Honeywell SDC 9-21 - With Wall Base for Heating; District Heating Applications

SDC Connection assignment
MU1H-0438GE51 R0313 31
4.1 With wall base for heating / district heating applications
Bridge for district heating controllers
▲ OPEN
▼ CLOSED
Brief
description
Meaning
T2B A, Bus A
Data bus connection A
T2B B, Bus B
Data bus connection B
AF
Outside sensor, GND connection on X5
WF / KF
Heat generator sensor, GND connection on X5
SF
Tank sensor, GND connection on X5
VF1
Mixed heating circuit 1 flow sensor,
GND connection on X5
VE1
Variable input 1, GND connection on X5
VE2
Variable input 2, GND connection on X5
VE3
Variable input 3, VFB*, GND connection on X5
VF2
Mixed heating circuit 2 flow sensor,
GND connection on X5
KVLF
Collector flow sensor, GND connection on X5
KSPF
Collector tank/buffer sensor, GND connection on
X5
IMP
Pulse input, GND connection on X5
T1
Burner connection (T1), stage 1; for district heating
controllers L1