Technical data

Programming
54 POTTERTON COMMERCIAL
120-393 632.4 04.08 Fh
External transformer: This output serves to switch off an external
transformer. The output is activated, when the external transfor-
mer is needed, otherwise it is not activated. The external transfor-
mer should be switched off as often as possible to minimize the
total energy consumption of the system.
Heating circuit pump HC2: This ouput supplies the control signal
for the pump of the 2nd heating circuit. The pump of the 2nd he-
ating circuit is generally attributed to the mixer clip-in (CIM C). If
the 2nd heating circuit is designed as a pumped circuit, the pump
can also be controlled by the prgrammable output.
Circulation pump: Function to control a DHW circulation pump
(see prog. no. 1660).
Warm air curtain function: With this funtion the programmable
output is activated, when the input for the warm air curtain func-
tion has been set. If this input has not been set, also the output
will be set back. The warm air curtain funtion allows the maximum
nominal boiler temperature to be achieved. Furthermore, a hea-
ting request for the heating circuit 2 will be set.
Pump pressureless header: This function controls the pump behind
the hydraulic bypass.
This function is only available for hydraulic diagrams, which have
no further heating circuits apart from heating circuit 1 (pumped
heating circuit).
System pump Q8: This function controls the system pump.
Basic function K2: Function according to hydraulic diagram.
Full DHW charging: The output is activated by this function during
an active charging of the DHW layer storage tank.
This function can only be activated when using a layer storage
tank.
Threshold analog signal RelCl: The output is activated with this
function, when the input signal at the clip-in module is above the
trigger threshold.
This function is only possible in connection with the setting of no-
minal value or power via the input of the clip-in module.
Flue gas damper: This function activates the flue gas damper con-
trol. If the flue gas damper control is activated the burner will only
start operating, when the flue gas damper is open.
Collector pump: The control of a circulating pump is exercised by
this function, when a solar collector is used.
Fan shutdown: This output serves to stop the fan. The output is ac-
tivated, when the fan is needed; otherwise it is not activated. The
fan should be switched off as often as possible, to minimize the to-
tal energy consumption of heating system.
Pump Q1: This output serves the heating circuit pump Q1.
DHW mixing pump Q35: This output is triggered during activated
legionella function to stir e.g. a storage tank with solar support.
Function input H1
(5950)
None: No function.
Modem: The modem function serves to centrally switch off the he-
ating system into stand-by or reduced operation (telephone remo-