6
7
4.2 MODE 2 OPERATION
1. The element is energised, allowing heating
of the water to take place.
2. The continued heating results in the water
reaching the set point, detected by the
Thermistor.
3. The Solenoid Valve is then energised,
allo wing ambient water to enter the tank
thus reducing the water temperature by a
maximum of 2°C and results in a shift away
from the set point, again detected by the
thermistor.
4. When this occurs, the solenoid valve is
then de-energised, stopping the flow of
water into the tank.
5. Steps 2 to 4 are repeated until the High
Level Probe becomes “CLOSED”, i.e. water is
present.
4.3 MODE 3 OPERATION
1. The Element remains energised, allowing
heating of water to take place, resulting in
the water attaining set point, detected by
the Thermistor.
2. The Element is then de-energised allowing
cooling of water to take place.
3. Cooling continues to take place through
heat loss via the tank insulation until set
temperature point minus 2°C is reached,
detected by the Thermistor.
4. The Element is then energised, allowing
heating of water to take place.
5. Steps 1 to 4 are repeated until the water
is drawn from the unit, at which time the
controller then steps back into MODE 2.
4.4
4.5. DIAGRAM: DIMENSION SPECIFICATION 2.5L, 5L, 7.5L, 10L, 15L MODELS
DIMENSION
SPECIFICATION
TABLE
– referring to diagram
on the next page
WB-BW-AQ2.5L/5L/7.5L/IOL/15L
WB-BW-AQ25L
E
E
