Watts WFC-03 HCM RF 230 User manual

wattswater.fr
WFC-03 HCM RF 230
Water Floor Heating and Cooling module
Installation manual

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USER GUIDE
GENERAL INFORMATION ............................................................................................................................... 3
Safety warnings and operating instructions.............................................................................................. 3
Application .............................................................................................................................................. 3
PRESENTATION .............................................................................................................................................. 3
Functions................................................................................................................................................. 3
Box content............................................................................................................................................. 3
First installation ........................................................................................................................................ 3
PRODUCT DESCRIPTION............................................................................................................................... 4
LED color meanings ................................................................................................................................ 4
Push button............................................................................................................................................. 4
DIP switch configuration .......................................................................................................................... 4
INPUTS / OUTPUTS........................................................................................................................................ 5
Power Supply .......................................................................................................................................... 5
Heating/cooling Input............................................................................................................................... 5
Pump Output........................................................................................................................................... 6
Humidity detection input .......................................................................................................................... 6
Dehumidifier output ................................................................................................................................. 6
Heating and cooling outputs.................................................................................................................... 7
External antenna...................................................................................................................................... 7
SYSTEM CONFIGURATION............................................................................................................................. 8
TROUBLE SHOOTING .................................................................................................................................... 9
TECHNICAL CHARACTERISTICS.................................................................................................................... 9
Dimensions & weight ............................................................................................................................... 9
DIRECTIVES................................................................................................................................................... 10

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1. General information
1.1 Safety warnings and operating instructions
This product should be installed preferably by a qualified professional. Subject to observation of the above terms, the manufacturer
shall assume the liability for the equipment as provided by legal stipulations.
All instructions in this Installation & Operation manual should be observed when working with the controller. Failures due to improper
installation, improper use or poor maintenance are voiding manufacturer liability.
Any attempt to repair voids the responsibility and the obligation to guarantee and replacement from the manufacturer. 2012/19/EU
(WEEE directive): Products marked with this symbol cannot be disposed of as unsorted municipal waste in the European Union.
For proper recycling, return this product to your local supplier upon the purchase of equivalent new equipment, or dispose of it at
designated collection points. For more information see: www.recyclethis.info
1.2 Application
The controller has been designed for use in residential rooms, office spaces and industrial facilities. Verify that the installation complies
with existing regulations before operation to ensure proper use of the installation.
2. Presentation
The WFC-03 HCM RF 230 is especially designed to control heating and cooling in combination with WFC-03 HC controllers.
The targeted application is thus 2 pipes multi zones water floor heating and cooling. This device is an option and only one module
is possible per installation. It should be installed near the heating and cooling sources whereas the WFC-03 6Z HC controllers
should be installed near the manifolds.
The device is an option with 3 main value proposals:
• Separate heating and cooling signal.
• Global dehumidifier control.
• Global Heating & cooling mode control.
2.1 Functions
It has integrated multiple functions:
• Wall mounted or mounted on DIN Rail.
• Push-in cable connections with strain relief.
• LED status indication and DIP switch for device setting.
• H&C input (230V and volt free signal).
• Humidity input (Volt free contact) or water temperature
measurement (Probe not supplied) for humidity detection.
• Dehumidifier output.
• Pump or boiler output (230V and volt free signal).
• Heating output and cooling output.
• Internal RF antenna, optional external antenna.
2.2 Box content
2.3 First installation
There are 2 ways to install the controller:
• Wall mounted using 2 screws
• Mounted on a DIN Rail

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3. Product description
3.1 LED color meanings (In Red)
3.3 DIP switch configuration (In Orange)
3.2 Push button (In Green)
• 10s press triggers the pairing process.
• 20s press triggers the device reset.
LED Meanings
Heat and Cool and RF Led
(Red/Blue/Green)
• Fix Red = Heating mode
• Fix Blue = Cooling mode
• Red/blue blinking = RF loss (In case of RF loss, the WFC-03 HCM RF 230
switches in Heating mode and triggers the pump)
• Green flashing = RF communication
Pump and Humidity and Error Led
(Red/Blue/Green)
• Red blinking = NTC error
• Blue blinking = Global humidity detection (In that case, the dehumidifier
is triggered)
• Fix Green = Pump is triggered
• Green/Blue blinking = Global humidity detection and pump activation
• Green/red blinking = Pump is triggered and NTC error
• Red/Blue/Green blinking = Global humidity detection and pump activation
and NTC error
DIP switch number Function Value (default: OFF) Configuration Description
DIP1 Humidity activation
OFF Disable
See 4.4 and 4.5
ON Enable
DIP2 H&C switch OFF 2 seconds See 4.2
ON 5 minutes
DIP3 H&C output mode OFF Demand See 4.6
ON Mode
DIP4 Humidity input
OFF Free contact input
See 4.4
ON NTC sensor

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4. Inputs / Outputs
4.1 Power Supply
4.2 Heating/cooling Input
Purpose:
This input allows switching the regulation mode for the system: Heating or cooling.
Source of the signal:
• A mechanical switch
• The Heat Pump
• A BT-WR02 paired on the BT-CT02 central unit as an ON/OFF device. This solution allows
getting a remote control of the H&C mode from the application.
Format of the signal:
The input could be free contact or live contact 230V.
The H&C mode is then propagate over all the system.
Only one device is the system should be able to select the H&C mode (Master H&C device). Other possible H&C switch signal
sources:
• BT-CT02 RF Central unit.
• H&C input on WFC-03 HC RF controllers.
• Digital thermostat configured as a Master H&C thermostat in manual or automatic mode.
The DIP switch on the WFC-03 HC RF controllers allows to select the device in charge of the H&C mode (Master H&C device).
The time before H&C switch is defined by the DIP2 (See 3.3):
• DIP2 = OFF. 2 seconds.
• DIP2 = ON. 5 minutes.
Mode Free contact Live contact
Heating Opened No signal
Cooling Closed 230Vac
Power
supply
Junction
earth

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4.3 Pump Output
There are 2 outputs:
• Live contact output (230Vac).
• Free contact output.
These outputs can be used to trigger:
• A zone valve.
• A pump.
• A boiler or heat pump.
The 2 outputs are triggered when there are a heating or cooling demand, which is sent by the WFC-03 HC RF controller to the
WFC-03 HCM RF 230.
The pump signal is always global, i.e. the pump is triggered when there is a heating or cooling demand within the system.
If a RF failure occurs, the pump is triggered all the time.
4.5 Dehumidifier output
When DIP1 = ON (See 3.3), the dehumidifier output (Free contact) is triggered in 2 cases:
• When the Humidity input is triggered (See 4.4).
• When the WFC-03 HC RF controller orders the dehumidifier.
4.4 Humidity detection input
When DIP1 = ON (See 3.3) the product manages a humidity detection input, with 2 possible types of signal
depending on DIP4 (See 3.3):
• Water temperature sensor (NTC 10kΩ): Require BT-D03 RF RH thermostat.
• A humidity contact sensor.
4.4.1 Humidity contact sensor
Format of the signal:
The input is a free contact
When humidity is detected by the sensor, the information is sent to the WFC-03 HC RF controller which manages the information.
Moreover the dehumidifier output is triggered.
4.4.2 Humidity contact sensor
The water temperature measurement is sent to all WFC-03 HC RF controllers to compute the dew point for humidity control in
cooling mode (Please refer to the leaflet of WFC-03 HC RF).
No Humidity Opened contact
Humidity detected Closed contact

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4.6 Heating and cooling outputs
The behavior of the outputs (Free contact) is dependent of the DIP3 (See 3.3):
• DIP3 = OFF. The heating/cooling output is activated when there is a heating or a cooling demand
in the installation.
• DIP3 = ON. The Heating or cooling output is triggered constantly following the mode of the
installation (heating or cooling).
In case of RF failure, the heating output is triggered all the time.
4.7 External antenna
The distance between 2 devices with internal antenna should be at least 50cm.
The controller embeds an internal antenna. If require, an external antenna can be connected to
improve the RF communication. It could be useful if the WFC-03 HCM RF 230 is installed inside a
metallic box. In that case, you need to install the external antenna outside the metallic box.
Please respect the mounting to optimize sensitivity and avoid any dysfunction.
Antenna must be installed:
• Outside the metallic box.
• In vertical position.
• And at least at 50cm of metallic parts.
Metallic box 50cm

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Device 1 Device 2 Remarks
Put the device in RF pairing mode (10s). By pressing for 5 seconds, the
controller goes in RF pairing menu.
By using and select zone 3
(Red led), press to enter in Pairing
with a slave device mode.
All LEDs are blinking green.
When link is completed, WFC-03 HC
RF returns to the RF pairing menu and
WFC-03 HCM RF 230 returns to normal
mode.
5. System configuration
The WFC-03 HCM RF 230 should be always paired to a WFC-03 HC RF controller, even if you are using a BT-CT02 RF.
There is always only one WFC-03 HCM RF 230 per installation.
BT-D03 RF
WFC-03 HC RFWFC-03 HCM RF 230
BT-A03 RF

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6. Trouble shooting
Trouble # Trouble Description Trouble shooting
Red / blue blinking
on Heat and Cool
and RF Led.
RF Issue.
The WFC-03 HCM RF 230 has lost
the connection with the WFC-03
HC RF controller.
Check distance between devices. If the device
is installed within a metallic box, use an external
antenna located outside the metallic box.
External antenna is also useful for a long distance
between devices.
Usage of an external antenna on the WFC-03 HC
RF and WFC-03 HCM RF 230 improves the RF
communication.
Usage of a repeater paired to the WFC-03 HC RF
may be required.
Red blinking on
Pump / Humidity
Led.
NTC error.
If DIP4 = ON, a water temperature
sensor should be connected on
Humidity input.
Check DIP4 setting and NTC.
7. Technical characteristics
WFC-03 HCM RF 230
Electrical protection Class II with functional earth
IP Protection IP30
Shipping and storage temperature -10°C to 50°C (14°F to 122°F)
Power supply 230 Vac ± 10% 50Hz
Output maximum load (5 outputs) Relay: 5A
Compatibility
• WFC-03 6Z HC RF 24
• WFC-03 6Z HC RF 230
• WFC-03 10Z HC RF 230
• WFC-03 10Z HC RF 230
7.1 Dimensions & weight
Weight: 0,820 kg
56 mm265 mm
90 mm

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8. Directives
Designation Description Link
Low Voltage Directive (LVD)
The Low Voltage Directive (LVD) (2014/35/EU) ensures that
electrical equipment within certain voltage limits provides a high
level of protection for European citizens, and benefits fully from
the Single Market.
2014/35/UE
Electromagnetic Compatibility (EMC)
Directive 2014/30/EU
The Electromagnetic Compatibility (EMC) Directive 2014/30/EU
ensures that electrical and electronic equipment does not
generate, or is not affected by, electromagnetic disturbance.
2014/30/UE
Restriction of the use of certain
hazardous substances Directive (RoHS)
2011/65/EU
Directive on the restriction of the use of certain hazardous
substances in electrical and electronic equipment. 2011/65/EU
Waste Electrical & Electronic Equipment
Directive (WEEE)
The WEEE Directive (2012/19/EU) aims to reduce the amount of
waste electrical and electronic equipment that ends up in landfill.
2012/1
9/EU
Ecodesign Commission Regulation Ecodesign requirements for local space heaters. 2015/1188
Radio Equipment Directive (RED)
2014/53/EU
The Radio Equipment Directive 2014/53/EU (RED) establishes a
regulatory framework for placing radio equipment on the market. 2014/53/EU

WFC-03HCMRF230-IOM-FR-W-UK-04-23-Rev.0 © 2023 Watts
Watts Electronics S.A.S.
B.P. N°10 - Z.A. des Tourettes • 43800 ROSIERES • France
Tél. [phone] • Fax. [phone]
[e-mail] • www.wattswater.fr
Watts contacts in Europe: https://wattswater.eu/watts/contacts/
The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding. Watts Industries reserves the right to carry out
any technical and design improvements to its products without prior notice. Warranty: All sales and contracts for sale are expressly conditioned on the buyer’s assent to Watts terms and
conditions found on its website at www.wattswater.eu Watts hereby objects to any term, different from or additional to Watts terms, contained in any buyer communication in any form,
unless agreed to in a writing signed by an officer of Watts.