TECH ST-45 User Manual
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TECH ST-45 User Manual

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ST-44 USER'S MANUAL

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  • Page 1 ST-44 USER’S MANUAL...
  • Page 2 ST-45 User's Manual Declaration of Conformity No. 27/2008 Hereby, we declare under sole responsibility that the ST-45 230V 50Hz thermoregulator manufactured by TECH, ul. St. Batorego 34-120 Andrychów, compliant with Regulation by the Ministry of Economy. (Journal of Laws Dz.U.
  • Page 3 TECH ATTENTION! HIGH VOLTAGE Make sure the regulator is unplugged before working on the power supply (cable connections, device installation, etc.)! All mounting works must only be carried out by qualified electricians. Before activating the controller, measure the motor resetting efficiency, check the boiler and inspect wire insulation.

  • Page 4: Description

    (encoder) The ST-45 temperature regulator is intended for use with central heating boilers. It is used to control the water circulation pump, hot consumption water pump, floor heating pump, mixing pump, blow (fan) and fuel feeder. The ST-45 regulator features two modules: graphic display panel and control panel.

  • Page 5: Regulator Functionality

    Please send all comments on the software to the boiler manufacturer. Your controller should be set according to your individual needs, depending on the type of fuel and boiler used. TECH shall not be held responsible for incorrect settings. II.Regulator Functionality This chapter describes regulator functionality, how to change settings and navigate in the menu with the encoder (knob).

  • Page 6: Ii.2.C.h. Setpoint Temperature

    ST-45 User's Manual HOUSE HEATING C.H. H.C.W. Boiler temperature (actual to the left; setpoint to the right)  Pressing the encoder will move you to the first level. The display shows three options of the menu. To move to next options, turn the knob clockwise.

  • Page 7: Ii.4.Screen

    TECH II.4.Screen MENU Exit C.H. Setpoint H.C.W. Setpoint Screen Display With this function, you can select one of three main screens to control the thermoregulator. The C.H. screen is used for displaying the current boiler status. HOUSE HEATING The valve 1 screen is used for displaying parameters of the first valve.

  • Page 8: Ii.6. Feed Interval

    ST-45 User's Manual Press the ENCODER to enable / disable the blow. Press the ENCODER to enable / disable the central heating pump. Press the ENCODER to enable / disable the (water heater) hot consumption water pump. Press the ENCODER to enable / disable the floor heating pump.

  • Page 9: Ii.8.A) House Heating

    TECH The higher the gear, the higher the speed with 10% being the minimum and the 100% being the maximum speed of the fan. Initially, the fan runs always at full speed so that it is possible to start it with the motor being slightly dusty.
  • Page 10 ST-45 User's Manual If you select this option, the regulator will switch into the water heater priority mode. Activating the hot consumption water pump will cause the regulator to switch into the water heater priority mode. In this mode, the (hot consumption water) heater pump is activated until the set temperature is reached.

  • Page 11: Ii.8.C) Parallel Pumps

    TECH II.9.c) Parallel Pumps In this mode, the pumps run initially in parallel above the pump activation threshold (set to 40°C by default). The central heating pump continues to run and the hot consumption water pump is shut off after the water heater setpoint temperature has been reached.

  • Page 12: Ii.10. Pause In Sustain Mode

    ST-45 User's Manual II.11.Pause in Sustain Mode MENU Exit Sustain Pause Fan Sustain Fitter’s Menu With this function, you can set the pause of the feeder in the sustain mode. The function is used for regulating the furnace while in the sustain mode.

  • Page 13: Fitter's Menu

    TECH III.1.Factory Settings FITTER’S MENU Exit Factory Settings Valve 1 Valve 2 The regulator has been pre-configured. However, it should be adjusted to your individual needs. It is possible to return to the factory settings at any time. By enabling factory settings, all boiler settings that you have made will be replaced by settings made by the manufacturer.

  • Page 14: Iii.2.B) Temperature Monitoring

    ST-45 User's Manual C.H. VALVE REGISTRATION Calibrating valve Enter Module Number Please wait III.2.b) Temperature Monitoring VALVE Exit TEMP. MONITOR Registration Temp Monitor seconds Opening Time In this function, you can set the temperature monitoring time for water that is delivered downstream of the valve to heat the house. This means that the temperature downstream of the valve is checked periodically.

  • Page 15: Iii.2.D) Single Stroke

    TECH III.2.d) Single stroke SINGLE STROKE This function can be used for setting the opening stroke for the valve, i.e. by what percent is the valve to be opened or closed. III.2.e) Minimum opening MINIMUM OPENING With this function, you can set the minimum value for closing of the valve.

  • Page 16: Iii.4.Room Regulator

    Room Regulator Boiler Hysteresis The ST-45 regulator can be connected to a room regulator. In such case, it has a higher priority, which does not apply to heating from the water heater. The feeder, fan and central heating pup run until the temperature set with the room regulator is reached.

  • Page 17: Iii.6.H.c.w. Hysteresis

    TECH temperature. This is a difference between the temperature of entering into the sustain cycle and the temperature of returning to the duty cycle (e.g.: when the setpoint temperature is set to 60°C, and the hysteresis is set to 3°C, entering into the sustain cycle will be effected after the temperature reaches 60°C, whereas return to the duty cycle will be...

  • Page 18: Iii.8.Circulation Pump

    ST-45 User's Manual heating temperature in a range between 20°C and 55°C. You can also set the pump switch-on and shut-off threshold, e.g. 25°C, meaning that when the temperature drops below this value, the pump is shut off, and when it rises above this value, the pump runs until the setpoint temperature is reached.

  • Page 19: Iii.10. Language Version

    With this function, you can check the software version for a given thermoregulator. IV.Service Menu To be able access service functions of the ST-45 controller, you need to enter a four-digit code. The code is available from Sas or Tech. SERVICE MENU Enter Access Code IV.1.Pump Switch-on Temperature...

  • Page 20: Service Menu

    ST-45 User's Manual With this function, you can set the temperature for central heating pump and hot consumption water pump activation. (This is the temperature measured on the boiler). Below the set temperature (-2°C), the pumps are inoperative, and above the setpoint value, the pumps are activated but they operate according to the selected mode.

  • Page 21: Iv.4.C.h. Pump Activation Alarm

    TECH IV.4.C.H. Pump Activation Alarm SERVICE MENU Exit C.H. PUMP ON ALARM C.H. Pump On Alarm Boiler Alarm Temp degrees H.C.W. Pump Summer With this function, you can set the alarm temperature for central heating pump activation. The central heating pump is to be activated in case the boiler should be overheated, in the water heater priority mode.

  • Page 22: Iv.7.C.h. Pump Room Regulator

    ST-45 User's Manual With this function, you can switch on and off the hot consumption water pump in the summer mode, i.e. specify whether the hot consumption water pump is to run after the preset temperature has been reached or it is to be shut off.

  • Page 23: Protections

    TECH In this function, you can switch on or off the stand-by mode for the thermoregulator. All motors of devices (e.g. fan) that are connected to the thermoregulator are stopped. ATTENTION: in the stand-by mode, the power is not cut off completely.

  • Page 24: Vi.3.Automatic Sensor Check

    ST-45 User's Manual temperature exceeds the critical value, ranging from 85°C and 90°C. This is to prevent water from boiling in the system when the boiler has been overheated or the regulator damaged. With this type of safety temperature protection, the system will return to the initial position (automatically).

  • Page 25: Vi.5.Temperature Protection

    TECH However, if the temperature continues to drop, the controller will activate the feeder and the fan at 60°C and it will continue to operate until the water heater setpoint temperature is reached. VI.5.Temperature Protection The regulator features an additional protection in case the bimetal sensor is damaged.

  • Page 26: Maintenance

    ST-45 User's Manual VII.Maintenance Before and during the heating season, the ST-45 controller should be checked for any damages in its cables. You should also check if the controller is properly mounted and clean it if dusty or dirty. It is...

  • Page 27: Assembly

    ATTENTION: improper cable connection may damage the regulator! ATTENTION: the ST-45 controller must be built into the boiler so that the cable connection strips are not accessible. The regulator may not be operated in a closed-circuit central heating system. It is necessary to provide for safety valves, pressure valves and a surge tank in order to prevent water from boiling in the central heating system.

  • Page 28: Viii.1.Cable Connection Diagram For Controller

    VIII.1.Cable Connection Diagram for Controller Particular attention should be paid when making cable connections with the controller. Especially, the grounding conductor should be connected properly. Figure 1: ST-45 cable connection diagram PE-GROUND (YELLOW-GREEN) N- NEUTRAL (BLUE) L- PHASE (BROWN) -28-...

  • Page 29: Table Of Contents

    TECH Table of Contents I. Description.................. 4 II. Regulator Functionality..............5 II.1. Main Page................5 II.2. C.H. Setpoint Temperature.............6 II.3. H.C.W. Setpoint Temperature..........6 II.4. Screen................. 7 II.5. Manual Mode................. 7 II.6. Feed Interval................ 8 II.7. Blow Force................9 II.8. Operation Mode..............9 II.8.a) House Heating..............9...
  • Page 30 ST-45 User's Manual IV.5. Boiler Alarm Temperature............22 IV.6. H.C.W. Summer Pump............22 IV.7. C.H. Pump Room Regulator..........22 B) Reed Relay Protection.............23 V. Stand-by Mode................23 VI. Protections................24 VI.1. Temperature Alarm.............24 VI.2. Thermal Protection..............24 VI.3. Automatic Sensor Check............25 VI.4. Anti-Boil Protection..............25 VI.5. Temperature Protection............25 VI.6.
  • Page 31 TECH -31-...
  • Page 32 ST-45 User's Manual -32-...

Table of Contents