A.O. Smith STE - 1000, Installation, User And Service Manual

Page: 81 / 112

Installation, User and Service Manual STE
81
3.8.3
Connector block
In preparation, you must first feed the electrical mains cable trough the strain relieve on
the left hand side of the control unit.
Connecting the mains power
The water heater is supplied without a power cable and isolator.
Note
In order to receive electrical power, the water heater has to be connected to the main
power by means of a permanent electrical connection. A double pole isolator with a
contact gap of at least 3 mm must be fitted between this permanent connection and the
water heater.
Warning
Leave the water heater electrically isolated until you are ready to commission it.
1. Connect live L
1
, L
2
and L
3
, of the power cable to terminals L
1
, L
2
and L
3
of the
terminal block as shown in the table (3.8.2 "Preparation") .