Wolf CGU-2-18 Installation And Maintenance Instructions Manual page 27

Programmable
Input E1
Parameter HG13
HG13
1
Factory setting: 1
Setting range: 1 to 10
Explanation
Room thermostat
Closed contact is a pre-requisite to enable the burner in heating mode.
1
No function (blocked) for DHW mode. No function (blocked) for emissions test mode and frost protection, no error message.
Open contact blocks the enabling of the heating and the boiler pump (pump run-on time)
Maximum thermostat / system pressure switch
Closed contact is a prerequisite for enabling burner in central heating, DHW and emissions test mode. When the
2
contact is opened the boiler switches off and the pump run-on begins.
A fault message is generated.
Ventilation damper
Function monitoring of the ventilation damper with zero volt contact
5
Closed contact is a prerequisite for enabling burner in central heating, DHW and emissions test mode
Output A1 must be programmed to 7, ventilation damper function
DHW circulation pushbutton
6
After the DHW circulation pushbutton is activated, output A1 is switched on for 5 minutes, if output A1 is programmed as
DHW circulation pump (A1 = 13)
Manifold sensor
A manifold sensor (5 K-NTC) is connected at E1. The fl ow temperature control in heating and DHW mode (pump
7
operating mode 1) or only in heating mode (pump operating mode 2) no longer relates to the fl ow sensor but rather the
manifold sensor. Safety functions and emissions test mode remain at the fl ow sensors. In case of break or short circuit
of the manifold sensor, the fl ow sensor takes on the temperature control. Observe parameter HG 06
Burner block (BOB)
Operation without burner
Closed contact, burner blocked
8
Heating circuit pump and cylinder primary pump run in normal operation
In emissions test mode and frost protection the burner is enabled
Open contact enables the burner again
External burner demand
Closed contact, set FT is set to TKmax fl ow hysteresis
10
Demand also functions in standby; cycle block active
(Control of output A1 when parameter output A1 = 14)
0, 3, 4, 9, 11 are without function
3062347_0309
Displaying / modifying control parameters
with Wolf control accessories
The functions of input E1 can only be scanned and adjusted with Wolf control
accessories with eBUS capability.
The following functions can be allocated to input E1:
The electrical control to input E1 must be made with a zero volt contact. Otherwise,
use an on-site relay for potential separation.
27