Interconnecting Wiring Chilled Water Flow Pump Interlock Chilled Water Pump Control Relay Assignments Using TechView Low Voltage Wiring Emergency Stop External Circuit Lockout — Circuit 1 and Circuit Ice Building Option Communications Interface options Optional Tracer Communications Interface Operating Principles Refrigeration Cycle Refrigerant Ra Condenser and Subcooler Expansion Valve Oil System Controls Interface CH Communications Overview DynaView Interface Key Functions Radio Buttons Spin Value Buttons Action Buttons Hot Links File Folder Tabs Display Screens Basic Screen Format Front Panel Lockout Feature Modes Screen Chiller Screen Compressor Screen Refrigerant Screen Setpoint Screen Diagnostic Screen Display Formats Minimum PC requirements to install and operate TechView Unit View Compressor Service View Status View Setpoint View Diagnostics View Software View Binding View Replacing or Adding Devices Software Download Legend to Diagnostics Table Pre-Start Checkout Installation Checklist Unit Location and Mounting Unit Piping Electrical Wiring Unit Voltage Power Supply Unit Voltage Imbalance Unit Voltage Phasing Water System Flow Rates Water System Pressure Drop CH Set-Up Unit Start-Up Procedures Daily Unit Start-Up Seasonal Unit Start-Up Procedure System Restart After Extended Shutdown Unit Shutdown Procedures Temporary Shutdown And Restart Extended Shutdown Procedure Periodic Maintenance Weekly Maintenance Maintenance Procedures Refrigerant and Oil Charge Management Ra Field Charging Procedure Factory initial Refrigerant Charging Procedure Field Refrigerant Charging Procedure Adding charge Charge Isolation in the high or low side of system High side charge isolation procedure Returning unit to running condition Low side charge isolation procedure Refrigerant Filter Replacement Procedure Lubrication System Oil Charging Procedure Factory initial Oil Charging Procedure Evaporator tube replacement Compressor Replacement Unit Wiring New manual describes installation, operation, and maintenance of RTAC units and the remote evaporator option.
Revised manual includes additional RTAC units to size tons, new installation and maintenance material, and expanded CH diagnostics. Revised manual for new evaporator design for 2 compressor units.
Design Sequence H0 and later. Revised manual for new evaporator design for 3 and 4 compressor units. Design Sequence J0 and later. When the unit arrives, compare all nameplate data with ordering, submittal, and shipping information.
A typical unit nameplate is shown in Figure 1. When the unit is delivered, verify that it is the correct unit and that it is properly equipped. Compare the information which appears on the unit nameplate with the ordering and submittal information. Inspect all exterior components for visible damage. Specify the extent and type of damage found and notify the appropriate Trane Sales Office. Do not proceed with installation of a damaged unit without sales office approval. To protect against loss due to damage incurred in transit, complete the following checklist upon receipt of the unit.
Check for obvious damage to the unit or packing material. Concealed damage must be reported within 15 days. Do not remove damaged material from the receiving location. Take photos of the damage, if possible. The owner must provide reasonable evidence that the damage did not occur after delivery. Request an immediate, joint inspection of the damage with the carrier and the consignee.
Check all the accessories and loose parts which are shipped with the unit against the shipping list. The - ton Model RTAC units are helical-rotary type, air-cooled liquid chillers designed for installation outdoors. The compressor circuits are completely assembled, hermetic packages that are factory-piped, wired, leak-tested, dehydrated, and tested for proper control operation before shipment. Figure 2 shows a typical RTAC packaged unit and its components. Chilled water inlet and outlet openings are covered for shipment.
Each compressor has a separate compressor motor starter. This reduces the leakage between highand low-pressure cavities during compression, allowing for more efficient compressor operation. The combination patented unloading system onTrane helical-rotary compressors uses the variable.
Much of this excess capacity is lost because overcooling goes toward removing building latent heat, causing the building to be dried beyond normal comfort requirements.
When the load becomes very low, the compressor also uses a step unloader valve, which is a single unloading step to achieve the minimum unloading point of the compressor. The result of this design is optimized part-load performance far superior to single reciprocating compressors and step-only helicalrotary compressors.
TheTrane Model RTAC chiller averages a 20 percent reduction in physical footprint, while the greatest change is actually 40 percent smaller when compared against the previous design. This improvement makes the RTAC the smallest air-cooled chiller in the industry and a prime candidate for installations that have space constraints. All physical sizes were changed without sacrificing the side clearances needed to supply fresh airflow without coil starvation—the tightest operational clearances in the industry.
In situations where equipment must be installed with less clearance than recommended, which frequently occurs in retrofit applications, restricted airflow is common.
Conventional chillers may not work at all. Consult yourTrane sales engineer for more details. All air-cooled Series R chillers are given a complete functional test at the factory. This computer-based test program completely checks the sensors, wiring, electrical components, microprocessor function, communication capability, expansion valve performance, and fans. In addition, each compressor is runtested to verify capacity and efficiency.
An example would be the leaving-liquid temperature set point. The result of this test program is that the chiller arrives at the job site fully tested and ready for operation. All Series R chiller options, including main power-supply disconnect, low ambient control, ambient temperature sensor, low ambient lockout, communication interface and icemaking controls are factory installed and tested.
Some manufacturers send accessories in pieces to be field installed. WithTrane, the customer saves on installation expense and has assurance that ALL chiller controls and options have been tested and will function as expected.
With the Adaptive Control microprocessor, unnecessary service calls and unhappy tenants are avoided. The unit does not nuisance-trip or unnecessarily shut down. Only when theTracer chiller controls have exhausted all possible corrective actions, and the unit is still violating an operating limit, will the chiller shut down. Controls on other equipment typically shut down the chiller, usually just when it is needed the most.
A hot day is just when comfort cooling is needed the most. In contrast, the aircooled Series R chiller with an Adaptive Control microprocessor will stage fans on, modulate the electronic expansion valve, and modulate the slide valve as it approaches a high-pressure cutout, thereby keeping the chiller on line when you need it the most.
Trane air-cooled chillers are well-suited for ice production. The unique ability to operate at decreased ambient temperature while producing ice results in approximately the same amount of work for the compressor. An air-cooled machine typically switches to ice production at night. Two things happen under this assumption. First, the leaving brine temperature from the evaporator. Second, the ambient temperature has typically dropped about 8. This effectively places a lift on the compressors that is similar to daytime running conditions.
The Model RTAC produces ice by supplying ice storage tanks with a constant supply of glycol solution. Aircooled chillers selected for these lower leaving-fluid temperatures are also selected for efficient production of chilled fluid at nominal comfort-cooling conditions.
When cooling is required, ice-chilled glycol is pumped from the ice storage tanks directly to the cooling coils. No expensive heat exchanger is required. The glycol loop is a sealed system, eliminating expensive annual chemical treatment costs. The air-cooled chiller is also available for comfort-cooling duty at nominal cooling conditions and efficiencies. The ice-storage system is operated in six different modes, each optimized for the utility cost at a particular time of day.
Provide comfort cooling with chiller. Provide comfort cooling with ice. Provide comfort cooling with ice and chiller. Freeze ice storage when comfort cooling is required. Tracer optimization software controls operation of the required equipment and accessories to easily move from one mode of operation to another.
For example: even with ice-storage systems, there are numerous hours when ice is neither produced nor consumed, but saved. In this mode, the chiller is the sole source of cooling. For example, to cool the building after all ice is produced but before high electrical-demand charges take effect,Tracer sets the aircooled chiller leaving-fluid set point to its most efficient setting and starts the chiller, chiller pump, and load pump.
When electrical demand is high, the ice pump is started and the chiller is either demand limited or shut down completely. Tracer controls have the intelligence to optimally balance the contribution of the ice and the chiller in meeting the cooling load.
The capacity of the chiller plant is extended by operating the chiller and ice in tandem. Tracer rations the ice, augmenting chiller capacity while reducing cooling costs. When ice is produced,Tracer will lower the aircooled chiller leaving-fluid set point and start the chiller, ice and chiller pumps, and other accessories. Any incidental loads that persists while producing ice can be addressed by starting the load pump and drawing spent cooling fluid from the ice storage tanks.
For specific information on ice storage applications, contact your localTrane sales office. This option provides oversized heat exchangers with two purposes. One, it allows the unit to be more energy efficient. Two, the unit will have enhanced operation in high-ambient conditions. Dec 11, Table 5. General data table a. Unit Size tons.
Compressor Model. Diagnostic Shutdown — Manual Reset The chiller has been shut down on a latching diagnostic that requires manual intervention to reset. Building on over 40 years of experience designing air-cooled chillers, Trane engineers brought innovation and knowledge to every Sep 13, See Note 1. Mar 28, Security Systems and Solutions. Trane US, Inc. Rzd is a next-generation, low global warming potential Cooling capacity 3.
Trane heat recovery solution is available for Trane Air. This means you can take advantage of the one component of energy pricing that has not gone up in 30 years—off-peak electricity. EarthWise Systems are good for business. Re: trane rtac oil filter replacment it is more than likely to be the oil regulating valve situated behind the oil filter which is causing oil diff trips, replace reg valve to clear fault. Re: trane rtac oil filter replacment did you check the oil return solenoid valve and strainer located under the compressor?
Originally Posted by expansion. Re: trane rtac oil filter replacment hi guys i have fixed the problem and unit is working ok. Regards, CV. Re: trane rtac oil filter replacment Hi thanks a lot for ur valuable sugestion.
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