TZAA High Efficiency Commercial Condensing Unit – 7.5 Ton
APPLICATION: This product is shipped with a nitrogen holding charge that must be vented prior to evacuation and charging and is identified by a tag on the unit shipping carton and on one of the unit service valves. This product is only intended for Commercial Condensing Unit change-out in existing R-22 systems with a matched indoor unit. This product must be charged with R-22 refrigerant meeting AHRI 700 purity standard.
FEATURES:
- CABINET—Galvanized steel with powder coat paint finish. The powder coat paint finish is high gloss, durable and capable of withstanding a 1000-HR salt spray test per ASTM B117. The unit is of the frame and panel type of construction which allows all access panels to be opened or removed without affecting the structural strength of the unit. Fastening screws are also of the 1000-HR type. Stamped louver panels offer 100% protection for the condenser coil.
- BASE PAN—Galvanized steel with powder coat paint finish.
- SERVICE ACCESS—Control box with separation between line and control voltages, as well as compressor and other refrigerant controls are accessible through removable panel without affecting normal operation of unit.
- FAN MOTOR—Condenser fan motor(s) are mounted on removable top panel(s) which bring the motor(s) out to you and expose entire condenser coil for cleaning.
- COMPRESSOR—The Scroll Compressor is hermetically sealed with internal high temperature protection, and durable insulation on motor windings. The entire compressor is mounted on rubber grommets to reduce vibration and noise. Compressors have an internal pressure relief assembly to protect against excessive pressure differential. There is a separate compressor compartment for easy service access.
- COMPRESSOR CRANKCASE HEATER—External wraparound heater helps prevent refrigerant migration to the compressor oil during long off periods.
- CONDENSER COILS—Constructed with copper tubes and aluminum fins mechanically bonded to tubes for maximum heat transfer capabilities. All coil assemblies are leak tested up to 450 PSIG internal pressure.
- REFRIGERANT CONNECTIONS—All field sweat joints are made external of the unit and are located close to the ground for a neat looking installation.
- LOW AMBIENT CONTROL—A pressure sensitive fan cycling control allows operation of units down to 0°F [-18°C].
- HIGH PRESSURE CONTROL—Manual reset control deactivates system if abnormally high pressure occurs.
- LOW PRESSURE CONTROL—Automatic reset control deactivates system if abnormally low pressure or refrigerant loss occurs.
- SERVICE VALVES—Standard on liquid and suction lines.
- CONDENSER FAN MOTORS—Direct drive, single-phase permanently lubricated “PSC” motors with inherent overload protection.
- TRANSFORMER—50VA step-down type, from Line to 24 volts.
- CONTACTOR—The contactor is an electrical switch which operates the compressor and condenser fans. Its 24 volt coil is activated through the High Pressure Control and Low Pressure Control on a call for cooling.
- EQUIPMENT GROUND—Lug for field connection of ground wire.
- TESTING—All units are run tested at the factory prior to shipment. Units are shipped with a holding charge of nitrogen.
- CONTROL BOX—The control box is located in the top corner of the cabinet providing for easy access through a service panel.
- COMPRESSOR TIME DELAY CONTROL—Compressor will remain off for five minutes after power or thermostat interruption, allowing system pressures to equalize. (Model No. RXMD-B01)
- FILTER/DRIER—A liquid line filter drier is shipped with each unit for field installation.
ACCESSORIES:
- Anti-Short Cycle Timer Kit
- Sight Glass
- Liquid Line Solenoid Valve
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Warranty Information
