14
■
Burner flame monitoring only
(In a case where the
FRS100
is not used in its usual combustion safety role of
shutting valves, etc.)
Handling Precautions
• If the power supply high potential (H) and low potential (G) are differenti-
ated, connect the high potential (H) to terminal 1 and the low potential
(G) to terminal 2.
8
3
1K
1K
2K
4
B
A
7
(F)
(G)
6
5
2K
2
1
–
+
Start check circuit
Power
Internal circuit
Subbase
Flame
amplifier circuit
Power circuit
Operation
input circuit
High potential
(H)
Low potential
(G)
Burner
start contacts
Flame detector
Flame voltage
0-5 Vdc
Start check
completion
Flame output
Contact output
common
Chapter 2. MOUNTING AND WIRING
