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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
12. OPERATION OF MICROPROCESSOR
CONTROLER WHEN BURNING SOLID
FUEL
The controller is designed for controlling
CH boilers. It is regulating the pump
responsible for CH water circulation,
HCW pump and the fan.
Model ST-81
is
PID controller using current signals and
power the fan is adjusted depending on
the temperature of the boiler.
The fan
runs continuously and its power depends
directly on the measured temperature of
the boiler.
12.1. Controllers view. Explanation of
buttons and light indicators.
This controller can
save up to 13% fuel
and
provide
a
constant
water
temperature and longer life of your boiler.
The heat of the flue gas is used for heating
rather than lost through the flue.
Explanation of buttons:
p
- Navigation arrow UP / PLUS
q
- Navigation arrow DOWN / MINUS
MENU
button - Enter menu / approve
settings
EXIT
button - canceling settings
- Power switch ON/OFF
- Fan
- CH -central heating - pump
- HCW - hot water- pump
- Manual operation
12.1.1. Fire up –
The cycle begins when
you activate the fire up function in the
controller’s menu and is active until
the central heating boiler temperature
reaches 40°C (the default fire-up
threshold), on condition that the
temperature does not drop below this
value for 2 min. (the default fire-up time).
If these conditions are met, the controller
will switch to the operation mode and the
manual operation symbol on the housing
will be deactivated. If the controller fails
to reach parameters required for entering
into the operation mode within 30 min.
from activation of the fire-up function,
the „Unable to fire up“ message will
appear on the display. In such a case, the
fire-up cycle needs to be restarted.
12.1.2. Operation
– The operation cycle
is the basic functionality of the controller.
The power of fan is regulated by the user.
If the temperature rises above the set
temperature a so called suspension mode
will be activated.
12.1.3. Suspension mode
– this mode
will be activated automatically if the
temperature is equal or higher than the
set temperature. In that case, in order to
ensure smooth decrease of temperature
of circulating water it is necessary to
properly set operation times of the fan.
12.1.4. Damping -
if boiler temperature
drops by 2°C below the fire-up threshold
and fails to rise above this value for 60
min. (default damping time), the controler
will switch to the damping mode. While
in this mode, the fan is deactivated and
the display shows “Damping”. In case
of voltage loss, the controller ceases to
operate. When power is restored, the
controller returns to operation with