Related Manuals for Trane RAUS 040
Summary of Contents for Trane RAUS 040
- Page 1 Installation Operation Maintenance Condensing units Models RAUS/RAUX July 2015 CG-SVX032A-GB Original instructions...
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Page 2: Table Of Contents
Contents General Information............................3 Purpose of this Manual General Warning Receiving the unit Factory inspection Safety regulations and Certifications Warranty Installation................................8 Handling and lifting Foundations Clearances Electrical connections How to size refrigerant lines Maximum allowed distance between indoor and outdoor units Liquid receiver Refrigerant connection Unit operation..............................22... -
Page 3: General Information
Photographic evidence must be provided for macroscopic damage. The card must be sent to Trane within 8 days of receiving the goods: if it is not sent back or delayed, the complaint will not be accepted. - Page 4 A person authorised by the owner to carry out all the operations of regulation and control on the Trane unit which are specifically mentioned in this manual. He or she should keep to actions described in the manual and limit his or her action to what is explicitly allowed.
- Page 5 Precautions against risks due to the refrigerant Safety data R410a Toxicity Not important Splashes or sprinkles can cause chill burns. The risk of absorptions through the skin is not relevant. Those refrigerants could take some lightly irritating effects and in liquid stage they have a strong skinning effect.
- Page 6 • if the unit is to be moved after a year of being in the site or if it has to be dismantled contact Trane. Manual alarm reset If there is an alarm, the unit must not be manually reset before having located and eliminated the cause of the fault.
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Page 7: Warranty
C. The warranty is valid if all the installation and start-up instructions have been adhered to (both those which may have come from Trane and those coming from current practice), if the “1st start up form” has been filled in and sent to the Trane after sales department. -
Page 8: Installation
Installation Handling and lifting Units have been designed to be lifted from above by means of eyebolts and holes in the base members. Use retractor bars to keep the lifting wires or chains away from the unit. Lifting procedures provided with the unit have to be respected. CAUTION! Do not use forklift trucks to lift the unit from below. - Page 9 Use the following formula to check: % voltage unbalance = Max voltage deviation from average *100 Average voltage Important! If the mains voltage has an unbalance of above 3%, contact the company, which distributes the electrical energy. If the unit functions with a unit voltage unbalance between the phases of above 3% the guarantee is invalid.
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Page 10: How To Size Refrigerant Lines
percentage not more than 20% of the total load of the network. In any case, the harmonic distortion introduced by the unit must be determined by reference to the specific application. After a detailed analysis of the entire network of power and loads supplied. - Page 11 If different pressure drops are needed, the cooling capacity shall be corrected with the following formula: Where: Pf: cooling capacity P : cooling capacity shown into table 1 Le : equivalent length of table 1 Leff : actual equivalent length ΔT : required pressure drop ΔTtab: pressure drop shown into table 1 The equivalent length can be calculated as follows: A fictitious length for each curve or branch or concentrated drop...
- Page 12 Table 2.a: Cooling capacity of the correction factors in function of the condensing temperature. Using table 1 and the suggested correction factors it is possible to choose the proper diameter in accordance to the requested cooling capacity and the evaluated pressure drops. Once the choice is taken a check shall be made by calculating the real pressure drop using the following formula.
- Page 13 The above value represents the cooling capacity for a line with Δext=28mm, at Tas=5°C e Tc=50°C and with a corresponding pressure drop equal to 0,016 K/m.Since this capacity is lower than the cooling capacity supplied by the unit (30 kW), the pipe diameter will be undersized. The Δext=35 mm will then be chosen. In order to verify if the choice is correct, the total pressure drop must be calculated again by using the formula [2].
- Page 14 Table 4: Minimum capacity (kW) ensuring the oil flowing in vertical sections of the discharge line (R410a). In this case also, the cooling capacity shown in table 4 refers to a saturated evaporating temperature equal to -5°C: for different temperature values the capacity the capacities must be adjusted according to the following factors: Table 4.a: Correction factors for different suction temperature It might be guessed that in order to guarantee the proper speed ensuring the correct oil flow, if the compressor is working at partial loads, the diameter shall be reduced, therefore a too much high speed is obtained when the compressor...
- Page 15 On the discharge line, there is the same problem due to the oil flow on the suction line. The solution to the problem is the same. In this case, the most important issue could be the oil drop towards the compressor. This issue can be solved using check valves and making oil taps if the condenser is mounted at a higher level than the compressor.
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Page 16: Maximum Allowed Distance Between Indoor And Outdoor Units
Since this type of components may cause significant pressure drops, their use must be carefully eveluated. • Supports shall be installed to support the pipes weight and shall be spaced according to the following prescriptions: • Curves and joints cause pressure drops. Large-radius curves are strongly recommended; in case of barriers to overcome 45°... - Page 17 CHILLER...
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Page 18: Liquid Receiver
VReceiver= 0.4x( V1 – V2 ) V1: volume of the unit’s heat exchanger (please contact Trane to obtain this information) V2: Volume of the remote heat exchanger. - Page 19 Installation diagram and placing of the liquid receiver CHILLER The units are equipped with one refrigerant circuit entirely constructed with copper tubes, each with: • high pressure switches; • low pressure switches; • relief valve on high pressure line. An optional connection kit is available for the connection to the indoor evaporating units. It includes: •...
- Page 20 Different sizes of liquid receivers are available as options according to specific needs of the plant. The installation of the liquid receiver is a designer’s responsibility. In case of maintenance the liquid receiver may be used to stock the entire refrigerant volume of the plant. As mentioned in the previous paragraph, the liquid receiver location for ZHM versions shall be evaluated in accordance to the refrigerant charge delta of the two cycles.
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Page 21: Refrigerant Connection
Refrigerant connection The liquid, suction and equalization lines present rotalock connection. Rotalock welded connection are included as standard equipments but supplied separately. Service valves are available as options, supplied separately. -
Page 22: Unit Operation
Unit operation Oil compressor load Checking the oil charge All Trane units compressors are charged with oil at the factory. The scroll compressors are equipped with an oil sight glass from which you can control the level. The precise level should be between two marks that indicate the minimum and maximum allowable levels. -
Page 23: Start-Up Preliminary Procedures
Refrigerant seals control Trane units are sent with the complete charge of refrigerant and are at a sufficient pressure to check the seal after installing. If the system were not under pressure, blow refrigerants (vapors) into it until pressure is reached and look for leakage. -
Page 24: Refrigerant Charge
Refrigerant charge Charge with unit stopped and in vacuum (refrigerant charge in the liquid phase) Completely open the valve for it to close the service connection. Connect the refrigerant cylinder to the service connection without tight- ening the connection. Half close the liquid shut off valve. If the circuit has been dehydrated and vacuum, load liquid with the cylinder upside down. -
Page 26: Start Up
Start up Preliminary checks Before starting the appliance is very important verify that you have correctly performed all the operations described in the section "PREPARATION OF STARTING." Also check that all mechanical and electrical equipment are tightened properly. WARNING! particular should be paid to the fundamental components (compressor, heat exchangers, fans, electric motors, pumps…) are detected in the case fixing screws loose, proceed to their tightness before start. -
Page 27: Maintenance
Maintenance RNING General The maintenance operations are essential to maintain the efficiency of the refrigeration unit, both from a purely functional and energy consumption. Each unit is equipped with a booklet on the unit, which will be provided by the user, or the person who is authorized on his behalf to the maintenance of the unit, return all records required in order to keep a historical record of the operation of the unit. -
Page 28: Recommended Spare Parts
Recommended spare parts Following is a list of the recommended parts for several years of operation. Trane is at your disposal to recommend a personalised list of accessories according to the commissioned order, including the part number of the equipment... -
Page 29: Important Information Regarding The Refrigerant Used
Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent refrigerants into the atmosphere. Type of refrigerant: R410A GWP (1) 2088 (1) GWP = global warming potential The refrigerant charge is indicated on the name plate of the unit. Mandatory refrigerant leakage inspections apply to stationary equipment (refrigeration, air conditioning and heat pump equipment) in accordance with the EU F-gas Regulation (EU) N 517/2014. -
Page 30: Appendix
Appendix Pipes diameters table for RAUS size Suction Liquid diameter [mm] diameter [mm] RAUS 040 RAUS 060 RAUS 070 RAUS 080 RAUS 100 RAUS 110 Pipes diameters table for RAUX size Suction Liquid diameter Balancing diameter [mm] diameter [mm] [mm]... - Page 31 10,0 WZ01R048 10,7 AZ01V320 14,0 AZ01T429 16,0 AZ01T430 18,0 AZ01T432 19,0 WZ01R783 19,0 AZ01T431 22,0 WZ01Q883 35,0 WZ01Q884 22,0 WZ01Q883O 35,0 WZ031L13 24,0 WZ301J51 30,0 WZ01Q984O WZ01R441 50,0 For different liquid receivers , please contact your local Trane sales office.
- Page 32 HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2015 Trane All rights reserved...
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