Boss AX1-2.5E, Operation & Maintenance Manual

Page: 10 / 44

10
Mini (MX) Clearance and Connection Requirements
Connection Size Notes
Mains
Water Feed
½” BSP M
An isolation valve must
be installed on the mains
water feed for servicing.
Break Tank
Overflow
22mm
Guidance on drainage
requirements should be
obtained from the local
water authority.
System
Connection
¼” BSP F
The pressurisation unit
and expansion vessel
should be connected to
the system at the same
point.
The point of connection
should be in the system
return, on the suction
side of the circulation
pump.
Non-return valves,
pressure reducing valves
and RPZ valves must not
be used.
Min 50mm