
11
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.
• 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
60˚C
H
C
The hot connection
must be via an approved
side or top entry flange
!
!
• Connect discharge pipework.
• Check that all the pump isolating valves
are open.
• Fill system. Check for leaks.