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6.4
Water treatment
NOTICE:
▶ Artificially softened water must not be used to fill the
central heating system.
Ensure that the system has been cleaned. Refer to section 4.1.2 of
these instructions.
Inhibitor (Central Heating)
▶ Check drain cocks are closed and all radiator valves are open before
adding a suitable inhibitor that is compatible with aluminium, or
combined inhibitor/anti-freeze if the system is exposed to freezing
conditions, to the heating system water in accordance with the
manufacturers instructions.
The pH value of the system water must be between 6.5
and 8 or the appliance warranty will be invalidated.
▶ Fill system via a WRAS approved filling loop to between 1 and 1.5
bar.
▶ Vent all radiators; tighten vents when complete.
▶ Re-pressurise, if necessary, to between 1 and 1.5bar.
▶ Set all controls to maximum.
▶ Record the date when the inhibitor was added to the system in the
Boiler commissioning checklist and in the guarantee registration.
NOTICE:
▶ The concentration of inhibitor in the system should
be checked every 12 months or sooner if system
content is lost.
▶ In cases where all attempts to find a micro leak have
failed, Worcester, Bosch Group supports the use of
Fernox F4 leak sealer.
Water treatment products
Suitable water treatment products can be obtain from the following
manufacturers:
ADEY
01242 546700 - www.adey.com
FERNOX
0330 100 7750 - www.fernox.com
SENTINEL
01928 704330 - www.sentinelprotects.com/uk
Appliance Drain Points
▶ The appliance can be drained via the primary heat exchanger point
[4]:
– There is an additional drain point on the secondary heat
exchanger [1] with drain tube [2].
– The heat bank also has a drain point [3]
Greenstar Heatslave II
2022 +
6 721 843 978 (2022/01)
Fig. 78 Appliance drains points
Appliance manual vent points
▶ The appliance can be manually vented via:
– The two vent points at the top of the secondary heat exchanger.
Only one may be in use, the other may be obscured by side fluing.
– A vent point on the primary flow from the primary heat exchanger.
▶ Use a radiator key or suitable screwdriver to open the vent point.
1
Fig. 79 Appliance manual vent points
6.5
Finishing commissioning - Appliance
Refer to figure 80
1. Rotate the control box [A] towards you [B].
Slide back into position [C].
2. Locate the bottom edge of the front panel [D] onto the supporting
ledge off the baseplate [E] and secure in place with screws [F].
3. Locate the top panel [G] onto the brackets at the rear of the boiler
[H] and locate the ball stud connections [J] and press down to
secure.
Always apply pressure at the edges of the boiler panels when
securing to avoid accidental damage.
Commissioning
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4
3
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2
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