OJ Electronics WLM3, WLTA3, WLTD3, WLCT3 Installation Manual

67345 02-15 (HKT)

WLDT3

www.ojelectronics.com

Installation Manual

WLM3

WLCT3

WLTD3

WLTA3

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)

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

* ON = Actuator output no. 1 is used as an ON/OFF signal for a dehumidiﬁer

WLM3 Underﬂoor Heating Controller

BR1025A09a

WLOC3

COOLING SWITCH

-GB

Wiring diagram WLM3-FS

Continuously PE only

BR1025A09a

BR1025A11a

345

-GB

Top PCB

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

-GB

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

BR1025A07a

WLOC3

COOLING SWITCH

-GB

Wiring diagram WLM3-BA

Continuously PE only

BR1025A07a

WLM3 underﬂoor heating controller

* ON = Actuator output no. 1 is used as an ON/OFF signal for a dehumidiﬁer

BR1025A11a

345

-GB

Top PCB

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

-GB

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

BR1025A08a

WLOC3

-GB

Wiring diagram WLM3-AO

Continuously PE only

BR1025A08a

WLM3 underﬂoor heating controller

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

BR1025A02a

4567

OJ Waterline Master

WLM3 BA

BR1025A02a

BR1025A01a

OJ Waterline Add-On

9 10 11 12 13 14

WLM3 AO

BR1025A01a

BR1025A03a

1 23

4 5867

OJ Waterline Master

WLM3 FS BMS

BR1025A03a

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

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

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

The X-OUTPUT relay is volt free as shown in ﬁg 6a. If the relay is required to be used as an L & N switch, link the mains L terminal to the C1 terminal, then connect the L terminal of the device to the C2 terminal and the N terminal of the device to the mains N terminal.

Boiler pump

Where a primary boiler pump is to be switched on by the master, the relay output can be used for this purpose. The relay will be activated 10 seconds after the UFH circulating pump has started.

High-limit zone valve

This function is used where additional protection is required to prevent boiler water from entering the underﬂoor system when the system is OFF or when the supply water temperature exceeds 65°C. An additional sensor (ETF-522), referred to as ‘Application Sensor’ in ﬁg. 6d, is required and a zone valve must be connected via the X-OUTPUT (see example in ﬁg. 6c).

Cooling device/module

The relay output can be used to provide a volt-free signal to a heat pump or to a K-MOD switching module where a chiller is utilized to provide cooling water. The relay is ON when there is a cooling demand. (For further information, see “Using cooling functions”.)

Cooling device/module, alternative:

The relay output is always ON in cooling mode and OFF in heating mode. (For further information, see “Using cooling functions”.)

Dierential thermostat

The relay output can be used to enable use an alternative energy source, e.g. solar energy. In this case, the supply water sensor must be supplemented with an additional sensor (ETF-522), referred to as ‘Application Sensor’, which is used to monitor the temperature in the water storage cylinder of the alternative energy source. If the system detects (via the Application Sensor) that this temperature is more than 3°C higher than the supply water temperature, it activates the X-relay to select the alternative energy source via a valve and/or pump.

Installation

BR1025A10a

-GB

OFF

Common UHF-PUMP

Commission mode

X-RELAY

Learn mode

Boiler test

Install mode

WLM2 Compatible

ON / OFF Control

Fig. 6b

BR1025A10a

Fig. 6c

BR965A40a

BR1025A19a

WLM3-BA/FS MASTER

-GB

BOILER

MANIFOLD

Supply water sensor (if fitted)

Application Sensor (High limit sensor)

High limit zone valve

Bypass

Fig. 6d

BR1025A19a

Thermal actuators are ﬁtted to the underﬂoor manifolds and control the water supply through the various loops. The voltage of the thermal actuators, 230V or 24V, must correspond that of the master. WLM3-xBA masters are for 230V thermal actuators, while WLM3-xFSmasters/add-on modules are for 24V thermal actuators. Up to 8 dierent zones can be controlled by the master. Connect the thermal actuator(s) on the loop(s) for each zone to the corresponding terminals on the master. Thermal actuators for zone 1 must be connected to Output 1 terminals, thermal actuators for zone 2 must be connected to Output 2 terminals and so on.

Guideline

More than one thermal actuator can be connected to the terminals of a single output, provided that the heads are to be controlled by the same room sensor/controller. Connect the brown wire to the L terminal, and the blue wire to the N terminal. When installation is complete, check that the room sensor in, for example, room (zone) 1 operates the thermal actuator(s) on the manifold intended for that room. If the actuators appear to be in the wrong position on the manifold, it may be simpler to interchange them on the manifold rather than reconnect them on the master.

BR1025A12a

COOLING SWITCH

-GB

Timer W/volt free contacts. Open contacts for night setback.

Ext. Switch

Fig. 8

From the factory, the master is supplied with a jumper in the switch/timer IO terminals. The current operating setpoint of the master can be forced into night temperature by breaking this signal via an input from an external switch or timer. The input must be a volt-free switch, and will need to open the circuit for night temperature and close the circuit for day temperature. When the external switch or timer is used to switch to night setback, this will override any time settings in the WLCT3 room controller, including any room sensors that are part of a group allocated to that room controller.

External switch (timer) for night setback

Installation

Thermal actuators (thermoheads)

BR965A16a

Fig. 7

Room sensors - bus connection

Only OJ units which are suitable for two-wire communication can be used.

Standard installation cable of minimum 2 x 0.25 mm² can be used. Units can be connected in conventional star formation or in bus mode (daisy chain).

The master has 4 sets of terminals marked SENSOR/CONTROLLER BUS that can be used for connecting the 2-wire signal cable from the unit.

There are 4 identical sets of terminals for convenient installation. Any unit can be connected to any pair of terminals. The total length of the 2-wire system can be up to 300 m with a maximum length of 100 m between any two units. For further information, see the table below.

Remember to connect + to + and – to – .

Table: Length of cable

Standard cable Max. cable length from master to room

controller/sensor with display

Max. cable length from master to room controller/sensor without display

≥0.25 mm

Up to 100 m * Up to 300 m

≥0.50 mm

Up to 200 m * Up to 300 m

≥0.75 mm

Up to 300 m * Up to 300 m

*) Up to 300 m if operation without backlight is acceptable.

Installation

Fig. 9a

BR965A18a

SENSORS/CONTROLLERS CONNECTED IN STAR

Fig. 9b

SENSORS/CONTROLLERS CONNECTED IN BUS MODE

(DAISY CHAIN)

Fig. 9c

SENSORS/CONTROLLERS CONNECTED IN STAR SENSOR/CONTROLLERS CONNECTED IN BUS MODE

(DAISY CHAIN)

Setting the channel

Each room sensor can be set to operate a speciﬁc output which in turn controls a thermal actuator on the manifold. A selector can be accessed under the front cover of the unit where the number of its output (i.e. its channel number) can be set with a screwdriver (see ﬁg. 10). Up to 14 channels can be set on the selector, and there are two auxiliary channels (see later). A WLM3 master has 8 outputs. It can be connected with an add-on slave module with an additional 6 outputs, creating a system with 14 individual zones.

Please note that channels 10 to 14 are marked as A through E on the selector,

A room sensor set for channel 1 will activate the thermal actuator connected to output 1 on the master. The channel number can be set before power is connected to the system. The channel set on the room sensor can be changed afterwards if needed. If two room sensors are placed in the same room and set to the same channel, temperature will be controlled by the average of the temperature recorded by both units.

Channel 0:

Each Room sensor is delivered with the switch in position 0. It must therefore be set to operate correct channel output. Channel 0 can also be used for a room controller which is only used to control a group (area) of room sensors without actually controlling the room in which it is installed (e.g. a controller in the kitchen which is only used to control sensors located in other rooms). Setting the room controller to channel 0 means that times and temperatures must be set on the WLCT3 for the group (area). The WLCT3 will not, however, control a speciﬁc output itself.

Channels 1..14:

A room sensor set for Ch1 will activate the thermal actuator connected to output 1 on the master. If several room sensors are set to the same channel number, heating will be controlled in the following way:

- Actual room temperature will be calculated as an average.

- The room temperature setpoint will be calculated as an average.

- If ﬂoor sensors are connected to the room sensors: The lowest value of any ﬂoor sensor is used as the minimum limit temperature. The highest value of any ﬂoor sensor is used as the maximum limit temperature.

Channel 15 (position F on the switch): Party and holiday function. Special function. “Special Features” for further instructions.

Testing the system: See “Guidelines and Special Features – Power-up recommendations”.

Installation

Fig. 10

BR1026A07a

Jumper

-GB

BR1026A07a

BR1026A09a

Channal selector

-GB

Jumper

Button learning mode

Learning mode button

BR1026A09a

Room sensors - wireless setup

WLxx3-29 wireless room sensors/controllers must be paired with a WLM3 master for wireless communication.

To achieve this:

1. On the master, switch on DIP-3 to activate learning mode.

2. Initialize all wireless room controllers/sensors:

- Initialize analogue room sensors (WLTA3, WLTD3 and WLTM3) by removing the plastic battery pull

tab or pressing the internal initialization button (learning mode button) until a beep is heard.

- Initialize digital room controllers/sensors (WLCT3 and WLDT3) by pressing the pinhole button

(learning mode button) beside the clock or I symbol until a beep is heard.

When communication with a room controller/sensor has been established, the corresponding channel LED on the master will light up.

3. Switch o DIP-3 to deactivate learning mode.

Fig. 11a

Fig. 11b

Installation

Supply water sensor

This feature, which limits supply water temperature, is available on full system masters, WLM3-xFS. The supply water sensor should be connected directly to the master via the terminals marked Supply Sensor. A temperature sensor of type ETF-522 must be used. The sensor should be placed on the supply water pipe to the underﬂoor heating system. If a sensor is installed in a system without a weather compensation module (WLOC3), the master will maintain the design supply water temperature. The factory default setting can be changed via the display. If a weather compensation module (WLOC3) is added to the system, the master will vary the supply water temperature setting according to the outdoor temperature. A standard factory-programmed compensation curve is used for this purpose. If needed, the curve can be changed, see separate USER MANUAL, MASTER TYPE WLM3.

Mixing valve actuator control

A mixing valve actuator can be controlled by digital WLM3-xFS masters.

The actuator must be 24V AC powered (max. 6VA) and positioned via a 0-10V DC signal. It should be conﬁgured so that it closes the valve if there is no heating demand (0V DC signal). If required, the control signal can be reversed to 10-0V via the master's menu system.

Control action of the mixing valve actuator is P + I, and the parameters can be changed if required in the master's menu system.

Please contact your supplier for further instructions.

Installation

Supply water sensor and mixing valve

Fig. 12b

BR965A39a

Fig. 12a

BR965A19b

Interconnection of WLM3 products

Interconnections

* Although these connections are not

necessary, they are permitted

NOTE: The illustration shows the four internal RJ14 connectors of the WLM3 master.

The WLM3-xAO add-on module has only connectors points 3 and 4.

BR965A46a

For easy installation, interconnections between master modules, master and add-on modules, and master and wireless receivers are made with pre-wired plug-in connectors (RJ14). For connecting WLM3 add-on modules to WLM3 masters, a plug-in connector is provided with the add-on module. Similarly, a WLRC3 wireless receiver is connected to a WLM3 master using the plug-in connector provided with the receiver. For connecting a WLM3 master to another master in a network, a plug-in connector kit (WLM-NET) is available. CAT5 cable should always be used. If a connector kit is not used, it is possible to connect masters using standard RJ14 connectors. In this case, ensure that terminal 1 is connected to terminal 1 at the other end, and so on. The same type of connection can be used from a master to an AO module.

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OJ Electronics WLM3, WLTA3, WLTD3, WLCT3 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual