Connection diagrams - Data Sheet - RDF230MB

1-/3-speed fan

N1

RDF230MB

L, N, N

AC 230 V power supply, mains and neutral

Q1, Q2, Q3

Fan control output (relay output), Q1-low，Q2-middle，Q3 -high (AC 230 V)

Y11 *

SPST relay output, 2-pipe cooling/heating, or 4-pipe cooling, normally open (AC 230 V)

Y12 *

SPST relay output, 4-pipe heating, normally open (AC 230 V)

X1

Multifunctional input, e.g., sensor or switch

M

Input reference ground for X1

A, B

Modbus terminals, no isolation

REF

Modbus reference ground