Combinations K20–K27 (RLS 45 O)

Ventilation unit, sensor

PP 45 O / PP 45 K

PPB 30 O

External sensors (PP 45 HY, CO2, VOC) and LT

Internal sensor PP 45 HYI

Combination no.

Fan interface Fan1/ Fan2

Fan interface Fan1/ Fan2

RS 485 bus

I2C bus

K20

2

0-3

0-1

K21

3

0-3

0-1

K22

4

0-3

0-1

K23

5

0-3

0-1

K24

6

0-3

0-1

K25

1

0-3

0-1

K26

2

0-3

0-1

K27

3

0-3

0-1