5
4
IMPORTANT FACTS - READ BEFORE COMMENCING PUMP INSTALLATION
4.1 Water Storage Capacity
The hot and cold water storage capacity must be sufficient to meet the flow rates
required by the pumped equipment and any other water using fittings and
appliances, which may be operated simultaneously.
Ensure the pump is primed as described in the priming section before starting,
damage to the shaft seal will result otherwise. See Section 8 - Commissioning.
4.2 Water Temperature
The water entering the pump must be controlled as follows:
•
The maximum allowable water temperature is65 °C.
•
The minimum allowable water temperature is4 °C.
•DO NOT
fit a pump ifthehot water isheated via a method
whereby thewater temperature cannot becontrolled, such as
solar orsolid fuel you must consult the Bristan Care helpline on
0300 026 6273.
4.3 Minimum Flow
For this pump to operate correctly there must be a minimum gravity flow of at
least 0.8 l/min through all outlets to be pumped.
4.4
Pipework
–
General
Secure pipework: Ensure pipework to and from pump is independently supported
& clipped to prevent forces being transferred to inlet and outlet branches of
pump.
Flux: Solder joints must be completed and flux residues removed prior to pump
installation (flux damage will void any guarantee).
Pipework design: Care should be taken in the design of pipework runs to minimize
the risk of air locks e.g. use drawn bends rather than 90° bends.
•DO NOT
introduce solder flux to flexible hoses, pumps or pump
parts manufactured from plastic.
•DO NOT
allow contact with oil or cellulose based paints, paint
thinners or strippers, acid based descalents or aggressive
cleaning agents.
•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 tank at all times.
•DO NOT
bend the flexible hoses beyond 30°. They must be
installed as straight as possible.
•DO NOT
connect this pump to the mains water supply.
