Operation; General; Overview; Temperature Adjustment - Heatrae Sadia R 45 PLUS 3KW Installation, Operation And Maintenance Manual

8. Operation

8.1 General


Please note that this product has been
designed to make the operation of the unit and its
subsequent generation of hot water as simple for the
end user as possible. The factory settings that the unit
is delivered with are suitable for most installations.
DANGER
Always disconnect the electrical supply
before opening the cover.

8.2 Overview

Refer to section 4, page 9, for an overview of the
`
product and a list of the main components.
The heaters function is managed by a micro
`
controller on the control PCB.

8.3 Temperature adjustment

DANGER
Setting the stored water temperature above
40°C will increase the risk of scalding, for
hand washing, it is essential that a suitable
low pressure water tempering valve is fitted
in the hot water supply circuit. The installer
must ensure that this is carried out during
installation. As an end user, if you are
unsure about your installation then consult
a competent engineer before making any
changes.
CAUTION
The temperature set point is the thermostat
temperature and therefore may be lower
than the temperature at the top of the
tank where hot water is drawn off. That
water temperature will be at the set point
temperature +2°C.
DANGER
Setting the stored water temperature below
55°C will trigger the auto pasteurization cycle
which will heat the water to 60°C after 23
hours. This cycle will repeat ever 23 hours
whilst it is set below 55°C.
ECO
38 78
Figure 14: Temperature control
To adjust the temperature refer to manual figure 14 and
carry out the following.
The temperature control pointer position defines
`
the units temperature set point.
Turn the dial anti-clockwise to decrease the
`
temperature and clockwise for to increase.
The maximum temperature of 78
`
minimum of 38 C are the two stop points of the
o
temperature control at each end of the indicated
scale.

Eco mode is the optimum temperature set
point (approximately 60 C) and should be sufficient for
o
most uses.
C and the
o
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