damage caused by non observance
of these instructions.
2
2. .1 1G Ge en ne er ra al lr re ec co om mm me en nd da at ti io on ns s
Installation must be installed by a suitably qualified
engineer, who is responsible for observing all relevant
standards and regulations
Only make changes or modifications as specified in
this manual.
Power must be switched off when installing the
wiring.
The Wavin Control System uses a 230VAC 50Hz power
supply.
In case of emergency, immediately disconnect the plug
from the 230V mains.
Do not use water to clean the Wavin Control System.
Do not expose the Wavin Control System to flammable
vapours or gases.
Keep installation/data cables away from power cables >
50V to avoid interference.
The electrical circuits of the boiler and the pump must
be protected by a maximum 6A circuit-breaker.
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The Wavin Tempower Control System is a complete
solution for surface heating and cooling systems.
Control for each individual room to ensure the highest
comfort and low energy consumption with help of the
most modern technology.
The Wavin Tempower control system is designed for easy
installation and user friendly operation to gives the highest
value to low temperature heating and high temperature
cooling system.
3
3. .1 1O Ov ve er rv vi ie ew wo of ft th he es sy ys st te em m
The Wavin Tempower Control System consists of a base
unit, room thermostat, sensors and actuators. The base
unit manages the operation of the actuator when the
thermostats detect a demand for heating or cooling, and
monitors relative humidity to prevent condensation.
The Wavin Tempower Control System can be controlled by
two types of thermostats.
33..TThheeCCoonnttrroollSSyysstteemm
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3. .2 2C Co om mp po on ne en nt ts s
WTC-3 Base Unit
DRT-200 Digital Room Thermostat
Dew point sensor for wet system
Dew point sensor for dry system
Temperature sensor
Wavin Actuator (230V NC)
The Wavin DRT-200 thermostats with built-in
humidity sensor, designed for maximum comfort,
communicating via a two wire BUS protocol
Any type of analog room thermostat.
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4. .1 1I In nt tr ro od du uc ct ti io on n
The Wavin DRT-200 is an aesthetically pleasing digital room
thermostat. It is designed for maximum comfort, with an accu-
rate temperature sensor and built in humidity sensor.
4
4. .2 2G Ge en ne er ra al ld de es sc cr ri ip pt ti io on n
DRT-200 has a unique touch surface to set the
temperature and adjust between modes. The DRT-200
has a completely digital construction and does not
contain any moving parts, giving it significantly
increased lifetime. The temperature and operation mode
settings are indicated by LEDs. The thermostat matches
the size of standard electric boxes, ensuring easy
installation and fit. The thermostat does not require a
separate power supply as it works via the communica-
tion cable.
4.2.1. How to use the thermostat
1 DRT-200 is always in standby mode when is
connected.
2First touch the dial sensor to switch on the setting
mode.
3Change the setting as you want.
4 The thermostat will go back to Standby mode after
5 seconds.
4
4. .3 3I In ns st ta al ll la at ti io on n
The thermostat consists of two parts, the mounting
plate and the front panel. The mounting plate carries
the connecting terminals. This plate should be screwed
onto a standard 65 mm mounting box with the
connecting terminals at the bottom.
Connect the supply wires to the terminals at the
bottom of the plate.
Click the front panel carefully onto the mounting
plate. Top part first.
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4. .4 4F Fu un nc ct ti io on ns s
4.4.4. ON/OFF function
The on/off button will turn off the heating or cooling in the room:
when the thermostat in off mode then the actuator(s) is in the
closed position. This function can be activated by the room
thermostat (default) or via a master thermostat or the building
management system.
4.4.1. Temperature setting
The device defaults to the winter or summer reference
temperature of the current operating mode. The default reference
temperature for summer is 26 °C, and for winter is 21 °C. The
temperature setting range from the reference temperature is +/- 6
°C (default). Temperature settings can be adjusted by the touch
buttons or by holding and moving the fingers on the touch surfa-
ce.
Ready for setting.
Addressing:
Please follow these steps to address the DRT-200
in right way:
- Press the heating/cooling buttons minimum 3
seconds until the confort/economy buttons are
illuminate.
- Press the comfort/economy buttons minimum 3
seconds until the heating/cooling buttons are
illuminate.
- Press again the heating/cooling buttons minimum
3 seconds until all LED off.
- Set the requested address 1-7 according to
the picture.
- Save the new setting with press the On/Off
button.
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4.4.2. Comfort/economy mode
The thermostat has a comfort/economy function. When the
comfort mode is activated (by pressing the moon symbol) the set
temperature will be 17 °C (default).This function can be activated
by the room thermostat (default) or via a master thermostat or the
building management system.
4.4.3. Heating/cooling mode changeover
This function changes the complete heating/cooling system from
one mode to an other. If the heating system is a four pipe
system then all connected zone valves will controlled via the
WTC-3. This function can be activated only on the master
thermostat (default).
4.4.5. Built in humidity sensor
Every DRT-200 room thermostat has a built in relative humidity
sensor. This sensor continuously measures the relative humidity in
the room and sends information to the WTC-3 base unit. In case
of high humidity the WTC-3 will adjust the set temperature of
thermostat increasing it step by step.
4.4.6. Open window detection
Each thermostat has an open window detector input. If this is
used with a window sensor, then the thermostat will stop the
heating/cooling system if the window is opened.
4.4.7. Dew point sensor connection
Each thermostat has a dew point sensor input. This sensor is
installed in the ceiling operates as an override if the sensor
detects condensation; the thermostat closes the actuator on the
manifold, stopping the cooling in the room.
4.4.8. Dimmer function
The thermostat continuously measures the brightness of the envi-
ronment, and sets the LEDs brightness accordingly. This ensures
a higher comfort level as the LEDs dim in low light condition.
Resuming, this is a total overview of the DRT-200 and his
functions:
1 In and out points of ventilation channel
2 Dial sensor to set temperature
3Indication LEDs of set temperature
4Heating/Cooling changeover buttons
5ON/OFF button
6 Comfort/Economy buttons

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5. .1 1G Ge en ne er ra al ld de es sc cr ri ip pt ti io on n
WTC-3 base unit is developed to control up to 7
thermostats and up to 21 actuators connected to the
hydraulic installation. The controller drives the actuators
according to the information received from each thermo-
stat and the system parameters settings. The controller is
usually located close to the hydraulic system manifold.
5
5. .2 2W WT TC C- -3 3M Ma aj jo or rf fe ea at tu ur re es s
Controls up to 7 room thermostats.
Contols one or more dehumidifier with DRT-200.
Monitors dew point via the relative humidity
sensor of the room thermostat
Up to 21 actuators can be connected
Changeover heating and cooling mode
Energy saving mode/economy mode
Three built in programs
Room humidity control via a separate
de-humidifier
Pump control (frequency changer control)
Boiler/chiller control
Operation with optional timer Comfort/Economy
mode
Master and Slave Setting option
Emergency Pump stop in case of overheat.
Connection possible to a Building Management
System (BMS) via BUS
Software to test, update and presetting datas
5.2.1. Placing and connecting power
Mount the WTC-3 within 0,8 meter of the
actuators. If this is not possible, you will need
to extend the actuator wires.
Use a standard electrical box to install
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Click the base unit onto the rail
Always connect the WTC-3 to a separate circuit
breaker.
C
CA AU UT TI IO ON N: Before wiring, disconnect the electrical power to the
system to prevent electrical shock and damage to the device.
5.2.2. Connect two or more WTC-3 together :
Master and Slave WTC-3
Turn all DIP switch to upward position that
means :0
This settings will define the master WTC-3
The Slave WTC-3 must have different settings
like 1,2,3...
The last Slave has to be closed with the BUS
switch. Turn it to the corner. See below picture
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Wi ir ri in ng g: :
All wiring must comply with local electrical codes and
specifications.

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D
De ef fa au ul lt ts se et tt ti in ng gs sW WT TC C- -3 3
After installation of WTC-3 base unit the following settings will
work as a defult
W
Wa at te er rt te em mp pe er ra at tu ur re er re eg gu ul la at to or r: :
Cooling Set point: 15 °C
Heating Set point: 45 °C
Heating/Cooling Changeover time: 600sec
Emergency Stop Temperature: above 65 °C
D
DR RT T- -2 20 00 0r ro oo om mt th he er rm mo os st ta at t: :
Cooling reference temperature: 26 °C
Heating reference temperature: 20 °C
Economy set point: 17 °C
Setting range +/-: 6 °C
Heating and Cooling Hysteresis: 0.5 °C
M
Ma as st te er rt th he er rm mo os st ta at tc co on nf fi ig gu ur ra at ti io on n: :
Master Comfort/Economy: DRT200 N °1
Master ON/OFF: DRT200 N °1
Master Heating/Cooling: DRT200 N °1
C
Co oo ol li in ng gm mo od de eE En na ab bl le e/ /D Di is sa ab bl le e: :
Outputs: Default setting:
1 Enable
2 Enable
3 Enable
4 Enable
5 Enable
6 Disable
7 Enable
D
De ef fa au ul lt tO Ou ut tp pu ut tc co on nf fi ig gu ur ra at ti io on n: :
Outputs: Function:
1 Actuator of 1st DRT200
2 Actuator of 2nd DRT200
3 Actuator of 3rd DRT200
4Actuator of 4th DRT200
5 Actuator of 5th DRT200
6Actuator of 6th DRT200
7Actuator of 7th DRT200
8 Pump
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5. .3 3C Co on nt tr ro ol l7 7r ro oo om mt th he er rm mo os st ta at ts s
A WTC-3 base unit can connect up to 7 room thermostats.
Two (2) types of room thermostat can be connected :
Analogue thermostat with unless power contact and/or
Wavin DRT-200 digital room thermostat
5.3.1. Analogue room thermostat
.
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Wi ir ri in ng g:
All wiring must comply with local electrical regulations and
specifications. Wavin recommends 18 AWG LVT or similar wire for
all thermostat connections. Strip all wires to 1/4 (6.3 mm) to
ensure proper connection to thermostat terminal blocks.
N
No ot te e:
Reversed polarity will not damage the room thermostat
C
CO ON NN NE EC CT TI IO ON N: Every room thermostat must be wired directly to
the WTC-3 base unit.
N
No ot te e:
Circuit number 6 is preset only for heating as a default
(Program 1 and Program 2, see pag 17 and following).
The First 5 circuits may be used to connect a dew point
sensor.
Out of use circuits must be connected in parallel with
the changeover input of the heating and cooling.
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Connection 7 Analogue room thermostats.

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5.3.2. Wavin DRT-200 digital room thermostat
W
Wi ir ri in ng g: :
All wiring must comply with local electrical codes and
specifications. Wavin recommends 18 AWG LVT or similar wire for
all thermostat connections. Strip all wires to 1/4 (6.3 mm) to
ensure proper connection to thermostat terminal blocks.
Note:
Reversed polarity will not damage the room thermostat
C
CO ON NN NE EC CT TI IO ON N: Room Thermostats can be connected to the
WTC-3 in all way (serial, chain, star parallel).
Out of use circuits - Connection in parallel

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5. .4 4D De ew wp po oi in nt t
5.4.1. Monitoring dew point via relative humidity
sensor of room thermostat
Every DRT-200 room thermostat has a built in relative humidity
sensor. Take care removing the white-yellow part on the
thermostat to make it works.
The WTC-3 base unit continuously receives the actual relative
humidity and room temperature data from every room thermostat.
The built in program can calculate the actual dew point tempera-
ture from these data in every room. When the dew point reaches
a predefined level, the base unit will adjust the room thermostat
to a higher temperature to prevent the
condensation. This gives the highest level of comfort and the
optimum cooling capacity.
5.4.2. Connect dew point sensor to DRT-200
room thermostat
An override dew point sensor should be connected directly to the
DRT-200 room thermostat.
Two (2) types of dew point sensor can be connected :
Dew point sensor for dry system
Dew point sensor for wet system
This sensor must be placed in the ceiling next to the inlet pipe.
The sensor has 10m of wire that can be connected directly to the
first and second input of DRT-200. The dew point sensor also
monitors condensation in addition to the built in relative humidity
sensor.
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5
5. .5 5C Co on nn ne ec ct ta ac ct tu ua at to or rs s
The WTC-3 has seven outputs to connect actuators.
Wavin actuators feature connectors for fast installation
which simply plug in the actuators to the appropriate
ports.
Note:
Connect only 230V and normally closed (NC)
type actuators.
Connect a maximum of three (3) actuators per
output.
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5. .6 6C Ch ha an ng ge eo ov ve er rh he ea at ti in ng ga an nd dc co oo ol li in ng g
m
mo od de e
Changing heating/cooling mode (two options):
D
DR RT T- -2 20 00 0
If the system is installed with a DRT-200 room
thermostat then the requested mode can be
changed at the master thermostat by pressing
the heating or cooling button.
A
An na al lo og gu ue er ro oo om mt th he er rm mo os st ta at t
If the system is installed with an analogue room
thermostat, a separate switch will need to be
connected to give an open/close contact to the
WTC-3 base unit.
N
No ot te e:
Heating status is an open contact.
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Connection drawing using Analog Room Thermostat

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17
The WTC-3 is equipped to control motorized zone valves
to changeover from heating to cooling mode and vice
versa. This function is used with a four-pipe system.
In a four-pipe system, each inlet and outlet requires a two
port motorised valve because of hydraulic reason
(balancing). All motorised valves are controlled by the
WTC-3.
The base unit has a default program function to prevent
unwanted temperature increase in the return flow pipe
system. During the changeover between heating and coo-
ling mode the WTC-3 closes the inlet and outlet motorized
valves, then waits ten minutes before opening the other
inlet and outlet motorized valves. This ten minute
presetting can be modify via the WTC-3 software
(1 — 16min).
N
No ot te e:
Connect only 230V type motorized zone valves

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5. .7 7E En ne er rg gy ys sa av vi in ng gm mo od de e/ /e ec co on no om my ym mo od de e
The WTC-3 base unit and DRT-200 room thermostat has
an Economy function. This function can reduce the room
temperature to a preset value.
A
An na al lo og gu ue et th he er rm mo os st ta at t
If the system is installed with analogue room thermostat
then a separate or one of the existing room thermostats
can be connected to the base unit. To activate the econo-
my function, a separate switch should be connected to
give an open/close contact to the WTC-3 base unit. When
the Economy mode is active, the TH Eco thermostat will
override all other room thermostat connected to the base
unit. Only this one thermostat will regulate every circuit.
D
DR RT T- -2 20 00 0
If the system is installed with DRT-200 room thermostat
then the requested mode can be selected at the master
thermostat by pressing the comfort or economy button.
The economy mode can be activated on every thermostat
or only the master, according to the presetting.
N
No ot te e:
Comfort status is an open contact.
In cooling mode Comfort/Economy switches and
temperature of TH-Eco will be ignored.

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66..CCoommppoonneennttssccoonnttrrooll
6
6. .1 1M Mi ix xi in ng gv va al lv ve ec co on nt tr ro ol l
The WTC-3 can regulate mixing valves to set and keep
under control the inlet water temperature for heating and
cooling.
The built in program can keep the requested temperature
within +/- 0.3 °C.
The WTC-3 uses the PI regulation to keep an accurate
temperature. The PI regulation decreases over control and
stopped the wave effect within the shortest time.
Note
Any type of mixing valve controlled by 0-10V can be used.
The default inlet temperature values for heating:
45 °C
The default inlet temperature values for cooling:
16 °C
Both values can be modified in the software according to
request.
The Wavin temperature sensor must be placing after the
mixing valve and attached directly to the pipe!
Design Manual
Heating and Cooling systems
Design Manual
Heating and Cooling systems
Note
Use only Wavin temperature sensor.
Note
In case of overheating ( 60 °C). the pump will stop to work
and consequently this will cause a mixing valve failure.
Temperature sensor
WTC-3 can control the inlet cooling water temperature
according to relative humidity.

W
avin Temp Manifold Installation Manualower
E-MAIL
i[email protected] www.wavincom.
TELEPHONE
[phone]
20
W
avin Temp Control Manualower
E-MAIL
[e-mail] www.wavincom.
TELEPHONE
[phone]
6
6. .2 2R Ro oo om mh hu um mi id di it ty yc co on nt tr ro ol lv vi ia a
d
de eh hu um mi id di if fi ie er r
With WTC-3 there is the possibility to control one or more
dehumidifiers. Two Programs (see page 22 and next for
more explanations) are available to do this:
P
Pr ro og gr ra am m2 2: Only one dehumidifier can be
controlled
P
Pr ro og gr ra am m3 3: More than one dehumidifier can be
controlled
P
PR RO OG GR RA AM M2 2
These informations are valid if we use tha Analogue
Thermosat to control the temperature in the room.
In areas where the relative humidity is higher then the
normal (e.g. close to the sea or a lake), a dehumidifier will
need to be installed. The dehumidifier can keep the
relative humidity value at an acceptable level so that
surface cooling installation will not suffer from
condensation.
The WTC-3 has an output to start and stop a dehumidifier
unit based on the relative humidity at the master room at
separately installed and connected humidity sensor.
The separately connected humidity sensor ( NOT WAVIN
product) can calculate the dew point from the actual
temperature and relative humidity.
If the calculated dew point temperature getting closer to
the preset inlet water temperature ( factory default 15 °C)
with 2.2 °C then the output 7 of WTC-3 is turn on.
The output 7 stay turn on until the calculated dew point
temperature will decrease with 2.2 °C under the preset
inlet water temperature.
P
PR RO OG GR RA AM M3 3
These informations are valid if we use the DRT-200 Digital
Thermostat to control the temperature and the humidity in
the room.
One DRT-200 can control more than one dehumidifier, and
one dehumidifier can be controlled by more than one
DRT-200.
Taking into consideration that Output 8 is for the Pump
(see page 18), 7 Outputs remain for the
connections of the dehumidifiers and actuators.
Consequently, if we increase the number of the
deuhimidifiers, the number of actuators which could be
connected will decrease.
For example, if we have 2 dehumidifiers, we will have 5
outputs for the connection of the actuators.
Design Manual
Heating and Cooling systems
Design Manual
Heating and Cooling systems