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Water Quality
The water quality must be within the following limits:
PH 6.8 - 8.0; TA (Total alkalinity) 80—140ppm (parts per million)
Chloride Content MAX: 150 mg/litre
Free Chlorine: 2.0 mg/litre
Total Bromine: Max 4.5 mg/litre
TDS (Total Dissolved Solids) / Ca)lcium hardness 200 - 1,000ppm
Nano SPA heaters are built with a titanium heating element, which are
suitable for use on spas with a salt concentration up to 8000ppm (8g/
litre). For salt concentrations over 8000ppm, a titanium flow tube is also
recommended.
Water chemistry is complicated if in doubt seek expert advise.
Operating Instructions
Upon completion of the installation, run the water-circulating pump to
purge the system and heater of air (i.e. remove any trapped air in the
system and heater). TIP: You can encourage air out of the heater flow tube
by gently elevating the exit port of the heater when the pump is running.
The heater will only switch 'On' (red light indicator illuminated) when the
following criteria are met ie:
•
Water circulating pump is 'On' delivering in excess of 1,000 litres /
hour (220 UK gallons/hour)
•
Temperature set point dial is set to a higher value than that of the water
Q: How long will it take to heat my spa?
A: Assuming no heat losses, and a heater sized in the ratio 1.5-kW per
1,000 UK gallons of water (4,545-litres): it will take 2 days of continuous
running to raise the temperature of a pool from tap temperature to
swimming temperature. Heat loss will slow the heating process,
particularly during periods of cold weather, hence the higher the water
tempera-ture is to be maintained above average ambient air temperature,
the slower the heating process will become.
The only influencing factors are the level of insulation and the location of
the pool with regard to wind shelter.
www.elecro.co.uk
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