16
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Warix flange
A The Vent connection MUST be from side
in Warix Flange.
B The supply connection to the pump
MUST BE FROM THE TOP of the Warix
Flange via a 22mm compression elbow
and thereby avoid inverted loops.
C In systems where there are one
bathroom and an en-suite shower.
Or two or more bathrooms the cold
feed to the cylinder MUST be in
28mm pipework.
Figure 30: Approved flanges
H
MAX
60º
Never less than
1.2m for any
top entry flange
Warix flange
C
B
A
Unpumped
outlets
Usable capacity
minimum 50 gallons
per bathroom
Fig 26 Warix flange
OLD STYLE DO NOT USED
MAX
60˚C
H
Never less than
1.2m for any
top entry flange
Warix flange
Unpumped
outlets
Usable capacity
minimum 50 gallons
per bathroom
A
B
C
Inverted loops
An inverted loop in the supply pipe-work
to the pump, particularly on the hot side as
illustrated; is likely to:
• interfere with the initiation and smooth
operation of the pump.
• restrict the supply water to the pump
and risk internal mechanical damage.
C
H
Inverted loop
Fig 27 Inverted loops
OLD STYLE DO NOT USED
Inverted loop
WRONG
C
H
Figure 31: Inverted loops
OLD STYLE DO NOT USED
Fig 28 Water hammer
Washing machine
Pressure vessel
Primatic cylinders and Andrews type
water heaters are not suitable for pumped
systems.
Water hammer protection
Water hammer most commonly occurs in
systems where there are long pipe runs
supplying solenoid activated appliances
e.g. washing machines or outlets with quick
acting/turn taps/ valve(s). The harmful
effect of water hammer shock waves can
be cushioned by fitting a pressure vessel
unit, into the supply pipework as close as
possible to the outlet from which the shock
waves are originating.
Figure 32: Water hammer protection