A.O. Smith ADM - 40 Installation, User And Service Manual page 67

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TERMINAL STRIP CONNECTIONS:
Earth
N Neutral
1
L Phase input of controller
2
L Phase input of flue gas thermostat
3
L Phase output of flue gas thermostat
COMPONENTS:
A Two-pole isolator switch
B Flue gas thermostat
C "Error" signalling
D "Operational" signalling
E RESET button
F Burner control
G Control thermostat
H Frost thermostat
J Controller 0/I switch
K Safety thermostat
L High-limit thermostat
M Extra error signal connection
N Gas control
O Hot surface igniter
P Flame probe
Q High-low control
R Timer
Instruction manual ADM
CONTROLLER CONNECTIONS:
N1 Neutral
Earth
L' Phase input of controller
L" Phase output to safety circuit and
thermostat circuit
TH Phase input of thermostat circuit
GV1 Phase output to gas control
MAX Phase input to safety thermostat
LG Phase output to hot surface igniter
I Detection of ionisation signal
NO Normally open port of the extra error sensor
P Phase input of extra error sensor
NC Normally closed port of the extra error
sensor
F1 Fuse
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