A.O. Smith STE - 400, Инструкция по установке, эксплуатации и обслуживанию

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Installation, User and Service Manual
12
2.2.2
2.2.3
2.3 Electrical connections
2.3.1
2.3.2
Hot Water side
See (B) in the installation diagram (2.1 "Installation diagram").
Note
Insulating long hot water pipes prevents unnecessary energy loss.
1.
Optional: fit a temperature gauge so you can check the temperature of the tap water.
2.
Fit the T&P valve (3).
3.
Fit a stop valve in the hot water outlet pipe for servicing.
Circulation pipe
See (C) in the installation diagram (2.1 "Installation diagram").
If an immediate flow of hot water is required at draw-off points, a circulation pump can be
installed. This improves comfort, and reduces water wastage.
1. Fit a circulation pump (6) of the correct capacity for the length and resistance of the
circulation system.
2. Fit a non-return valve (5) after the circulation pump to guarantee the direction of
circulation.
3. Fit two stop valves for servicing (4).
4. Connect the circulation pipe according to the installation diagram (2.1 "Installation
diagram").
Warning
The installation should be carried out by a competent person, in compliance with general
and locally applicable regulations.
Introduction
1. Remove, depending on the type of element, one (flange element) or two screws
(screw-in element) in order to remove the plastic cover from the element.
2. Carefully remove the plastic cover from the heating element.
3. The electrical section can now be seen.
Electrical Element - flange
1. Mount the element in the inspection opening of the tank.
2. Feed the power cable through the grommet.
Warning
Not all flange-elements have the same supply voltage, see below.
Supply voltage flange-elements
Element 2.0 kW 2.5 kW 3.3 kW 6.0 kW 7.5 KW
Supply Voltage (+10%,-15%) 230 V
AC
230 V
AC
230 V
AC
400 V
AC
400 V
AC
Phase 1 1 1 3 3