Trane LO manual General Information

General Information

UniTrane® fan-coil and Force Flo™ cabinet heaters units are single room units with load capabilities of 200 to 1200 cfm. See Figure 1 for unit components. Fan-coil units are available as 2-pipe with or without electric heat (one hydronic circuit) or 4-pipe (two hydronic circuits). Force Flo™ units feature 2-pipe hydronic coils, electric heat only, or steam only. Also, units feature a variety of factory piping packages. See the Appendix on page 100 for more information on available factory-installed piping packages.

Three control options are available with the UniTrane® fan-coil and Force Flo™ cabinet heater units.

1.fan mode switch

2.Tracer® ZN.010 and ZN.510, ZN.520

3.terminal unit controller (TUC)

All control options are available as unit or wall mounted. Units with a Tracer® ZN.010, ZN.510, ZN.520 or TUC also feature a split combina- tion: unit mounted fan mode switch with a wall mounted setpoint dial.

The Tracer® controllers (ZN.010, ZN.510 and ZN.520) utilize binary outputs to operate 2-position control valves, supply fan/s, 2-position dampers, and electric heat.

The TUC utilizes binary outputs to control the fan and optional auxiliary heat. In addition, it operates 2-position or 3 wire floating point control valves and the fresh air damper.

Available supply and return openings vary with each cabinet style. In addition, a fresh air opening with either a manual or motorized air damper is an available option. See pages 4-5 for available cabinet

styles.	Hydronic coil	Piping package
Control panel

*Main drain pan

Supply fan(s)

Throwaway filter

Fan motor(s)

*Auxiliary

drain pan

*Featured on fan-coils only

Figure 1. Main components of a fan-coil or cabinet heater unit.

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