62
figure 6�20 – Connexion câble CAN BUS for plants with more unit
Connexion câble CAN BUS between one DDC and more unit
Le
Gend
DDC
dir
ec
t dig
ital c
on
trol
SCH
elec
tronic boar
d S61
J1
Jumper C
AN-BUS in boar
d S61
J21
Jumper C
AN-BUS in boar
d DDC
A
ter
minal nodes c
onnec
tion - (3 wir
es; J1 e J21 = "
closed")
B
in
ter
media
te node c
onnec
tion - (6 wir
es; J1="
open
")
H,L,Gnd
da
ta sig
nal wir
es (r
if. cables table)
How to connect the plant water circulation pump
The control of the circulation pump from the electronic board of the appliance depends
on the power rating of the pump itself. There may be 2 different cases:
