VN0930027
Solahart Owner’s Manual – Thermosiphon Systems - Revision 3
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EXTERNAL PIPE INSULATION
Solahart recommends:
•
That all hot water pipe work should have closed cell insulation of minimum 13mm thickness; this includes tank to collector
inter-connecting pipes. Insulation should be suitable for the temperature of operation (i.e. at least 90
⁰
C for hot water
supply pipes and at least 120
⁰
C for tank to collector connections).
•
Insulation in external locations should be weatherproof and resistant to UV radiation.
•
Insulation will improve system performance and will also protect against burns where the water heater is in a trafficable
location.
FILLING AND COMMISSIONING THE STORAGE TANK AND COLLECTORS
Warning:
Do not turn on electric power until after the water heater has been filled with water.
Turn on at least one hot water outlet tap, preferably over a bath or laundry basin. Open the mains water supply valve on the
line to the water heater to allow water to fill the storage cylinder and collectors, dispelling air out of the top of the cylinder
through the open tap. As soon as water flows freely (without air bursts) from the tap, close the tap and allow the cylinder to
pressurize. Check all joints for water tightness.
If fitted gently operate the easing levers on the temperature and pressure relief valve and expansion control valve to ensure
that the valves are functional. The system tank is now filled and ready to operate.
If fitted Turn ON the electric power to the heating unit ensuring that the power is correctly connected i.e. ‘Active’ line to
‘Active’ terminal etc.
Remove the solar collector packaging. This must be removed completely prior to the permanent operation of the water heater.
Electrical
ELECTRICAL CONNECTION
All electrical work and permanent wiring must be carried out by a qualified person. All installations are to be in accordance
with national and local electrical codes and regulatory authority requirements applicable in your area.
Warning
: Do not turn power on until the water heater is filled with water or damage to the heating element will result.
The power rating and current requirement of your Solahart water heater will be specified on the water heater’s data plate,
located on the cover to the electrical cavity. The temperature rating of the power supply lead’s insulation should suit this
application. A flexible 20 mm conduit is required for the electrical cable to the solar storage tank. The conduit is to be
connected to the unit with a 20 mm terminator. Connect the power supply wires directly to the terminal block and earth tab
connection, ensuring there are no excess wire loops inside the control cover.
An isolation switch MUST be installed in the meter box for service work on the unit. The isolating switch should be left
switched on.
If water and/or power are not available on completion of installation, leave the isolation switch in the meter box in the OFF
position and place a warning label “Do not turn on electricity until the water heater is filled with water” on the electrical
isolation switch.
Warning
: If the power supply cord to the heater is damaged it must be replaced by a qualified person in order to avoid a
hazard.
