Raypak 1000 Operating And Installation Manual

Raypak 1000 Operating And Installation Manual Manual pdf 24 page image

24SECTION I: ELECTRICAL POWER CONNECTIONSInstallations must follow these codes:∑ National Electrical Code and any other national, state, provincial or local codes or regulations havingjurisdiction.∑ Safety wiring must be N.E.C. Class 1.∑ Boiler must be electrically grounded as required by N.E.C. ANSI/NFPA 70-latest edition.∑ In Canada, C.S.A. C22. 1 C.E.C. Part 1.The boiler is wired for 120 Volts. The voltage is indicated on the tie-in leads. Consult the wiring diagram shipped withthe boiler in the instruction packet. The ìTHî leads are connected to the remote tank control stat, thermostat, or elec-tronic boiler control as applicable. 24 Volts are supplied to this connection through the boiler transformer. DO NOTattach line voltage to the ìTHî leads. Before starting the boiler check to insure proper voltage to the boiler and pump.Install a separate disconnect means for each load. Use appropriate-sized wire as defined by NEC, CSA and/or local code. Allprimary wiring should be 125% of minimum rating.It is strongly recommended that all individually-powered control modules and the boiler should be supplied from the samepower source.SURGE PROTECTIONMicroprocessor-based and solid state controls are vulnerable to damage from voltage and amperage fluctuations in thepower supply. All sensitive control components should be protected by a suitable commercial-grade surge protectiondevice.If any of the original wire as supplied with the boiler must be replaced, it must be replaced with 105∞C wire or itsequivalent.CHECK THE POWER SOURCEUsing a volt-ohm meter (VOM), check the following voltages at the circuit breaker panel prior to connecting any equipment:Make sure proper polarity is followed and house ground is proven.FIGURE I-1 AC = 108 Volts AC Minimum, 132 Volts MAXCHECK POWER SOURCE AB = 108 Volts AC Minimum, 132 Volts MAXBC = Must be less than 1.0 Volts ACFig # 9237