Raypak Xtherm 1505A Installation & Operating Instructions Manual

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20Recommended Level(s) Fiberglass Pools Fiberglass Spas Other Pool and SpaTypesWater Temperature 68-88°F (20-31°C) 89-104°F (31-40°C) 68-104°F (20-40°C)pH 7.3-7.4 7.3-7.4 7.6-7.8Total Alkalinity (ppm) 120-150 120-150 80-120Calcium Hardness (ppm) 200-300 150-200 200-400Salt (ppm) 3000 Maximum 3000 Maximum 3000 MaximumFree Chlorine (ppm)* 2-3 2-3 2-3Total Dissolved Solids(ppm) 1500 Maximum** 1500 Maximum** 1500 Maximum***Free Chlorine MUST NOT EXCEED 5 ppm!**In saltwater chlorinated pools, the total TDS can be as high as 4500 ppm.Table H: Pool Water ChemistryPool/Spa Water ChemistryChemical imbalance can cause severe damage to thepool heater and associated equipment. Maintain thewater chemistry according to the chart below. If themineral content and dissolved solids in the waterbecome too high, scale forms inside the heat exchang-er tubes, reducing heater efficiency and damaging theheater. If the pH drops below 7.2, this will cause cor-rosion of the heat exchanger and severely damage theheater. Heat exchanger damage resulting from chem-ical imbalance is not covered by the warranty.For your health and the protection of your pool equip-ment, it is essential that your water be chemicallybalanced. The following levels must be used as aguide for balanced water.Occasional chemical shock dosing of the pool or spashould not damage the heater providing the water isbalanced.Automatic chemical dosing devices and salt chlorina-NOTE: Chemical imbalance can cause severedamage to your heater and associated equipment.CAUTION: Corrosive water can cause unwar-rantable damage to the heater.tors are usually more efficient in heater water, unlesscontrolled, they can lead to excessive chlorine levelwhich can damage your heater.Further advice should be obtained from your pool orspa builder, accredited pool shop, or chemical suppli-er for the correct levels for your water.Automatic Chlorinators andChemical FeedersAll chemicals must be introduced and completely dilut-ed into the pool or spa water before being circulatedthrough the heater. Do not place sanitizing chemicalsin the skimmer. High chemical concentrations willresult when the pump is not running (e.g. overnight).Chlorinators must feed downstream of the heater andhave an anti-siphoning device to prevent chemicalback-up into the heater when the pump is shut off.NOTE: Failure of a heat exchanger due to limescale build-up on the heating surface, low pH orother chemical imbalance is non-warrantable.NOTE: High chemical concentrates from feedersand chlorinators that are out of adjustment will causerapid corrosion to the heat exchanger. Such damageis not covered under the warranty.NOTE: The allowable concentrations of salt and of the Total Dissolved Solids are lower for the XTherm thanfor a typical residential pool heater, due to the higher water temperatures at which an XTherm operates.