OJ Electronics WLM3 User manual

© 2015 OJ Electronics A/S
67345 02-15 (HKT)
WLDT3
www.ojelectronics.com
Installation Manual
WLM3
WLCT3
WLTD3
WLTA3

© 2015 OJ Electronics A/S
2
CONGRATULATIONS
Congratulations with you new control system for underfloor
heating and cooling.
The control system has been developed to provide a temperature
control system for room heating and cooling, integrating the switching
of primary heating and cooling sources with the control of water
temperature and mixing devices.
This ensures the best possible comfort conditions and also reduces
energy consumption.
Highlights of the system (depending on the units connected):
:: Heating and cooling control for true comfort
:: Humidity sensor to prevent condensation on floors
:: Energy saving comfort with adaptive function
:: Area control for easy operation
:: Flexible installation with wired and wireless connection
:: Network communication for large applications
:: Easy installation with plug and lead connections
:: Outdoor temperature compensation (optional)
:: Smart access with OJ FMSTM Gateway
for FS Master (optional)

© 2015 OJ Electronics A/S
3
CONTENTS
INSTALLATION MANUAL
WLM3 Underfloor Heating Controller............................................. 4
Description ......................................................................................... 7
Product programme ........................................................................... 7
Overall system configuration.............................................................. 8
Installation......................................................................................... 9
Electrical installation .......................................................................... 9
Boiler demand (heat source) ............................................................. 9
Pump output .................................................................................... 10
Free relay function (X-OUTPUT) ....................................................... 10
Thermal actuators (thermoheads) .................................................... 12
External switch (timer) for night setback .......................................... 12
Room sensors - bus connection ..................................................... 13
Setting the channel........................................................................... 14
Room sensors - wireless setup........................................................ 15
Supply water sensor and mixing valve............................................. 16
Interconnection of WLM3 products.............................................. 17
Interconnections............................................................................... 17
Special functions............................................................................ 18
Creating a network ........................................................................... 18
Using cooling functions.................................................................... 19
Radiator mode.................................................................................. 20
2-step mode..................................................................................... 20
Hot water mode................................................................................ 21
Commissioning mode ..................................................................... 22
Replacing units............................................................................... 23
Replacing a faulty room controller/sensor ....................................... 23
Guidelines and special features.................................................... 24
Power-up recommendations............................................................ 24
Factory default settings.................................................................... 25
Error indication ................................................................................. 26
Special features.............................................................................. 28
Temperature and control .................................................................. 28
Replacing old masters...................................................................... 29
Temperature control method ............................................................ 29
Emergency program....................................................................... 29
Valve and pump exercising............................................................ 30
Certifications................................................................................... 30
Disposal and recycling................................................................... 30
Technical specifications ................................................................ 31
Waterline Add On Module - Type WLM3-xAO.............................. 33
Overall system configuration ............................................................ 33
Technical specifications ................................................................... 33
Waterline Outdoor Compensation Module - Type WLOC3 ......... 34
Introduction ...................................................................................... 34
Installation ........................................................................................ 34
Bus connection ................................................................................ 34
Technical specifications ................................................................... 34
Waterline Wireless Receiver - Type WLRC3 ................................ 35
Connection of receiver to master ..................................................... 35
Position............................................................................................. 35
Master .............................................................................................. 35
Setting up the system ...................................................................... 35
Technical specifications ................................................................... 35
Waterline Room Controller - Type WLCT3 ................................... 36
Introduction ...................................................................................... 36
Installation ........................................................................................ 36
Getting started.................................................................................. 36
Everyday use of the room controller ................................................ 39
Programming 4-event times and temperatures................................ 40
Advanced settings and read-outs .................................................... 41
Reset to factory settings - room controllers..................................... 46
Radiator Mode.................................................................................. 47
2-step mode..................................................................................... 47
Hot water mode................................................................................ 47
Batteries ........................................................................................... 47
Technical specifications ................................................................... 47
Waterline Room Sensor with Display - Type WLDT3 .................. 48
Introduction ...................................................................................... 48
Installation ........................................................................................ 48
Getting started.................................................................................. 48
Everyday use .................................................................................... 49
Advanced settings and read-outs .................................................... 50
Batteries ........................................................................................... 50
Waterline Room Sensors - Type WLTx3 ...................................... 51
Introduction ...................................................................................... 51
Installation ........................................................................................ 52
Setting room temperature ................................................................ 53
Setting room sensor operating mode............................................... 53
Batteries (wireless)............................................................................ 54
Technical specifications ................................................................... 54
Floor Limit Sensor - WLCT3, WLDT3 and WLTD3........................ 54

© 2015 OJ Electronics A/S
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* ON = Actuator output no. 1 is used as an ON/OFF
signal for a dehumidifier
WLM3 Underfloor Heating Controller
LNLN
C1 C2
B1 B2
BR1025A09a
© 2015 OJ Electronic A/S
WLOC3
COOLING
SWITCH
-GB
Wiring diagram WLM3-FS
Continuously
PE only
BR1025A09a
BR1025A11a
© 2015 OJ Electronic A/S
910
12345678
-GB
Top PCB
ON
OFF
Common UHF-PUMP
Commission mode
X-RELAY
Learn mode
Boiler test Install mode
WLM2 Compatible
ON / OFF Control
String
number
(1-F)
Unit
number
(1-9)
BR1025A11a
BR1025A10a
© 2015 OJ Electronic A/S
910
-GB
ON
OFF
Common UHF-PUMP
Commission mode
X-RELAY
Learn mode
Boiler test
Install mode
WLM2 Compatible
ON / OFF Control
BR1025A10a
To control X-OUTPUT (X-relay)
for:
DIP-5 DIP-6 DIP-7
Boiler pump OFF OFF OFF
High-limit zone valve ON OFF OFF
Cooling device/module OFF ON *
Cooling device/module,
alternative
ON ON *
Differential thermostat OFF OFF ON

© 2015 OJ Electronics A/S
LNLN
C1 C2
B1 B2
BR1025A07a
© 2015 OJ Electronic A/S
WLOC3
COOLING
SWITCH
-GB
Wiring diagram WLM3-BA
Continuously
PE only
BR1025A07a
5
WLM3 underfloor heating controller
* ON = Actuator output no. 1 is used as an ON/OFF
signal for a dehumidifier
BR1025A11a
© 2015 OJ Electronic A/S
910
12345678
-GB
Top PCB
ON
OFF
Common UHF-PUMP
Commission mode
X-RELAY
Learn mode
Boiler test Install mode
WLM2 Compatible
ON / OFF Control
String
number
(1-F)
Unit
number
(1-9)
BR1025A11a
BR1025A10a
© 2015 OJ Electronic A/S
910
-GB
ON
OFF
Common UHF-PUMP
Commission mode
X-RELAY
Learn mode
Boiler test
Install mode
WLM2 Compatible
ON / OFF Control
BR1025A10a
To control X-OUTPUT
(X-relay) for:
DIP-5 DIP-6 DIP-7
Boiler pump OFF OFF OFF
High-limit zone valve ON OFF OFF
Cooling device/module OFF ON *
Cooling device/module,
alternative
ON ON *
Differential thermostat OFF OFF ON

© 2015 OJ Electronics A/S
LNLN
BR1025A08a
© 2015 OJ Electronic A/S
WLOC3
-GB
Wiring diagram WLM3-AO
Continuously
PE only
BR1025A08a
6
WLM3 underfloor heating controller

© 2015 OJ Electronics A/S
7
The WLM3 underfloor heating controller is suitable for connecting multiple room controllers/sensors and
electric actuators (thermoheads) for an underfloor or radiator-based heating system.
Only OJ room controllers/sensors type WLxx3 that are prepared for 2 wire or wireless communication
can be used. For information on previous generations, see “Special Features - Replacing old masters”.
Description
Product programme
Product Thermoheads Type
Master for 8 zones 230V AC WLM3-1BA (basic system)
Master for 8 zones with display 230V AC WLM3-1FS (full system)
Master for 8 zones 24V AC WLM3-3BA (basic system)
Master for 8 zones with display 24V AC WLM3-3FS (full system)
Add-on module for 6 zones 230V AC WLM3-1AO
Add-on module for 6 zones 24V AC WLM3-3AO
WLM3 underfloor heating controller

© 2015 OJ Electronics A/S
BR1025A02a
© 2015 OJ Electronic A/S
345678 12
OJ Waterline Master
WLM3 BA
TM
BR1025A02a
BR1025A01a
© 2015 OJ Electronic A/S
OJ Waterline Add-On
9 10 11 12 13 14
WLM3 AO
TM
BR1025A01a BR1025A03a
© 2015 OJ Electronic A/S
1234 5 86 7
OJ Waterline Master
WLM3 FS BMS
TM
BR1025A03a
8
Each master module is capable of controlling 8 heating zones, each of which may use one or more
loops of piping, with one or more thermal actuators.
These zones are referred to later in this manual as channels 1 to 8. If more than eight zones are to be
controlled, it is necessary to install an add-on (AO) module, which provides another six outputs. The
AO module then controls channels 9 to 14.
Overall system configuration
Green: Power supply connected
Red: Night setback active
Red flashing: Error
X-OUTPUT function active (see “Free relay function (X-OUTPUT)”).
Secondary UFH pump running
Boiler enabling signal active
1..8 Zones 1 to 8, indicating channel is active
Type WLM3-xBA
Type WLM3-xFS
Type WLM3-xAO
WLM3 underfloor heating controller

© 2015 OJ Electronics A/S
9
Attach the WLM3 master to a suitable wall. It will generally be convenient if the unit is situated within 0.8
m of the manifold, as most thermal actuators are supplied with 1 m cable. Cables can be run across the
surface to the terminals using either the cable releases in the cover or by pressing out the cable entries
in the lower part of the cover.
PLEASE ENSURE THAT ALL WIRING IS CARRIED OUT IN ACCORDANCE WITH LOCAL
ELECTRICAL REGULATIONS.
When wiring is completed, fit the cover on the master using the screws provided.
Mains supply
WLM3 requires a 230V AC mains supply connected to the terminals marked L, N, & PE
(Continuously PE only)
Electrical installation
Boiler demand (heat source)
The master has a volt-free relay output that can be used to control a boiler/heat pump or to open
a motorised valve.
A) To control a heat source that requires switching of the live supply, take a link from L (230V) to
the terminal marked BOILER - B1. Connect the heat source L to the terminal marked BOILER –
B2. Connect the heat source N terminal to the N terminal on the master, and the heat source PE
to the master terminal PE (see fig. 4A).
B) To control a heat source that has a pair of dedicated terminals for remote switching (e.g. by a
room sensor), connect these terminals to the terminals marked B1 and B2 on the master. B1 and
B2 are “volt free” terminals and can therefore be used for either a 230V AC or a 24V AC circuit
from the heat source.
BR965A13a
Fig. 3
Installation
Fig. 4a
BR965A14a

© 2015 OJ Electronics A/S
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C) To control a motorised valve
Many motorised 2-port spring return valves have wires coloured BROWN and BLUE for power
connections. In this case, BROWN must be connected to terminal B2 under the heading
BOILER and BLUE must be connected to terminal N on the master. Then link the L (230V)
terminal to the terminal marked BOILER - B1. The boiler relay will be energised after a delay of
10 seconds after the start of the main pump.
Basic versions without display. Type WLM3-xBA.
The boiler relay will stop if no heat is demanded by the room sensors.
Versions with display. Type WLM3-xFS.
These units have supply water temperature control. The boiler relay will switch ON once the
control valve has opened 20% and will remain ON for as long as a heat demand exists.
The master has an output for the underfloor circulating pump (secondary pump). The output will be
energised after a 180-second delay whenever any room sensor connected to the system calls for
heat. The delay allows time for the thermal actuator to start opening.
The 230V AC pump can be connected directly to terminals L and N under the heading SEC. UHF
PUMP . Connect the pump PE (earth) terminal to the PE (earth) terminal on the master. Maximum
pump load must not exceed 4 amps, 230V at start up. There is an overrun period of 1 minute after
heat is no longer demanded by the room sensor.
Delay times: Secondary UHF pump 180 sec.
X-OUTPUT (configured as main pump) 190 sec.
Pump output
Free relay function (X-OUTPUT)
All WLM3 masters have a relay which can be
utilized for a number of dierent purposes.
The relay is a volt-free output and is positioned
on the PCB as shown in the drawing.
The function of the relay is determined by the
DIP-switch settings.
The functions that the relay can control, and
the corresponding DIP-switch settings, are as
follows:
Installation
Fig. 4b
BR965A33a
Fig. 5
BR965A15b
Fig. 6a
BR965A15b
To control X-OUTPUT for: DIP-5 DIP-6 DIP-7
Boiler pump OFF OFF OFF
High-limit zone valve ON OFF OFF
Cooling device/module OFF ON *
Cooling device/module,
alternative
ON ON *
Differential thermostat OFF OFF ON
* ON = Actuator output no. 1 is used as an ON/OFF signal
for a dehumidifier