User Instructions for GECO GH21TA controller
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Page 27 Edition I
19.06.2013
8.3
Heating installation number 3
The following list specifies the parameters available to the user, along with the assignment of
outputs for attached devices and inputs for temperature sensors.
Diagram 3 – Summary of user parameters
Parameter
Range
Factory settings
Set boiler temperature
50 ÷ 85
50°C
Feeder stop time
5 ÷ 250
45s
Maintain time
1 ÷ 250
15min
Fan speed
1 ÷ 10
5
Returning temperature
40 ÷ 60
50°C
Diagram 3 – Assignment of controller outputs
Output
Connected devices
O5-O6
CH pump
O7-O8
Mixer pump
O9-11
Feeder
12-14
Fan
Diagram 3 – Assignment of controller inputs
Input
Description
50-51
Sensor for water leaving the boiler
52-53
Returning water sensor
54-55
Fuel feeder sensor (Optional)
56-57
Reed relay
58-59-60-61
GECO GA03HA room panel (Optional)