York DM 300 User Manual

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262259-YTG-B-0107
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Unitary Products Group
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
2
 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.