York DJ 150 manual 036-21484-001-B-0103

Models: DJ 150

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Both the unit control board and ignition control board uti- lize flash codes to aid in diagnosis of unit malfunctions. Unique alarm codes quickly identify the source of the unit alarm.

All units use the same standard filter size. This standard- ization removes any confusion on which filter sizes are needed for replacement.

The non-corrosive drain pan slides out of the unit to per- mit easy cleaning. The drain pan is accessed by remov- ing the drain pan cover plate on the rear of the unit. Once the plate is removed, the drain pan slides out through the rear of the unit.

All Predator™ Magnum units have a second model nameplate located inside the control access door. This is to prevent deterioration of the nameplate through weath- ering.

Environmentally Aware – For improved Indoor Air Quality, foil faced insulation is used exclusively through- out the units.

Balanced Heating – The Predator™ Magnum offers “Ultimate Heating Comfort” with a balance between 1st and 2nd stage gas heating. The first stage of a gas heat Predator™ Magnum unit provides 60% of the heating capacity. Balanced heating allows the unit to better main- tain desired temperatures.

Convertible Airflow Design – The side duct openings are covered when they leave the factory. If a side supply/ return is desired, the installer simply removes the two side duct covers from the outside of the unit and installs them over the down shot openings. No panel cutting is required. Convertible airflow design allows maximum field flexibility and minimum inventory.

System Protection – Suction line freezestats are sup- plied on all units to protect against loss of charge and coil frosting when the economizer operates at low outdoor air temperatures while the compressors are running. Every unit has solid-core liquid line filter-driers and high and low-pressure switches. Internal compressor protection is standard on all compressors. Crankcase heaters are standard on reciprocating compressors. Scroll compres- sors do not require crankcase heaters.

Advanced Controls - control boards have standardized a numberSimplicityof features previously available only as options or by utilizing additional controls.

Low Ambient - An integrated low-ambient control allows all units to operate in the cooling mode down to 0°F outdoor ambient without additional assis- tance. Optionally, the control board can be pro- grammed to lockout the compressors when the outdoor air temperature is low or when free cooling is available.

Anti-Short Cycle Protection - To aid compressor life, an anti-short cycle delay is incorporated into the standard controls. Compressor reliability is further ensured by programmable minimum run times. For

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testing, the anti-short cycle delay can be temporarily overridden with the push of a button.

Fan Delays - Fan on and fan off delays are fully pro- grammable. Furthermore, the heating and cooling fan delay times are independent of one another. All units are programmed with default values based upon their configuration of cooling and heat.

Phase Monitor - This accessory monitors the incoming power to the unit and protects the unit from phase loss and reversed phase rotation (Standard on units with scroll compressors).

Safety Monitoring - The control board monitors the high and low-pressure switches, the freezestats, the gas valve, if applicable, and the temperature limit switch on gas and electric heat units. The unit con- trol board will alarm on ignition failures, compressor lockouts and repeated limit switch trips.

Nuisance Trip Protection and Strikes - To prevent nuisance trouble calls, the control board uses a “three times, you’re out” philosophy. The high and low-pressure switches and the freezestats must trip three times within two hours before the unit control board will lock out the associated compressor.

On Board Diagnostics - Each alarm will energize a trouble light on the thermostat, if so equipped, and flash an alarm code on the control board LED. Each high and low-pressure switch alarm as well as each freezestat alarm has its own flash code. The control board saves the five most recent alarms in memory, and these alarms can be reviewed at any time. Alarms and programmed values are retained through the loss of power.

Reliable – From the beginning – All units undergo com- puter automated testing before they leave the factory. Units are tested for refrigerant charge and pressure, unit

amperage, and 100% functionality. For the long term – All Predatorunits are painted with a long lasting, pow- der paint that stands up over the life of the unit. The paint used has been proven by a 750 hour salt spray test.

Flexible Placement – All models and configurations share the same cabinet/footprint and thus the same roof curb. You have the flexibility to set one curb and choose the correct tonnage size and heating option after the internal loads have been determined.

To further simplify planning and installation, Predator™ Magnum cabinets are designed to fit your roof. With the optional roof curb, the unit ductwork is designed to fit around 24” on-center joists or between 48” on-center joists.

The drain pan can be rotated to drain to either the front or the rear of the unit. Additionally, the drain pan can be fitted to drain through the roof curb. As it is sometimes difficult to have a level installation, the drain pan features a generous slope to ensure proper drainage.

Full Perimeter Base Rails – The permanently attached base rails provide a solid foundation for the entire unit

Unitary Products

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York DJ 150 manual 036-21484-001-B-0103