EHC
Fusion E10 Combi
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Installation and technical manual
Page 11
8.
Installation: Plumbing/ Cont..
Balanced cold connection
If the system includes showers, bidets or monobloc taps, then a balanced cold supply is
necessary.
Do not use monobloc mixer tap or showers if the balanced cold connection is not
used. Outlets of this type can back-pressurise the unit and result in discharge.
A 22mm balanced cold mains outlet can be found on the control set supplied, (see diagram
below)
Use the balanced cold mains outlet from the inlet control set (as shown in the illustration) to
feed all mixer taps / showers, instead of connecting them to the cold main.If the control set
supplied with your fusion E10 combi unit is of the two part type it can be split into its two
main assemblies. Site the pressure reducing valve immediately after the incoming cold
mains stopcock (typically under the kitchen sink). All outlets in the house will be set to 3 bar
and thus automatically balancing the system.
The expansion relief valve section must still be
mounted just above the TPRV on the cylinder (see diagram below).
Hot Water pipework
Ensure the first part of the hot water pipework is run in 22mm pipe. This can reduce to
15mm/10mm depending on the type of tap etc. Your aim should be to reduce the volume of
the hot draw off pipework to a practical minimum so that the time taken for the hot water is
as quick as possible.