6 720 611 137 GB (03.02)
Commissioning
23
5
Commissioning
Fig. 32
15
Safety valve
27
Automatic vent
61
Reset button
135
Master switch
136
Temperature control for central heating
170
Service cocks on flow and return
172
Gas cock (shown in on position)
295
Appliance type sticker
310
Function control (Service only)
317
Multifunction display
358
Condensate trap
361
Drain valve
363
Indicator lamp for burner
364
Indicator lamp for power supply
365
“Chimney sweep” button
366
Service button
367
No function
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. The inhibitor must not be added
until all the cleaner has been removed.
To drain the appliance shut the system valves and open
the drain valve.
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
E
6 720 611 137-11.1O
15
310
363
358
170
172
27
361
Never run the appliance when empty or,
with sealed systems, 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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