Stuart Turner 46721, Installation, Operation & Maintenance Instructions Manual, Page: 12 / 36

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4.14 Floor installation:
1. If installed on a floor ensure the SPU Midi is located so it cannot be kicked
or knocked over.
2. Ensure the floor surface on which the SPU Midi is located is flat and level.
3. If possible locate the unit against a wall for added stability.
4. If the SPU Midi is located in an area that might be subjected to flooding,
mount the SPU Midi on a raised plinth.
4.15 Pipework connections & guidelines:
1. Before connecting the SPU Midi to the system ensure that system flushing
has been performed correctly and all foreign matter, including pipe scale,
has been removed.
Note: Foreign material from the system coming into contact with the
expansion vessel bladder could cause premature failure of the expansion
vessel.
2. Isolating valves MUST be installed on the unit inlet and outlet, before
connection to the flexible hoses to allow the unit to be isolated if required.
The isolation valve on the outlet should be of a lockshield type. See
Fig. 12.
3. A drain valve must be fitted on the outlet of the SPU Midi before the
isolation valve. See Fig. 12.
4. The connection to the heating/chilling system is also made with the
supplied flexible hose and a 15 mm compression fitting. The hose is made
water tight with a sealing washer on assembly, nip tight to 4 to 5 Nm
for water tight seal. (Do not overtighten) .
5. The connection to the heating/chilling system can be made to the left or
right hand side by routing the flexible hose supplied as detailed below.
Fig. 11 Fig. 10
Cable tie