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4 TERMINOLOGY
4.11 System Designation:
It is important to understand what upstream and downstream refers to before
starting the installation.
4.12 Upstream
The term ‘Upstream’ refers to the system configuration from the consumer’s
stopcock to the point where the supply reaches the inlet port of the Mainsboost
Plus Pump.
4.13 Downstream
The term ‘Downstream’ refers to the system configuration from the outlet tapping
on the Mainsboost Plus Pump, along the distribution header (if configured in
this way) and into the distribution pipework and outlets. This includes hot and
cold services where both are present (see Fig. 8).
Fig. 8 System designation
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