Weishaupt WCM-EM 2.1, Installation And Operating Instruction

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5.2.4 Wiring diagram WCM-EM as heating circuit controller
M
Y1 N PE Y2
230V
PE L N
MFA1
PE L N
eBUS
+ –
eBUS
+ –
B1
1 M
B3
1 M
B6
1 M 1 M
H1
L E
MM1
N PE
WCM-EM 2.1
Mains
230V 1/N/PE 50Hz
H1
L
PE
N
L
N PE
MM1
M
1~
M1
F11
16A
eBUS
B6 B1
0 1
F
E
D
C
B
A 9 8 7 6
5
4
3
2
PWM
Plug Colour Connection Remarks
230 V black Supply voltage
230 V AC/50 Hz
–
H1 turquoise Variable input 230 V AC Signal input with variable function
MFA 1 purple Heating circuit pump max. 5 A* **
MM1 yellow Mixer motor max. 5 A* **
eBUS light blue eBUS connection –
B1 green External sensor
QAC 31 (NTC 600
Ω)
Weather compensation via separate exter-
nal sensor for zone control
B6 white Supply sensor
NTC 5 k
Ω
Heating circuit with separately controlled
supply level via mixer
blue PWM control Modulation of heating circuit pump speed
control
* for electronic high efficiency pumps max 1.5 Ampere. Separate relay required for
greater power consumptions.
** Power consumption of outputs MFA 1 and MM1 in total maximal 5A.
Installation and operating instruction
Remote control station WCM-FS 2.0 and extension module WCM-EM 2.1
5 Electrical installation
83277502 • 3/2012-10 • La
23-106