Potterton Gas condensing boiler Installation, Operation And Maintenance Manual page 91

Charging temp min swi pool
(3818)
Charging prio storage tank
(3822)
Charging time relative prio
(3825)
Waiting time relative prio
(3826)
Waiting time parallel op
(3827)
Delay secondary pump
(3828)
Collector start function
(3830)
396532 05.11
Temperatures that the collector must have at the least in order to begin charging
a swimming pool.
For several combined exchangers in the system, the loading sequence for the
combined storage tank can be defined by setting the loading priority.
None: each storage tank is loaded alternately for a temperature increase of 5°C,
until each setpoint has reached level A, B or C (see Tab. 8 (Page 91)). If all set-
points are reached, the setpoint of the next level is approached.
DHW storage tank: The DHW storage tank is preferred during solar charging. It is
charged in each level A, B or C (see below) with priority. Only afterward is the fol-
lowing consumer in the same level charged. As soon as all setpoints in one level
are reached, the ones in the next level are approached, whereby the DHW storage
tank again has priority.
Buffer storage tank:The buffer storage tank is preferred during soar charging. It is
charged in each level A, B or C (see Tab. 8 (Page 91)) with priority. Only after-
ward is the consumer next to it in the same level charged. As soon as all setpoints
in one level are reached, the ones in the next level are approached, whereby the
buffer storage tank again has priority.
Tab. 8: Storage tank setpoints
Level DHW storage tank
A 1610 Nominal setpoint
5050 DHW Charging temp max
B
DHW storage tank temp max (set
C
by factory: 90°C)
If the preferred storage tank corresponding to the charging control not be charg-
ed, during the time set here the priority goes to the next storage tank or the
swimming pool.
The transfer of the priority of the time set here is delayed.
With sufficient solar capacity, with use of solar charging pumps a parallel opera-
tion is possible. During this the next storage tank in the priority sequence can be
loaded parallel to the current loaded storage tank. The storage tank switching on
for parallel operation can be delayed and staged by the value set here.
So that possible existing cold water can be first rinsed through the pump in the
primary circuit, the operation of the secondary pump of the heat exchanger can
be delayed.
If the temperature at the collector with the pump turned off is not be measured
correctly (e.g. with vacuum tubes), then a periodic switching on of the pump is
possible.
The temperature on a certain collector cannot be measured correctly, if the pump
is switched-off. For this reason, the pump must be activated from time to time.
Paramount three 30-115 kW
Programming
Buffer storage tank
Buffer setpoint (drag-pointer)
4750 Buffer storage tank charging
temp max
Buffer storage temperature max
(set by factory: 90°C)
91