Field Wiring; Line Voltage Connections - NTI Tft60 - 399 Installation And Operation Instructions Manual

Tft Series

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.

Line Voltage Connections

Electrical rating for the Trinity Tft is 120V / 1 Phase / 60 Hz / 12A. All line voltage wiring connections to the
Trinity Tft are made at the junction box in 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. Field connections are to be installed in accordance with Figure 12-1 and Table 12-1. Holes are located on
the bottom (underside) of the control panel junction box.
Fuses (120VAC) – The Trinity Tft is equipped with two 7 Amp fuses to protect 120VAC system components.
The fast-acting fuses are located on the left side of the control panel and are easily accessed upon removal of the
front cover of the boiler cabinet.
 Fuse A: Protects the blower, spark generator and PUMP B output circuits.
 Fuse B: Protects PUMP A and PUMP C output circuits.
Wire Protection - When passing any 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.
Power Supply - The Trinity Tft is 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.
Labeling - Label all wires prior to disconnecting them when servicing controls. Wiring
errors can cause improper and dangerous operation. Failure to follow instructions may
result in property damage or personal injury.
Continuity - Before connecting the line voltage wiring, perform a continuity check
between all wires and ground to make sure that there are no electrical leaks that could
blow a fuse or damage electrical components. Also check the polarity of the line and neutral wires. Line must
measure 120VAC to ground; neutral must measure zero. Failure to follow instructions may damage the unit.
Max Load - Circulator outputs (PUMP A, B, C) are each limited to operating a
circulator with a maximum current load of 3 Amps or a maximum 1/6 hp motor. See
Table 12-1.
Installation and Operation Instructions
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Trinity
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