10.4 Refilling the system
The central heating system can be refilled (semi-)automatically using the
automatic refill device.
See
Refilling the system with the automatic refill device, page 111
Important
Semi-automatic (re)filling means: The boiler indicates that the
system needs to be (re)filled and requests confirmation from the
user.
Automatic refilling means: The system is refilled as soon as the
water pressure is too low.
The installer can set the system to be refilled automatically or
semi-automatically.
The automatic refill device can also be used to manually refill the central
heating installation.
10.4.1 Refilling the system with the automatic refill device
The automatic refill device is placed under the boiler. This device can refill
a central heating system automatically or semi-automatically (after
confirmation by the user) if the water pressure has decreased to a value
lower than the set minimum water pressure. The system is refilled to the
set maximum operating pressure.
1. Check that the boiler is switched on.
Caution
The automatic refill device is only active if the boiler is switched
on.
2. Check that the automatic refill device is on AUTO.
3. If necessary, adjust the parameters for automatic refilling.
4. If the boiler is set to refill automatically, the user does not need to take
any action if the water pressure is too low: refilling starts automatically.
5. If the boiler is set to refill semi-automatically, a message appears on
the display if the water pressure is too low.
5.1.
Press the button to confirm the top-up.
Important
Refilling can only be interrupted if the water pressure is higher
than 0.3 bar.
6. A message will appear on the display when automatic refilling is
complete:
6.1.
Press the key to go back to the main display.
Caution
The warning code A02.33 will be displayed if refilling is taking
too long. The boiler will continue to operate normally.
The warning code A02.34 will be displayed if the boiler needs to
be refilled too often. The boiler will continue to operate normally.
The boiler can interrupt refilling temporarily for normal heating
activities such as producing hot tap water.
For more information, see
Additional information for the automatic refill device, page 67
Fig.104 Automatic refill device
Fig.105 AUTO position
10 Maintenance
7686707 - v.01 - 06092018 AMC 111
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