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Repeated pressing of the 'mode' button gives the display
sequence shown in diagram 11.4.
If a different option is required, repeatedly press the 'mode'
button until the required symbol is shown, and then press and
hold the 'mode' button for two seconds. The decimal point will
flash to confirm selection.
Note: If no buttons are pressed the display reverts to show boiler
temperature after approximately two minutes.
Temperature Display
The boiler normally shows the operating temperature of the unit
on the digital display. However, because the display consists of
only one digit, temperature is represented in blocks of ten
degrees as follows.
DISPLAY
TEMPERATURE RANGE ( C)
0
Min -
1
6 - 15
2
16 - 25
3
26 - 35
4
36 - 45
5
46 - 55
6
56 - 65
7
66 - 75
8
76 - 85
9
86 - Max
The decimal point after the digit signifies that the boiler is firing.
This information is also supplied on the inside of the control
door.
11 Commissioning
5
PRESSURE
TEST
POINT
ELECTRICAL
CONNECTIONS
Temperature Options
There are four domestic hot water and four central heating
options to choose from. These options are shown on the digital
display by repeated pressing of the 'mode' button. The sequence
is shown in diagram 11.4. The selected options are indicated by
a flashing decimal point.
Only one domestic hot water and one central heating option can
be selected at any one time.
For adaptive control, see section 11.10.
CONTROL
DOOR
21
PROTECTIVE
CAP
Diagram 11.2
BRASS
LUGS
Diagram 11.3
221874A
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