09
For the sensor, connect 2 wires between backup heater terminals XT20/5+6 and control box connector T1.
For the connection with the control box, connect 2 wires between backup heater terminals XT20/1+2 and control box terminals 14(IBH1)+17(N).
Backup heater
Heat pump system
1 2 3 4 5 6
XT20
BH30A
BH30B
BH45B
L N
�
�
����
CN11
14
17
14(IBH1) 17(N)
TO T1
A series
Backup heater
Heat pump system
1 2 3 4 5 6
XT20
BH45B/R
�
�
����
CN11
14
17
14(IBH1) 17(N)
L1 L2 L3
TO T1
A series
Summary of Contents for BH30A
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