Trane LO manual Factory Piping Package Connections, Piping Considerations

Factory Piping

Package

Connections

Piping Considerations

Connecting Water Piping to Factory Piping Package

Before installing water piping supply and return lines to factory piping package, note the following items.

·All piping connections are 5/8 inch O.D. (1/2 inch nominal) female copper connections.

·The fan-coil supply and return piping should not interfere with the auxiliary drain pan or condensate line. See “Connecting the Condensate Drain” section on page 25 for more information.

·The installer must provide adequate piping system filtration and water treatment.

·If the unit has a factory deluxe piping package, the piping includes a strainer with a 20 mesh size screen, which allows minimal protection from debris. Therefore, clean the strainer regularly.

NOTE: Maintain a minimum distance of one foot between the reduction fitting for the 1/2 inch diameter line and the fan-coil piping connections.

1.The factory piping package ships with brackets to adequately support the piping during shipment. Remove these brackets before connecting water piping to the unit. See Figure 9.

2.Close the piping end valves to the fully open position to prevent damage to the valve seat during brazing.

3.Remove the auxiliary drain pan, if it is in place, to prevent expo- sure to dripping solder or excessive temperatures.

4.Solder water piping connections to supply and return end connections. Avoid overheating

factory soldered joints to prevent the possibility of leakage.

5.Insulate fan-coil piping to

auxiliary drain pan connections and any piping that is not above the auxiliary drain pan.

Figure 9. Remove the shipping brackets which support the factory piping package before connecting piping.

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