A.O. Smith SGS - 100, Installation, User And Service Manual

Page: 42 / 121

Instruction manual SGS 39
is
Connecting the solar heating system is also described:
•
Connecting communication cable to solar heating system
Note
The optional components are not included in the electrical power
consumption rating stated in the table (3.4.2 "General and electrical
specifications").
3.11.2 Preparation
Caution
The water heater is phase-sensitive. It is absolutely essential to connect
the mains live (L) to the live of the water heater, and the mains neutral (N) to the
neutral of the water heater.
Caution
There must be no potential difference between neutral (N) and earth ( ).
If this is the case, then an isolating transformer (3.11.4 "Isolating transformer")
must be used in the supply circuit.
For more information or to order this isolating transformer, please contact
A.O.Smith Water Products Company.
The figure shows a view of the terminal block, and the table explains the
relevant connections.
Connector block
Legend
A. screws
B. cover
C. terminal block