Trane CAH-SVX01A-EN manual Duct Connections, Component Installation Requirements, Fans

Installation

Duct Connections

All duct connections to the units should be installed in accordance with the standards of the National Fire Protection Association (NFPA) for selecting and installing of air conditioning and ventilating systems other than residence type (NFPA 90A), and residence type warm air heating and air conditioning systems (NFPA 90B).

To ensure the highest fan efficiency, duct turns and transitions must be made carefully, minimizing air friction losses and turbulence. Proper duct work installation by such organizations as SMACNA (Sheet Metal and Air Conditioning Contractors National Association, Inc.) should be adhered to.

Component

Installation

Requirements

Each component in the Custom air handler may have installation requirements that could affect the unit’s performance.

Note: For components included in the unit but not included in this manual, reference the component manufacturers specific Installation, Maintenance, and Operation manual. Copies of these manuals are either included in the package with this unit IOM or are attached to the components mounted in the unit.

Fans

The fan and motor assembly are internally isolated. The fan and motor bases are bolted to a minimum of four spring isolators. The isolators are secured to the fan section support base. Shipping tie- down blocks are bolted to the isolators between the fan base and the isolator support frame.

To activate the isolation, remove the shipping tie-down blocks. Retain these blocks for use in adjusting isolators if necessary.

Isolator Adjustment

Note: Isolators are pre-adjusted and set at the factory. Follow this procedure only if necessary and as it applies to the isolators used in this unit. This procedure, for isolators can, and should be, performed by one person to ensure that the proper sequence is followed.

Isolators are selected for distribution of equipment weight, but may not all compress the same. This procedure assumes the base surface is level.

Isolators are not intended to be leveling devices.

1Verify that the shipping bolts that hold the fan base in a fixed position have been removed.

2Remove the jam nut on top of the isolator adjusting stud at the first isolator to be adjusted. Check that the shipping block is in place.

Figure 19. Isolator

￿WARNING Hazardous Voltage with Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

Note: For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN.

Turn the adjusting nut 2 or 3 turns only, counterclockwise on each isolator in a sequenced manner. The equipment weight will compress the spring inside the housing approximately 1/4 inch.

JAM NUT

SHIPPING

BOLT

FAN BASE

SHIPPING TIE- DOWN BLOCK (SHIM)

ADJUSTING

NUT

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