Trane UniTrane Fan-Coil & Force Flo Air Conditioners General Operation information, Relay Board

general

Operation information

General Information

Relay Board

The relay board is a new component on all models (except those with a unit- mounted, line-voltage fan speed switch) that replaces all the loose wires in the control box. It consolidates many control components onto one board, therefore making it easy to troubleshoot in the field. There is an LED on the board that indicates when power is supplied to the board. All connections are made to match up only with the applicable component to, thus prevent miswiring. Factory switches are pre-set and locked in place with lock- tight. The switch settings can be broken if field-modifications are needed. However, switches must be properly set for the unit to operate safely and properly. See Figure O-GI-1.

Manual Fan Mode Switch

The manual fan mode switch is available with a four-position switch (off-hi-med-lo) allows manual fan mode selection and is available unit or wall mounted. See Figure O-GI-2.

The unit-mounted option operates on line voltage. The wall mounted option is low- voltage and has three 24-volt relays using a factory-wired transformer and relays to control the fan motor.

Tracer ZN010 & ZN510

Tracer ZN010 is a stand-alone device that controls fan-coils and cabinet heaters. Tracer ZN510 can be stand-alone or use peer-to-peer communications.

The controller is easily accessible in the control end panel for service. The control end panel is on the end of the unit

opposite the piping. Reference Figure O- Figure O-GI-2. Fan speed switch GI-3.

Figure O-GI-1. Relay board

Figure O-GI-3. Tracer ZN010 board

UNT-SVX07A-EN 49