Potterton Eurocondense three, Programming Manual, Page: 66 / 120

- Heat generation lock : locking of the boiler in case of closed contact at H1/H4/
H5/H2.
- Error/alarm message : Closing the inputs H1/H2 gives a control unit-internal
fault message, which will also be signalled via a relay output, programmed as an
alarm output or in the remote management system.
- Consumer request VK1/VK2/VK3 : The set flow temperature setpoint is activated
via the connecting terminals (e.g. a ventilation heater function for door curtain
units).
Note: The setpoint is set under programme number 1859/1909/1959.
- Excess heat discharge : an active excess heat discharge enables, for example, an
external source to force the consumer (heating circuit, DHW storage tank, pump
Hx) to take up the excess heat. For each consumer it can be set by the parameter
excess temperature discharge whether the forced signal is paid attention to and
therefore should take part in the heat discharge or not.
- Release swi pool solar : This function enables the solar swimming pool heater to
be released externally (e.g. via a manual switch or the solar charging priority to
be specified as compared to the storage.
- Operating level DHW/HC's : The operating level can be set via the contact instead
of via the internal time switching program (external time switching program)
- Room thermostat HC's : With the input a room thermostat request can be gene-
rated for the set heating circuit.
- DHW thermostat : Connection of the DHW thermostat.
- Pulse count : By querying the input the low frequency pulse, e.g. for flow measu-
rement is recorded.
- Checkb sign flue gas damper : Checkback via input H1 in case of activated flue gas
damper control.
- Start prevention : With this input a burner start can be prevented.
- Consumer request VKx 10V : The application nodes external load x receives a vol-
tage signal (DC 0-10 V) as heat request. The linear curve is defined via two fix
points (voltage value 1/function value 1 and voltage value 2/function value 2).
- Preselected output: The source receives a voltage signal (DC 0 - 10 V) as output
request. The linear curve is defined via two fix points (voltage value 1 / function
value 1 and voltage value 2 / function value 2).
- Flow measurement : Here a flow sensor can be connected which indicates the
flow volume via a frequency.
Contact type H1/H4/H5/H2
(5951, 5971, 5978)
With this function, the contacts can be set as resting contact (contact closed,
must be opened for activating the function) or as working contact (contact open-
ed, must be closed for activating the function).
Voltage value 1 H1
(5953)
TECHEM-function: the following value has to be set: 9,5 V
Frequency values 1/2 H4
Function values 1/2 H4
(5973-5976)
The linear sensor curve is defined over two fixed points. The setting is done with
two parameter pairs for function value and frequency value (F1 / U1 and F2 / U2).
Programming
66 Gas-fired fuel value boiler EuroCondense three 125-300 kW 358 488 09.10