CAUTION
Indoors
Power supply
Please use the shielded wire, and the shield layer must be grounded.
On/Off switch
Fuse
Distribution box
Distribution box
Distribution box
Distribution box
Fuse
Fuse
Fuse
L N
L N
L N
L N
Master unit
Slave unit 1
H1 H2
Slave unit 2
H1 H2
Slave unit x
H1 H2
Build-out resistor
Only the last IDU
requires adding the
build-out resistor at
H1 and H2.
......
Power supply
Please use the shielded wire, and the shield layer must be grounded.
On/Off switch
Fuse
Distribution box
Distribution box
Distribution box
Distribution box
The cascade system electrical control system connection diagram(3N~)
Master unit
Slave unit 1
H1 H2
Slave unit 2
H1 H2
Slave unit x
H1 H2
Build-out resistor
Only the last IDU
requires adding the
build-out resistor at
H1 and H2
......
L1 L2 L3 N
Fuse
L1 L2 L3 N
Fuse
L1 L2 L3 N
Fuse
L1 L2 L3 N
1
、
The cascade function of the system only supports 6 machines at most.
2
、
In order to ensure the success of automatic addressing, all machines must be connected to the same power
supply and powered on uniformly.
3
、
Only the Master unit can connect the controller, and you must put the SW9 to “on” of the master unit, the slave
unit cannot connect the controller
.
4
、
Please use the shielded wire, and the shield layer must be grounded.
The cascade system electrical control system connection diagram(1N~)
41
ON
OFF
SW9
Slave unit
Master unit
ON
OFF
SW9
Slave unit
Master unit
EN
IDOLA M 3.2
04÷16T
CAUTION
34
Ethylene Glycol and Propylene Glycol are TOXIC
WARNING
NOTE
During filling, it might not be possible to remove all air in the system. Remaining air will be removed through the
automatic air purge valves during the first operating hours of the system. Topping up the water afterwards might be
required.
The water pressure will vary depending on the water temperature (higher pressure at higher water temperature).
However, at all times water pressure should remain above 0.3 bar to avoid air entering the circuit.
The unit might drain-off too much water through the pressure relief valve.
Water quality should be complied with EN 98/83 EC Directives.
Detailed water quality condition can be found in EN 98/83 EC Directives.
Connect the water supply to the filling valve and open the valve.
Make sure the automatic air purge valve is open (at least 2 turns).
Fill with water pressure of approximately 2.0 bar. Remove air in the circuit as much as possible using the air purge
valves. Air in the water circuit could lead to malfunction of the backup electric heater.
9.5 Filling water
Do not fasten the black plastic cover on
the vent valve at the topside of the unit
when the system is running. Open air
purge valve, turn anticlockWise at least
2 full turns to release air from the
system.
CounterclockWise rotation, remove the flow switch.
Drying the flow switch completely.
When the unit is not running for a long time, make sure the unit is powered on all the time. If you want to cut off the
power, the water in the system pipe needs to be drained clean to avoid the unit and pipeline system being damaged by
freezing. Also the power of the unit needs to be cut off after water in the system is drained off.
Cod. 3QE47850 - Rev. 00 - 03/2022