Summary of VAUFHTC
Page 2: User Manual
1 user manual 1. Product description - area of use. . . . . . . . . . . 2 2. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Explanations of the symbols in display . . . . . . 5 4. First time the thermostat is turned on. . . . . . . 5 5. Operation of the thermostat. . . . . ...
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2 1. Product description – area of use thermostat for regulating underfloor electric heating cables, temperature range within +5 to +40 °c (default). Ref 446174 is programmable, and regulate the room or floor temperature automatically. The thermostat can operate in two modes, constant temperature mo...
Page 4: 2. Technical Data
3 with an external sensor which should be placed (embedded) into the floor between two heating cable loops, near the floor surface. Temperature can be regulated by the floor sensor or the room sensor. A combination mode is also available where both sensors are used. The floor sensor can then be used...
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4 maximum load 16a（approx. 3600w at rated voltage) switch (on/off) electronic temperature range from +5°c to +40°c (+41°f to +104°f) (default) designed working temperatures 1-50 °c (room sensor) for sensors 1-80 °c (floor sensor) dimensions 84x84x40mm(25 mm socket) encapsulation ip 21 length floor s...
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3. Explanation of symbols in display 5 clock (*) measured, or set temperature if “set” is shown. Room sensor (*) * these symbols are only shown if the function/state is active. 4. First time the thermostat is turned on when the ref 446174 is powered on for the first time the following will be shown ...
Page 7: Monday - Friday:
6 the thermostat is in constant temperature mode. If switched to event mode the following predefined program will start running: monday - friday: start time for normal operation (morning) 06.00 temperature 21°c start time for day saving operation 09.00 temperature 16°c start time for evening operati...
Page 8: Saturday - Sunday:
7 saturday - sunday: start time for normal operation (morning) 08.00 temperature 21°c day saving operation(deactivated by default) -- .-- temperature -- °c evening operation(deactivated by default) -- .-- temperature -- °c start time for night saving operation 22.00 temperature 16°c for adjusting se...
Page 9: 5.2. Event Based Mode
5.1. Constant temperature mode the display will show the sensor in use and the temperature (or the set temperature according to settings, see section 6.1 and sub-setting 12:df default display). The set temperature can be adjusted by the user by pressing the up and down buttons. 5.2. Event based mode...
Page 10: For Monday To Friday:
In this mode the display will show the sensor in use, the clock, the current event (in this case "evening operation"), the temperature (or the set temperature according to settings, see section 6.1 and sub-setting 12:df default display), and the present day (in this case saturday). In event mode of ...
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10 night saving operation from time d to a for saturday to sunday there are two different events by default (up to four events can be activated): normal operation (morning) from time e to f day saving operation (not defined by default) evening operation (not defined by default) night saving operatio...
Page 12: 6. Changing Settings
11 5.3. View measured sensor values this function is only available if sub-setting 12:df = 01, see section 6.2. Further on, you cannot see the measured value of a sensor that is not active, according to sub-setting 10:se, see section 6.2. Press and hold clock button for 3 seconds to see measured val...
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Abbrevation for setting current parameter, which can be adjusted. Sub-setting number this is the menu for general settings, containing 12 different sub-settings. Sub-setting 01:cf is shown first. Pressing the clock button lets you cycle between the other 12 different sub-settings. Up and down keys a...
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13 both internal and external sensor. 04:fr antifreeze function. 00=off, 01=on. If function is on the antifreeze symbol will be shown in the display. See also sub-setting 05. 05:fs temperature limitations, antifreeze and maximum floor temperature. 05=basic antifreeze, the thermostat will start heati...
Page 15: 6.3. Event Mode Settings
14 temperature 08:fl defines valid minimum setting/value for external/floor temperature. 09:fl defines valid maximum setting/value for external/floor temperature. 10:se sensor selection. 00=room sensor, 01=floor sensor, 02=both, combination mode. Set active sensor(s) according to installation instru...
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With the clock activated see section 6.1, you can change the settings for event mode of operation. Press the clock button once and the following will be displayed: you are now adjusting settings for weekdays monday to friday, “normal operation (morning)”. The start-time will be blinking, and it can ...
Page 17: 6.4. Setting The Clock
Saturday and sunday is defined the same way. For saturday and sunday day saving and evening operation is disabled by default indicated by "- -" symbols. During programming, if no buttons are pressed for 10 seconds settings will be saved and display will return to default display. Pressing on/off but...
Page 18: 6.5. Setting The Timer
Clock goes to the next setting (minutes, then finally selection of day) leave the thermostat for 10 seconds and all adjustments will be saved. Press on/off button to cancel. 6.5. Setting the timer if you want the thermostat active at certain timeframe each day you can use the timer function. Press a...
Page 19: 7. Error Messages
Other times it will be off. Set the startup-time equal to the end-time to disable the function. 7. Error messages if there is a fault associated with a sensor either e1 or e2 will be displayed flashing, along with an indication of which sensor is faulty. E1 means the sensor connection is short-circu...
Page 20: Installation Instructions
19 then hold on/off button and up button simultaneously for 10 seconds. All lcd symbols will then light up and the default data is recovered. Release the buttons. Installation instructions vent-axia vaufhtc ref 446174 product description vaufhtc ref 446174 is a digital thermostat for controlling ele...
Page 21: Warranty
20 temperature range (default): +5 to +40 °c max. Circuit breaker size: 16 a length of floor sensor: 3 m cross section of cold lead: 0.5 mm² - 2.5 mm² max. No. Of heating cables: 3 on/off-switch: electronic norms/standards: iec 60730-1 and iec 60730-2-9 emc directive 89/336 the device is ce-marked. ...
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21 before installing the thermostat determine whether the heated floor shall be controlled by using the room or floor sensor. For guidance, see table 1. Both sensors can be set active. The room sensor will then be the primary sensor, and the floor sensor can function as a temperature limitation sens...
Page 23: Table 1
22 all heating cable circuits shall have a 30ma ground fault circuit interrupter installed. Important: before installing the thermostat, the power circuit must be disconnected on phase and neutral. This is done by switching off or unscrewing the circuit breaker(s). Verify with a voltmeter that the c...
Page 24: Concrete Floor With
23 concrete floor with tiles, stone or vinyl, low to medium area load (60 - 100 w/m²) living room kitchen hall sleeping room living areas in general x vaufhc vaufhm100/15 0 concrete floor with parquet or laminate, low to medium area load (60 – 100 w/m²) living room kitchen hall sleeping room living ...
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24 1. Installation of the floor sensor 1.1 the floor sensor shall be positioned centered between two heating cable strings in the floor before pouring concrete or screed. It is recommended to install the sensor in a flexible conduit. The conduit should cover the full sensor length. Seal off the cond...
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25 controlled by using the room sensor, the thermostat must be placed inside the room. 1.6 separate the frontside (screen) and the backside (socket) by pressing lightly on the top middle (opening mechanism), see fig. 2. Place the screen somewhere safe. 1.7 connect the heating cable to the connectors...
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The frontside into the tracks at the bottom first, then align the pins so they start going into the slot correctly, then press the entire cover into its' final position. 1.13 see the enclosed user manual for operation, programming of day/night function, clock setting and general setting adjustments ...
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Fig. 2: attaching and detaching the frontside (screen) from socket slot to align pins into. Be careful! Pins must go correctly into slot. Use screw driver to open the plastic housing. Slot to align pins into. Be careful! Pins must go correctly into slot. Use screw driver to open the plastic housing....
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Head office : fleming way , crawley , west sussex , rh 10 9 yx . Tel : 01293 526062 fax: 01293 551188 uk national call centre, newton road, crawley, west sussex, rh10 9ja sales enquiries: tel: 0844 8560590 fax: 01293 565169 technical support: tel: 0844 8560594 fax: 01293 539209 for details of the wa...