Raypak Hi Delta 302A-902A Installation And Operating Instructions Manual

23CIRCUITBREAKERWHITEGROUNDBLACKGREENA B CFig. 18: Wiring ConnectionsCheck the power source:AC = 108 VAC Minimum, 132 VAC MAXAB = 108 VAC Minimum, 132 VAC MAXBC = <1 VAC MaximumIf the heater does not have a factory-wired stage con-troller, it is factory-wired in an on-off configuration withother stage terminals jumpered.To field-connect a stage controller, remove factory-installed jumper and wire stage controller as shown inFig. 21.Making the Electrical ConnectionsRefer to Fig. 18-23.1. Verify that circuit breaker is properly sized byreferring to heater rating plate. A dedicated circuitbreaker should be provided.2. Turn off all power to the heater. Verify that powerhas been turned off by testing with a multi-meterFig. 19: Multi-meterprior to working with any electrical connections orcomponents.3. Observe proper wire colors while making electri-cal connections. Many electronic controls are po-larity sensitive. Components damaged by improp-er electrical installation are not covered by warran-ty.4. Provide overload protection and a disconnectmeans for equipment serviceability as required bylocal and state code.5. Install heater controls, thermostats, or buildingmanagement systems in accordance with theapplicable manufacturers’ instructions.6. Conduit should not be used as the earth ground.Field Wiring ConnectionNOTE: A grounding electrode conductor shall beused to connect the equipment grounding conduc-tors, the equipment enclosures, and the groundedservice conductor to the grounding electrode.CAUTION: Label all wires prior to disconnectionwhen servicing controls. Wiring errors can cause im-proper and dangerous operation. Verify proper oper-ation after servicing.Fig. 20: Wiring Location