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

Also see for 1005-2005: Specification sheet Specifications

• 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.XTherm 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 15A service for the heater and 15A service forthe heater pump or a single 30A rated circuit. Model1505 heaters equipped for hard water require 15Aservice for the heater and 20A service for the heaterpump or a single 40A rated circuit. Model 2005heaters require 20A service for the heater and 20Aservice for the heater pump, or a single 40A 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.Field-Connected ControllersIt is strongly recommended that all individually-pow-ered control modules and the heater should besupplied from the same power source.Gas Supply PressureA minimum of 4.0 in. WC and a maximum of 10.5 in.WC upstream gas pressure is required under load andno-load conditions for natural gas. A minimum of 4.0in. WC and a maximum of 13.0 in. WC is required forpropane gas. If upstream pressure exceeds these val-ues, an intermediate gas pressure regulator, of thelockup type, must be installed.When connecting additional gas utilization equipmentto the gas piping system, the existing piping must bechecked to determine if it has adequate capacity forthe combined load. The gas valve pressure regulatoron the heater is nominally preset as noted in Table K.During normal operation, carbon dioxide should be 8.5to 9.0% at full fire for natural gas and between 9.5 and10.0% for propane gas. Carbon monoxide should be‹100ppm.Electrical Power ConnectionsInstallations must follow these codes:• National Electrical Code and any other national,state, provincial or local codes or regulations hav-ing jurisdiction.Natural Gas – 1,000 BTU/ft3 , 0.60 specific gravity at 0.5 in. WC pressure dropPropane Gas – 2,500 BTU/ft 3 , 1.53 specific gravity at 0.6 in. WC pressure dropTable J: Maximum Equivalent Pipe LengthNOTE: Manifold pressures should be ±0.2 in. WC.Table K: Manifold Gas Pressure SettingsModel No.Manifold Gas Pressure(High Fire Values)Natural Gas Propane Gas1005 -1.1 -0.61505 -1.6 0.32005 -1.8 -2.0ModelNo.1-1/4” NPT 1-1/2” NPT 2” NPT 2-1/2” NPTN P N P N P N P1005 35 55 35 90 125 300 3001505 10 15 15 25 60 150 150 2752005 35 90 85 210California Hot Water Supply, Inc.(800) 249-724420