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Related Manuals for TECH ST-408N
Summary of Contents for TECH ST-408N
- Page 1 Tech - 1 -...
- Page 2 ST-408N – user's manual Declaration of Confirmity No. 86/2013 Hereby, we declare under sole responsibility that the ST-408N 230V 50Hz thermoregulator manufactured TECH, headquartered in Wieprz 1047A, 34-122 Wieprz, is compliant with the Regulation by the Ministry of Economy. (Journal of Laws Dz.U.
- Page 3 Tech - 3 -...
- Page 4 • current and set temperature of the buffer • outdoor temperature • time and day of the week • operation mode of the pumps The screen view shown above is the default one in ST-408N controllers. The user may also switch to panel screen: - 4 -...
- Page 5 Tech III. Main menu III.a) Valve 1 In this submenu the user may adjust the basic settings of the first valve. III.a.1) Set temperature This option is used to set the desired temperature which will be maintained by the first valve. The temperature may be adjusted in the main screen, when Temp 1 is active.
- Page 6 ST-408N – user's manual opened whereas in the case of floor valve it is closed. III.b) Valve 2 In this submenu the user adjusts the basic parameters of the second valve similarly as in the case of valve 1. III.c) DHW pump (of the water boiler) This function enables the user to adjust the parameters of DHW pump operation.
- Page 7 Tech III.c.4)DHW pump activation threshold This option is used to set the temperature of DHW pump activation (it is the temperature measured by the CH boiler sensor). When the temperature remains below this value, the pump is inactive, whereas when the temperature is above this value, the pump is switched on and works until the set temperature is reached.
- Page 8 ST-408N – user's manual III.d) Operation modes In this function the user may choose one of the three operation modes available. III.d.1) Water boiler priority In this mode, the DHW pump is activated first and it operates until the set DHW temperature is reached (the valves close completely and the valve pumps are switched off).
- Page 9 Tech III.e) Manual mode When the manual mode option is selected, the user can open and close the valves (and the auxiliary valves if they are active) manually. It is also possible to switch on/off each valve pump, DHW pump, circulating pump as well as the additional contacts in order to check if the device works properly.
- Page 10 ST-408N – user's manual III.e.1) Screen view With this function the user can change the screen view switching between panel screen and installation screen. III.e.2) At night By selecting At night option the user enters the panel enabling him/her to adjust the screen view at night: As at daytime, Timer or Switched off.
- Page 11 PIN code, which is essential to operate the controller when the lock is active, press PIN code icon. III.i)Service menu In order to enter the service menu of the ST-408N controller, enter a 4-digit code. The code is available in TECH company. IV.Fitter's menu IV.a) Pump Anti-stop...
- Page 12 ST-408N – user's manual IV.b) TECH regulator This option allows the user to switch on/off the function of TECH room regulator (e.g. ST-280 or ST-298). In order for the regulator to cooperate with the right valve, the user should activate this type of room regulator and choose an appropriate operation mode in the valve menu.
- Page 13 Tech activation. When the temperature is below the set value, the device is inactive whereas when the temperature exceeds this value, the device is enabled. Hysteresis – the temperature difference between device activation and its • deactivation (e.g. when the activation threshold is set to 60ºC and the hysteresis value is 3ºC, the device will be activated when the temperature...
- Page 14 ST-408N – user's manual IV.c.4) Weekly control When this option is selected, the device connected to the additional contact operates according to the weekly program – the user sets time intervals (with the accuracy of 30 minutes) at which the contact will close.
- Page 15 Tech means that the device connected to the controlled contact works correctly. Hysteresis – This option is used to define the set temperature hysteresis. • Delay – if the selected sensor fails to reach the set temperature after this time •...
- Page 16 ST-408N – user's manual IV.d.3) Single stroke This is a maximum single stroke (opening or closing) that the valve may make during one temperature sampling. If it is near the preset temperature, the stroke is calculated on the basis of PROP_COEFF parameter value. The smaller the single stroke, the more precisely the set temperature can be achieved.
- Page 17 Activation of this regulator enables the user to view the current temperature of the CH boiler, water boiler and the valves. This regulator should be plugged to RJ (telephone-type) socket of the ST-408N controller using a four-core cable with appropriate pins (to the socket at the back of the controller) Standard regulator 1, 2 and 3 ➔...
- Page 18 This setting determines by how many degrees the valve temperature is to increase decrease with a single unit change in room temperature (see: Room temperature difference) This function is active only with TECH room regulator and it is closely related to the Room temperature difference parameter. IV.d.9) Room temperature difference.
- Page 19 Tech temperature. IV.d.11) Proportionality coefficient Proportionality coefficient is used for defining valve stroke. The closer the preset temperature, the smaller the stroke. If the coefficient value is high, the valve will take less time to open but at the same time the opening degree will be less accurate.
- Page 20 ST-408N – user's manual The protection against too high return temperature serves to prevent the hazardous growth in CH boiler temperature. The user sets the maximum acceptable return temperature. In the case of the hazardous growth in temperature, the valve begins to open to house installation in order to cool the CH boiler down.
- Page 21 Tech behind the valve. The set temperature deviations are in the range of +/-100C Step I: First the user must set current time and date (Fitter's menu>Timer) Step II: The user sets the temperatures for each particular weekday (Set mode 1):...
- Page 22 ST-408N – user's manual Step III (Mode): The user activates one of the two previously defined modes (Mode 1, Mode2) or deactivates weekly control completely. After one of the modes has been activated, the value of the currently set deviation will be flashing on the controller main page, informing the user that the weekly control is active.
- Page 23 Tech weather-based control ➢ change in valve set temp. ➢ room temperature difference ➢ room temperature reduction ➢ proportionality coefficient ➢ maximum floor temperature ➢ pump activation ➢ factory settings ➢ valve removal – this option is used to remove the valve from the controller ➢...
- Page 24 A similar procedure is used in the case of opening or closing of the contact input, which may be used as a simple means of property protection. If the GSM Module is to be used with the ST-408N controller, it should be activated by selecting ON option (MENU>Fitter's menu>GSM Module>ON) IV.h) External temperature measurement...
- Page 25 Higher amperage fuse should not be used as it may damage the controller. V. Maintenance. Before and during the heating season, the ST-408N controller should be checked for condition of its cables. You should also check if the controller is properly mounted and clean it if dusty or dirty.
- Page 26 ST-408N – user's manual incorrectly), the return sensor should be placed on hot water output of the CH boiler in order to prevent the water from boiling. VI. Installation Caution: The device should be installed by a qualified person. During...
- Page 27 Tech Care for the natural environment is our priority. Being aware of the fact that we manufacture electronic devices obligates us to dispose of used elements and electronic equipment in a manner which is safe for nature. As a result, the company has received a registry number assigned by the Main Inspector of Environmental Protection.
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