Weishaupt WTC 45-A, Installation And Operating Instructions Manual, Page: 20 / 90

20
4
F10
230V B3
S3
F1 230V
4,0 AT
S10
EM
M
B11 B1
NTC 5k NTC 600 NTC 12k
B10
NTC 5k
L N PE
230V 1/N/PE 50Hz
Max.10A gL
MFA
1 2 3 4 5 6 7 8 9 10
230V .
L N PE
230V .
L N PE
H1
L E
H2
L E
MFA
L N PE
VA
1 2
eBus
+ -
B11
1 M
B1/N1
1 M
B3
1 M
H2
H1
N L
ϑ
eBus
Modul
WCM - CPU
CPU
WCM-EM
ϑ ϑ
B10
ϑ
WCM-FS
Wiring diagram WCM
4.6.1 External connection WCM
Note: • Local regulations must be observed when
connecting the boiler to the 230 VAC
mains supply, to ensure safe
disconnection from the mains is possible.
• The sum of all consumer load currents on
plugs 2 and 5 must not be more than
2 A continuous current.
ATTENTION
• The function of inputs and outputs H1, H2, MFA and
VA depend on the configuration (
➩
Chapter 7.4.4).
• Internal boiler wiring see appendix.
• Consumers of other power circuits (external voltage)
must not be switched directly with the VA output.
Mains switch
Main switc
h
DHW load pump
Calorifier cable
loom (optional)
The external connection is made in the electrical installation duct
Plug Number/ Connection Operating
colour range
Mains, 230V 1/ black 230 VAC supply input
230V 2/ grey 230 VAC supply output max. 250 VA
H1 3/ turquoise H1 Opto input 230VAC 0.002A function dep. on configuration
H2 4/ red H2 Opto input 230VAC 0.002A function dep. on configuration
MFA, 230V 5/ lilac MFA relay output: 230 VAC max. 150VA,
VA 6/ brown VA potential free relay output 230VAC 8A / DC 60V 5A
function dep. on configuration
eBUS 7/ blue Connection of add. control components WCM - FB, - EM, - KA
B11 8/ white De-couple sensor (variation: P2/P3)
➩
Ch. 7.4.5-7.4.7
0…99°C
B1 9/ green External sensor type QAC 31 (Order No. 660 186), -40…50°C
NTC 600 Ohm,
N1 4-20 mA remote load control
➩
Ch. 4.6.4 4…20 mA
B3 10/ yellow Tank sensor NTC 12kOhm 0…99°C
Optional: B10 DHW calorifier control sensor NTC 5kOhm
calorifier
➩
Ch. 4.6.5 0…99°C
cable loom