TECH ST-19 Manual

ST-19
Principle of operation Principle of operation
The ST-19 regulator is responsible for controlling the central heating pump. It is used The ST-19 regulator is responsible for controlling the central heating pump. It is used
to start the pump when the temperature exceeds a given value and stop it when the to start the pump when the temperature exceeds a given value and stop it when the
boiler has cooled down (as a result of damping). This is to prevent the pump from boiler has cooled down (as a result of damping). This is to prevent the pump from
running unnecessarily and save energy consumed by the boiler (up to 60% depending running unnecessarily and save energy consumed by the boiler (up to 60% depending
on the amount of use), as well as extend the life of the pump, while increasing its on the amount of use), as well as extend the life of the pump, while increasing its
reliability and reducing running costs. reliability and reducing running costs.
The pump switch-on temperature is set with a potentiometer (between 25o C and The pump switch-on temperature is set with a potentiometer (between 25o C and
85o C). The pump is stopped when the actual temperature drops 2o C below the 85o C). The pump is stopped when the actual temperature drops 2o C below the
setpoint value (set with the potentiometer). Thus, the pump is not switched on and off setpoint value (set with the potentiometer). Thus, the pump is not switched on and off
in cycles (reducing its life span) as a result of small changes of the temperature. in cycles (reducing its life span) as a result of small changes of the temperature.
Apart from the potentiometer, the regulator is fitted with an ON/OFF switch Apart from the potentiometer, the regulator is fitted with an ON/OFF switch
(POWER LED lit), manual pump start-up button (MANUAL MODE LED lit) and a (POWER LED lit), manual pump start-up button (MANUAL MODE LED lit) and a
DUTY LED to indicate that the pump is running. DUTY LED to indicate that the pump is running.
The regulator is also intended for protecting the motor against blockage. The pump is The regulator is also intended for protecting the motor against blockage. The pump is
started every 10 days for 5 minutes. Additionally, the current time is stored within started every 10 days for 5 minutes. Additionally, the current time is stored within
EEPROM memory to make sure the time is correct even after a power failure. EEPROM memory to make sure the time is correct even after a power failure.
The regulator is protected with a WT 1.6A tube fuse. The regulator is protected with a WT 1.6A tube fuse.
Installation Installation
All connection works must only be carried out by qualified electricians. All connection works must only be carried out by qualified electricians.
The sensor should be located at the boiler outlet with a band clip and separated from The sensor should be located at the boiler outlet with a band clip and separated from
external conditions with an insulation tape. external conditions with an insulation tape.
The power supply line should be connected as follows: blue and brown – 230 V, The power supply line should be connected as follows: blue and brown – 230 V,
yellow-green (protective) should be earthed yellow-green (protective) should be earthed
The distance between the installation holes is 123.6 mm. The distance between the installation holes is 123.6 mm.
ATTENTION! ATTENTION!
! !
High voltage! High voltage!
Make sure the regulator is disconnected from the mains before installation (pump Make sure the regulator is disconnected from the mains before installation (pump
cable connections, device installation, etc.)! cable connections, device installation, etc.)!
Do not disassemble the regulator and do not insert any objects through the installation Do not disassemble the regulator and do not insert any objects through the installation
holes. The regulator must be protected against contamination and humidity. Any holes. The regulator must be protected against contamination and humidity. Any
damage to the housing may lead to an electric shock. The device needs to be damage to the housing may lead to an electric shock. The device needs to be
connected to a grounded circuit. connected to a grounded circuit.
Operation Operation
ANTI-STOP ANTI-STOP
tech
ST-19
The ST-19 regulator is responsible for controlling the central heating pump. It is used The ST-19 regulator is responsible for controlling the central heating pump. It is used
to start the pump when the temperature exceeds a given value and stop it when the to start the pump when the temperature exceeds a given value and stop it when the
boiler has cooled down (as a result of damping). This is to prevent the pump from boiler has cooled down (as a result of damping). This is to prevent the pump from
running unnecessarily and save energy consumed by the boiler (up to 60% depending running unnecessarily and save energy consumed by the boiler (up to 60% depending
on the amount of use), as well as extend the life of the pump, while increasing its on the amount of use), as well as extend the life of the pump, while increasing its
reliability and reducing running costs. reliability and reducing running costs.
The pump switch-on temperature is set with a potentiometer (between 25o C and The pump switch-on temperature is set with a potentiometer (between 25o C and
85o C). The pump is stopped when the actual temperature drops 2o C below the 85o C). The pump is stopped when the actual temperature drops 2o C below the
setpoint value (set with the potentiometer). Thus, the pump is not switched on and off setpoint value (set with the potentiometer). Thus, the pump is not switched on and off
in cycles (reducing its life span) as a result of small changes of the temperature. in cycles (reducing its life span) as a result of small changes of the temperature.
Apart from the potentiometer, the regulator is fitted with an ON/OFF switch Apart from the potentiometer, the regulator is fitted with an ON/OFF switch
(POWER LED lit), manual pump start-up button (MANUAL MODE LED lit) and a (POWER LED lit), manual pump start-up button (MANUAL MODE LED lit) and a
The regulator is also intended for protecting the motor against blockage. The pump is The regulator is also intended for protecting the motor against blockage. The pump is
started every 10 days for 5 minutes. Additionally, the current time is stored within started every 10 days for 5 minutes. Additionally, the current time is stored within
EEPROM memory to make sure the time is correct even after a power failure. EEPROM memory to make sure the time is correct even after a power failure.
The regulator is protected with a WT 1.6A tube fuse. The regulator is protected with a WT 1.6A tube fuse.
All connection works must only be carried out by qualified electricians. All connection works must only be carried out by qualified electricians.
The sensor should be located at the boiler outlet with a band clip and separated from The sensor should be located at the boiler outlet with a band clip and separated from
external conditions with an insulation tape. external conditions with an insulation tape.
The power supply line should be connected as follows: blue and brown – 230 V, The power supply line should be connected as follows: blue and brown – 230 V,
yellow-green (protective) should be earthed yellow-green (protective) should be earthed
The distance between the installation holes is 123.6 mm. The distance between the installation holes is 123.6 mm.
! !
Make sure the regulator is disconnected from the mains before installation (pump Make sure the regulator is disconnected from the mains before installation (pump
cable connections, device installation, etc.)! cable connections, device installation, etc.)!
Do not disassemble the regulator and do not insert any objects through the installation Do not disassemble the regulator and do not insert any objects through the installation
holes. The regulator must be protected against contamination and humidity. Any holes. The regulator must be protected against contamination and humidity. Any
damage to the housing may lead to an electric shock. The device needs to be damage to the housing may lead to an electric shock. The device needs to be
connected to a grounded circuit. connected to a grounded circuit.
Principle of operation Principle of operation
Operation Operation
DUTY LED to indicate that the pump is running. DUTY LED to indicate that the pump is running.
ANTI-STOP ANTI-STOP
Installation Installation
ATTENTION! ATTENTION!
High voltage! High voltage!
tech