Potterton Paramount three 30 Installation Manual page 103

Type of charging
(5022)
Switching diff
(5024)
Charging time limitation
(5030)
Discharging protection
(5040)
Charging temp max
(5050)
7308272-03 03.14
Charging a layer storage (if exists):
- Recharging: The cylinder is only reheated at every DHW demand.
- Full charging: The cylinder is fully heated at every DHW demand.
- Full charging legio: The cylinder is fully heated if the pasteurisation function is
enabled; otherwise it is only reheated.
- Full charg 1st time day: During the first charging of the day, the cylinder is fully
heated; after this, it is reheated.
- Full charg 1st time legio: The cylinder is fully heated during the first charging of
the day and if the pasteurisation function is enabled; otherwise, it is reheated
Explanations:
- Full charging: The stratification cylinder is fully heated. The heat demand is
triggered by the top cylinder sensor TWF (B3), and ended by sensors TWF and
TLF (B36) or TWF2 (B31). If only one B3 is installed, reheating takes place auto-
matically.
- Recharging: The stratification cylinder is reheated; i.e. only the area up to the
cylinder sensor TWF (B3) is heated. The heat demand is triggered and ended by
the top cylinder sensor TWF (B3).
If the DHW temperature is lower than the current setpoint minus the switching
difference set here, the DHW charging is started. The DHW charging is ended if
the temperature of the current setpoint is reached.
At the first DHW release of the day, a forced charging is performed.
The DHW charging is also started if the DHW temperature is within the switching
difference - as long as it is not less than 1 K under the setpoint.
During the DHW charging, the room heater - depending on the selected charging
priority (prog.no. 1630) and the hydraulic switch – has too little or no power. Of-
ten it is therefore practical to restrict the time of DHW charging.
The function ensures that the DHW pump (Q3) first switches on if the temperate
in the heat generator is sufficiently high.
Application with sensor
The charging pump is first switched on if the heat source temperature is above
the DHW temperature plus the half of the charging increase. If the boiler temper-
ature drops again below the DHW temperature plus 1/8 of the charging excess
during the charging, the charging pump is again switched off. If two DHW sen-
sors for the DHW charging are parameterized, the lower temperature is consid-
ered for the discharge safety function (normally the DHW sensor B31).
Application with thermostat
The charging pump is first switched on if the boiler temperature is above the
DHW nominal setpoint. If the boiler temperature drops below the DHW nominal
setpoint minus the DHW switching difference, charging pump is again switched
off.
Off: the function is switched off.
Always: the function always affects.
Automatically: the function only takes effect if the heat generator cannot deliver
heat or is not available (malfunction, heat source block).
With this setting, the maximum charging temperature for the connected storage
of the solar system will be limited. If the DHW-charging value is exceeded, the
collector pump switches off.
The collector pump can be re-activated by the collector overheating protecting
function see prog.no. 3850) until the storage safety temperature has been
reached.
Paramount three 30-115 kW
Programming
103