Siemens RVW26.000B27 Basic Documentation page 10

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HVAC Products
SA4
FU
M
M
AIR
M
Fig. 6 Dual-fuel burner with flue gas recirculation and flue gas damper
H O
2
M
SA5
SA4
FU
M
M
AIR
M
Fig. 7 Dual-fuel burner with flue gas damper and water injection
All combinations shown above can also be used in connection with O
all cases, O trim control acts on the fan motor that is controlled by the variable speed
2
drive. On the applications according to Figures 4 and 5, the airflow resistance (volumet-
ric airflow) also changes depending on actuator «SA5» of the RVW26... To ensure that
«SA5» can also be influenced by O
level 4 must be set to the same value as with the RVW25...
Electronic Air / Fuel Ratio Control System
3 General
78731d01/0601
M
SA3
SA5
M
SA2
78731d02/0601
M
SA3
SA2
trim control, parameter «Disturb» on programming
2
SA7
M
SA7
M
trim control. In
2
CC1P7873.1en
15.10.2002