Pool & Spa Heaters

GAS SUPPLY CONNECTIONSGas piping must have a manual shut-off valve locatedoutside the heater jacket. All gas piping should betested after installation in accordance with localcodes.CAUTION: The heater and its manual shut off valvemust be disconnected from the gas supply during anypressure testing of that system at test pressures inexcess of 150mbar (2.2psi). Dissipate test pressurein the gas supply line before reconnecting the heaterand its manual shut off valve to gas supply line.FAILURE TO FOLLOW THIS PROCEDURE MAYDAMAGE THE GAS VALVE. OVER PRESSUREDGAS VALVES ARE NOT COVERED BY WAR-RANTY. The heater and its gas connections shall beleak tested before placing the appliance in operation.Use soapy water for leak test. DO NOT use openflame.NOTE: Do not use PTFE tape on the gas line pipethread. A flexible sealant is recommended.Models 055 and 105 are fittef with a ½" BSP gascock,all others have a ¾" gascock.A minimum of 20 mbar (8”) WG and a maximum of 22mbar (8¾”) W.G.upstream pressure under load, andno load conditions are provided for natural gas or aminimum of 37mbar (14¾”) W.G.and a maximum of45 mbar (18”) W.G for propane gas.GAS PRESSUREFor LPG Heaters the gas pressure is regulated bythe injectors fitted in the factory. There is noadjustment.For NG Heaters the regulator on the gas valve isfactory set. If adjustment is required, remove thecap and turn the adjustment screw clockwise toincrease and counter-clockwiese to decrease theburner pressure.Honeywell Gas ValveBurner PressureadjustmentPIPE SIZING FOR GAS CONNECTIONSMAXIMUM EQUIVALENT PIPE LENGTH METRESN - NATURAL GAS @ 1.0 mbar PRESSURE DROPP - L.P.G. @ 2.5 mbarPRESSURE DROP10mm 15mm 22mm 28mmMODEL N P N P N P N055 6 12 15105 3 5 20155 10.5 >24 36185 8 >24 29265 4.5 18 14.5405 8.5 7152-06-04