A.O. Smith BFC - 28 Electrical diagram BFC, Cyclone BFC, Terminal Strip Connections, Components

Cyclone BFC

Electrical diagram BFC 28-60

TERMINAL STRIP CONNECTIONS		CONTROLLER CONNECTIONS
	Earth	J1	Connector for display to controller
N	Neutral	J2	Connector for power supply to
L1	Phase input of controller		controller
L2	Phase input of isolating	J19	Connector for extra error signal
	transformer (primary side)	J20	Connector for gas control
L3	Phase output of isolating	J21	Connector for program-
	transformer (secondary side)		controlled pump
L4	Phase input of program-controlled	J24	Connector for fan
	pump	JP2	Connector for ionisation rod and
L5	Phase input of continuous pump		glow igniter
		JP3	Connector for temperature
COMPONENTS			sensor T2
A	Controller	JP4	Connector for dummy
B	Ionisation rod	JP5	Connector for temperature
C	Glow igniter		sensor T1
D	Gas control	JP6	Connector for selection resistor
E	Burner earth connection		and pressure switch
F	Extra ON mode switch	JP8	Connector for extra
G	Continuous pump		ON mode switch
H	Program-controlled pump
J	Extra error signal	F1	Fuse
K	Isolating transformer	F2	Fuse
L	Double-pole mains switch
M	ON/OFF switch control
N	Display/Flat cable
O	Fan
P	Temperature sensor	Colour cables
	(T2 - bottom of tank)	1 = brown
Q	Dummy	2 = blue
R	Temperature sensor	3 = yellow/green
	(T1 - top of tank)	4 = black
S	Selection resistor	5 = white (flat cable)
T	Pressure switch	6 = grey/beige

Cyclone BFC

Electrical diagram BFC 80-100

TERMINAL STRIP CONNECTIONS

	Earth
N	Neutral
L	Phase input of controller
L1	Phase output of isolating
	transformer ( secundary side)
L2	Phase input of isolating
	transformer ( primary side)
L3	Phase input of program-
	controlled pump
L4	Phase input of frequency
	controller
L5	Phase input of continuous pump
COMPONENTS
A	Controller
B	Ionisation rod
C	Glow ignitor
D	Gas control
E	Burner earth connection
F	External ON-mode switch
G	Program-controlled pump
H	External error-signal
J	Isolating transformer
K	Double-pole mains switch
L	Controller 0/1 switch
M	Display/Flat cable
N	Fan
O	Temperaturesensor
	(T2-bottom of tank)
P	Dummy
Q	Temperaturesensor
	(T1-top of tank)
R	Selection resistor
S	Pressure switch
T	Potentiostat
U	Frequency controller
V	Argus-link interface
W	Electric anodes
X	Signaling for electric anodes
Y	Mains choke and EMC filter

CONTROLLER CONNECTIONS

J2	Connector for power supply
	to controller
J19	Connector for external error-signal
J20	Connector for gas-control
J21	Connector for program
	controlled pump
J36	Connector for display
	to controller
J39	Connector for fan controlled signal
JP2	Connector for ionisation rod and
	glow ignitor
JP3	Connector for temperature
	sensor T2
JP4	Connector for dummy
JP5	Connector for temperature
	sensor T1
JP6	Connector for selection resistor,
	pressure switch and anode
	signaling
JP8	Connector for extra
	ON-mode switch
F1	Fuse
F3	Fuse

Colour cables

1= brown

2= blue

3= yellow/green

4= black

5= white (flat cable)

6= grey/beige

7= red

8= green