NTI VM110 Installation And Operation Instructions Manual

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NTI VM110 Installation And Operation Instructions Manual Manual pdf 49 page image

Vmax I&O Manual │Field Wiring4912.0 FIELD WIRINGAll wiring must be in accordance with the Canadian Electrical code, CSA C22.2 and any applicable local codes.Ensure that the wiring complies with this manual. The boiler must be electrically grounded in accordance withthe National Electrical Code ANSI/NFPA 70, local codes, and/or the Canadian Electrical Code CSA C22.1.Avoid Shocks - To Avoid Electrical Shock, turn off electrical power to the boiler prior toopening any electrical box within the unit. Ensure the power remains off while anywiring connections are being made. Failure to follow these instructions may result in component failure, seriousinjury or death.Field Wiring - Wire grommets must be used to secure wiring and prevent chafing whenpassing wiring through the cabinet wall. Failure to follow instructions may damage unit.Wiring ConnectionsElectrical rating for the Vmax is 120V / 1 Phase / 60 Hz / 12A. All line voltage wiring connections to the Vmax aremade at the junction box on the control panel located at the bottom of the boiler cabinet. The connections areaccessed by removing the front door of the boiler, followed by the removal of the control panel cover; see Figure12-1. Field wiring enters the cabinet through holes located on the bottom (underside) of the boiler cabinet; usesuitable strain-relief grommets to protect the wires. Field wiring connections are to be installed in accordancewith instructions provided in Figure 12-2 and Table 12-1.Fuse (120VAC) - The Vmax VM110 & VM110P are equipped with a 3.15 Amp fuse located at “F1” on theboiler controller at the top left; the fuse protects all 120VAC circuits within the boiler, as well as anycirculators connected to it. A spare fuse is located directly below the operating fuse in an open holder; seeFigure 18-1.Figure 12-1 Wiring Terminal AccessPower Supply - The Vmax VM110 & VM110P are designed to be powered using asingle phase 120VAC power supply that is fused (or protected via a circuit breaker) toallow a maximum of 15 Amps. Failure to follow instructions may result in componentfailure, serious injury or death.Field Wiring TerminalsControl Panel CoverWire Protection - When passing anywiring through the cabinet of the boiler, the installer must usewire grommets suitable for securing the wiring and preventingchafing. Failure to follow instructions may result in componentfailure, serious injury or death.