Danfoss Maneurop NTZ Series Application Manuallines
Reciprocating compressors
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- Selection & application manuallines (28 pages) ,
- Application manuallines (34 pages)
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Summary of Contents for Danfoss Maneurop NTZ Series
- Page 1 Application guidelines Maneurop® reciprocating compressors NTZ R404A - R507 - 60 Hz http://danfoss.us.com/...
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Page 2: Table Of Contents
Application guidelines Content Maneurop® reciprocating compressors ....................5 Features ....................................5 Specifications ............................6 Technical specifications and nominal ratings ......................6 Versions ....................................6 Compressor reference ..............................6 Dimensions ............................7 1 cylinder ....................................7 2 cylinders ..................................... 8 4 cylinders ..................................... 9 Electrical connections and wiring .....................10 Voltage application range .............................10 Single phase electrical characteristics ........................10... - Page 3 Application guidelines Content Sound and vibration management ....................21 Sound ....................................21 Vibration ....................................21 Installation and service ........................22 System cleanliness ................................22 Compressor handling, mounting and connection ....................22 Compressor connection to the system ........................23 System pressure test ...............................23 Leak detection ...................................24 Vacuum pump-down and dehydration procedure .....................24 Start-up ....................................24 Refrigerant charging ...............................25 Oil charge and oil level ..............................25...
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Page 4: Maneurop® Reciprocating Compressors
Application guidelines Maneurop® reciprocating compressors Features The Maneurop® NTZ series from Danfoss A liquid injection system is not required. All Commercial Compressors is a range of hermetic components are of high quality and precision to reciprocating compressors for low evaporating assure a long product life. -
Page 5: Specifications
32430 4.37 (*) Motor code 4 operating conditions: R404A, Evap. temp.: -25°F, Cond. temp.: 105°F, RGT: 40°F, SC: 0°F For full NTZ data details and capacity tables refer to Online Datasheet Generator: www.danfoss.com/odsg Versions Available equipment version: • R1: Rotolock suction and discharge connections, 3/8" flare oil equalisation connection, threaded sight glass. -
Page 6: Dimensions
Application guidelines Dimensions 1 cylinder ø 8.8 Suction rotolock 1”1/4 Schrader 1/4” 13.1 10.4 Discharge rotolock 1” Oil equalisation 3/8” 3.85 2.68 2.68 0.98 3.22 PTC crankcase heater 4.29 4.65 All dimensions in inch 33° 35° Threaded oil sight glass Silent block HM8-40 2.68... -
Page 7: Cylinders
Application guidelines Dimensions 2 cylinders ø 11.3 Suction rotolock Schrader 1"3/4 1/4" 16.3 Discharge rotolock 1"1/4 9.91 10.43 Oil equalisation 3/8" 3.85 4.61 crankcase heater 2.67 1.28 3.22 Threaded oil 3.86 sight glass 6.13 2.37 (1) NTZ096 - 108 - 136 except NTZ136-1 (2) NTZ136-1 All dimensions in inch 6.73... -
Page 8: Cylinders
Application guidelines Dimensions 4 cylinders Ø 13.9 8.27 20.4 Schrader 1/4 " Suction rotolock 1"3/4 Discharge rotolock 1"1/4 4.61 Oil equalisation Threaded oil 3/8" sight glass 8.23 6.10 3.74 3.86 9.13 Mounting hole for PTC crankcase heater All dimensions in inch Silent block HM12-50 15°... -
Page 9: Electrical Connections And Wiring
Application guidelines 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 380-400 V / 3 / 50 Hz 340 –... -
Page 10: Single Phase Psc Wiring With Trickle Circuit
Application guidelines Electrical connections and wiring Single phase PSC wiring with trickle circuit Motor protector A & C Run capacitors Common Start winding (auxiliary) Run winding (main) Single phase CSR wiring with trickle circuit Motor protector A & C Run capacitors Start capacitor Common Start winding (auxiliary) -
Page 11: Three Phase Electrical Characteristics
Application guidelines Electrical connections and wiring Three phase electrical characteristics Winding resistance (Ω) Compressor (Locked Rotor Amp) A (Maximum Continuous Current) A (between phases +/- 7% at 77°F) model NTZ048 10.1 2.80 11.55 13.10 NTZ068 48.5 14.8 1.58 7.11 9.70 NTZ096 20.4 10.1... -
Page 12: Wiring Diagram Without Pump-Down Cycle
Application guidelines Electrical connections and wiring Wiring diagram without CONTROL CIRCUIT pump-down cycle 180 s Control device Optional short cycle timer (3 min) 180 s Control relay Compressor contactor Safety lock out relay H.P. switch Fused disconnect Fuses Compressor motor 85 52 019 - A Discharge gas thermostat IP rating... -
Page 13: Approval And Certifications
Declaration of conformity PED005 PED005 Low voltage directive Products NTZ 048 to 271 2006/95 EC Declaration of conformity Contact Danfoss ref. Low voltage Directive 2006/95/EC Machine directive Products NTZ 048 to 271 2006/42/EC Manufacturer's declaration of incorporation ref. Contact Danfoss... -
Page 14: Operating Conditions
Discharge line perature is to mount a discharge gas thermostat. Bracket An accessory kit is available from Danfoss which Insulation includes the thermostat, mounting bracket and insulation. The thermostat must be attached to... -
Page 15: Operating Limits
Application guidelines Operating conditions Operating limits High pressure A high-pressure (HP) safety switch is required to circuit or associated with a manual reset device to shut down the compressor should the discharge prevent cycling around the high pressure limit. pressure exceed the values shown in the table below. -
Page 16: System Design Recommendations
Evaporator 13 ft/s or more Note that the suction rotolock valves, which can be ordered from Danfoss as accessories, are U-trap, as short as possible designed for average pipe sizes, selected for systems running at nominal conditions. The pipe sizes selected for specific systems may differ from these average sizes. -
Page 17: Oil Charge And Oil Separator
Suction pressure control An MOP-type expansion valve or suction pressure When compressors are mounted onto a rack for regulator (i.e. Danfoss KVL) must be used to limit a multi-evaporator system (i.e. supermarket) or suction pressure at a maximum of 58 psig relative when evaporators operate at different tempera- (23°F). -
Page 18: Cycle Rate Limit
Application guidelines System design recommendations Cycle rate limit No more than 12 starts per hour (6 when a soft as well as proper oil return from the system to the start accessory is used) are allowed. A higher compressor. number would reduce the service life of the A 5-minute delay between two successive com- motor-compressor unit. -
Page 19: Crankcase Heater
As a general rule, Danfoss operation. This device also helps protect against Commercial Compressors recommends to size off-cycle migration by providing additional... -
Page 20: Sound And Vibration Management
Application guidelines Sound and vibration management Sound Compressors in operation are one of the sources an acoustic hood accessory. Because Maneurop® of sound and vibration in a refrigeration system. NTZ compressors are 100% suction gas cooled Both phenomena are closely related. and require no external cooling they can be in- sulated or enclosed in a sound proofing material Sound produced by a compressor is transmit-... -
Page 21: Installation And Service
Application guidelines Installation and service System cleanliness System contamination is one of the main factors during brazing to prevent oxidation. If flux is that affects equipment reliability and compressor used, take every precaution to prevent the leak- service life. Therefore it is important to take care age of flux into the piping. -
Page 22: Compressor Connection To The System
Application guidelines Installation and service Compressor connection New compressors have a protective nitrogen the pipes when mounted on the compressor. In to the system holding charge. Only remove the suction and this situation nitrogen or CO must be purged discharge plugs just before connecting the through the compressor via the schrader valve to compressor to the installation, so as to prevent prevent air and moisture ingress. -
Page 23: Leak Detection
Application guidelines Installation and service Leak detection Whenever possible the compressor must be kept these gasses can form an inflammable mixture isolated from the system during leak detection by with the compressor oil. Never use CFC or HCFC closing the suction and discharge valves. Use a refrigerants for leak detection of HFC systems. -
Page 24: Refrigerant Charging
66 ft or with many oil traps or an oil separator is recommended. Always use an oil separator, additional oil may be required. Danfoss 160Z lubricant for systems with NTZ Normally the quantity of oil added should be no compressors and R404A or R507.
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