Watts WFHC HCM 02 RF 230 User manual

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Water Floor Heating and Cooling module
WFHC HCM 02 RF 230
wattswater.eu
PPLIMWxxxxx

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USER GUIDE GB

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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
Application
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 WFHC HCM 02 RF 230 is especially designed to control heating and cooling in combination with WFHC 06Z 02 HC
RF or WFHC 10Z 02 HC RF 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 WFHC 06Z 02 HC RF or WFHC 10Z 02 HC RF 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
WFHC HCM 02 RF 230
B
GB

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3. PRODUCT DESCRIPTION
3.1 LED color meanings (In Red)
# Led
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 WFHC HCM 02 RF 230
switches in Heating mode and triggers the pump)
Green flashing= RF communication
Pump/Humidity/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 blinling: Pump is triggered and and NTC error
Red/Blue/Green blinking= Global humidity detection and pump activation and
NTC error
3.2 Push button (In Green)
5s press triggers the pairing process
10s press triggers the device reset.
3.3 DIP switch configuration (In Orange)
DIPswitch
number
Function
Value
(default: OFF)
Configuration
Description
DIP#1
Humidity
activation
OFF
Disable
See 4.4 and 4.5
ON
Enable
DIP#2
H&C switch
OFF 2 seconds
See 4.2
ON
5 minutes
DIP#3
H&C output
mode
OFF Demand
See 4.6
ON Mode
DIP#4
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.
Mode
Free contact
Live contact
Heating
Opened
No signal
Cooling
Closed
230Vac
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 WFHC 06Z 02 HC RF or WFHC
10Z 02 HC RF controllers
•Digital thermostat configured as a Master H&C
thermostat in manual or automatic mode.
The DIP switch on the WFHC 06Z 02 HC RF or WFHC
10Z 02 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 DIP#2 (See
3.3)
•DIP#2=OFF. 2 seconds
•DIP#2=ON. 5 minutes
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 WFHC 06Z 02 HC
RF or WFHC 10Z 02 HC RF controller to the WFHC HCM
02 RF.
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.
4.4 Humidity detection input
When DIP#1= ON (See 3.3) the product manages a
humidity detection input, with 2 possible types of signal
depending on DIP#4 (See 3.3):
•Water temperature sensor (NTC 10kΩ):
Require BT-D03 RF RH thermostat
•A humidity contact sensor
Humidity contact sensor
Format of the signal
The input is a free contact
No Humidity
Opened contact
Humidity detected
Closed contact
When humidity is detected by the sensor, the information is
sent to the WFHC 06Z 02 HC RF or WFHC 10Z 02 HC RF
controller which manages the information. Moreover the
dehumidifier output is triggered.
Water temperature sensor.
The water temperature measurement is sent to all WFHC
06Z 02 HC RF or WFHC 10Z 02 HC RF controllers to
compute the dew point for humidity control in cooling mode
(Please refer to the leaflet of WFHC 06Z 02 HC RF)

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4.5 Dehumidifier output
When DIP#1= 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 WFHC 06Z 02 HC RF or WFHC
10Z 02 HC RF controller orders the
dehumidifier
4.6 Heating and cooling outputs
The behavior of the outputs (Free contact) is dependent of
the DIP#3 (See 3.3):
•DIP#3=OFF. The heating/cooling output is
activated when there is a heating or a cooling
demand in the installation
•DIP#3=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 WFHC HCM 02 RF
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

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5. System configuration
The WFC HCM RF should be always paired to a WFHC 06Z 02 HC RF or WFHC 10Z 02 HC RF controller, even if you are
using a BT-CT02 RF. There is always only one WFC HCM RF per installation.
Device 1: WFHC HCM 02 RF 230
Device 2: WFHC 02 HC RF
Remarks
Put the device in RF pairing mode.
By pressing for 5 seconds, the
controller goes in RF pairing menu.
Bu 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, WFHC 02
HC RF returns to the RF pairing menu
and WFHC HCM 02 RF 230 returns
to normal mode.
6. Trouble shooting
Trouble #
Trouble
Description
Trouble shooting
Red/blue blinking
on Heat and Cool
and RF led
RF Issue
The WFC HCM RF has lost the
connection with the WFHC 06Z 02 HC
RF or WFHC 10Z 02 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 WFHC 06Z 02 HC RF
improves the RF
communication.
WFHC 02 HC RF
WFHC HCM 02 RF 230
BT-D03 RF
BT-A03 RF

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Usage of a repeater paired to
the WFHC 06Z 02 HC RF or
WFHC 10Z 02 HC RF may
be required.
Red blinking on
Pump/Humidity
Led
NTC error
If DIP#4=ON, a water temperature
sensor should be connected on Humidity
input.
Check DIP#4 setting and
NTC
6. TECHNICAL CHARACTERISTICS
WFHC HCM 02 RF 230
Electrical protection
Class II with functional earth
IP Protection
IP30
Shipping and storage
temperature
-10°C à 50°C (14°F à 122°F)
Power supply
230 Vac ± 10% 50Hz
Output maximum load (5
outputs)
Relay : 5A
Compatibility
•BT-A03 RF
•BT-D03 RF
•BT-DP03 RF
•WFHC 06Z 02 HC RF 24, WFHC 06Z 02 HC RF 230,
WFHC 10Z 02 HC RF 24, WFHC 10Z 02 HC RF 230,
•BT-CT02 RF
6.1 Dimensions & weight

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Weight= xxxxxx
7. 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

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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
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