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13
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Pre-installation
Installation
PumpWise guidelines
General specification
Trouble shooting
PumpWise and warranty
Commissioning
Before you finish
• Flush inlet pipework and carefully fill
pump with water by discharging water
from the outlet flexible coupler into a
container.
• Fit pump inlet filters.
It is CRITICAL to discharge water through
the pump into a container using natural
flow before connecting the pump to
outlet pipework in order to ensure
the air has been discharged from inlet
pipework and pump chambers. This
will not happen if the outlet pipework
is connected to the pump. The best
method is:-
Figure 19
• DO NOT RUN PUMP DRY – to do so
will cause irreparable damage to
your pump and will invalidate your
warranty.
• Open shower mixer valve/system outlets
to maximum hot and cold to check the
natural flow (unpumped) flow of at least
1 litre per minute – positive head systems.
• FOR RIGHT ESP CPV pumps see notes on
page 7.
• Open hot water outlets fully for
5 to 6 seconds and then turn outlets off.
Then open cold water outlets fully for
5 to 6 seconds and turn outlets off. If
flow is poor and inconsistent repeat
above steps until flow is steady.
• Repeat 2-3 times.
MAX
65°C
C
H
The hot connection
must be via an approved
side or top entry flange
except for CT 50/75 and NP 50
OLD STYLE DO NOT USED
Fig 16 Critical
MAX
65˚C
H
C
The hot connection
must be via an approved
side or top entry flange
!
!
Helpful
guidelines
Cold water supplies and storage
Recovery of cold storage
The typical recovery rate of a 1⁄2 inch high
pressure part II BS1212 ball valve is:
15PSI (1.0 bar)
0.97 galls/min
30PSI (2.0 bar)
1.34 galls/min
40PSI (2.7 bar)
1.58 galls/min
60PSI (4.0 bar)
1.94 galls/min
Aeration of pump and cylinder
from a cold water storage tank
This occurs when the incoming cold mains
ball valve is positioned above the cold feeds
to the cylinder and to the pump – aerated
water is drawn into the pump as illustrated.
Figure 20: Aeration
Reposition
cold mains
ball valve
here
Vortex
Outlets
The bottom of
the cold tank
MUST BE
checked and
cleaned of debris
Fig 17 Aeration of pump
OLD STYLE DO NOT USED
Vortex
Reposition
cold mains
ball valve
here
Outlets to
pump
The bottom of the cold
tank MUST be checked
and cleaned of debris
Chronic aeration of the pump occurs when this
problem is combined with inadequate storage
capacity and/or when the volume of water
drawn by the pump and other services exceeds
the refill rate and creates a vortex which draws
air and possibly debris into the pump.
Cold storage usable capacity
The usable capacity of cold storage is easily
calculated as the capacity of water in the
cold tank above the cold feeds to the
cylinder, the pump and other outlets –
see formula.
Formula for calculation on rectangular
tank:
Depth (15”) x width (23”) x length (36”)
= 12,420 cu inches
Volume cu inches (12,420) x 0.01639
= 203.56 litres
Volume litres (203.56) x 0.22
= 44.78 gallons.
Formula for calculation on circular tank:
Depth (15”) x radius (17”) x radius (17”)
x 3.142 (Pi)
= 13,621 cu inches
Volume cu inches (13,621) x 0.01639
= 223 litres
Volume litres (223) x 0.22
= 49 gallons.
Figure 21
Length
Width
Usable capacity
Depth
of
water
Outlets
The bottom of the cold
tank MUST BE checked
and cleaned of debris
Length
Width
Usable capacity
Depth
of
water
Outlets
The bottom of the cold
tank MUST be checked
and cleaned of debris
Fig 18 Cold storage
OLD STYLE DO NOT USED
• Connect discharge pipework.
• Check that all the pump isolating
valves are open.
• Fill system. Check for leaks.
SAL6479 Pumps Install DocAW1 .indd 12-13
29/09/2011 11:27
