Beckett RWF40 Instructions User Manual
Page 8
8/10
Building Technologies
CC1N7865en
HVAC Products
01.09.2005
Connection diagram (basic diagram)
Temperature and pressure control on a dual-fuel burner.
Burner control and supervision are provided by burner control type LAL... or LFL...
DC 24 V at terminals «G+» and «G-» is used for powering the QBE... pressure sensor!
N
0
I
QAE...
B
RWF40...
L N G1+
M1 B9
M9 XB6 M6
Q14
Y1
Y2
D1
Q
L
M
B
M
QAC...
M
R
BSG...
LAL..., LFL...
4 5
ST
GAS
BS
1 0 2
BV1
N
RV
LK
18
19
BV1
BV2
9
11 10 20
v
a
M
z
m
MIN.
SQ...
OIL
~
7865a01/1004
GND
int. ext.
D2
S1
Q13
N
0
I
QBE...
B
RWF40...
L N
G+
M1
XU6 M6
Q14
Y1
Y2
D1
Q
L
M
0...10 V
BSG...
LAL..., LFL...
4 5
ST
GAS
BS
1 0 2
BV1
N
RV
LK
18
19
BV1
BV2
9 11 10 20
v
a
M
z
m
MIN.
SQ...
OIL
~
7865a02/0905
G
U1-
G-
GND
int. ext.
D2
S1
Q13
a
Limit switch for air damper position OPEN
QAE...
Immersion temperature sensor
BS
Operation selector
QBE...
Pressure sensor
1 = firing on gas
RV
Gas control damper
(modulating burner control)
S1
Internal / external setpoint switch (E)
2 = firing on oil
SQ...
Actuator of burner´s air damper and gas
(2-stage burner control)
control damper
BV...
Fuel valve
ST
Connections for burner control´s start
BSG...
Remote setpoint adjuster (active when
control loop
«S1» is closed)
v
Auxiliary switch for the release of the
L... Burner
control
2
nd
fuel valve depending on the air damper
LK Burner´s
air
damper
position
m (MIN) Auxiliary switch for controlling low-fire
z
End switch for the fully CLOSED
operation
position of the air damper
QAC...
Outside sensor for weather-dependent
setpoint
shifting
Note
Legend