WIRING DIAGRAM SINGLE AND TWO STAGE
Type 1-2-3-4-5
C
FAN 1
C
FAN 2
IMT
J6
NL
F2
F1
N
J5
II°
I°
SF
230
V
5
0
H
z
EF
SE
J4
J8
IGN1
PA
COM
COM
NA
NC
ION
EA1
J1
1
J1
7
J2
J1
4
VM
TA
J1
6
J1
3
J7
RSTR
MS
EVG1
-I
°
EVG
1-I
I°
RST
LB
LL
LF
J1
0
J9
J12
SND
LM
TR
J1
5
J1
8
J1
KEY
SND
Temperature
probe
TR
Regulatory control thermostat (auto reset)
LM
LIMIT thermostat (Manual reset)
EVG1-I°
Gas solenoid valve 1
EVG1-II°
Second stage
gas valve 1
(Two Stage
version only)
C
Fan
capacitor
FAN 1
Axial fan 1
FAN 2
Axial fan 2 (type 5)
F1-F2
Line
fuses
LF
Green
working
light
LL
High temperature indication light
LB
Lockout
indication
RST
Lockout
reset
EF
Flue
venter
PA
Differential pressure switch
IGN1
Ignition
transformer
EA1
Spark
electrode
ION
Ionisation
probe
SE
Electrical control board
IMT (
*
)
Fused
isolator
MS (
*
)
Fire damper connection (accessory)
RSTR (
*
)
Remote reset connection
TA (
*
)
Room thermostat connection
VM (
*
)
Fan switch connection
SF (
*
)
Second stage gas valve connection
(
*
)
External to the heater customer supply
10
