Hitachi AF-BCK-01 Installation And Operation Manual page 13

6.2. ELECTRICAL WIRING CONNECTION FOR bOILER COmbINATION kIT
The electrical wiring connection for the Boiler Combination Kit system is shown in figure below:

Terminal Board Layout:
Terminal board Connection
mark Function
T
N
Power supply
L
1
2
3
BCK Thermostat Bridge
4
5
Contacts for especial
6
Thermo ON/OFF

Thermo ON/OFF


10
Water flow switch bridge
11
Water flow switch bridge
12
13
14
15
Ambient Thermostat
16

NOTE:
All fields supplied cables.
AF-TB: AquaFREE-Terminal board
AF-RC: AquaFREE-Receiver
Electrical connections
Remarks
Earth
AC230 - 50Hz
AF-RC Nº 2
ON/OFF for all system
(controlled by room
thermostat)
AF-RC Nº 3
Electronic Outdoor
Thermostat no available
(Only EJP control)
To connect EJP (Timer)
electric price
AF-TB Nº5
Thermos ON/OFF
(AquaFREE)
AF-TB Nº6
If ON, the Boiler will start
Boiler control
running
AF-TB Nº: 7
Bridge WFS when Boiler is
running.
AF-TB Nº: 8
Pump control
AF-TB Nº: 9
Disconnect Pump after time
Pump control
AF-TB Nº: 10
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