7.2.1.3
ALOWED TEMPERATURE DEVIATION
–
The maximum allowed difference between the boiler temperature set value and
actual boiler temperature. Comparison begins after 6 hours from the start of the program. The value of this parameter is expressed in
ºC. To enter the submenu press
''OK''
until the flashing ''ALOWED TEMPERATURE DEVIATION ''.
The factory default setting is 5 ºC. Use the
''+''
and
''-''
button, to adjust the value of this parameter between
2 ºC ÷ 10 ºC
,
with steps from 1 ºC (image 37).
If the absolute value of the difference between the boiler temperature set value (for running program sequence), and actual
boiler temperature, exceeds the set value of parameter, triggers the timer to measure the time interval in which is difference
greater then allowed (See the next chapter).
image 37
graph 1
7.2.2.
PERMITTED TIME DEVIATION
–
Maximal allowed time interval in which is difference between the boiler temperature
set value and actual boiler temperature greater than adjusted value from previous chapter. So, this parameter is in relation with parameter
from previous chapter. Measuring starting when is difference between temperature set value, and actual boiler temperature, exceeds the
adjusted value (graph 1). The factory default setting for this parameter is 3h. Use the
''+''
and
''-''
button, to adjust the value of this
parameter between
1h ÷ 24h
with steps from 1h (image 38).
If the difference between the set temperature and the achieved temperature is reduced below the
˝ALOWED TEMPERATURE
DEVIATION˝ (permitted in the preceding paragraph), while ˝PERMITTED TIME DEVIATION˝ has not expired, the program
continues normally running.
If the difference between the set value and the achieved temperature can't reduced below the
˝ALOWED TEMPERATURE DEVIATION˝
(permitted in the preceding chapter),
and the duration of deviation is greater then ˝PERMITTED TIME DEVIATION˝ , the CPU abort
maintenance of set temperature (defined in program), and the program that was in progress is considered unrealized. Device goes to
˝No frost˝
mode, in order to avoid freezing water in the system. The device continues to maintaining a temperature of
10 ºC
(settings are
not allowed), and screed drying program still memorized all data. Display will be appear symbol of snowflake and symbol of error
E9
,
which means: program is failed, device only protect yourself and instalation against freezing.
image 38 image 35a
Screed drying programs
