13
Heater type 4
LF
LL
LB
RST
NC
IGN1
ION
EA1
J16
J1
1
J2
J14
J7
J1
3
RSTR
TA
VM
MS
L3
N
L1
L2
IMT
F
J15
J1
J6
CNT
F2
J5
F1
II°
SF
I°
RT
FAN
SND
TR
EVG
1-
I°
EVG1
-I
I°
SE
EF
PA
COM
NA
J4
J8
J17
J1
0
J9
LM
J12
J1
8
KEY:
SND
Temperature control probe
TR
Regulatory control thermostat(auto reset)
LM
LIMIT thermostat (manual reset)
EVG1-I°
Gas solenoid valve
EVG1-II°
Gas solenoid min (
two stage
)
C
Capacitor / centrifual fan
FAN
Centrifugal
fan
F1-F2
Control
fuse
LF
Green working light
LL
High temperature indication
LB
Lockout
indication
RST
Lockout
reset
EF
Flue
venter
PA
Differential pressure switch
IGN1
Ignition
transformer
EA1
Ignition electrode
ION
Ionisation
probe
SE
Control
panel
RT
Relay fan motor
CNT C
ontactor fan motor
F
Line fuse
IMT (
*
)
Fused
isolator
MS (
*
)
Fire
switch
RSTR (
*
)
Remote reset
TA (
*
)
Room
thermostat
VM (
*
)
Fan
switch
SF (
**
)
Second stage gas valve connection
(
*
)
External to heater customer supply.
(
**
)
T
wo stage only
, External wiring customer
supply.
Electrical supply
threephase 400V 50Hz 3N
