Copyright © 2014
Ikhwezi Solar (Pty) Ltd, Novatherm CC, Solar Assist (Pty) Ltd
9
All pipework must be properly insulated, including at least two metres of the
cold feed to and hot supply from the geyser. Insulation material must be
heat tolerant and UV resistant, nor must it unduly compress or cause
corrosion.
Installation Tip: For increased weatherability in harsh climate areas insulation can further be wrapped with aluminium duct
tape or covered by a product such as Flash Harry membrane and coating.
Piping from the flow of the tank to the inlet at the top of the collector must
have a continuous fall and from the top of the collector to the return must
have continuous rise.
Only hard-soldered connections or compression fittings are to be used in the
assembly of the solar heating circuit. No fluxing agents containing chloride
should be used.
Use copper pipe only. Plastic pipe must not be used due to the effects of
high water temperatures and pressures. The pipe work to and from the
geyser must also be copper for at least two metres below the hot water
outlet.
A temperature mixing valve must be used to control the temperature of
water delivered to the points of use. This is important in the prevention of
accidental scalding and is a SANS requirement.
9.3
Geysers
The Novasun Solar Water Heating systems make use of WE Geysers (Pty)
Ltd’s Solartherm geysers cylinders, depending on the model selected. The
manufacturers’ installation requirements that accompany each of these
products must be observed in the installation process. Failure to do so may
result in the warranty of these products becoming null and void.
WE Geyser tanks are fitted with SABS approved peripherals.
Geysers installed inside must have sufficient space for servicing thermostats
and elements (Note: there are no anodes in Solartherm cylinders which
require regular servicing) , as well as allowing for the required SANS height
of vacuum breakers above the tank
9.4
Electrical connection
All electrical work must be carried out by properly qualified and registered
electricians.
Novasun recommends the installation of a time switch when undertaking a
solar installation. This optimises the performance of the system and is
specifically required when a rebate is to be claimed in respect of the Eskom
incentive program.
The time clock is fitted to the distribution board and is used to set the time
periods that the thermostat and element receive electrical input. Time
settings will be dictated by patterns of consumption, but for example could
be set to activate from 3am to 5am and from 4pm to 6pm, taking care that
the times do not fall within Eskom peak periods.
Electric water heaters use 220 Volt AC power. The circuit breaker and
isolator should be switched off before working on the geyser. Verify that
power is off with a volt meter and ensure that load shedding or existing
timers are not active, which may cause the electrics to become live whilst
working on the system.
Power should not be applied to an empty electric water heater as heating
elements will be damaged. Tank warranties would be void in these
circumstances.
9.5
Installation Diagrams
Various installation diagrams are illustrated below in order to assist
installers with installation services. Prospective installers must
contact Solar Assist for system specific training and instructions
prior to installing the Novasun SWH range.
Thermosiphon System – Installation diagram
Acknowledgement:
www.solarassist.co.za
Note: For purpose of installation demonstration no insulation
has been shown here but Insulflex insulation must be installed according to standard on all open copper
piping as per paragraph 9.3.1
Pumped System – Installation Diagram
Note: For purpose of Pump controller installation and wiring instruction refer to the Geyserwise Installation
manual or go to
www.geyserwise.co.za
