Water Treatment; Starting The Appliance - Worcester Greenstar Danesmoor Utility Regular ErP 12/18 Installation, Commissioning And Servicing Instruction Manual

Commissioning
6.3

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.
Flushing (Central Heating)
▶ Ensure the appliance is switched off.
▶ Open all drain cocks and drain the system while the appliance is hot.
▶ Close drain cocks and add a suitable flushing agent at the correct
strength for the system condition in accordance with the
manufacturer's instructions.
▶ Run the appliance/system at normal operating temperature for the
time stated by the manufacturer of the flushing agent.
▶ Drain and thoroughly flush the system to remove the flushing agent
and debris.
Inhibitor (Central Heating)
▶ Check drain cocks are closed and all radiator valves are open before
adding a suitable inhibitor 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 less than 8 or
the appliance warrantee 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 1bar.
▶ 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:
FERNOX 0870 601 5000 or www.fernox.com
SENTINEL 0800 389 4670 or www.sentinel-solutions.net
Table 7
36
6.4

Starting the appliance

NOTICE:
▶ Never run the appliance when the appliance/system
is unpressurised (sealed systems) or empty.
Check the oil supply is correctly fitted and in good working order before
turning on the oil supply valves to the boiler.
▶ Turn on the main oil supply valve at the tank and draw off oil until a
steady flow of clear uncontaminated oil can be seen as follows:
– The oil supply to the boiler should be primed before the burner is
operated to avoid unnecessary pump wear.
– The use of an oil suction pump will prime and flush through any oil
supply set up simply and easily.
Alternatively the following procedure can be used -
Single pipe gravity feed systems:
▶ Disconnect the flexible oil pipe and open the isolating valve to
discharge the oil into a suitable container.
▶ If a top entry tank has been used the pipework will need to be primed
before the oil will discharge under gravity.
▶ When completed, close the isolating valve, reconnect the flexible oil
pipe.
Double pipe sub-gravity feed system and single pipe suction lift with
de-aerator:
▶ Prime the oil supply pipework to prevent oil pump damage.
▶ To prime a de-aerator, disconnect the flexible oil inlet hose (F) from
the isolation valve and place in a container of kerosene (G).
Connect a spare flexible oil hose (E), to discharge into container (G).
Open the isolating valve, turn on the power to the boiler and set the
programmer to ON. Prime the de-aerator until there is a steady flow
of oil into container (G). Turn off the boiler then reconnect the
flexible oil inlet hose (F).
▶ Turn on the boiler, the oil level in the de-aerator will drop as the oil is
used until the oil is drawn from the tank. If the de-aerator empties and
the burner locks out before the oil is drawn from the tank prime the
de-aerator again.
▶ Open the isolating valve and the oil pump bleed valve (A) to discharge
into a suitable container once the boiler is started up.
Return
Flow
E
F
G
Fig. 61
▶ Switch on the electricity supply to the boiler.
▶ Set the programmer to ON.
▶ Turn on the boiler control thermostat.
▶ Allow the burner to run through to 'lock-out' indicated by the
illumination of the lockout indicator (D, (note: some systems will not
▶ lock out).
▶ If lockout occurs wait 2 minutes then press the lockout reset button
(D).
Greenstar Danesmoor Utility ErP and Utility System
TANK
6720808218-55.1Wo
ErP - 6 720 813 286 (2014/09)