Potterton Gas condensing boiler, Installation, Operation And Maintenance Manual, Page: 83 / 136

Legionella funct time
(1644) Setting the start time for the legionella function. The legionella function will be
carried out at the first release of the DHW preparation with the setting "---".
Legionella funct setpoint
(1645) Setting the temperature setpoint for killing the germs.
Legionella funct duration
(1646) With this function, the time will be set, during which the legionella function set-
point is activated to kill germs.
If the colder storage temperature rises above the legionella function setpoint by -1
K, the legionella function setpoint is assumed as met and the timer starts running.
If the storage temperature drops by more than the switching diff2 K be-
low the required
legionella function setpoint
, the duration has to be met again. If
no duration has been set, the legionella function has been met immediately on
reaching the
legionella function setpoint .
Legionella function circ pump
(1647) - On : The circulation pump will be switched on in case of active legionella func-
tion.
Caution! There exists a hazard of scalding at the tapping locations in case of acti-
vated legionella function.
Circulating pump release
(1660) - Time program 3 : The circulation pump is released, depending on the time pro-
gramme 3 (see prog.no. 540 to 556).
- DHW release : The circulation pump will be released, when the drinking water
preparation has been released.
- Time program4 : The circulation pump will be released, depending on the time
programme 4 of the local controller.
Circulating pump cycling
(1661) The circulating pump will be switched on for 10 minutes and off for 20 minutes
within the release time.
Circulation setpoint
(1663) In case of undercutting the circulation setpoint (Standard value: 45°C), the circu-
lation pump will be switched on for 10 minutes within the release time. When
reaching the circulation setpoint, but at the earliest 10 minutes later, the pump is
switched off. For this function, the connection of a sensor in the circulation return
is necessary (inputs BX, program no. 5930-5933).
Optg mode changeover
(1680) Using external switching above the entrances H1-H5 it can be selected into which
operating mode is switched into.
-
None : the function is switched off.
8.12 Consumer circuits/
Swimming pool circuit
Flow temp setp cons request
(1859, 1909, 1959)
Setting of the flow setpoint is done with this function, which is effective during
active request of the consumer circuit.
DHW charging priority
(1874, 1924, 1974) Setting, if the connected consumerscircuit pump should be used with priority for
domestic hot water charging.
Programming
396532 05.11 Paramount three 30-115 kW 83