Initial Flushing Procedure (Water Only) - Sentinel JetFlush Rapid Manuel D'utilisation Et D'entretien

EN
Section B – Using the Jetflush Rapid pump for power flushing
system until power flushing is
commenced. This is likely to be
the least effective method due to
the restrictive effect that valves
(particularly thermostatic) may
have on the flow rate.
The above method is generally
used on a combination boiler
system.
2c. Across the flow and return
connections at the boiler,
isolating the boiler itself. This
is the preferred method when
flushing a heating system prior
to installing a new boiler, as
corrosion debris may be purged
from the heating system before
the new boiler is attached. This
is important with all modern
boilers, particularly so if the new
boiler incorporates a plate type
heat exchanger with complex and
narrow water passages.
12
Jetflush Rapid Guidelines (19-02-15).indd 12
INITIAL FLUSHING PROCEDURE
(WATER ONLY STAGE, BEFORE
ADDITION OF CHEMICALS)
NOTE: In the following procedure,
the pump is first used to loosen and
mobilise loose silt and debris, before
forcibly expelling it together with
the existing heavily contaminated
system water. This rids the system
of as much debris and sludge at
an early stage, before establishing
full, chemically treated circulation
through the flushing pump.
By removing loose corrosion
products from the system before
addition of any chemical, the full
effect of the chemical is available to
disturb, loosen, and dissolve more
stubborn accumulations of debris.
Valve handle
positions
Dump
Closed
Recirculate
Labels on the
handles indicate
either Dump or
Recircualte
Flow reverser
Indicates direction
of ow
Jetflush Rapid V1-02-15
19/02/2015 12:13