CALEFFI 161020 Manual Download Page 5

5

en

Connect the mains cable to the following terminals:
Neutral conductor N
Conductor L
Protective earth conductor 

VBus

V

Bus

R2

R2

GND

Sensors

S1

100 ... 240 V

T2A

50-60 Hz

N

R1

R2|1 (1) A 30V

L

R1|1 (1) A 240 V~

Sensore temperatura 
esterna centralizzato

IP 20

Manufactured
by RESOL - TYPE SLT
Heiskampstr. 10
D-45527 Hattingen

161020

1.3  Data communication / Bus
The device is equipped with the VBus

®

 for data communication. The connection is 

to be carried out at the terminals marked VBus with correct polarity. 

161010

161010

161020

S1

VBus

®

VBus

®

. . .

FAP13 outdoor 
temperature sensor

20 controllers are connectable. For applications with more than 20 controllers, 
please contact Caleffi S.p.A.

Relay allocation 

R1
no alarm

open (normally open)

alarm

closed

R2
no alarm

closed (normally closed)

alarm

open

2  Function

The Central Outdoor Sensor detects the outdoor temperature and transmits this 
value via the VBus

®

 to the controllers connected.

If there is a sensor fault, the LED will flash, R1 will be energised and R2 switched off 
(the potential-free contact will open). 
LED flashing codes:
Permanent green: 

normal operation

Red flashing: 

sensor fault

Off:  

no power supply

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