Field Wiring; Wiring Terminal Access - NTI VM110 Installation And Operation Instructions Manual

Vmax I&O Manual
12.0

FIELD WIRING

All 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 with
the 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 to
opening any electrical box within the unit. Ensure the power remains off while any
wiring connections are being made. Failure to follow these instructions may result in component failure, serious
injury or death.
Field Wiring - Wire grommets must be used to secure wiring and prevent chafing when
passing wiring through the cabinet wall. Failure to follow instructions may damage unit.
Wiring Connections
Electrical rating for the Vmax is 120V / 1 Phase / 60 Hz / 12A. All line voltage wiring connections to the Vmax are
made at the junction box on the control panel located at the bottom of the boiler cabinet. The connections are
accessed by removing the front door of the boiler, followed by the removal of the control panel cover; see Figure
12-1. Field wiring enters the cabinet through holes located on the bottom (underside) of the boiler cabinet; use
suitable strain-relief grommets to protect the wires. Field wiring connections are to be installed in accordance
with 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 the
boiler controller at the top left; the fuse protects all 120VAC circuits within the boiler, as well as any
circulators connected to it. A spare fuse is located directly below the operating fuse in an open holder; see
Figure 18-1.
Power Supply - The Vmax VM110 & VM110P are designed to be powered using a
single phase 120VAC power supply that is fused (or protected via a circuit breaker) to
allow a maximum of 15 Amps. Failure to follow instructions may result in component
failure, serious injury or death.
Figure 12-1 Wiring Terminal Access
wiring through the cabinet of the boiler, the installer must use
wire grommets suitable for securing the wiring and preventing
chafing. Failure to follow instructions may result in component
failure, serious injury or death.
Field Wiring Terminals
Control Panel Cover
│Field Wiring
Wire Protection - When passing any
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