Raypak Xtherm 1505A Installation & Operating Instructions Manual

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22XTherm heaters are wired for 120VAC single phasepower. Models 1005 and 1505, except WH 1505 mod-els equipped with a heater pump for hard water,require 20A service for the heater and 15A service forthe heater pump or a single 40A rated circuit. Model1505 heaters equipped for hard water require 15Aservice for the heater and 25A service for the heaterpump or a single 50A rated circuit. Model 2005heaters require 25A service for the heater and 25Aservice for the heater pump, or a single 50A service.Consult the wiring diagram shipped with the heater.Use appropriately sized wire as defined by NEC, CSAand/or local codes. All primary wiring should be ratedfor 125% of the minimum required service. Beforestarting the heater, verify that the correct 120VAC volt-age is being supplied to the heater and pump.If any of the original wire supplied with the heater mustbe replaced, it must be replaced with 105°C or itsequivalent.Power is connected to the heater via the rear wiringbox as shown at the top of Fig. 19. Main heater poweris connected to terminals 1, 2 and 3 and pump poweris connected to terminals 4, 5 and 6.Field wiring connections such as sensors, interlocks,enable/disable and alarm contacts are made at the lowvoltage terminal strip at the front of the heater asshown at the bottom of Fig. 19.Electrical Power ConnectionsInstallations must follow these codes:• National Electrical Code and any other national,state, provincial or local codes or regulations hav-ing jurisdiction.• Safety wiring must be NEC Class 1.• Heater must be electrically grounded as requiredby the NEC.• In Canada, CSA C22. 1 C.E.C. Part 1.Natural Gas – 1,000 BTU/ft3 , 0.60 specific gravity at 0.5 in. WC pressure drop•Propane Gas – 2,500 BTU/ft3 , 1.53 specific gravity at 0.6 in. WC pressure drop•Table I: Maximum Equivalent Pipe LengthNOTE: Manifold pressures should be ±0.2 in. WC.Table J: Manifold Gas Pressure SettingsModel No.1-1/4” NPT 1-1/2” NPT 2” NPT 2-1/2” NPTN P N P N P N P1005A 35 55 35 90 125 300 3001505A 10 15 15 25 60 150 150 2752005A 35 90 85 210Model No.Manifold Gas Pressure(High Fire Values)Natural Gas Propane Gas1005A -4.6 -6.61505A -7.1 -8.02005A -4.2 -9.3