Pipework - Stuart Turner Showermate Series Installation Instructions Manual

STEP 2: PIPEWORK (General)
WARNINGS:
Ensure pipework to and from pump is independently supported to
prevent forces being transferred to inlet and outlet branches of pump.
Do not introduce solder flux to pumps or pump parts manufactured
from plastic. All solder joints should be completed and flux residues
removed prior to pump connection.
Do not allow contact with oil or cellulose based paints, paint thinners
or strippers, acid based descalents or aggressive cleaning agents.
Do not allow scale or debris to enter pump. Fit inline strainers to
eliminate the problem in systems at risk.
Always install isolating valves to both suction and delivery pipework.
Do not install a non-return valve, or devices
which contain non-return valves, in the
suction (inlet) pipework to the pump. The
pump must be free to vent to the supply
tanks at all times.
It must be ensured that the water storage capacity is sufficient to meet the flow rates
required by the pump and any other water using fittings and appliances, which may be
operated simultaneously.
As a rule of thumb: assuming a cold water temperature of 10°C and a hot water
temperature of 65°C.
A 6-minute shower using 10 litres/min will consume 40 litres of hot water and 20 litres
of cold. This means the total quantity of water used from the cold water storage tank
will be 60 litres (40 + 20).
A 10-minute shower using 15 litres/min will consume 100 litres of hot water and 50
litres of cold. This means the total quantity of water used from the cold water storage
tank will be 150 litres (100 + 50).
The pipework feeds to the storage tank should be of adequate size to ensure
replenishment rate of tank is sufficient to meet the needs of the pump.
Care should be taken in the design of pipework runs, to minimize the risk of air locks.
The pump (or pumps) should be supplied with balanced pressure hot and cold
supplies.
To prevent loss of water pressure through pipework use 22 mm pipework throughout.
Any bend requirements should be achieved by hand drawing the tube or by the use of the
appropriate bend fittings. All pipework should be securely clipped.
Isolating valves (not supplied) should be fitted in the suction and delivery pipework to
enable easy isolation and access to the pump.
When pump is to be installed in areas where there is a risk of debris or scale build up
within the system, it is recommended that both hot and cold inlets are fitted with inline
strainers, (these are not supplied with the kit).
- 5 -
Cont....