Basic Diagram Of A Plant With A Modulating Burner (One Type Of Fuel) - Siemens RVW26.000B27 Basic Documentation

L
LP
F1 F2 P
S1
W
12 13 14 4 8 5
LAL2.../LFL1.../
20
LGK16.../LOK16...
7 18 9 10 11
1K4 1K2
1K2 1K4
1K2
BV-F1
N
52/69
Siemens Building Technologies
HVAC Products
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
EK
1K2 1K4
1K9
Q13 Q14
Q5 Q1 L F1 F2 Q4 TXD RXD GND
RWF40 RVW25
Q
Y2 Y1 Y20 Y10 Q3A Q3B N H Q2 Y7 B1 M X1
AL1
1K4
1K8
BV-F2
Fig. 27 Basic diagram with O
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.
Electronic Air / Fuel Ratio Control System
16 Applications
trim control)
2
Q5 L RXD TXD GND
RVW26
X3 X2 M M X2 U3 U1 Y8 Y20 Y10 Q3 Q2 N H Q1 U10 B2 M Y3
AGK34 TG
AL2
1K9
trim control
2
F1 F2 Q4 Q7 F2
RPO25
Y4 U10 B4 M Y5 Y6 X3 M GND X2 U1
1 2 1 2
M M
AUX1 AUX2
SA5 SA7
F1 Q6
FU
Q2A Q2B Q3 M
1K8
M
78731f05/0801
CC1P7873.1en
15.10.2002