Electrical Connection - A.O. Smith ADM-40 Installation, User And Service Manual

3
3.8 Electrical
connection
3.8.1
Legend
A. screws
B. protective cap
C. connector block
26
Installation
Warning
The installation should be carried out by an authorised installation engineer,
in compliance with general and local regulations (1.3 "Regulations").
Preparations
Caution
The appliance is phase-sensitive. It is absolutely essential to connect the
mains live (L) to the live of the appliance, and the mains neutral (N) to the neutral
of the appliance.
Caution
There must also be no potential difference between neutral (N) and earth
( ). If this is the case, then an isolating transformer must be applied in the
supply circuit.
For more information or to order an isolating transformer, please contact A.O.
Smith Water Products Company.
The figure shows a view of the electrical connector block, and the table shows
the appropriate connections.
Connector block
C
1
1. In preparation, first remove the protective cover from the control column:
2. Undo the 4 screws (A).
3. Remove the protective cover (B) from the electrical part.
The connector block (C) is now visible.
Note
Please consult (14.2 "Electrical diagram") the appropriate electrical
diagram for details of the connections of the electrical components.
Terminal block
Mains power
L N
1
1 2 3
8
A
B
IMD-0506 R0
Flue gas
thermostat
L L
1 2
4 5 6
Instruction manual ADM
is
Unused
N
7 8