Oilon VSi 6-14, Installation And Operation Manual

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2.7.3 Room temperature sensor (optional)
Install the room temperature sensor in a location where it measures the average
temperature in the relevant heating zone as accurately as possible.
● Install the sensor in a central location in an open space (such as a hallway
connecting several rooms or a stairway).
● Draw a 2-pole power cable between the heat pump and the sensor (min. cross-
sectional area: 0.5 mm
2
).
● Install the sensor 2/3 of the way up the wall.
Connections
Device Terminal number Wire type
Room temperature sensor X1/14 and X1/2
2x0.7 mm
2
2.7.4 Load guard
When the heat pump has been set up for parallel use with an electric immersion
heater, the property’s distribution board needs to be equipped with priority relays.
The purpose of these relays is to step down the output of the heat pump’s electric
immersion heater when the alternating current drawn through the property’s main fuses
is close to the fuses’ rating.
1. Install priority relays downstream from the main fuse. The entire building’s mains
supply needs to be behind the relays.
2. Draw a 4-pole signal cable between the relays in the distribution board and the heat
pump’s control cabinet.
3. Replace contactor K3 in the heat pump’s control cabinet with three single-phase
contactors.
4. Adjust the relays’ settings, and connect the cables to the heat pump’s control
board.
The settings presented here are initial values, and may need
to be adjusted. Always adjust the relays based on the local
circumstances.
DIP switch positions
DIP switch Status Function
1 and 2
ON+OFF
ON+ON
OFF+ON
OFF+OFF
20 A
50 A
100 A
100 A
3
ON
OFF
N.D.
N.E.
4
ON
OFF
6 +/–1
1 +/–1
5
ON
OFF
Latch
Inhibit
6
ON
OFF
Over
Under
M8011 2204EN 23 (70)