PELLET BOILER UNO
ARITERM SWEDEN AB Installation Instructions - 2008.05.21 - 8/28
Electrical installation
The electrical installation shall be carried out by authorized personnel!
The boiler is equipped with an integrated temperature limiter that protects against
overheating. The temperature limiter switches off the burner as well as the heating
cartridge, if mounted. When the reason for the overheating is found, the tempera-
ture limiter is reset by pushing the switch under the screwable cover.
UNO is available in 2 models, 6 and 9 kW, (see label under the burner door on the
boiler front). For use of the output guard (9 kW model) the supplied current trans-
formers shall be mounted around the inlet wire in the fuse box. They are connected
to terminals S1, S2, S3 and C (common) on the circuit board inside the boiler top
panel.
Load safety guard - function
The boiler registers the total use of current in the house by the current transformers.
Whenthecurrentreachesthelimitvaluessetbytheknob”SÄKRING”(FUSE),half
of the boiler output, 4.5 kW, is disconnected.
The right-hand white knob is to be set at 4.5 kW and the left-hand yellow knob at
the main fuses value.
2 hour barrier - function
After a power failure half of the boiler output is saved in the boiler to avoid stress of
the main supply. The barrier can be disconnected by shortcutting
the the two terminals marked TF. The delay will then be only 20 seconds.
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