Raypak X-THERM 1005–2005 Installation & Operating Instructions Manual

Also see for 1005-2005: Specification sheet Specifications

Automatic chemical dosing devices are usually moreefficient in heater water, unless controlled, they canlead to excessive chlorine level which can damageyour 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.Water HardnessRaypak water heaters can operate lime/scale-freeusing potable water with a hardness not exceeding 25gpg for models 1005 and 1505, and not exceeding 16gpg for model 2005. Proper operation is achieved bysetting the temperature rise/water flow per the guide-lines in the installation instructions. If the hardness ofthe water exceeds the maximum level of 25 gpg spe-cial measures must be taken to lower it. Water shouldbe softened to a hardness level no lower than 5 gpg.Water softened as low as 0 to 1 grain per gallon maybe under-saturated with respect to calcium carbonateresulting in water that is aggressive and corrosive.Gas SupplyGas piping must have a sediment trap ahead of theheater gas controls, and a manual shut-off valve lo-cated outside the heater jacket. It is recommendedthat a union be installed in the gas supply piping adja-cent to the heater for servicing. The gas supplypressure to the heater must not exceed 10.5 in. WC fornatural gas or 13.0 in. WC for propane gas.A pounds-to-inches regulator must be installed toreduce the gas supply pressure if it is higher thannoted above. This regulator should be placed a mini-mum distance of 10 times the pipe diameter upstreamNOTE: Failure of a heat exchanger due to limescale build-up on the heating surface, low pH orother chemical imbalance is non-warrantable.DANGER: Make sure the gas on which the heaterwill operate is the same type as specified on theheater’s rating plate.CAUTION: The heater must be disconnected fromthe gas supply during any pressure testing of the gassupply system at test pressures in excess of 1/2 psi(3.45 kPa).The heater must be isolated from the gas supply pip-ing system by closing the upstream manual shut-offvalve during any pressure testing of the gas supplypiping system at test pressures equal to or less than1/2 psi (3.45 kPa). Relieve test pressure in the gassupply line prior to re-connecting the heater and itsmanual shut-off valve to the gas supply line. FAILURETO FOLLOW THIS PROCEDURE MAY DAMAGETHE GAS VALVE. Over-pressurized gas valves arenot covered by warranty. The heater and its gas con-nections shall be leak-tested before placing theappliance in operation. Use soapy water for leak test.DO NOT use an open flame.Fig. 18: Gas Supply ConnectionCAUTION: Do not use Teflon tape on gas line pipethread. A pipe compound rated for use with naturaland propane gases is recommended. Applysparingly only on male pipe ends, leaving the twoend threads bare.CAUTION: Support gas supply piping withhangers, not by the heater or its accessories. Makesure the gas piping is protected from physicaldamage and freezing, where required.19of the heater gas controls. Refer to Table J on page 20for maximum pipe lengths.Gas Supply ConnectionNOTE: Soft = 0–4 grains per gallon; Medium = 5–15grains per gallon; Hard = 16–25 grains per gallon.CAUTION: The XTherm is not for use with saltwater chlorinators—damage to heater may occur.California Hot Water Supply, Inc.(800) 249-724419