Siemens RVW26.000B27 User Manual

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Siemens Building Technologies Electronic Air / Fuel Ratio Control System CC1P7873.1en
HVAC Products 16 Applications 15.10.2002
16.2 Basic diagram of a plant with a modulating
burner (one type of fuel)
(Using the LAL..., LFL1..., LGK16... or LOK16... as a burner control and the
RWF40... as a load controller with O
2 trim control)
20
Q
RWF40
LAL2.../LFL1.../
LGK16.../LOK16...
13 5 Q13
Y1Y211109
Q1414 4 812
7
RVW25
Q5 Q1
Y20
Y10
L
Q3A Q2NH
AL1
L
N
W
B1 M
X1 M
RVW26
Q5
Q1
Y20
Y10
L
Q3 U10 B4 M Y5 Y6
AUX2
U10 B2 M Y3 Y4
AUX1
1 2
SA5 SA7
Q2 NH
1 2
M
F1
1K9
Y8
M
AL2
78731f05/0801
X3 M
FU
1K8
M
X3 U1M U3
Q3B
1K4
S1
F1
F2
1K21K4
F1 F2 F2
Q7
X2GND
RPO25
F1F2
Q3Q2BQ2A
Q6
X2
X2
U1
DC-Power
Start / Stop
M
In 0...10 V
1K9
EK
1K2
1K4
1K4
Q4 Q4
AGK34
TG
Y7
1K8
P
LP
1K2
BV-F2
18
1K2
BV-F1
TXD
RXD
GND
TXDRXD
GND
Fig. 27 Basic diagram with O2 trim control
The following contacts are included in the burner control’s start control loop:
The on / off contact of the load controller (Q13...Q14), the readiness contact of the
RVW25... and RVW26… (Q4...Q5), the readiness contact of the RPO25... (Q6...Q7),
and the limit thermostat.

Siemens RVW26.000B27 Specifications

General

Brand	Siemens
Model	RVW26.000B27
Category	Control Systems
Language	English