Wolf CGB-2 Series Installation Instructions For Contractors page 43

Parameter HG14
Function output A1
According to DVFG-TRF 2012 chapter 9.2, an additional on-site LPG valve is not required if it has been ensured that no
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potentially hazardous quantity of gas can escape from the appliance. The CGB-2(K)-14/20/24 gas boilers meet these
requirements.
3064810_201804
24. Parameter description
The functions of output A1 can only be checked and set directly on the boiler under
parameter HG14 using the AM display module or BM-2 programming module.
Display Designation:
none none (factory setting)
Output A1 is ignored by the control unit.
Circ 100 DHW circulation pump 100 %
Output A1 is switched by the time program in the control accessory if
DHW circulation has been enabled.
Output A1 is constantly switched if no accessory controller is installed.
Circ 50 DHW circulation pump 50 %
Output A1 is switched cyclically by the time program in the control
accessory if DHW circulation has been enabled.
5 minutes ON, 5 minutes OFF Output A1 is switched cyclically if no
accessory controller is installed.
Circ 20 DHW circulation pump 20 %
Output A1 is switched cyclically by the time program in the control
accessory if DHW circulation has been enabled.
2 minutes ON, 8 minutes OFF Output A1 is switched cyclically if no
accessory controller is installed.
Flame Flame detector
Output A1 is activated after a flame has been recognised.
Zirkomat Zirkomat (DHW circulation remote control)
Output A1 is activated for 5 minutes when input E1 closes. If output
A1 Zirkomat is configured, input E1 is automatically set to 'DHW
circulation remote control' and is blocked for further settings. When
input E1 has switched off and 30 minutes have elapsed, the remote
control function is re-enabled for the next operation.
Flue gas Flue gas/ventilation air damper
damper Output A1 is activated first before each burner start. The burner will,
however, only be enabled after input E1 has been closed. Closed
contact E1 is a pre-requisite for enabling burner in central heating,
DHW and emissions test mode.
If output A1 is activated and does not close input E1 within 2 minutes,
a fault is generated (FC 8).
If output A1 is deactivated and does not open input E1 within
2 minutes, a fault is generated (FC 8).
If output A1 is configured for a flue gas damper, input E1 is
automatically programmed for a flue gas damper and blocked for other
settings.
Alarm Alarm output
When a fault has occurred and 4 minutes have passed, the alarm
output is activated. There is no notification of warnings.
Ext vent. External ventilation
Output A1 is activated inversely to the flame signal. Switching OFF
external ventilation (e.g. extractor fan) during burner operation is
required only if the boiler is operated in open flue mode.
Fuel External fuel valve
valve Activates an additional fuel valve during burner operation.
Output A1 is activated from pre-flushing of the device until burner
shutdown.
HCP Heating circuit pump (can only be enabled via HG40 System
configuration 12)
If parameter HG40 System configuration is set to 12, output A1 is
automatically enabled as the output for a heating circuit pump (direct
heating circuit). This function cannot be selected separately via HG14.
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