Trane GETB General Information, Unit Nameplate, Compressor Nameplate, Unit Description, Controls

General Information

Unit Nameplate

The unit nameplate is located at the front of the unit. It includes the unit model number, serial number, electri- cal characteristics, refrigerant charge, and other pertinent unit data.

Compressor Nameplate

The nameplate for the compressors are located on the compressor shell.

Unit Description

Before shipment, each unit is leak test- ed, dehydrated, charged with refriger- ant and run tested for proper control operation.

Water-to-Refrigerant Coils

The co-axial water-to-refrigerant heat exchanger for the 3/4-ton through 3- ton equipment is constructed of cop- per or cupro-nickel (option) for the wa- ter section and stainless steel for the refrigeration section.

The heat exchanger is leak tested to assure there is no cross leakage be- tween the water and refrigerant gas.

Water Connections

1/2" or 3/4" water connections are lo- cated on the chassis’s upper section and clearly labeled for water-in/out hose to riser hook-up.

Blower/Motor

The blower and motor is located inside the unit cabinet. The blower and motor may be removed from the cabinet through the chassis opening. After re- moving the chassis, the blower as- sembly is strapped into the unit cabinet through a single metal, flexi- ble bracket. We refer to this bracket as a housing belly bracket. After detach- ing one screw at the bottom/front edge of the bracket, the housing and motor are free to be lifted from the fan deck.

Sound Attenuation

Sound attenuation is applied as a stan- dard feature in the product design. The enhanced reduction package includes a heavy gage base plate, and gasket/ insulation around the compressor en- closure.

An optional deluxe sound reduction package is also available. It includes a heavy gage base plate, gasket and in- sulation around the compressor enclo- sure, and vibration isolation between the chassis and cabinet. An additional dampening treatment is applied around the compressor enclosure to achieve greater acoustical reductions.

Controls

The control system offered to control the unit is a Basic 24 volt control for the 3/4-ton through 2-ton retrofit (WPRD) equipment. A 50 VA trans- former is factory supplied on this unit configuration. See wiring diagram on chassis access panel for field wiring connection to the 24 volt mechanical thermostat.

Deluxe 24V Controls

(GET model)

Units containing the Deluxe 24V con- trol design will incorporate a micro- processor-based control board. The Trane microprocessor board is factory wired to a terminal strip to provide all necessary terminals for field connec- tion. The deluxe board is equipped with a random start relay, anti-short cycle timer, brown out protection, compressor disable, unit safety con- trol, diagnostics and a generic relay (which may be available for field use). See page 16 for diagnostic informa- tion.

Power wiring is made at the contactor. The wiring is fed through the left or right conduit tube, and into the cabi- net’s control box (contactor).

ZN510 Controls

(GET option)

Units incorporating the ZN510 control option design will include a digital LonTalkTM certified control board. The control board will support such op- tions as: random start delay, heating/ cooling status, occupied/unoccupied mode and fan/filter status.

Power wiring is made at the contactor. The wiring is fed through the left or right conduit tube, and into the cabi- net’s control box (contactor). See manual WSHP-IOP-2 for diagnostic in- formation.

Schrader Connections Connections for the low and high side of the refrigeration system are located conveniently on the chassis’ top be- neath a sheet metal plate.

WSHP-SVN08B-EN 5