Technical data

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.: [phone] and Fernox
Tel.: [phone]. 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.