User Instructions for GECO GH21TA controller
______________________________________________________________________________
Page 16 Edition I
19.06.2013
6.6.2
Installation settings
Description of installation parameters
Min
Max
Factory
settings
System configurations:
(1) - K1: CH
(2) - K2: CH + DHW
(3) - K3: CH + Mixer
1
3
1
DHW priority (optional)
No
Yes
No
Summer mode (optional)
No
Yes
No
Anti-Legionella (optional)
No
Yes
No
Boiler temperature hysteresis
2
10
5°C
Temperature hysteresis of DHW/returning (optional)
2
10
5°C
Regulation option:
(1) - Standard
(2) – Grate mode
(3) – Pump only
1
3
1
Anti-stop function:
(1) - Standard
(2) - Complete
(3) - Inactive
1
3
3
Emergency work:
(1) - Inactive
(2) - Feeder
(3) – Fan
(4) – Fan
1
3
1
•
System configuration
– Allows selection of the heating system operated by the controller,
with an additional pump or without. A description of the system is in section 8.
•
DHW priority
– Activating the function makes water heating the primary function of the
Controller. A description of the functions in section 7.
•
Summer mode
– This function turns off the central heating pump and the boiler operates
only to heat water. A description of this function is in section 7.
•
Anti-legionella
– This is aimed at limiting the growth of bacteria of the genus legionella
pneumophila in the hot water. A description of this function is in section 7.
•
Boiler temperature hysteresis –
value of the boiler temperature hysteresis, at which
maintain mode is exited and heat mode is resumed.
•
DHW temperature hysteresis
– value of DHW temperature hysteresis, at which the pump
returns to hot water mode, or exits maintain mode.
