thermital 20109806, Руководство по установке и обслуживанию, Страница: 33 / 60

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ENGLISH
This allows you to view and modify the boiler parameters (P1,
P2 etc.):
- Press the key;
- Press the key to scroll through the boiler parameters;
- Press the and keys to change the value of the
parameter;
- Press the mode key to return to the initial display.
To switch between the boiler parameters and those of the stor-
age cylinder, press the or key. (The parameter number
always starts from 0).
The or LED lights to show which parameters are being
displayed.
Boiler parameters
Parameter Description Range
Default set-
ting
Resolution
P0
The minimum boiler temperature at which the central heating circuit
pump can start. The minimum boiler temperature that the user can
set is always 10°C above the value of this parameter
20 ÷ 55 48 ± 1°C
P1
Maximum boiler temperature that the user can set. This value can be
adjusted between a minimum temperature equivalent to P0+10°C
and a maximum temperature of 85°C or 95°C, with a default of 75°C
(see boiler parameter 8).
P0+10 (min
30) ÷ 85/95
75 ± 1°C
P2
This determines the difference between the desired boiler tempera-
ture and the boiler temperature needed to start up the burner (or the
first stage of a two-stage burner)
3 ÷ 9 4 ± 1°C
P4 Parameter not used
P4 Parameter not used
P5 Parameter not used
P6
This parameter shows the total number of hours for which the burner
has functioned. This is a read-only parameter. Its maximum value
is 39999 hours. The value is determined using the decimal points
on the display. The two digits to the right represent thousands and
hundreds of hours. The combination of the decimal point on the right
and that in the middle represents a value in tens of thousands of
hours to be summed to the previous value
0 ÷ 39999 x100/h
P7
This defines a threshold in hours of burner functioning after which
the system will display the "service" warning light to show that main-
tenance is required
0 ÷ 30
(3000h)
12 x100/h
P8
The maximum boiler temperature that can be set with parameter P1
If P8=0, maximum temperature setting in P1max=85
If P8=1, maximum temperature setting in P1max=95
0 ÷ 1 1 ± 1 digit
P9
Determines whether the boiler heat maintenance function is active or
not. If this parameter is set to 1, the boiler uses “total shut-down” log-
ic and shuts down completely if no heat requests are received from
the central heating or domestic hot water systems. (The frost protec-
tion function is activated according to its setting.) If this parameter is
set to 0, total shut-down is deactivated and the boiler maintains the
temperature set by the user even if no heat request is received.
0 ÷ 1 1 ± 1 digit
PA
If set to 1, all the pumps in the system are switched on briefly once
every 24 hours of continuous inactivity.
This “anti-seize” function eliminates the risk of pump seizure as a
result of lime scale forming after long periods of disuse.
0 ÷ 1 1 ± 1 digit
PB
This parameter lets you restore factory (default) boiler settings. To do
so, set the parameter to 1 then exit boiler parameter setting mode.
The system displays the message “dEF” for about 3 seconds to indi-
cate that the default boiler parameters have been restored
0 ÷ 1 0 ± 1 digit
PC Parameter not used
PD
This parameter shows the number of times the burner has started
up.
0 ÷
9,9(39,999h)
0 x100/h