York WR 180 User Manual

262292-YTG-C-0707

10

Unitary Products Group

NOTE: Knobs are shipped separately within the unit to

prevent shipping damage. These must be field
installed for tool free operation.

• HINGED/"TOOL FREE" BLOWER, BLOWER MOTOR, 

FILTER AND ELECTRIC ACCESS PANELS - This option 
allows for complete hinged and tool free access to the unit's 
blower, blower motor, filters and electrical panel sections.

• SINGLE INPUT ELECTRONIC ENTHALPY 

ECONOMIZERS - Includes a slide-in / plug-in damper 
assembly with fully modulating spring-return motor 
actuator capable of introducing up to 100% outdoor air 
with nominal 1% leakage type dampers.

The enthalpy system contains one sensor that monitors 
the outdoor air and determines when the air is cool 
enough and dry enough to provide free cooling.

The rainhood is painted to match the basic unit and must 
be field-assembled before installing.

• MOTORIZED OUTDOOR AIR INTAKE DAMPER - 

Includes a slide-in / plug-in damper assembly with a 2-
position, spring return motor actuator which opens to 
some pre-set position whenever the supply air blower is 
operating and will drive fully closed when the blower unit 
shuts down.

The rain hood is painted to match the basic unit and must 
be field-assembled before installing.

• ROOF CURBS - Fourteen-inch high roof curbs provide a 

water-tight seal between the unit and the finished roof. 
These full perimeter curbs meet the requirements of the 
National Roofing Contractors Association (NRCA) and are 
shipped knocked-down for field assembly.

They're designed to fit inside the base rails of the unit and 
include both a wood nailing strip and duct hanger 
supports.

• HIGH ALTITUDE NATURAL GAS - Burner orifices and 

pilot orifices are provided for proper furnace operation at 
altitudes up to 6,000 feet.

• PROPANE - Burner orifices, pilot orifices and gas valve 

parts are provided to convert a natural gas furnace to 
propane.

• HIGH ALTITUDE PROPANE - Burner orifices and pilot 

orifices are provided for proper furnace operation at 
altitudes up to 6,000 feet. This accessory supplements the 
basic propane conversion kit.

• SIDE DUCT FLANGES - One-inch flanges replace the 

supply and return air panels on the rear of the unit to 
accommodate horizontal duct connections. These flanges 
can also be used individually for bottom supply/horizontal 
return or horizontal supply/bottom return. They cannot be 
used on units with power exhaust.

• BAROMETRIC RELIEF DAMPER - This damper 

accessory can be used to relieve internal building air 
pressure on units with an economizer without power 
exhaust. This accessory includes a rain hood, a bird 
screen and a fully assembled damper. With bottom duct 
connections, the damper should be mounted over the 
opening in the return air panel. With horizontal ductwork, 
the accessory should be mounted on the return air duct.

• ENTHALPY ACCESSORY CONTROL KIT - This kit 

contains the required components to convert a single 
enthalpy economizer to dual enthalpy.

• BURGLAR BARS - Mount in the supply and return 

openings to prevent entry into the duct work.

• FLUE EXHAUST EXTENSION KIT - In locations with 

wind or weather conditions which may interfere with 
proper exhausting of furnace combustion products, this kit 
can be installed to prevent the flue exhaust from entering 
nearby fresh air intakes.

• WOOD SKID - Allows unit to be handled with 90” forks.

• CO

 SENSOR - Senses CO

2

 levels and automatically 

overrides the economizer when levels rise above the 
present limits.

• COIL GUARD - Customers can purchase a coil guard kit 

to protect the condenser coil from damage. This is not a 
hail guard kit.

• PHASE MONITORS - Designed to prevent unit damage. 

The phase monitor will shut the unit down in an out-of-
phase condition.