GH10TA USER MANUAL
PAGE
10
Issue I
July 2017
6.2.
Automatic operation mode.
By pressing
, you can turn on the automatic operation mode – the Controller lights the
upper
indicator
on
(
).
6.2.1.
Fuel Feeder
In the AUTO mode, the fuel feeder operates according to the value set in the user settings
U1 –
“Feeder standstill duration”
. The amount of fuel supplied in one feeder cycle is specified in the
F21
service
parameter.
After going from MANUAL mode into AUTO mode or after power fail the controller starts the
feeder until reaching the position of maximum withdrawal (reed response), after that the feeder starts to
work normally.
The feeder work is suspended after STOP & GO function activation. The mechanism of fan and
feeder suspension (STOP & GO) does not apply if the temperature drop will be greater than 6 degrees
below the setpoint. This function can be disabled via the
F23
service parameter.
Activation and operation of the fuel feeder is indicated by the
lower
indicator on
.
6.2.2.
CH Pump
In the AUTO mode, the CH pump starts when the temperature of the boiler water is higher or equal
to the value set in the
F06
service setting (factory setting is 40°C).
Turning the CH pump on and its operation is indicated by a vertical line at the left side of the
Controller main display screen.
The Controller turns off the pump when the water temperature drops to the activation
temperature minus 4°C. (If the CH pump start temperature is 40°C, then the CH pump stop temperature is
36°C).
6.2.3.
Fan
In the AUTO mode, the fan runs continuously until the boiler temperature reaches the value set by the user
in the
U0
setting.
During that period the fan runs at its maximum speed. Activation and operation of the
fan is indicated by the
upper
indicator on
.
6.2.4.
Maintain Operation Mode
The Controller gets into that mode when the boiler temperature reaches the value set by the user
in the
U0
setting.
This mode of operation is indicated by lighting the
lower
indicator on
(
).
The fuel feeder and fan remain off in that mode for the period set by the user in the
U2
setting. When the
period ends, the Controller turns on the feeder and fan for on fuel feeding cycle.
The fan will operate for the period respectively longer that the feeder for the time set in the
F18
service
setting in order to fire up the added coal.
The Controller will exit the MAINTAIN mode and return to the AUTO mode if the boiler temperature drops
to the value equal to the
U0
–
F05.
The CH pump operates identically as in the AUTO mode.