thermital 20109806, Installation And Maintenance Manual

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35
ENGLISH
Storage cylinder parameters
Parameter Description Range
Default set-
ting
Resolution
P0 Boiler temperature needed for domestic hot water production. 75 ÷ 85/95 82 ± 1°C
P1
This parameter determines the difference between the boiler temper-
ature setting and the storage cylinder temperature setting needed
to activate the storage cylinder pump during domestic hot water
production
2 ÷ 10 4 ± 1°C
P2
This parameter determines the difference between the boiler temper-
ature required for domestic hot water production and the boiler tem-
perature needed to start the burner immediately. The setting avoids
excessive drops in temperature when hot water is drawn off.
5 ÷ 20 15 ± 1°C
P4
This parameter determines how much the boiler temperature setting
must be increased with respect to the storage cylinder temperature
setting when domestic hot water is required.
10 ÷ 30 20 ± 1°C
P4
This determines whether overtemperature in the boiler is dispersed
to the storage cylinder or to the central heating system. If set to 1,
the system disperses excess heat in a differentiated way, i.e. on the
basis of need. If set to 0, the system disperses excess heat only to
the storage cylinder.
0 ÷ 1 0 ± 1 digit
P5
This determines whether domestic hot water production has priority
over the central heating or not. If this parameter is set to 1, when
domestic hot water is needed at the same time as central heating,
the system prioritises domestic hot water production. If it is set to 0,
the system heats the central heating circuit and the storage cylinder
in parallel.
0 ÷ 1 1 ± 1 digit
P6
This determines whether the anti-legionella function is enabled or
not. If set to 1 (default) the system heats the storage cylinder to 65°C
every 168 hours. If set to 0, the anti-legionella function is disabled.
0 ÷ 1 0 ± 1 digit
P7
This determines the boiler temperature needed for domestic hot
water production. If set to 0, the boiler temperature needed for do-
mestic hot water production is equal to the storage cylinder setpoint
+ the value of storage cylinder parameter P3.
If set to 1, the boiler temperature needed for domestic hot water
production is the same as the value set in storage cylinder parame-
ter P0.
0 ÷ 1 1 ± 1 digit
P8 Parameter not used
P9
This determines the difference between the storage cylinder setpoint
and the actual storage cylinder temperature that generates a heat
request.
2 ÷ 7 4 ± 1°C
PA Parameter not used
PB Parameter not used
PC Parameter not used
PD Parameter not used