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Astralpool Viron eVo Manual

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Inst.296 Viron eVo Series Pool & Spa Heater V07_16
4
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Turn off electric power to appliance.
3. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light
the burner by hand.
4. Wait five minutes to clear out any gas. If you then smell gas, STOP! Refer to instructions above.
5. Turn filtration pump on.
6. Turn on power to the heater and press the pool/spa button to select pool or spa mode.
7. Set thermostat to desired setting and the ON/OFF switch to turn the heater ON.
8. The heater will ignite in around 40 seconds.
9. If the appliance will not operate, turn heater power supply off. Repeat instructions 5 to 7 above. If the
appliance still does not ignite, call your service technician.
TO TURN GAS OFF TO
APPLIANCE
1. Turn off all electrical power to the appliance.
2. Turn off gas tap in gas line prior to heater.
CHEMICAL BALANCE
It is imperative that correct chemical balance be maintained in your pool and spa water, otherwise corrosion of
your heater may occur. Corrosion of the heat exchanger voids warranty. Your local pool shop specialist or
spa retailer can advise correct chemical balance. Your water should be checked and maintained regularly by a
pool water professional. As a guide the following parameters may be used.
pH 7.6 to 7.8
Total Alkalinity 80 to 120 ppm
Calcium Hardness 150 to 250 ppm
Salinity 4000ppm max. Excessive salt can damage your heater.
You should test your water chemical balance at least on a weekly basis.
Excessive sanitiser can damage your heater. Chlorine should not exceed 3 ppm and bromine should not exceed 5
ppm. Salt chlorinators, especially when used on spa pools or indoor or covered pools, can easily produce
excessive chlorine levels which will damage the heater internals.
CORROSION PREVENTION IN HEATERS
All pool and spa heaters use copper or copper nickel to make their heat exchangers as it is the most efficient
material in transferring heat from the combustion chamber into the water. The typical life expectancy of a well
maintained pool/spa heater is between 5 and 12 years.
The addition of sanitisers (Chlorine, Bromine etc) and other water balancing and conditioning chemicals can
increase the rate of wear and tear on the heat exchanger and associated parts in your heater.
There are three most common reasons for heat exchanger corrosion which can be avoided with a little care and
attention.
1. Excessive Sanitiser. This means too much Chlorine or Bromine in the water. Be careful, if the level of
Chlorine or Bromine is excessively high your test kit (and the pool shops) may not read accurately or indeed may
show a nil reading. Any time a salt chlorinator is operating for extended periods, (when heating the swimming pool
from cold), particularly if the weather is overcast or the pool enclosed or covered, the Chlorine level may exceed
normal levels. When heating a Spa Pool, turn the chlorinator down or off for the duration of the heating period.
2. Out of balance water. The water balance is a combination of pH, total alkalinity, Calcium hardness and
temperature. Balanced water will help prevent corrosion of your heater. Balanced water should be between 7.2 -
7.8 pH.
3. The addition of acid to lower pH. Acid must always be added in small quantities and spread over the
pool surface evenly, not added in to the skimmer. Do not add a litre at a time, add a cupful each day to lower your
pH.
If you have a salt chlorinated INDOOR pool or COVERED pool be very careful of the level of Chlorine being
produced. If you use a salt chlorinated spa be very careful of the level of Chlorine as the Chlorinator is usually
sized for the pool and therefore should be switched off when heating the spa. Leaving the chlorinator on can
raise the chlorine level very rapidly in a small volume of water.
These comments are intended as a guide only and are not definitive answers or recommendations on pool water
chemistry. Astral Pool’s intention is to provide a little understanding of the potential problems of water chemistry
and the dangers of corrosion to heaters (and other pool equipment and fittings).
YOUR WATER SHOULD BE ADJUSTED & BALANCED PRIOR TO ANY CORRODED PARTS BEING
REPLACED.
… 4 …


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