Siemens RVA63.242 - Multi-Stage Burner; Modulating Burner

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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Application examples 26.03.2001
7.2.2 Multi-stage burner
C1
Without maintained
boiler return
temperature
C2
Maintained boiler
return temperature
with bypass pump
C3
Maintained boiler
return temperature
with mixing valve
B2
K4/K5
B9
2373z32
B7
K6/K7
2373z30
Y1/Y2
B7 Q2
2373z31
7.2.3 Modulating burner
D1
Without maintained
boiler return
temperature
D2
Maintained boiler
return temperature
with bypass pump
D3
Maintained boiler
return temperature
with mixing valve
B2
K4
B9
K5/K7
B7
K6
2373z30a
Y1/Y2
B7 Q2
2373z31
RC members for suppression of interference and for protection of relay contacts K5 and
K7 must be fitted externally.
Important