6 720 611 400 GB (03.11)
22
Commissioning
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 off position)
173
Cold water service cock
295
Appliance type sticker
310
Temperature control for hot water
317
Multi function display
358
Condensation trap
363
Indicator lamp for burner
364
Indicator lamp for power supply
365
“Chimney sweep” button
366
Service button
367
ECO button
400
Text display
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 instructions
are supplied with proprietary cleansers sold for this pur-
pose. If an inhibitor is to be used after flushing, it should
be used in accordance with the inhibitor manufacturers
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.
.
nn
ECO
364
135
295
E
8.1
365
61
317 366 367
310
136
363
400
15
27
358
6 720 610 597 - 05.1O
170
171
173
170
172
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.