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26
Chapter 4. Explanation of Operation
•
Non-recycling oil-fired combustion (2-level combustion)
Terminal layout
of connector
for front wiring
*
1
Use the external controller for either the power
or for low voltage.
: Terminal numbers of AUR890/BC-R05
F
External controller *1
(for low voltage)
Flame voltage
circuit
10A
Terminal numbers of Q890A100 base unit (for RA890 replacement)
AUR890/BC-R05A100
5
L1
NFB
L2(N)
External controller *1
(for power supply)
Pre-purge completion signal
1
Burner on-off circuit
Limit / interlock circuit
Blower operation circuit / pre-purge circuit
AC input
circuit
6
Fuel oil valve
Two-level fuel oil valve
Ignition transformer
8
4
6
3
7
1
2
2
3
10
25
Reset
switch
DISP
switch
FLAME
ALARM
Display
Combustion
safety
control
circuit
Input
circuit
(24 Vdc)
24 Vdc
17
T
+
20
T
14
F
G
FV+
FV-
Alarm
output COM
15
G
Flame
detector
Combustion
detection
circuit
K1
Power
supply circuit
K4
K5
K3
K2
K6
26
: Terminal numbers of Q890A100 base unit
(for RA890 replacement)
: Terminal numbers of the front connector
Alarm
COM
11
Alarm
output NO
NO
12
Alarm
output NC
NC
Содержание AUR890 Series
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