Oilon VSi 6-14, Installation And Operation Manual

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a. Select the current range.
● Switch 2 position = ON (when fuse rating < 50 A).
● Switch 1 and 3–6 position: OFF.
b. Adjust the hysteresis, output percentage, and delay from screws in front of the
relay (main fuses: 25 A).
● Hysteresis: 21
● Current: 25–28%
● Delay: 1 s
c. Connect an external supply to terminals A1 and A2.
The relay requires an external voltage of 24–240 V AC.
d. Connect output terminals 15 and 16 to the heat pump’s control board.
If a phase’s power draw exceeds its current limit, the phase’s output
terminal cuts off power to the immersion heater’s power stage that is
connected to that phase.
e. Each relay has an opening for a phase wire. Draw the phase wires through the
openings in the relays as follows:
● L1: relay 1
● L2: relay 2
● L3: relay 3
2.7.5 Electrical installation checklist
Check the following:
1. The control cabinet’s supply input connection has the correct phase sequence.
2. The main fuse has a sufficient rating.
3. The ground source heat pump’s fuses have the correct rating and are of the right
type (slow-blow, C curve).
4. If applicable, priority relays have been installed to the building’s distribution board.
5. The heat pump’s mains cable has a sufficient capacity.
24 (70) M8011 2204EN