A.O. Smith SGS - 100, Installation & Service Manual

Page: 35 / 110

Instruction manual SGS 35
is
3.11 Electrical
connection
Warning
The installation should be carried out by an authorised installation engineer,
in compliance with general and local regulations (1.3 "Regulations") .
3.11.1 Introduction
Topics covered in this paragraph:
•
Preparation ;
• Connecting the mains voltage ;
Optionally, it is possible to connect an isolating transformer, a continuous pump,
a program-controlled pump, an extra ON mode switch and an extra alarm signal
to the appliance. For these options, see:
•
Isolating transformer ;
• Connecting a program-controlled pump ;
• Connecting an extra ON mode switch ("Tank ON") ;
• Connecting an extra error signal ('Alarm OUT' ) .
Note
The optional components are not included in the rating for electrical power
consumption stated in the table (3.4.2 "General and electrical specifications") .
3.11.2 Preparation
Caution
The appliance is phase-sensitive. It is absolutely essential to connect the
mains phase (L) to the phase of the appliance, and the mains neutral (N) to the
neutral of the appliance.
Caution
There may 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
(3.11.4 "Isolating transformer") .
For more information or to order this 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.