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4.4 ELECTRICAL
Cable adjusting and cable type between boiler and main supply, should
obey all related local and national regulations.
Properties of the Harmony_D PCB are as follows;
Supply voltage
10%/-15%
Supply voltage frequency
50Hz +/-5%
Max power uptake
8VA
Maximum permitted humidity
max 90% @ 40°C no condensing
Class of protection against electric shocks cl.II
Working
environment
clean
Protection
class
IP00
Printed circuit material
FR4
Protective fuse (line)
1 x 3,15AF (5x20mm)
The data mentioned above – if no different data is indicated – is referred
to following standard conditions:
•
Temperature: 25°C
•
Power supply: 230 V ac
1) It must be possible to completely isolate the appliance electrically.
2) The following connection alternatives must be used: A 3 amp fused
three-pin plug and unswitched shuttered socket outlet or a double
pole isolator with a contact separation of 3 mm in all poles and sup-
plying the appliance and controls only.
3) The appliance must be earthed.
4) Use the original mains cable provided with the boiler. If there is dam-
age, it should be replaced with an original spare by authorized Alarko
Carrier services.