Technical information

10
WIRING DIAGRAM
Schematic layout:
Heaters type 1-2-3
EF
SE
J4
J8
IGN1
PA
COMCOM
NA NC
ION
EA1
J11
J17
J2
J14
VM
TA
J16 J13
J7
RSTR
MS
EVG1-I°
EVG1-II°
RST
LB
LL
LF
J10
J9 J12
SND
LM
TR
J15J18
J1
IMT
J6
NL
F2
F1
N
J5
II°
I°
SF
FAN
C
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 Line 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 board
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.
(**) Two stage only, External wiring customer
supply.
Electrical supply
single phase 230V 50Hz