21
Katherm QK nano –
Ultra-small trench heater with EC tangential fan
4.42
Ready-to-install convector-based floor trenches
Assembly and installation instructions
Installation of the control unit
Installation/Dismantling
Electrical wiring
• Connect the KaController to the nearest
Ka
therm
QK nano in line with
the wiring diagram. The maximum BUS length between the KaController
and the unit is 30 m.
• The respective
Ka
therm
QK nano automatically becomes the master unit
in the control circuit when a KaController is connected to it.
DANGER!
Disconnect the unit prior to embarking on any wiring work!
Only connect the bus lines when the unit is fully disconnected.
DIP switch setting
• The DIP switches on the rear of the KaController should be set as per the
adjacent figure:
DIP switch no. 1:
ON
DIP switch no. 2:
OFF
PCB fault messages
Any fault messages are shown in the KaControl remote controller
display.
KaController terminals
DIP switch setting
KaController
DIP switch no. 1:
ON
DIP switch no. 2:
OFF
Code
Alarm
A11
Control sensor faulty
A13
Room frost protection
A14
Condensation alarm
A15
General alarm
A16
Sensor AI1, AI2 or AI3 faulty
A17
Unit frost protection
A18
Faulty EEPROM
A19
Offline slave in the CANbus network
tAL1
Temperature sensor in KaController faulty
tAL3
Real-time clock in KaController faulty
tAL4
EEPROM in KaController faulty
Cn
Communication fault with the external control board (PCB)
