INSTALLATION
• SECTION 3
17
Schematic
N.O.
BL
Igniter relay
Y
W
BK
Flame sensor
Combustion blower relay
Blocked
exhaust
P.S. N.C.
Collector
limit N.C.
T Stat
ECO
Igniter relay coil
Combustion blower
230V
24V
Anodes
ON/OFF
Switch
G
N
D
L
1
S
1
S
2
L
E
D
W
M
W
1
HSI Control
Fenwal 35-309-121
G
M
Gas valve
R
R
Toggle switch light
N.O.
Igniter
Blower relay coil
Wiring diagram
GN/Y
BK
Y
BL
BK
W
W
W
GN/Y
W
W
BK
GN/Y
BL
Y
BK
Y/BK
BL
BL
Y
BK
BL
BL
Y
GN/Y
W
BK
1
3
2
230V
T.B.
G
N
N
T.B.
Correx powered
anode control
Igniter 230V
Flame sensor
Blower relay
Blocked exhaust
P.S.
Collector limit
T Stat
High limit
Gas valve
Igniter relay
Ground
T.B.
Transformer
Combustion blower
M
230V
24V
24V
24V
L
N
1
2
Powered anodes
ON/OFF
Switch
4
3
1
5
4
3
1
5
GND
L1
S1
S2
LED
W
MW1
H
S
I
C
o
n
tr
o
l
F
e
n
w
a
l
3
5
-3
0
9
-1
2
1
ECOflo_E864_manual_SEPT2012 16/10/12 11:24 Page 17