24
• Connection diagrams
3110086 EHC20 UK 110515
N.3
Hydraulic variants / overview / systems
Temperature sensors
Extra low voltage only
Relay connections
230 VAC
Stor
age tank t
emp
. 1
Stor
age tank t
emp
. 2
For
w
ar
d flo
w t
emper
atur
e
Flue t
emper
atur
e
0-10
V sig
nal pump
Cir
cula
tor pump
Thr
ee
-w
ay v
alv
e
H
igh t
emper
atur
e mix
er
valv
e
Lo
w t
emper
atur
e mix
er
valv
e
Bypass damper
S1 S2 S3 S4 S5 S6 S7 S8 VFS1 VFS2 V1 V2 R1
(ELR)
R2
(ELR) R3
R4
R5
R6
R7
(pot.-
free)
Program 6.1.1
X
X
X
X
X
Program 6.1.2
X
X
X
X
X
X
X
Program 6.1.3
X
X
X
X
X
X
Program 6.1.4
X
X
X
X
X
X
X
X
Program 6.1.5
X
X
X
X
X
X
Program 6.1.6
X
X
X
X
X
X
X
X
Program 6.1.7
X
X
X
X
X
X
X
X
