Miura MP1-200, Operation Manual

Page: 31 / 63

SECTION 3 OPERATION
23
2.2.4 Setting Cumulative Combustion Time
Boilers are prioritized for the automatic rotation
(*)
function according to this setting. Under the
automatic rotation
(*)
, the priorities
(*)
of the boilers are determined in ascending order of the
cumulative time that is set here.
1) Press the “SELECT” switch as many times as
needed to display the cumulative combustion
time.
2) Press the “UP” and “DOWN” switches
simultaneously, then the first 3 digits start
blinking.
3) Press the “UP” or “DOWN” switch to set a value.
4) Press the “SELECT” switch, then the lower two
digits start blinking.
5) Press the “UP” or “DOWN” switch to set a lower
digits.
6) Press the “SELECT” switch to finish the setting.
NOTE
In the system where old and new boilers coexist, you can adjust the cumulative combustion
time to make the following operation implementable: Give higher priorities
(*)
to new boilers all
the time. Divide old boilers and new boilers into separate groups for automatic rotation
(*)
.
Example: When two new boilers (No.
(*)
1 and 2) and two old boilers (No.
(*)
3 and 4)
coexist.
For example, set the cumulative combustion time for the boiler No.
(*)
1 and 2
to 0 and the boiler No.
(*)
3 and 4 to 1000.
Due to a shorter cumulative combustion time of the new boilers than that of
the old boilers, the new boilers (No.
(*)
1 and 2) are given the first and second
priorities
(*)
respectively after automatic rotation
(*)
. The old boilers are given
the third and fourth priorities
(*)
.
There is no difference in the cumulative combustion time between the boiler
No.
(*)
1 and 2, and between No.
(*)
3 and 4, respectively. The rotation
(*)
is
performed to equalize the cumulative combustion time of boiler No.
(*)
1 and 2,
and boiler No.
(*)
3 and 4 respectively.
This condition will be held until the cumulative combustion time of the new
boilers exceeds that of old boilers. To hold this condition, set the cumulative
combustion time again.