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Walgreens 5604-R14 June 24,2014 driers are factory-installed as standard. An area shall be Iprovided for replacement suction line driers. Phase monitor Phase monitor shall provide 100% protection for motors nd 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. There are no field adjustments. The module will automati�cally reset from a fault condition. Electric Heaters Electric heat modules shall be available for installation wi hin basic unit. Electric heater elements shall be constructed of heavy-duty nickel chromium elements internally delta co nected for 240 volt, wye connected for 480 and 600 volt. Staging shall be achieved through ReliaTel. Each heater package shall have automatically reset high limit control operating through heating element contactors. All heater shall be individually fused from the factory, where required, and shall meet all NEC and CEC requirements when proQerly installed Power assemblies shall provide single point connection. Electric heat modules shall be UL listed or C A certified. Through the Base Electrical with Disconnect Switch This 3-pole, molded case, disconnect switch with provisi ns for through the base electrical connections are available. The disconnect switch will be installed in the unit in a wat r tight enclosure with access through a swinging door.Wiring will be provided from the switch to the unit high voltage t rminal block. The switch will be UUCSA agency recognized. Note: The disconnect switch will be sized per NEC and L guidelines but will not be used in place of unit overcurrent protection. Economizer This accessory shall be available with or without baromet ic relief. The assembly includes fully modulating 0-100 percent motor and dampers, minimum position setting, p�eset linkage, wiring harness with plug, spring return actuator and fixed dry bulb control. The barometric relief shall pro�ide a pressure operated damper that shall be gravity closing and shall prohibit entrance of outside air during the equip�ent off cycle. Optional solid state or differential enthalpy control shall be available for either factory or field installat on. The economizer arrives in the shipping position and shall be moved to the operating position by the installing contr ctor. Motorized Outside Air Dampers Manually set outdoor air dampers shall provide up to 50 p rcent outside air. Once set, outdoor air dampers shall open to set position when indoor fan starts. The damper shall clo�e to the full closed position when indoor fan shuts down. Frostat This option is to be utilized as a safety device. The Frost t opens when temperatures on the evaporator coil fall below 10°F. The temperature will need to rise to 50°F before clo�sing This option should be utilized in low airflow or high outside air applications. (Cooling with Electric Heat Only.) T.rane Single Zone Variable Air Volume Control Sequ nce of Operation (Precedent 17 Plus) General Standbv Mode During normal occupied periods, when there is no space ooling or heating demands, the user will be able to choose Continuous or Cycling supply fan operation. During this p riod, if the supply fan is operating due to a Continuous Fan Mode selection or due to a ventilation request, the supply fan will operate at 50% of the user selected, application specific, maximum airflow. The unit controls will be compatible with BACnet and LonTalk Building Automation System communication interfaces. Cooling Operation Default Oqeration. During Cooling operation, the control will monitor the Sp ce Temperature and Space Cooling setpoint and with a PI contro algorithm determine if active cooling capacity is required.As the Space Temperature deviates from the Space Cooling Setpoint, the unit controller will calculate an active Discharge Air C�ooling setpoint that the economizer(if installed) and compressor outputs I will be controlled to meet. This active Discharge Air Cooling setpoint will be calculated between the Space Cooling setpoint and a user adjustable minimum (65F Default for Single Zone Variable Air Volume Control). Once the control determines that a discharge air temperature equal to the user selected minimum (65F Default) is required to meet the space cooling demand, if the space demand continues to increase, the supply fan speed will be allowed to increase above its minimum speed proportionally to meet FLD=Fumished by Trane U.S.Inc./Installed by Equipmlent Submittal Page 8 of 30 Others