Sunamo UniQ Dual 12, Reference Manual, Page: 11 / 25

Page 10 of 24
UNIQ HEAT BATTERIES REFERENCE MANUAL_V2.3
Holding switch, SW2, down will show the current setting on the 4 LEDs. Holding the switch down for longer than 5 seconds
will cause the LEDs to cycle. Release the switch, SW2, when the correct LED is illuminated, and this choice will be stored.
LED # Controller program
Show/set by holding down SW2
D4 --
D3 Program 3
D2 Program 2
D1 Program 1
3.2.3. Indicators
LED # Power on, normal
operation Temperature sensor fault “Cold start” active
D4 Off Flashing Off
D3 Off Flashing Off
D2 Off Flashing Flashing
D1 Power on On On
LED D5: Boiler demand signal. The low current relay will be activated when this LED is illuminated.
LED D6: Heater demand signal. The high current contactor will be activated when this LED is illuminated.
3.3. Control logic
3.3.1. Program 1 (Electric storage water heater)
•
Heating from bottom to top
•
Cooling from top to bottom
•
Option 1 on: demand signal generated when battery is approx. 90% depleted
•
Option 1 off: demand signal generated when battery is approx. 50% depleted
3.3.2. Program 2 (Thermal store with electric heater)
•
Heating from top to bottom with boiler and from bottom to top with electric heater
•
Cooling from bottom to top for both boiler and electric heating options
•
Option 1 on: boiler demand signal generated when battery is approx. 90% depleted
•
Option 1 off: boiler demand signal generated when battery is approx. 50% depleted
•
Option 2 on: electrical input is from solar PV diverter. High current relay will be activated to allow input
whenever possible.
•
Option 2 off: electrical input is from “backup” heater switc h
•
Option 3 on: Heat pump mode – requires 65°C flow temperature
•
Option 3 off: Boiler mode – requires 80°C flow temperature
3.3.3. Program 3 (Thermal store heated by external heat source)
•
Heating from top to bottom
•
Cooling from bottom to top
•
Option 1 on: demand signal generated when battery is approx. 90% depleted
•
Option 1 off: demand signal generated when battery is approx. 50% depleted
•
Option 3 on: Heat pump mode – requires 65°C flow temperature
•
Option 3 off: Boiler mode – requires 80°C flow temperature