Check Operation Of The Immersion Heaters; Demonstration To User - Heatrae Sadia ELECTROMAX Installation & Servicing Instructions Manual

7.8 Check Operation of the Immersion
Heaters
(a) The Off-Peak
controlled by the Off-Peak electrical
supply and will only switch on during Off-
Peak supply periods as defined by your
electricity supplier (refer to table 2, page
20 for Off-Peak on times).
(b) Switch on the Off-Peak electrical supply
MCB and isolating switch.
(c) Switch on the domestic hot water "on"
switch (indicated by a "tap" symbol, see
diagram 20, page 28). The switch should
be illuminated when on.
(d) Press the DHW Boost switch (indicated by
a "tap" symbol followed by "+1 hour",
see diagram 20, page 28). The DHW Boost
indicator should illuminate.
(e) The DHW boost immersion heater should
only operate for a period of one hour or
until the set temperature on its control
thermostat is reached. After one hour the
DHW Boost indicator light will go out.
immersion heater

7.9 Demonstration to User

Following commissioning any panels or covers
is removed must be replaced and fully secured
in place. The system, its function and control
should be fully explained to the user. This must
include:
(a) DHW supply –
Explain how the complete cylinder is only
heated by Off-Peak electricity.
Explain how a one hour DHW boost can be
obtained if a day time top up is required.
(b) Central Heating –
Explain how the central heating system
works.
Explain the operation of the programmable
room thermostat and the settings that
have been programmed.
Explain how the programmable room
thermostat can be over-ridden if required.
(c) System malfunction –
Explain what to do if the system
malfunctions or the "alarm" indicators are
illuminated.
Installation & Servicing Instructions 27