6 720 610 576 GB (03.02)
Commissioning
23
5 Commissioning
Fig. 30
8.1 Pressure gauge
15 Safety valve
27 Automatic vent
61 Reset button
135 Master switch
136 Temperature control for central heating
170 Service cocks on CH flow and return
171 Hot water
172 Gas cock (shown in on position)
173 Cold water service cock
295 Appliance type sticker
310 Temperature control for hot water
317 Multifunction display
358 Condensate trap
363 Indicator lamp for burner
364 Indicator lamp for power supply
365 “Chimney sweep” button
366 Service button
367 ECO button
5.1 Commissioning
Benchmark Water Treatment: For optimum perform-
ance after installation, this boiler and its associated cen-
tral heating system should be flushed in accordance
with the guidelines given in BS7593:1992 - Treatment
of water in domestic hot water systems. Full instruc-
tions are supplied with proprietary cleansers sold for
this purpose. If an inhibitor is to be used after flushing,
it should be used in accordance with the inhibitor man-
ufacturers instructions.
To drain the appliance shut the system valves and open
the system drain point.
Suitable flushing agents and inhibitors are available
from Betz/Dearborn Tel.: 0151 4209563 and Fernox
Tel.: 01799 550811. Instructions for use are supplied
with the these products.
365
61
317 366 367
ECO
364
135
295
136
170
171
E
6 720 610 576-07.2O
15
310
363
358
8.1
173
170
172
27
Never run the appliance when empty or
unpressurised.
i
The operational CO
2
level is set at the fac-
tory and no adjustment is necessary when
installing a natural gas fired appliance.
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