Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 145

Specification
(cont.)
Product characteristics (to EnEV [Germany])
Rated output range
Efficiency µ at
100 % of rated output
30 % of rated output
Standby loss q (max. limit according to EnEV
B,70
[Germany])
Power consumption (max. limit according to EnEV
[Germany])
at
100 % of rated output
30 % of rated output
Specification
kW 4.2 to 13
% 96.0
% 107.4
% 0.8
W 207
W 69
145