Manualshelf

User manual

ManualsBrandsDelta Electronics ManualsComputer equipmentA80
31323334353637383940
Page 34
Commissioning
The gas pressure needed for the boiler to work correctly under full output is a minimum of 20 mbar (to current
regulations, if greater) with all plant running.
Activate the boiler by pressing the ON/OFF button for at least 5 seconds. After this the following display
will appear:
34.1 When there
is no water present in the boiler or the water pressure is too low/high, the boiler will go into lock-out and will show
a corresponding message in the display.
By pressing the [SERVICE] button of the boiler, the boiler can be started without a heating demand. The boiler
will start to fire and also the pump will start to run. Firing of the boiler without a water flow (but filled with water!)
will cause “boiling noises”. Check during this “service function” operation also the flow and return temperatures of
the boiler by pressing the [◄] button once. The temperature difference of the flow and return must be at least
13ºC and maximum 25ºC. This temperature difference indicates that there is a (enough) water flow over the
boiler; this water flow prevents the heat exchanger of possible damage caused by a thermal overload.
Another safety feature of the boiler, to make sure that there is enough water flow over the boiler, is the
monitoring of the flow and return temperatures (T1 and T2). When the temperature difference (delta T) between
the flow and return exceeds a certain (set) value, the following warning messages will be shown in the display.
Display message H E A T I N G : N o d e m a n d
> > > : 1 2 3 . 4
o
C ( 1 2 3 . 4
o
C )
Reason Boiler is active, but there is no heat demand.
Display message T 2 - T 1 h i g h
9 9 9 , 5 h r s
Reason The maximum delta temperature T2-T1 has exceeded the blocking temperature,
w hich is set in the parameters.
Display message H e a t e x c h a n g a t r i s k
9 9 9 , 5 h r s
Reason The max delta temperature T1-T2 has exceeded the blocking temperature more
than three times. Set in the parameters P2 CQ-P2 CV (∆T>P2 CV (binnen t=P2 CQ).
as in t=P2 CQ
REMINDER
Please fill the Syphon.