13
Text
Description
Expected Value(s)
Valve Pos
Indicates the position of the anti-
condensation valve in the appliance.
0% = Valve fully opened = all heat to
property
100% = Valve closed = water circulation in
the heat exchanger (HE) only to raise the HE
temperature and avoid condensation.
90% in Standby Mode by default. This value can
be altered in the Engineer/Parameters menu.
Can modulate between 0 - 100% in all other
modes.
Heat Req.
Indicates the heat demand of the property.
Calculated using the Flow Temp. and Return
Temp. which are continuously monitored by
the control system of the appliance.
Varies between 0% and 100%. Heat Req. will
tend towards 100% if the heat demand of the
property is high i.e. the property is cold. As the
temperature of the property increases, the Heat
Req. value will decrease.
Draught Set
Indicates the draught required to ensure
correct airflow through all modes of
operation, displayed in Pascals (Pa). This
value is pre-set and remains constant for
each mode.
Standby: 50 Pa for the first
½
hour then 0Pa
System Check, Pre-load, Ignition
and Stabilisation: 40Pa
Powerbands 1,2,3,4,5: 10 – 15Pa
Extinguish, Final Clean and Blocked: 50Pa
Draught Act
Indicates the actual draught achieved
through the appliance by the exhaust fan,
displayed in Pascals (Pa).
Should match “Draught Set” values ± 10%
Intake Fan
Indicates the speed of the intake fan. This
value is determined by the operating mode
and feedback from the Lambda sensor that
continually monitors oxygen content of
combustion gases.
Usually between 3000 and 8000rpm
Table 3: Description of Information Screen 2
Figure 14: Information Screen (2 of 3).
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