Danfoss Maneurop NTZ048 Selection And Application Manuallines
Reciprocating compressors
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- Selection & application manuallines (28 pages) ,
- Application manuallines (24 pages) ,
- Instructions (2 pages)
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Summary of Contents for Danfoss Maneurop NTZ048
- Page 1 Selection & Application Guidelines Reciprocating Compressors R404A/R507A Low temperature refrigeration RECIPROCATING COMPRESSORS...
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Page 2: Table Of Contents
CONTENTS MANEUROP® RECIPROCATING COMPRESSORS ......................Features ....................................................Compressor reference ..........................................Code numbers ................................................. Packaging ................................................... SPECIFICATIONS ................................................. Technical specifi cations and nominal ratings ........................Approvals and certifi cates ....................................... Operating envelope ............................................. OUTLINE DRAWINGS ............................................1 cylinder ..................................................... 2 cylinders .................................................. -
Page 3: Maneurop® Reciprocating Compressors
MANEUROP® RECIPROCATING COMPRESSORS Features The Maneurop® NTZ series from A liquid injection system is not re- Danfoss Commercial Compressors quired. All components are of high is a range of hermetic reciprocating quality and precision to assure a long compressors for low evaporating tem- product life. -
Page 4: Code Numbers
At the publication date of this do- sors are according to the standard cument NTZ compressors are only (for ordering Danfoss numbering system. Below available with motor voltage code 4. tables list the code numbers for NTZ For other motor voltage codes, please compressors in single packs and check the availability. -
Page 5: Specifications
8058 1.21 (*) Operating conditions: R404A, Evap. temp.: -35°C, Cond. temp.: 40°C, RGT: 20°C, SC: 0K For full NTZ data details and capa- Generator: www.danfoss.com/odsg city tables refer to Online Datasheet Versions Available equipment version: connections, 3/8" flare oil equalisation... -
Page 6: Outline Drawings
OUTLINE DRAWINGS 1 cylinder ø 224 Suction rotolock 1"1/4 Schrader 1/4" Discharge rotolock Oil equalisation 1" 3/8" PTC crankcase heater Threaded oil sight glass Silent block HM8-40 Suction 147 Discharge 142 Rotolock connections size Pipe sizing Rotolock valve Suction Discharge Suction Discharge Suction... -
Page 7: Cylinders
OUTLINE DRAWINGS 2 cylinders ø 288 Suction rotolock Schrader 1"3/4 1/4" Discharge rotolock 1"1/4 Oil equalisation 3/8" crankcase heater Threaded oil sight glass 8° Suction 179 Silent block 38° Discharge 176 HM8-40 8° Rotolock connections size Pipe sizing Rotolock valve Suction Discharge Suction... -
Page 8: Cylinders
OUTLINE DRAWINGS 4 cylinders ø 352 Suction rotolock 1"3/4 Discharge rotolock 1"1/4 Oil equalisation 3/8" (VE version only) Schrader 1/4" Threaded oil sight glass H M12-50 Mounting hole for PTC crankcase heater Silent block HM12-50 15° 15° Rotolock connections size Pipe sizing Rotolock valve Suction... -
Page 9: Electrical Connections And Wiring
ELECTRICAL CONNECTIONS AND WIRING Voltage application range Motor voltage code Nominal voltage Voltage application range 208-230 V / 1 / 60 Hz 187 – 253 V 200-230 V / 3 / 60 Hz 180 – 253 V 400 V / 3 / 50 Hz 360 –... -
Page 10: Three Phase Motor Protection And Suggested Wiring Diagram
ELECTRICAL CONNECTIONS AND WIRING Three phase motor Three phase compressors are inter- current overload and locked rotor nally protected by a temperature / conditions. If the motor were to be protection and current-sensing bimetallic protector, overloaded and the protector trips, all suggested wiring connected to the neutral point of 3-phases are cut out. -
Page 11: Refrigerants And Lubricants
R404A and R507A are espe- thermodynamic properties than cially suitable for low and medium R404A and R507A. Especially their temperature applications. Danfoss larger temperature glide shall not be recommends the use of these refrige- neglected. Using these refrigerants the rants with NTZ compressors. -
Page 12: System Design Recommendations
For guidelines on manifolding ternating power supply. Danfoss does Maneurop® NTZ compressors, please not warrant the compressors for use refer to literature called "Parallel Appli- on mobile applications such as trucks, cation Guidelines". - Page 13 For servicing of existing installations refrigerating capacity and the system where acid formation is present the refrigerant charge. Danfoss DCL solid core filter driers Suction pressure control An MOP-type expansion valve or suc- When compressors are mounted onto tion pressure regulator (i.e. Danfoss...
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Page 14: Operating Limits
SYSTEM DESIGN RECOMMENDATIONS Operating limits High pressure A high-pressure (HP) safety switch is ted with a manual reset device to pre- required to shut down the compressor vent cycling around the high pressure should the discharge pressure exceed limit. the values shown in the table below. If a discharge valve is used, the HP This switch can be set at lower values switch must be connected to the ser-... -
Page 15: Motor Protection
An accessory kit is value of 135°C when the compressor available from Danfoss which inclu- RECIPROCATING COMPRESSORS... -
Page 16: Liquid Refrigerant Control And Charge Limits
SYSTEM DESIGN RECOMMENDATIONS des the thermostat, mounting bracket indicated below at no more than and insulation. The thermostat must 150 mm from the discharge connec- be attached to the discharge line as tion. Thermostat Discharge line Insulation Bracket Liquid refrigerant control Refrigeration compressors are basi- Liquid refrigerant will dilute the oil, cally designed as gas compressors. - Page 17 floodback both at start-up and during lator manufacturer recommendations. operation or after the defrost opera- As a general rule, Danfoss Commercial tion. This device also helps protect Compressors recommends to size the against off-cycle migration by means...
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Page 18: Sound And Vibration Management
SOUND AND VIBRATION MANAGEMENT Sound Compressors in operation are one of a refrigeration system. Both pheno- the sources of sound and vibration in mena are closely related. Sound produced by a compressor is quire no external cooling they can be transmitted in every direction by the insulated or enclosed in a sound proo- ambient air, the mounting feet, the... -
Page 19: Installation And Service
INSTALLATION AND SERVICE System cleanliness System contamination is one of the parts before brazing and always purge main factors that affects equipment nitrogen or CO through the pipes reliability and compressor service life. during brazing to prevent oxidation. Therefore it is important to take care If flux is used, take every precaution of the system cleanliness when assem- to prevent leakage into the piping. -
Page 20: System Pressure Test
INSTALLATION AND SERVICE Compressor connection New compressors have a protective or valves may be brazed to the pipes to the system nitrogen holding charge. Only remove when mounted on the compressor. In the suction and discharge plugs just this situation nitrogen or CO must be before connecting the compressor to purged through the compressor via... -
Page 21: Leak Detection
INSTALLATION AND SERVICE Leak detection Whenever possible the compressor gen, dry air or acetylene as these gas- must be kept isolated from the sys- ses can form an inflammable mixture tem during leak detection by closing with the compressor oil. Never use CFC the suction and discharge valves Use or HCFC refrigerants for leak detection a mixture of nitrogen and the final re-... - Page 22 Normally denser installations an oil separator is the quantity of oil added should be no recommended. Always use Danfoss more than 2% of the total refrigerant 160Z lubricant for systems with NTZ charge. This percentage does not take compressors and R404A or R507A.
- Page 24 Danfoss Commercial Compressors http://cc.danfoss.com Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material.Danfoss reserves the right to alter its products without notice.This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.
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