1.2 Connection to the system
The Mikrofill Maxi is connected to the heating/chiller system by way of the 15mm outlet valve, the pipework from the unit
should be made in 15mm copper or similarly approved plastic pipework. A suitably sized expansion vessel should be
incorporated into the system at this point. Please refer to typical installation diagram on page 3. If you require any
assistance regarding vessel sizing please contact our technical sales department. The final connection into the
heating/chiller systemshould be sized accordingly, recommendations are shown below:
Vessel size up to 100L 1/2" (15mm) expansion pipework.
Vessel size up to 300L 3/4" (22mm) expansion pipework
Vessel size up to 1000L
1" (28mm) expansion pipework.
For vessel sizes in excess of 1000L capacity please contact our technical sales department.
IMPORTANT NOTE
The expansion vessel nitrogen/air charge must be set at the same pressure as the cold fill pressure of the system.* All
Mikrofill expansion vessels are factory commissioned to the correct pressure.
* When the installed height of the expansion vessel is different to that of the MAXI then please contact our service
department who will advise on the nitrogen/air charge.
1.3 Overflow connection
The Maxi is supplied with a 3/4" bsp plastic overflow (warning pipe) connection which should be led to a drain and be
visible at point of discharge, MIKROFILL SYSTEMS LTD cannot accept any responsibility for flood damage caused by failure
to connect the overflow.
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