Novasun 150L Instruction & Installation Manual - page 16
Copyright © 2014
Ikhwezi Solar (Pty) Ltd, Novatherm CC, Solar Assist (Pty) Ltd
15
If the water heater is left unused for two weeks
or more a small quantity of hydrogen gas,
which is highly flammable may accumulate in
the top of the water cylinder. This is true of
both conventional electric geysers and solar
systems. To dissipate this gas safely, it is
recommended that a sink hot tap be turned on
for several minutes. Do not use a dishwasher,
clothes washer or other appliance for this
purpose. During this procedure there must be
no smoking, open flames or any electrical
appliance operating nearby. If hydrogen is
discharged through the tap it will make an
unusual sound like air escaping.
It is recommended that if the system is going
to be left unused for long periods of time, that
the backup element switched off at the
distribution board. Remember that when the
geyser breaker is reactivated the time clock
may have to be reset as it has a limited settings
memory when switched off (i.e. approximately
72 hours depending on the model).
13.6
Freeze protection liquid
No freeze protection liquid is used in the
Novasun system as the system inherently
is protected against freezing conditions.
(Passed SABS Freeze Test -20°C)
13.7
Setting the time clock
WE Geysers (Pty) Ltd recommends that an SABS
approved time clock, with battery backup, be
installed on the distribution board. There are
many such time clocks on the market and the
operation of which are all relatively similar. A
Samite QAT-R-DM time clock has been selected
to illustrate how to program the time clock.
This time clock has four different screens. When
it is powered up screen 1 (main screen) appears.
SCREEN 1: Actual Time Indicator
This ON/OFF indicator indicates whether the time
clock is currently active or not. This screen also
displays the current actual time.
Press the green function button to cycle forward
to the next screen.
SCREEN 2: Set Actual Time
Press the Hour and Minute buttons to set the
actual time. Once the time is set press the
function button to advance to the next screen.