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EHC-FH02

Eco EHC-FH02, EHC-FH03 Installation And User Manual

FHT 80b Wall Thermostat and FHT 8V Wireless Actuator
Installation and User Guide
Product Codes EHC-FH02 and EHC-FH03
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Intended Use! 3
Description and Function! 4
Safety Information! 7
Inserting / Replacing the Batteries on FHT 80b! 8
Control Panel! 9
Wall Mounting of the FHT 80b! 9
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1. Intended Use
The radio-controlled radiator thermostat set comprises of three components:
• the FHT 80b Wall Thermostat (heating control),
• the FHT8V Actuator (valve operating mechanism), and
• the FHT 80TF Door / Window Contact Sensor (sold separately).
The system is used for temperature control in individual rooms in which the heat that dissipates from radiators is controlled by reducing the flow of hot water in the heating system.
The FHT 80b heating control measures the room temperature by means of an integrated sensor and transmits the corresponding control data to up to eight FHT 8V valve operating mechanisms (i.e. max. 8 radiators per room)
The FHT 80b can analyze the status signals (window open/closed) of up to four FHT80 TF door/window contact sensors and, in order to save energy when a room is aired, automatically reduce the temperature down to a so­called ‘Window open’ temperature, when the room’s window is opened.
The FHT 80b also facilitates a bi-directional radio connection with the FHZ 1000 House Central Unit.
Any other use (e.g. in cooling systems, floor heating systems, etc.) is not permitted and may lead to severe damages.
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2. Description and Function
Compared with simple mechanical thermostats (a.k.a. TRVs), the radio­controlled radiator thermostat systems have a number of advantages:
• the split between the radiator-mounted valve operating mechanisms and the freely positionable operation and control units (e.g. the FHT 80b heating control which is part of the scope of supply) makes it possible to perform settings easily.
• the programming option makes it possible to adapt the system to the lifestyle of its users, so that the room is always comfortably warm when it is used. When the room is not used, the temperature may be reduced automatically to save energy, i.e. the often cumbersome manual opening and closing of heating valves is no longer required.
• the system is equipped with an integrated calcification protection. Once every week (time can be set) the valve operating mechanism opens and closes the valve to prevent blocking of the valve by lime deposits.
2.1.Operating principle
In the FHT 80b heating control, the room temperature is measured and compared to the desired temperature (set either by means of the time program or manually). The difference is used to calculate how far the valve has to be opened or closed to obtain the desired temperature. Using time interval of approximately two minutes, the radio commands are sent to the FHT 8V valve operating mechanism mounted on the radiator. This valve operating mechanism then reduces or increases the heat. Heating up of a room takes some time, depending on the size of the radiators. If the desired temperature is changed, the room temperature changes with a certain delay. Deviations between the desired value and the room temperature may also be caused by various disturbance variables, such as draughts, other sources of heat in the room, or an insufficient supply of heat from the heating boiler. Temperature measurement within the control is very exact (deviation <1*C). To avoid any unnecessary operation of the valve, e.g. when the room temperature changes temporarily because a door is opened, several measured values are averaged during the two minutes communication gap.
The heating control’s integrated receiver also allows the FHT 80b to receive the status signals from up to four FHT 80TF door/window contact sensors.
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Changes (‘Window open’ or ‘Window closed’) are signaled to the heating control within a time period of about 1 minute. This allows the heating control to adjust the temperature after an average of 30 seconds, in order to save energy when, for example, a room is aired.
2.2.Safety code
The radio signal is protected by a safety code consisting of two parts. This safety code protects the system against interference from other radio systems and ensures that several radio-controlled radiator thermostat systems can be operated separately in a household. Each part of the code comprises 100 setting options. This means that there are 10,000 different safety codes available. To ensure communication between the heating control and the valve operating mechanism/s the same safety code has to be set for all devices in a room.
To ensure communication between the heating control and the valve operating mechanism(s) the same security code has to be set for all devices in a room. A random security code is set by the manufacturer.
When supplied as a set (heating control and valve operating mechanism) the valve operating mechanism is preset to the heating control’s security code.
If you purchased the heating control and valve operating mechanism separately (or you want to use additional valve operating mechanisms for a heating control), then the security code has to be transmitted to each of the valve operating mechanisms. See section 9.4. or section 9.5.
The security code is also used for communicating with the FHZ 1000 central unit and the FHT 8W Heat Demand Relay.
The FHT 80TF door/window contact sensors are equipped with a randomly generated factory default code that cannot be changed. Since there are over 16 million different possible codes, changing the code of the door/window contact sensor is not necessary; duplication is virtually impossible.
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2.3.Information on the range
The transmission power is less than 10mW, much below that of a mobile phone which may have a transmission power 200 times as great. Adverse effects on sensitive people and animals are not to be expected.
The wireless radiator thermostat system uses the 868MHz range, which is also used by other radio services. Therefore devices that operate on the same or neighboring frequencies may restrict both its operation and its range.
The specified range of up to 100m (to the ‘FHT8V’ valve operating mechanism) or up to 300m (to the ‘FHZ1000’) is the free-field range, which means the range with visual contact between the transmitter and receiver. In practice, however, walls, ceilings, etc. between the transmitter and the receiver may affect and reduce the range.
Other causes of reduced ranges:
• All types of high-frequency interference
• Any buildings or vegetation
• Conductive metal parts that are located near the devices or within or near their transmission path, for example, radiators, metallised insulation glass windows, reinforced concrete ceilings, etc.
• Influence on the radiation pattern of antennas due to the distance from the transmitter or receiver to conductive surfaces or objects (also to human bodies or the ground)
• Broadband interference in urban areas that reduces the signal-to-noise ratio; the signal is no longer recognised due to this ‘noise’
• Interference radiation resulting from insufficiently shielded electronic devices, for example, operating computers or similar
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3. Safety Information
The warranty will lapse for damage due to non-compliance with these operating instructions. We shall not be held liable for any consequential damage or loss! We shall not accept liability for damage to property or personal injury caused by incorrect handling or non-compliance with the safety instructions. Any claim to warranty will lapse in such cases.
3.1.General
Do not use this product in hospitals or medical institutions. The product does only emit relatively weak radio signals. These radio signals could, however, lead to malfunctions in life-supporting systems. The same may possibly apply to other areas.
The product must only be used in dry indoor areas, it must be protected from moist and water.
The product is not a toy and must be kept out of the reach of children. For safety and licensing (CE) reasons, unauthorized conversion of and/or modifications to the product are not permitted.
Do not leave the packaging material lying around carelessly. Plastic film and/ or bags, polystyrene parts, etc. can be dangerous in the hands of children. Handle the product with care. It can be damaged through impact, blows, or by being dropped even from a low height.
3.2.Batteries and accumulators
• Keep batteries / accumulators out of the reach of children;
• Make sure to insert the batteries/accumulators with the correct polarity;
• Do not leave the batteries lying around in the open; there is a risk of them being swallowed by children or pets. If swallowed, immediately contact a doctor.
• Leaking or damaged batteries/accumulators may cause burning if they come into contact with the skin. For this reason you should use suitable protective gloves when handling batteries.
• Do not short-circuit batteries/accumulators, and do not throw batteries/
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accumulators into a fire. There is a risk of explosion!
• Do not disassemble batteries / accumulators!
• Do not recharge normal batteries. There is a risk of explosion!
• In case of longer periods of non-use (e.g. during storage) remove the inserted batteries/accumulators to avoid damage by a leaking battery/ accumulator.
4. Inserting / Replacing the Batteries on FHT 80b
• Slide down and remove the wall holder on the back of the heating control.
• Slide down and remove the cover of the battery compartment (in direction of the imprinted arrow on the cover).
• Insert two LR6 (Mignon/AA) batteries; pay attention to the correct polarity. Look into the battery compartment for an illustration of the correct polarity (make sure to insert the batteries correctly to avoid damage to the electronic components of the heating control).
We recommend to use high-quality alkaline batteries only. Operation of the heating control using accumulators or conventional zinc-carbon batteries is possible, however the operating time and radio range of the heating control will be reduced.
• Close the battery compartment.
• The heating control performs a short display test. After the display test, you have to set date and time).
• If the battery symbol (“
h¬IS¬DISPLAYED¬ON¬THE¬,#¬DIS-
“) is displayed on the LC display, the battery voltage is low and the batteries should be replaced as soon as possible. The same applies, if the radio range decreases or if data are no longer displayed on the LC display.
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5. Control Panel
7. Control panel
Figure 1
A Scroller for settings
B ‘FUNKTION’ button
C ‘PROG’ button
D ‘
’ button
E LCD
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6. Wall Mounting of the FHT 80b
6.1. Choosing an appropriate mounting location:
Make sure to choose an appropriate location for the mounting of the FHT 80b heating control. This has to meet the following requirements:
• chose central position in the room where the temperature is to be controlled;
• easy access for convenient operation;
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• mounting at eye level for easy reading of the display;
• no mounting on a badly insulated outer wall;
• no direct sunlight;
• no interference from heat sources such as radiators, TV sets, lamps, refrigerators,etc;
• no mounting next to a window;
• greatest possible distance to metal objects to avoid any unnecessary reduction of the operating range
6.2. Mounting the wall holder
Proceed as follows to mount the wall holder:
• Remove the wall holder on the back of the heating control, slide it down for this;
• Place the wall holder vertically against the wall with the round side pointing up (see picture);
• Mark the positions of the bores through the two slotted holes;
• Depending on the type of wall drill two 6 mm holes and insert suitable dowels. When drilling the bores and
tightening the screws make sure not to damage any power lines or gas or water pipes, etc.!
• Fix the wall holder using the enclosed screws. Pay attention that the two recessed slotted holes for the screws point in your direction;
• If not already done so, insert the batteries into the heating control before you slide the heating control on the wall holder;
• Sliding of the heating control on the wall holder is now possible from the top.
6.3.Setting the Date and Time
• If the display is protected by a foil, remove it;
• If batteries have not been inserted yet, proceed as de- scribed in chapter 4 to insert them. After inserting the batteries an automatic display test is per­formed (all segments and displays of the LC display are displayed for several seconds). After the display test you may set the year, the month, the day, the hours and the minutes on the heating control.
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Use the selection wheel to change the displayed values. To confirm your selection, briefly press the “PROG” key.
• After inserting the batteries the year is displayed:
Use the selection wheel to set the desired year. To confirm your setting, briefly press the “PROG” key.
• The month is displayed:
Use the selection wheel to set the desired month, and con- firm your setting again by pressing the “PROG” key.
• The day is displayed:
Use the selection wheel to set the desired day, and confirm your setting by pressing the „PROG” key.
• The hours are displayed:
Use the selection wheel to set the desired hour, and confirm your setting by pressing the “PROG” key.
• The minutes are displayed:
Use the selection wheel to set the desired minutes, and confirm your setting by pressing the “PROG” key.
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• The LCD then displays ‘Sync’, the current security code and ‘120’. The heating control counts down from ‘120’ in steps of 1 second and then returns to the normal operating mode.
During this time the heating control cannot be operated. The heating control now synchronizes its operation with the valve operating mechanisms.
Please make a note of the displayed security code on a slip of paper and write the name of the room, in which the heating control is installed, underneath the code. You will need this information if you intend to register the heating control to a ‘FHZ1000’ home radio central unit.
• Slide the heating control onto the wall holder from above until it snaps into place. See figure on the right.
7. Mounting of the FHT 8V Valve Actuator
7.1. Remove the old Thermostatic Head
• Remove the old mechanical thermostat;
• If necessary, use multi grip pliers to loosen seized screws by turning them counterclockwise (see picture on the right).
7.2. Insert the batteries in the valve operating mechanism
• Remove the battery compartment cover of the valve operating mechanism by sliding it down.
• Insert two AA batteries into the battery compartment. Make sure to insert the batteries with the correct polarity, see illustration in the battery compartment
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