Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
5 Installation
83309302 1/2018-05 La
48-196
Additional input/output module (optional)
With the additional module, the inputs and outputs of the condensing unit are ex-
tended. This allows certain hydraulic variants or special functions to be implemen-
ted.
D
A
D
D
WEM-FA-G
µC - Unit
1 2 M
T1/2
-
0 ... 10 V
+
1 M
N1
P 1 2
VA1/2
P 1 2
1 2 M
n
PWM
T1
T2
Additional input/output module
Plug
Colour
Connection
Description
VA1/2
brown
potential free relay outputs
external fuse: max 8 A
230 V AC/max 1 A, cos phi 1;
max 0.5 A, cos phi > 0.8
30 V DC/max 1 A
blue
PWM signal
Load pump stratified tank (WAS … Power)
control signal for speed con-
trolled pump
T1
grey
Sensor can be configured (WAS 100)
DHW outlet sensor (WAS … Power)
NTC 5 kΩ
T2
Sensor can be configured (WAS 100)
DHW sensor switch-off (WAS … Power)
NTC 5 kΩ
N1
orange
remote control input 0 … 10 V
–