U
2-
S
MO
DE
L
COM
B
IN
AT
IO
N
V
IEW
ING HE
AD
A
N
D S
IGNA
L
P
R
OCE
S
S
O
R
3
2
-0
00
15
—0
5
1
2
Fig. 7. Typical Installation Diagram.
(GREY) FLAME SIGNAL OUTPUT 30VDC 1A MAX
(GREEN) FAULT SIGNAL OUTPUT 30VDC 1A MAX
(YELLOW) FLAME SIGNAL INPUT 30VDC 1A MAX
(PURPLE) FILE SELECT INPUT 30VDC MAX
(TAN) FILE SELECT OUTPUT 24VDC 10ma MAX
(ORANGE) mA OUPUT + 500Ω MAX
(BLUE) mA OUPUT - 500Ω MAX
(WHITE) RS485+
(BROWN) RS485-
(RED) +24V INPUT 120mA MAX
(BLACK) POWER SUPPLY
MCR35492
SCREW
TO EARTH
GROUND
CABLE DRAIN
TO EARTH
GROUND
FLAME
RELAY
SELF
CHECK
RELAY
U2-101xS
FLAMESCANNER
BURNER
CONTROL
SYSTEM
500Ω
MAX
24VDC SELV
POWER SUPPLY
