Trane manual Controls using 24 VAC, Installation, Packaged Heat Pump WC-IOM-7

Installation

The transformer is located in the control panel. The circuit breaker is located on the left side of the transformer and can be reset by pressing in on the black reset button.

Controls using 24 VAC

Before installing any connecting wiring, refer to Unit Dimensions for the electrical access locations provided on the unit and Table 2 for AC conductor sizing guidelines, and;

1.Use copper conductors unless otherwise specified.

2.Ensure that the AC control wiring between the controls and the unit’s termination point does not exceed three (3) ohms/conductor for the length of the run.

Note: Resistance in excess of 3 ohms per conductor may cause component failure due to insufficient AC voltage supply.

3.Be sure to check all loads and conductors for grounds, shorts, and mis- wiring.

4.Do not run the AC low voltage wiring in the same conduit with the high voltage power wiring.

5.Route low voltage wiring per illustrations on Figure 11.

Table 2. Electromechanical Thermostat 24V AC conductors with ReliaTel™

Distance from Unit to Control Recommended Wire Size

000 - 460 feet		18 gauge
000	- 140 m	.75 mm2
461 - 732 feet		16 gauge
141	- 223 m	1.3 mm2
733 -	1000 feet	14 gauge
224	- 305 m	2.0 mm2

Controls using DC Analog Input/Outputs (Standard Low Voltage Multiconductor Wire)

Before installing any connecting wiring between the unit and components utilizing a DC analog input\output signal, refer to Unit Dimensions for the electrical access locations provided on the unit.

1.Table 3 lists the conductor sizing guidelines that must be followed when interconnecting the DC binary output devices and the system components utilizing a DC analog input\output signal to the unit.

26 Packaged Heat Pump • WC-IOM-7