TECH ST-45 User Manual
ST-44 USER’S MANUAL
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 14, 34-120 Andrychów, is compliant with the
Regulation by the Ministry of Economy. (Journal of Laws Dz.U.
155 Item 1089) of July 21, 2007 implementing provisions of the
Low Voltage Directive (LVD) 2006/95/EC of January 16, 2007.
The ST-45 controller has been tested for electromagnetic
compatibility (EMC) with optimal loads applied.
For compliance assessment, harmonized standards were
used:
PN-EN 60730-2-9:2006.
Co-owners:
Paweł Jura, Janusz Master
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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.
CAUTION
THE DEVICE MAY BE DAMAGED IF STRUCK BY A
LIGHTNING. MAKE SURE IT IS UNPLUGGED
DURING STORMS
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ST-45 User's Manual
I.Description
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.
The ST-45 can be used with two optional additional three-way or
four-way valve control modules. The regulator has been designed
and made for comfort.
It is very easy in use. All parameters are adjusted with a convenient
knob (encoder). The ST-45 regulator features also a graphic display that
shows the current status of the boiler.
If the furnace temperature is lower than the setpoint temperature, the
regulator is operated in its duty cycle, i.e. the blow is active and the
operation time of the fuel feeder is set by the user (both operation and
stand-by times are set).
If the furnace temperature is equal to or higher than the setpoint
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Boiler Temp.
Water Heater
Temp.
Feeder; C.H.
Pump; H.C.W.
Pump; Fan
Button for accessing
submenus,
confirming settings
(encoder)
Exit
TECH
temperature, the regulator is operated in its sustain cycle (both stand-
by and sustain mode times are to be set).
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). Depending on the
mode the boiler is currently in, the display will show boiler operational
parameters. The given mode is selected by the user.
While the user is logging in, the display shows the manufacturer and the
software version.
After several seconds, you can select your language. With this function,
you can change the language version.
II.1.Main Page
During normal operation, the graphic display shows the main page with
the following data:
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LANGUAGE VERSION
Exit
Polish
English
ST-45 User's Manual
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. In order to exit the menu, select EXIT (only in the edit mode)
In order to apply any changes, they need to be confirmed by pressing the
encoder on the CONFIRM message. If you do not wish to make any
changes in a given function, press the encoder on the CANCEL message.
II.2.C.H. Setpoint Temperature
With this function, you can set the boiler temperature. You can change
the boiler temperature in a range between 45°C and 80°C.
II.3.H.C.W. Setpoint Temperature
With this function, you can set the hot consumption water temperature.
You can change the boiler temperature in a range between 40°C and
75°C.
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HOUSE HEATING
C.H. H.C.W.
MENU
Exit
C.H. Setpoint
H.C.W. Setpoint
Screen Display
MENU
Exit
C.H. Setpoint
H.C.W. Setpoint
Screen Display
TECH
II.4.Screen
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.
The valve 1 screen is used for displaying parameters of the first valve.
The valve 2 screen is used for displaying parameters of the second
valve.
II.5.Manual Mode
For your convenience, the regulator features a manual mode module. In
this mode, each individual element is enabled and disabled independently
of the other.
Pressing the ENCODER will enable the fuel feeder. The feeder will
operate until the ENCODER is pressed again.
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MENU
Exit
C.H. Setpoint
H.C.W. Setpoint
Screen Display
HOUSE HEATING
VALVE
VALVE TEMP
SETPOINT TEMP
OPENING
MENU
Exit
Manual Mode
Feed Time
Feed Pause
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.
Press the ENCODER to enable / disable the mixing pump.
Press the ENCODER to enable / disable the alarm.
II.6.Feed Time
With this function, you can set the operation time for the fuel feeder. Set
the operation time according to the type of fuel and boiler used.
II.7.Feed Interval
With this function, you can set the stand-by time for the feeder,
depending on the type of fuel used in the boiler. Incorrect operation and
stand-by times may cause the boiler to malfunction, i.e. inability to burn
all carbon and to reach the setpoint temperature. Setting correct times
will ensure correct boiler operation.
II.8.Blow Force
With this function, you can control the fan speed. The adjustment range
is from 10 to 100% (it can be assumed that the fan operates in gears).
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MENU
Exit
Manual Mode
Feed Time
Feed Pause
MENU
Exit
Blow Force
Operation Mode
Sustain Mode
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.
II.9.Operation Mode
With this function, you can select one out of four operation modes.
II.9.a)House Heating
If you select this option, the regulator will switch into the house heating
mode. The central heating pump starts to run above the pump activation
threshold (set to 40°C by default). Below this temperature, the pump is
shut off.
II.9.b) Water Heater Priority
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MENU
Exit
Blow Force
Operation Mode
Sustain Mode
HOUSE HEATING
C.H. H.C.W.
WATER HEATER PRIORITY
C.H. H.C.W.
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. Then, the pump is shut off and the central
heating circulation pump is activated.
In order to activate the hot consumption water pump, it is necessary to
raise the setpoint temperature above the pump activation threshold (the
pump activation threshold to be adjusted in the service menu).
The temperature can be changed in the H.C.W Set function (see point
II 2).
In this mode, the fan and the feeder are operated as long as the
temperature is below 62°C to prevent the boiler from overheating. Such
condition will be maintained until the water heater setpoint temperature
is reached. When the temperature is reached, the hot consumption water
pump is shut off and the central heating pump is activated.
The central heating pump will run until the water heater temperature
drops below the setpoint value; then, the central heating pump is shut
off and the hot consumption water pump is activated.
The hot consumption water priority function consists in that the
consumption water is heated up before heating up water in radiators.
ATTENTION: the boiler should have non-return valves mounted on the
central heating pump and hot consumption water pump circuits. A valve
mounted on the pump will prevent the hot consumption water from being
discharged from the water heater. A valve mounted on the central
heating circuit will not let the hot consumption water move from the
water heater into the house circuit.
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