Controller Pcb - Vaillant flexoTHERM exclusive VWF 57/4 Installation And Maintenance Instructions Manual

8 Electrical installation
8.6

Controller PCB

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1 [X23] EEV connection (electrical expansion valve)
2 [X40] VR40 edge connector (electrical lines)
3 [X51] Edge connector for display connection
4 [X30] eBUS connection/diagnostics interface
5 [X25] Modbus plug for controlling the in-rush current
limiter
6 [X31] (not used)
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Installation and maintenance instructions flexoTHERM exclusive 0020213395_00
5 6
21 20
[X24] (not used)
[X41] Edge connector for external sensors (outside
temperature sensor, DCF, system sensor, multi-
function input (can be adjusted in the system con-
troller))
[X26] Sensor cable harness
[X100/S20] Limit thermostat
[X100/S21] EVU contact
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