E.C.A. GP11, Руководство по обслуживанию

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CH HEATING MODE
CH Heating Mode is enabled when P3 Knob is on winter position otherwise CH mode is disabled.
If the water temperature, measured by the CH flow NTC probe, is under the low limit (CH flow
temperature ON in table 1) for the CH set-point and heat demand is requested on room thermostat
input (when PP30 is selected as ON_OFF room thermostat available); the burner is turned on. For
CH operation, first fan and pump are energized, then APS check is done and ignition is started.
If the boiler is on for the first time, APS check is done for both of the 2 conditions, APS is checked
to be closed after fan is on and then fan is off and APS is checked to be opened.
For the first two minutes after ignition, minimum current is applied to the modulation valve. After
two minutes, modulation current is controlled with a PID algorithm to set the CH temperature to
CH SET temperature.
Pump is on for “always” or “45 seconds”, during antifast cycling time according to the parameter
“PP06 Pump Operation in CH AFCT Time”. If room thermostat input is opened, pump is on for 45
seconds.
After every heat demand request end, a fan overrun (Fan overrun time) is done.
Radiator symbol is flashing during CH heating operation and CH flow NTC probe temperature is
displayed on LCD. Flame symbol is ON if the flame is available.
DHW INSTANTENOUS HEATING MODE
The DHW Instantaneous function has higher priority than the central heating function.
DHW Instantaneous Heating Mode is enabled when P3 knob is on winter or summer position. Flow
can be detected by a switch or sensor according to parameter “PP12 DHW Flow CH Pressure Type”.
If water flow is detected for 1,5 seconds by flow switch or flow sensor, boiler enters into DHW
operation. On DHW mode entrance fan is energized. Pump is also energized. After checking the air
pressure switch, ignition is enabled. After flame detection, flame modulation is done with a PID
type algorithm till the achievement of the DHW set point.
Aim is to set the water temperature to DHW SET temperature, for this purpose the modulator
current is controlled with a PID algorithm. But, if the water temperature measured by the DHW
NTC probe goes over the high limit (DHW temperature OFF), the burner is turned off. When it’s
under the low limit (DHW temperature ON in table 1), the boiler is turned on again.
DHW heating demand request is stopped when water flow detection is stopped. Pump and fan are
run till their overrun times.
DHW (tap) symbol is flashing during DHW heating operation and DHW NTC probe temperature is
displayed on LCD. Flame symbol is ON if the flame is available.
If DHW sensor error occurs “F2” error is given and DHW heating is stopped. But CH heating
operation goes on.