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5 -
MAINTENANCE
The appliance must be systematically controlled at regular intervals to
make sure it works correctly and efficiently and conforms to legislative
provisions in force.
The frequency of controls depends on the conditions of installation and
usage, it being anyhow necessary to have a complete check carried
out by authorized personnel from the Servicing Centre every year.
- Check and compare the boiler's performance with the relative
specifications.
Any cause of visible deterioration must be immediately identified and
eliminated.
- Closely inspect the boiler for signs of damages or deterioration,
particularly with the drainage and aspiration system and electrical
apparatus.
- Check and adjust – where necessary – all the burner's parameters.
- Check and adjust – where necessary – the system's pressure.
- Analyze combustion. Compare results with the product's specification.
Any loss in performance must be identified and corrected by finding
and eliminating the cause.
- Make sure the main heat exchanger is clean and free of any residuals
or obstruction.
- Check and clean – where necessary – the condensation tray to
make sure it works properly.
IMPORTANT: always switch off the power to the appliance and
close the gas by the gas cock on the boiler before carrying out any
maintenance and cleaning jobs on the boiler.
Do not clean the appliance or any latter part with flammable substances
(e.g. petrol, alcohol, etc.).
Do not clean panelling, enamelled and plastic parts with paint solvents.
Panels must be cleaned with ordinary soap and water only.
b
After standard and non-standard maintenance work, fill the
siphon, following the instructions under "IGNITION AND
OPERATION".
6 -
CIRCULATOR SETTINGS
Circulator residual discharge head
The boilers is equipped with an already hydraulically and electrically
connected circulator, whose useful available performance is indicated
in the graph. The circulator comes set from the factory with a 6 metre
discharge head curve.
The boiler is equipped with an anti-blocking system which starts up an
operation cycle after every 24 hours in standby with the mode selector
in any position.
b
The "antiblocking" function is active only if the boiler is electrically
powered.
a
Operating the circulator without water is strictly forbidden.
If you need to use a different curve you can select the desired level on
the circulator.
Below the main characteristics and the ways to set up their desired
operation are listed.
User interface (fig. 48)
The user interface is made up of a button (A), a two-coloured red/green
LED (B) and four yellow LEDs (C) arranged in a row.
The user interface allows the operating performance to be viewed
(operating status and alarm status) and it also allows the circulator
operating modes to be set.
The performance, indicated by the LEDs (B) and (C) is always visible
during normal operation of the circulator whereas the settings can be
carried out by pressing the button (A).
Operating status indication (fig. 48)
When the circulator is in operation the LED (B) is green. The four yellow
LEDs (C) indicate the electrical energy consumption (P1) as shown in
the following table.
LED status
CIRCULATOR status
Green LED on +
Operating at minimum
1 yellow LED on
Green LED on +
2 yellow LEDs on
Green LED on +
Operating at medium-
3 yellow LEDs on
Green LED on +
Operating at maximum
4 yellow LEDs on
(*) For the power (P1) absorbed by the circulator see the indications in
the "Technical Data" table.
Consumption in
% of MAX P1 (*)
0~25
Operating at
25~50
minimum-medium
50~75
maximum
Alarm status indication (fig. 48)
If the circulator has detected one or more alarms the two-coloured LED
(B) will be red. The four yellow LEDs (C) indicate the type of alarm as
shown in the following table.
LED status
Red LED on +
1 yellow LED
on (LED 5)
Red LED on +
1 yellow LED
on (LED 4)
Red LED on +
1 yellow LED
on (LED 3)
b
If there are several alarms the circulator will display only the alarm
with the highest priority.
Display of active settings (fig. 48)
With the circulator powered, press briefly on the button (A) to view
the active configuration of the circulator. The LEDs indicate the active
settings.
In this phase no variations can be made to the circulator configuration.
Two seconds after the button (A) has been pressed the user interface
returns to the normal operating status display.
Key lock function (fig. 48)
The purpose of the key lock function is to prevent accidental
modifications to the settings or the improper use of the circulator.
When the key lock function is activated, long-pressing the button (A)
is prevented. This prevents the user from entering the circulator's
operating modes setting section.
Enabling/disabling the key lock function is achieved by pressing the
button (A) for more than 10 seconds. During this step all of the LEDs
(C) will flash for 1 second.
Changing the operating mode (fig. 48-49)
In normal operating conditions the circulator works with the factory
settings or the last settings carried out.
To change the configuration:
- ensure that the key lock function is deactivated
- press the button (A) for more than 2 seconds until the LEDs begin
to flash. Short-press the button (A) within 10 seconds and the user
interface will move on to display the next settings. The various
available settings will appear in a cyclic sequence
- if the button (A) is not pressed, the last setting will be stored
- if the button (A) is pressed you can move back to the "active settings
display" again and check that the LEDs (B) and (C) indicate (for 2
seconds) the last setting carried out
- if the button (A) is not pressed for more than 2 seconds the user
interfaces switches to the "Operating status display"
- the available settings are shown in fig. 50 along with the related
representation of LED (B) and (C).
IMPORTANT (fig. 52)
If the 3 (5 metres) or 4 (4 metres) curves are set the bypass must
be replaced with the one supplied, following the procedure indicated
below:
- remove boiler electrical power by setting the system's main switch to
off
- close the system taps and empty the boiler heating circuit
- extract the bypass body cover fixing spring (D)
- extract the bypass body cover (E)
- replace the bypass valve (F) with the one included
- refit the bypass body cover and its spring.
100
Mynute Green E C.S.I. - R.S.I.
ALARM
Status
description
CIRCULATOR
Start attempt
The drive shaft
every 1.5
is jammed
seconds
Warning only.
Low input
The circulator
voltage
continues to
operate
Electrical power
The circulator
supply fault or
is stopped
faulty circulator
Possible
SOLUTION
Wait or unjam
the drive shaft
Check the
input voltage
Check the
electrical power
supply or replace
the circulator
13
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