Raypak XTherm 1005A Installation And Operation Manual

Also see for Xtherm 1005A: Installation & operating instructions

243.12.2. Making the Electrical ConnectionsRefer to Figure 24 through Figure 28.1. Verify that circuit breaker is properly sized byreferring to heater rating plate. A dedicated circuitbreaker should be provided.2. NOTE: Current draw noted on rating plate does notinclude pump current.3. Turn off all power to the heater. Verify that powerhas been turned off by testing with a multi-meterprior to working with any electrical connections orcomponents.4. Observe proper wire colors while making electricalconnections. Many electronic controls are polaritysensitive. Components damaged by improperelectrical installation are not covered by warranty.5. Provide overload protection and a disconnect meansfor equipment serviceability as required by local andstate code.Figure 25. Wiring ConnectionsCIRCUITBREAKERWHITEGROUNDBLACKGREENA B CAA WARNING: Using a multi-meter, check the followingvoltages at the circuit breaker panel prior to connectingany equipment. Make sure proper polarity is followed andhouse ground is proven. (See Figs. 22-24.)Figure 26. Multi-meterCheck the power source:AC = 108 VAC Minimum, 132 VAC MAXAB = 108 VAC Minimum, 132 VAC MAXBC = <1 VAC Maximum6. Install heater controls, thermostats, or buildingmanagement systems in accordance with theapplicable manufacturers’ instructions.7. Conduit should not be used as the earth ground.NOTE: A grounding electrode conductor shall be usedto connect the equipment grounding conductors,the equipment enclosures, and the grounded serviceconductor to the grounding electrode.3.13. Field Wiring ConnectionsAA CAUTION: Label all wires prior to disconnection whenservicing controls. Wiring errors can cause improperand dangerous operation. Verify proper operation afterservicing.AA DANGER: SHOCK HAZARDMake sure electrical power to the heater is disconnectedto avoid potential serious injury or damage to components.3.13.1. Wiring the Enable/DisableConnect the Enable/Disable (terminals 11 and 12) wiringto the field wiring terminals as shown in Figure 29.Alternately, any dry contact closure (including a remotethermostat) across these terminals will enable the XThermheater to run.AA CAUTION: Ensure neither of the terminals are shortedto ground.3.13.2. Wiring the Outdoor Sensor1. If using an Outdoor Sensor, connect the sensorwires to the terminals (8 and 9) marked OUTDOORSENSOR. See Figure 29.AA CAUTION: Ensure sensor wiring is not shorted toground.2. Use a minimum 18 AWG stranded wire for runs of upto 150 ft (46 m).3. Mount the outdoor sensor on an exterior surface ofthe building, preferably on the north side in an areathat will not be affected by direct sunlight and thatwill be exposed to varying weather conditions.