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i^fORCESTER
INSTALLATION & SERVICIN
6 720 611 927b (04/05)
Bosch roup
INSTRUCTIONS FOR WORCESTER BOSCH
REENSTAR 25CDi/30CDi/35CDi/40CDi
WATER TREATMENT
IMPORTANT: Debris from the system can
damage the boiler and reduce efficiency.
Failure to comply with the guidelines for
the use of water treatment with the appli
ance will invalidate the appliance warranty.
ENSURE THAT THE SYSTEM HAS BEEN
CLEANED AS ON PAGE 9 OF THESE
INSTRUCTIONS.
FLUSHING (Central Heating):
1. ► Switch off the boiler (A).
► Open all drain cocks (B) and drain the
system (C) while the appliance is hot.
2. ► Close drain cocks (D) and add a suitable
flushing agent (E) at the correct strength for
the system condition in accordance with the
manufacturer ' s instructions.
3. ► Run the boiler/system at normal operating
temperature (F) for the time stated by the
manufacturer of the flushing agent (G).
4. ► Drain (H) and thoroughly flush the system
to remove the flushing agent and debris (I).
INHIBITOR (Central Heating):
5. ► Check drain cocks are closed (J) and all
radiator valves are open (K) before adding a
suitable* inhibitor (or combined inhibitor/
anti-freeze if the system is exposed to freez
ing conditions) to the heating system water
(L) in accordance with the manufacturers
instructions.
6.
► Fill via the built-in filling loop to between 1
and 2 bar using the filling key (M).
7.
► Vent all radiators; retighten vents when
complete (N).
8.
► Re-pressurise if necessary to 1 bar (Q).
► Set all controls to maximum (R).
► Record the date when the inhibitor was
added to the system on the guarantee card.
NOTE: The concentration level of inhibitor in
the system should be checked every 12
months or sooner if system content is lost.
The addition of sealing agents to the system
water is not recommended as this can cause
problems with deposits left in the heat
exchanger.
* compatible with aluminium. The pH
value of the system water must be less
than 8 or the appliance guarantee will
be invalidated.
WATER TREATMENT
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