70
• Useful information / tips and tricks
3110086 EHC20 UK 110515
Solution by high temperature in the heat-exchanger and when the temperature S8 ist smaller than
the set-point.
The temperature in the heat-exchanger can become to high when the heat source stops and the
temperature S8 drops below the set-point. A solution for this is described below.
Connect the pump according to this diagram
•
In the menu go to „ Special functions“
•
Choose menu point „Relay 7“ off
•
Choose menu sub-point „Thermostat“ off
•
Press confirm and choose „ON“
•
Set Th Tset on 80°C
•
Change thermostat sensor to S3 flow
•
Optional: Mount an S4 temperature sensor on the chassis of the heat-exchanger module and
change the thermostat sensor to S4.
Project:
Drawing Date:
Rev. Date:
Rev.:
Title:
Ref.:
Rauchgastemperatur
Vor
lauf
stemper
atur
Pufferspeicher-
temperatur
Drawing N°:
3110082
W
är
met
auc
her
temp.
(O
pti
onal
)
EHC20 System 6.1.3
TFI
B
26-09-13
Tem
per
atur
fühl
er
eingang 8
VF
S2 S
ens
or
VF
S1 S
ens
or
Net
z /
M
ains
0-
10V
A
us
gang
0-
10V
A
us
gang
exodraft EHC10/EHC20 Regler
PF
-Re
lais
Rel
ais
aus
gang
6
Rel
ais
aus
gang
1
RC
st
ec
ker
CA
N
CA
N
Tem
per
atur
fühl
er
eingang 7
Tem
per
atur
fühl
er
eingang 6
Tem
per
atur
fühl
er
eingang 5
Tem
per
atur
fühl
er
eingang 4
Tem
per
atur
fühl
er
eingang 3
Tem
per
atur
fühl
er
eingang 2
Tem
per
atur
fühl
er
eingang 1
Rel
ais
aus
gang
5
Rel
ais
aus
gang
4
Rel
ais
aus
gang
3
Rel
ais
aus
gang
2
Mischer
Pumpe
1
1
1
1
1
2
2
2
2
2
3
3
3
4
4
4
5
C
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
L
N
N
N
N
N
N
N
NC
NO
PE
PE
PE
PE
PE
PE
PE
PE
R1
R2
R3
R4
R5
R6
S1
S2
S3
S4
S5
S6
S7
S8
V1
V2
1
1
1
1
1
2
2
2
2
2
3
3
3
4
4
4
5
C
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
L
N
N
N
N
N
N
N
NC
NO
PE
PE
PE
PE
PE
PE
PE
PE
R1
R2
R3
R4
R5
R6
S1
S2
S3
S4
S5
S6
S7
S8
V1
V2
CCW
CW
N
CCW
CW
N
L
N
PE
L
N
PE
U
-S1
U
-S3
U
-S8
L1
N
PE
U
-S4
