15
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Helpful guidelines
Water starvation protection, pipework arrangements and
stored hot water
Water starvation protection
In systems where it is absolutely not possible
to increase the usable cold water storage
capacity to meet the increased demand
of a pumped system; a water starvation
protection unit (WSP) may be considered.
The WSP is a Salamander level switch which
must be positioned 102mm higher than the
highest outlet from the cold water storage
tank. When the water level drops too far the
WSP will switch off the pump until the cold
water storage level is recovered.
Figure 25: Water starvation protection unit
(WSP)
102mm
Outlets
Water starvation
protection unit (WSP)
Shower head size vs bar pressure
The size of a shower head dictates the bar
pressure of the pump required to deliver the
expected performance of the shower.
For pumps positioned above
the hot outlet on the hot water
cylinder
An anti-gravity loop (AGL)of at least 400mm
(ideally using swept bends) must be used
when the pump is sited above the dome
of the hot water cylinder as it prevents air
tracking up into the pump chamber and
back siphoning of the water again, creating
air in the pump chamber.
An approved side or top entry flange must
be used in these circumstances for the hot
water connection to the cylinder, with the
Essex or alternative side entry flange being
the recommended method of connection.
If the pump experiences aeration or low
pressure as a result of poor flow to the
pump with the use of a top entry flange,
a side entry or Essex Flange may become a
requirement.
Shower head diameter Bar pressure
Up to 5cm 1.5 bar (150 kPa)
5-10cm 2.0 bar (200 kPa)
10-12.5cm 2.5 bar (250 kPa)
More than 12.5cm 3.0 bar (300 kPa)
Please be advised due to lack of cold water
storage with Elson and Fortic (type) tanks,
our pumps may not be suitable.
It is advisable to contact PumpWise before
installing the pump on 0191 516 2002,
otherwise it may affect your warranty.
x175810_Salamander_p4_vw.indd 15 30/03/2017 15:06
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