Trane WSC060-120 Electric Heaters, Roof Curb, Remote Potentiometer, Manual Outside Air Damper

Mechanical Specifications

Options/Accessories

Electric Heaters

Field-installed electric heat modules shall be available for installation within basic unit. Electric heater elements shall be constructed of heavy-duty nickel chromium elements internally delta connected for 200 volt, wye connected for 380-415 volt. Staging shall be achieved through the unit control processor (UCP). Each heater package shall have automatically reset high limit control operating through heating element contactors. All heaters shall be individually fused from the factory, where required. Power assemblies shall provide single-point connection.

Roof Curb

The roof curb shall be designed to mate with the downflow supply and return openings and provide support and a water tight installation when installed properly.The roof curb design shall allow field-fabricated rectangular supply/return ductwork to be connected directly to the curb. Curb shall be shipped knocked down for field assembly and shall include wood nailer strips.

Economizer

The economizer shall be either field or factory-installed and shall be available with or without barometric relief.The assembly includes fully modulating 0-100 percent motor and dampers, relief, minimum position setting, preset linkage, wiring harness with plug, spring return actuator and fixed dry bulb.The barometric relief damper provide a pressure operated damper that shall be gravity closing and shall prohibit entrance of outside air during the equipment “off” cycle. Solid state enthalpy and differential enthalpy control shall be factory or field- installed options.The factory-installed economizer arrives in the shipping position and shall be moved to the operating position by the installing contractor.

Phase Monitor

Phase monitor shall provide 100% protection for motors and compressors against problems caused by phase loss, phase imbalance, and phase reversal. Phase monitor is equipped with an LED that provides an ON or FAULT indicator.

Remote Potentiometer

The minimum position setting of the economizer shall be adjusted with this field-installed accessory.

Reference or Comparative Enthalpy Reference or Comparative Enthalpy option shall be available when a factory- installed economizer is ordered.

Clogged Filter/Fan Failure Switch A factory or field-installed dedicated differential pressure switch is available to achieve active fan failure indication and/ or clogged filter indication.These indications will be registered with either a zone sensor with status indication lights or an Integrated Comfort™ system.

Manual Outside Air Damper

Factory or field-installed rain hood and screen shall provide up to 50 pecent outside air.

Motorized Outside Air Dampers Factory or field-installed manually set outdoor air dampers shall provide up to 50 percent outside air. Once set, outdoor air dampers shall open to set position when indoor fan starts.The damper shall close to the full closed position when indoor fan shuts down.

Oversized Motors

Factory or field-installed direct drive oversized motors shall be available for high static applications.

High Pressure Cutout

Standard in all units.

Hinged Access Doors

Sheet metal hinges are available factory- installed on the Filter/Evaporator, Supply Fan/Heat, and the Compressor/Control Access Doors.

Discharge Air Sensing Kit

This factory or field-installed option provides true discharge air sensing in heating models.This sensor is a status indicator readable throughTracer™ or Tracker™.

Black Epoxy Coated Condenser Coil

The coil provides corrosion protection to condenser coils for seacoast application. The protection is a factory applied thermoset vinyl coating, bonded to normal aluminum fin stock.The uniform thickness of the bonded vinyl layer exhibits excellent corrosion protection in salt spray tests.

48 PKGP-PRC004-EN