16
17
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Figure 26: Anti-gravity loop (AGL)
MAX
60°C
Outlets
Inlet
Min
600mm
Usable capacity
minimum 50 gallons
per bathroom
Vent and other
services
Non-return valve
hot outlet only
except ESP pumps
Air vents, both
hot and cold
No Stop Essex Flange
MUST be used with an
anti gravity loop at least
250mm in depth
C
H
Fig 23 Anti gravity loops
OLD STYLE DO NOT USED
Vent and
other
services
Inlet
No Stop Essex Flange
MUST be used with an
anti-gravity loop at least
250mm in depth
Cold water storage
H
C
Air vents,
both hot
and cold
MAX
60˚C
600mm or
less possible
negative head
Outlet
Outlet
Non-return
valve hot
outlet only
except ESP
pumps
Combi boilers and water heaters
As these appliances are invariably supplied
directly from the cold mains – they are not
normally suitable for booster pumps. The
exceptions are featured in Figure 14 on
page 10.
Figure 27: Combi boilers
Combi
boiler
Incoming
water main
C
H
Fig 24 Combi boilers
OLD STYLE DO NOT USED
Incoming
water main
WRONG
Combi
boiler
C
H
Horizontal cylinders
As horizontal (torpedo) cylinders are
problematic for boosted systems consult
PumpWise for guidance and correct use of
an approved top entry flange.
Use any of the
approved top
entry flanges
Usable capacity
minimum 50 galls
per bathroom
C
MAX
65°C
H
Fig 25 Horizontal cylinders
OLD STYLE DO NOT USED
Use any of the
approved top
entry flanges
Usable capacity
minimum 50 galls
per bathroom
MAX
65˚C
C
H
Approved flanges (cylinders)
The 22mm No Stop Essex and the other
approved top entry flanges with extension
pipes into the cylinder represent the best
known means of ensuring minimal aeration
of the hot supply water to the pump. The No
Stop Essex flange is in all circumstances the
best option.
S flange
Complete with compression ‘pump’ and
‘open vent’ connections. Also supplied with
an adaptor to connect to 1’’ ‘male’ and
‘female’ top entry cylinders.
Figure 29: S flange
Figure 28: Horizontal cylinders
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
Fig 29 S Flange
HOT WATER
CYLINDER
To pump
To vent
S flange
York flange
These may be used in systems where the hot
water requirement is less than 20 LPM.
SAL6479 Pumps Install DocAW1 .indd 16-17
29/09/2011 11:28
