Glow-worm 24-38CXI Range - Manual (Page 17)

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4 Heating System
4.6 Water Treatment
In the case of an existing installation, it is ESSENTIAL that prior
to installing the new boiler the system is thoroughly flushed. For
optimum performance after installation of a new system, the
boiler and its associated central heating system should also be
flushed. Flushing should be carried out in accordance with
BS7593: 1992 using a cleanser such as Sentinel X300 or X400,
Fernox restorer or Salamander corrosion guard cleaner.
For long-term corrosion protection, after flushing, an inhibitor
suitable for stainless steel exchangers should be used, refer to
the current issue of BS 5449 and BS 7593 on the use of
inhibitors in central heating systems. Examples are Sentinel
X100 Fernox protector or Salamander corrosion guard inhibitor.
4.7 Draining Tap
A draining tap must be provided at the lowest points of the
system, which will allow the entire system to be drained.
See addendum.
A drain tap for the appliance is provided as an integral part of the
hydroblock, see diagram 12.10.
General - All domestic hot water circuits, connections, fittings
must be in accordance with the relevant standards and water
supply regulations.
For GB: Guidance G17 to G24 and recommendation R17 to
R24 of the Water Regulations Guide.
For IE: The current edition of I.S.813 "Domestic Gas Installations".
Diagram 4.3
12253
Diagram 4.2
12945
FILLING LOOP
TAP
FILLING LOOP TAP
EXTENSION
REDUCED
PRESSURE
ZONE VALVE