Viessmann VITODENS 242-F Installation And Service Instructions Manual page 158
3.2 to 26 kw gas condensing/solar storage combi boiler gas council no. 41-819-18; 41-819-19 natural gas and lpg version
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Also See for VITODENS 242-F:
- Installation and service instructions manual (152 pages) ,
- Technical manual (112 pages) ,
- Installation and service instructions for contractors (144 pages)
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Function description
External extensions (accessories)
Extension EA1
A1
PCB
F1
Fuse/MCB
DE1
Digital input 1
DE2
Digital input 2
DE3
Digital input 3
0 – 10 V 0 – 10 V input
fÖ
Power supply
158
(cont.)
fÖ A
Power supply for additional
accessories
aBJ
Central fault message/feed
pump/DHW circulation pump
(potential-free)
aVG
KM BUS
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