Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 201

Upper and lower part of the main PCB
K Heating element 1 to K6
L Neutral conductor, instantaneous
heating water heater with sepa-
rate RCD circuits
*1
Central PE conductor point inside the electronics enclosure
Connection and wiring diagrams
(cont.)
M Supply (L1) heating elements 1
*
and 2 1
N Supply (L2) heating element 3
O Supply (L3) heating element 4
* 1
*
1
201