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Computherm Q7 Operating Instructions Manual
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Computherm Q7 Operating Instructions Manual

Programmable, digital room thermostat
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COMPUTHERM Q7
Programmable, digital room thermostat
Operating Instructions

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Summary of Contents for Computherm Q7

  • Page 1 COMPUTHERM Q7 Programmable, digital room thermostat Operating Instructions...
  • Page 2 GENERAL DESCRIPTION OF THE THERMOSTAT COMPUTHERM Q7 type switched-mode room thermostat is suitable to regulate the overwhelming majority of boilers available in Hungary. It can easily be connected to any gas boiler or air conditioning device that has a double...
  • Page 3 your residence or office to the The buttons of the thermostat required temperature at the dates and times specified by you, to reduce energy costs while maintaining comfort. Separate independent daily temperature programs can be prepared for each day of the week. Six switching times (which can be set at 10-minute intervals) can be selected at your discretion...
  • Page 4 The switching sensitivity of the thermostat can be selected: ±0.2°C (factory default setting, recommended for radiator-based heating systems) or +0/-0.2°C (this setting is recommended for underfloor heating). This figure means the temperature difference between the adjusted value and the actual temperature measured during the switching process.
  • Page 5 The information shown on the liquid crystal display of the thermostat includes the following: The days of the week Time Set temperature Manual control indicator Programme number Timed manual control indication Current temperature of the room Dead battery Sign of boiler in operation...

  • Page 6: Important Warning

    1. LOCATION OF THE DEVICE It is reasonable to locate it in a room used regularly or for many hours per day so that it is in the direction of natural ventilation in the room but protected from drought or extreme heat (e.g. direct sunlight, refrigerator, chimney, etc).

  • Page 7: Installation Of The Thermostat

    2. INSTALLATION OF THE THERMOSTAT • Pressing the lock on the upper side of the hous- of the thermostat, re- Vertical angle: 30 - 45° move the back cover of the Latch thermostat as shown in the figure below. • With the help of the screws provided and some tools fas- ten the rear panel of the de- vice to the wall.
  • Page 8 • The output relay of the thermostat has three potential-free connection points, i.e. No. 1 (NO); No. 2 (COM) and No. 3 (NC), which are located under an inner cover on the inner side of the rear panel. To control heating, connect the two connection wires of the device to be controlled to terminals No.

  • Page 9: Basic Settings

    The voltage appearing at terminal No. 1, No. 2 or No. 3 depends only on the system being controlled, therefore the dimensions of the wire are determined by the type of the device to be controlled. The length of the wire is of no significance. 3.
  • Page 10 well as adjusted and measured temperatures. (If this information fails to appear on the display, press the “ReSeT” button with a wooden or plastic stick. To press the button, do not use any electrically conductive materials or graphite pencil). After the batteries have been inserted, press the “SeT” button. After the “SeT”...
  • Page 11 Wednesday 3, etc.). Press the “DAY” button again. At this time the number indicating the day stops flashing and becomes visible continuously while the numbers indicating the hour will flash on the display. Using the large button on the front panel of the device, set the hour value of the current time.
  • Page 12 3.3 Setting switching sensitivity According to factory default settings, the switching sensitivity is ±0.2°C (the display indicates this setting with symbol “S:1”) which can be modified to +0/-0.2°C (the display indicates this setting with symbol “S:2”). The required switching sensitivity can be set by pressing ”DAY”, “CoPY”...
  • Page 13 where plate radiators are installed) with low thermal inertia, while the +0/-0.2°C switching sensitivity (the display shows symbol “S:2” for this setting) is recommended to control heating systems with high thermal inertia (e.g. underfloor heating). 3.4 Activation of the pump protection function Under the factory default settings, the pump protection function is inactive.

  • Page 14: Programming The Thermostat

    protection function switches on the boiler for a one minute period at 12:00 p.m. every day outside the heating season. (The pump protection function can accomplish its task only if the boiler is in working order in the summer, too. It is reasonable to set a low temperature level on the thermostat for this period, e.g.
  • Page 15 switching time P2 is reached. After switching time P2 the temperature selected to switch P2 will be valid. Note! The software of the thermostat will only enable increasing consecutive times to be set, in accordance with the serial number (P1; P2; etc.) of the switches. With factory default settings the device will perform the following switches each day of the week Temperature...
  • Page 16 The temperature pattern, of course, can be freely modified so that a temperature curve is available for each day of the week to meet your needs in the best possible way. 4.1 Programming steps: • Press the “SeT” button to go back to the main screen. • Press the “SeT”...
  • Page 17 be performed separately for each day of the week, selecting the days one by one. (If there are days for which you intend tocreate the same program, it is sufficient to create the program only once, because it can easily be applied to any other day with the help of the “CoPY”...
  • Page 18 • Set the temperature level of switch P1 by pressing, or pressing repeatedly, the large..or..button on the front panel of the device. (The temperature can be set in 0.5°C increments). • Press the “PRoG” button again. At this point the next programming step should be performed, i.e. the starting time of switch P2 should be set.
  • Page 19 • Similarly to the previous steps, with the help of “PRoG” button and the large and/or buttons perform settings until the time and temperature of switch P6 is set. • After the temperature of switch P6 has been set, by repeated pressing of the “PRoG” button the set values can be inspected and data can be modified by repeating the steps described above.
  • Page 20 the “CoPY” function. The notice “COPY” appearing in place of the hour characters and the flashing serial number 1 indicating Monday shows that conditions are ready for copying a program. • Select the day (e.g. 2) whose program you wish to copy to another day or other days by pressing, or pressing repeatedly, the large..or..button on the front panel of the device.
  • Page 21 • Following this, by pressing, or pressing repeatedly, the large..or..button on the front panel of the device, you can choose further days of the week and can copy the program of the day selected beforehand (e.g. 2) by pressing the “CoPY” button to these days too.
  • Page 22 (days), the symbol of switch P1 and the time and temperature level set for switch P1 will appear on the display. (None of the values is flashing). Repeatedly press the “PRoG” button to check the switching values of P2, P3, etc. • The switching values set for various days can be displayed by pressing buttons..or..and the “PRoG”...
  • Page 23 5. TEMPORARY MODIFICATION OF THE TEMPERATURE CORRESPONDING TO THE PROGRAM To simplify manual temperature modifications, with factory default settings temperatures of 18°C and 22°C are assigned to the large..button and..button, respectively. When modifying the temperature manually by pressing the..or..button once, the temperature will immediately jump to the factory value of the button. For example, if the current switch P3 ensures a temperature of 19°C, it can be modified to a standard temperature that ensures 22°C when needed by pressing the..button only once, without having to press the..button...
  • Page 24 The cost-effective and standard temperature values assigned to buttons..and..in the factory can be freely modified as follows: • To set a cost-effective temperature, press the “SeT” button and keep it depressed then press the..button once and, following this, with the help of the..and/or..buttons, set the cost-effective temperature selected by you.
  • Page 25 the main screen. (After approximately 10 seconds the adjustment that has been finished will be automatically acknowledged and the thermostat will go back to the main screen). If you wish to operate your device in a way that differs temporarily from the program that has been set (e.g.
  • Page 26 that is, 1 hour 2 minutes). After this time has elapsed, the..icon disappears and the device returns to the program that has been set. If you wish to return to the set program before the time of the next switch is reached, please press the “SeT”...
  • Page 27 set (e.g. for 3 hours) then the..icon disappears after the set time has elapsed, and the device will continue to work according to the program that has been set. Press the “SeT” button before the time set for temperature modification has expired to interrupt the temperature modification and return the device to operating according the program.
  • Page 28 required (e.g.10). The display will show alternately the exact time and the number of days remaining in manual control. The..icon disappears after the set time has expired, and the device will continue to work according to the program that has been set. Pressing the “SeT” button before the time set for temperature modification has expired, the temperature modification will be interrupted and the device will return to operate according the program.

  • Page 29: Changing The Battery

    manual control. Pressing the “SeT” button stops temperature modification and the device will return to operate according the program. 6. TURNING ON THE BACKGROUND LIGHT When you press the ”LiGHT” button, the background light of the display will turn on for 10 seconds. When you press another button while the display is illuminated, the background light will turn off only after 10 seconds have elapsed since the last button had been pushed.
  • Page 30 should be set again after the batteries have been replaced, but the device saves the program that has been loaded even without batteries therefore there is no need to reprogram them. On the other hand, pressing the “RESET” button deletes the program loaded and makes the device restore factory default settings.

  • Page 31: Technical Data

    TECHNICAL DATA — switchable current: 8A (2A inductive load) — temperature measurement range: 0 to 35°C (in 0. 1 °C increments) — adjustable temperature range: 7 to 35°C (in 0.5°C increments) — temperature measurement accuracy: ±0.5°C — selectable switching sensitivity: ±0.2°C (for radiator-based heating systems) +0/-0.2°C (for underfloor heating) —...
  • Page 32 1 to 99 days: with the buttons, then holding down the “HoLD” button for 2 seconds • until the next interference: with the and “ HoLD” buttons The COMPUTHERM Q7 type thermostat complies with the requirements of standards EU EMC89/336/EEC; LVD 73/23/EEC; 93/68/EEC and R&TTE 1999/5/EC.