Application Guidelines Scroll compression principle In a Danfoss SH scroll compressor, the compression is performed by two scroll elements located in the upper part of the compressor. Suction gas enters the compressor at the suction connection. As all of the gas flows around and...
• Gas intake design induces higher resistance to 161-184 (light commercial platform) and SH180- liquid slugging. 240-295-380-485 (large commercial platform). The SH485 compressors include additional The SH090-105-120-140-161-184 compressors features for enhanced protection and efficiency: benefit from a further improved design to •...
Subject to modification without prior notification. Data given for motor code 4 compressor, for full data details and capacity tables refer to Online Datasheet Generator: www.danfoss.com/odsg * SH295 replaces SH300. SH300 model remains available for after-market, please refer to datasheets for technical details.
2"1/4 - 1"5/8 sleeve. connection This connection must be used to mount an oil and gauge port equalisation line when two or more compressors are mounted in parallel (please refer to Danfoss SH Parallel Application Guide lines FRCC.EC.008. for details). Oil drain connection...
Application Guidelines Electrical data, connections and wiring Motor voltage Danfoss SH scroll compressors are available in five different motor voltages as listed below. Motor voltage code Code 3 Code 4 Code 6 Code 7 Code 9 380-400V - 3 ph...
Any compressor damage related to this installed in an enclosure, precautions must be will not be covered by Danfoss warranty. In the taken to avoid that the temperature around the same manner, cables must be selected in a way...
0.36 SH380 0.24 SH485 0.16 * 380-415V/3ph/50Hz for SH295 and SH485 LRA (Locked Rotor Amp) Locked Rotor Amp value is the higher average the starting current. However in most cases, the current as measured on mechanically blocked real starting current will be lower. A soft starter can be applied to reduce starting current.
25°C, the measured resistance must be corrected using following formula: Danfoss MCI soft-start The inrush current for the Danfoss SH scroll starting current of 3-phase AC motors; they controller compressors with motor code 4 (400V /3ph...
Application Guidelines Electrical data, connections and wiring MCI with by-pass contactor By means of the built-in auxiliary contact (23-24) the by-pass function is easily achieved, see wiring diagram beside. No heat is generated from the MCI. As the contactor always switches in no-load condition it can be selected on the basis of the thermal current (AC-1).
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Application Guidelines Electrical data, connections and wiring Compressor model SH180-240-295-380 Wiring diagram with pump-down cycle Wiring diagram without pump-down cycle Compressor model SH485 Wiring diagram without pump-down cycle Wiring diagram with pump-down cycle Legend Fuses ....................F1 Liquid Line Solenoid valve ............LLSV Compressor contactor ..............
Application Guidelines Electrical data, connections and wiring Compressor models SH090-105-120-140-161-184, the bearings. Reverse rotation will be obvious incorporate an internal reverse vent valve which to the user as soon as power is turned on: the will react when the compressor is run in reverse compressor will not build up pressure, the and will allow refrigerant to circulate through sound level will be abnormally high and power...
Approvals and certificates SH scroll compressors comply with the following Certificate are listed on: Documentation for approvals and certificates. Commercial Compressor | Danfoss CE 0062 or CE 0038 or CE 0094 All SH models (European Directive) All 60 Hz SH models...
• Refrigerant cost • Compressor capacity and efficiency • Refrigerant availability Danfoss Commercial Compressors, along with and use in coming years, in accordance with the the whole refrigeration and air conditioning international Montreal Protocol (1984). industry, shares today’s concern about the...
Application Guidelines Operating conditions POE oil Polyolester oil (POE) is miscible with HFC's POE is more hygroscopic and also holds moisture (while mineral oil is not), but has to be evaluated more tight than mineral oil. regarding lubrication ability in compressors. It also chemically reacts with water leading to POE oil has better thermal stability than acid and alcohol formation.
The discharge gas temperature must not exceed protection 135°C. Thermostat SH485 includes a PTC sensor located in the fixed scroll and wired in series with the motor Discharge line PTC thermistor chain. Excessive discharge temperature will result in electronic module Insulation output relay to trip.
Application Guidelines Operating conditions Internal pressure relief valve The SH380 and SH485 incorporate an internal relief valve set to open between the internal high and low pressure sides of the compressor when the pressure differential between the discharge and suction pressures surpasses 42.4 bar.
Application Guidelines System design recommendations General Successful application of scroll compressors beyond the limits given in this manual. Poor is dependent on careful selection of the performance, reduced reliability, or both may compressor for the application. If the compressor result. is not correct for the system, it will operate Essential piping design The working pressure in systems with R410A is...
Refrigerant charge limit Danfoss SH compressors can tolerate liquid Use the tables below to quickly evaluate the refrigerant up to a certain extent without major required compressor protection in relation with problems.
Note: for special conditions such as low ambient temperature, low refrigerant load or brazed plate heat exchangers please refer to corresponding sections. More detailed information can be found in the paragraphs hereafter. Please contact Danfoss Technical Support for any deviation from these guidelines. Off-cycle migration Off-cycle refrigerant migration is likely to occur...
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>5m/s & ambient SSH/thermal insulation Surface sump heater accessories are available temperature <-5°C from Danfoss (see section “Accessories”). Since the total system charge may be undefined, a sump heater is recommended on all stand- alone compressors and split systems. In addition,...
A continuous liquid flood back will cause oil dilution and, in extreme situations, lead to lack Danfoss SH scroll compressors can tolerate of lubrication and high rate of oil leaving the occasional liquid flood back. However, system compressor.
“Low pressure” in order to prevent this from happening. Low ambient operations The Danfoss SH scroll compressor requires a The superheat setting of the expansion device minimum pressure differential between the should be sufficient to ensure proper superheat suction and discharge pressures (please refer levels during low loading periods.
Application Guidelines Specific application recommendations Sump heaters Sump heaters are strongly recommended on will minimize refrigerant migration caused by all systems where the compressor is exposed to the large temperature gradient between the low ambient temperatures, especially split and compressor and the remainder of the system, remote condenser installations.
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135°C. be installed on the discharge line to protect Discharge line, reversing The Danfoss SH scroll compressor is a high position. At the same time, it is important that valve, solenoid valves volumetric machine and, as such, can rapidly...
Application Guidelines Specific application recommendations Suction line accumulator The use of a suction line accumulator is strongly Sustained and repeated liquid slugging and recommended in reversible-cycle applications. flood back can seriously impair the oil’s ability This because of the possibility of a substantial to lubricate the compressor bearings.
Sound power and attenuation are given at ARI conditions, measured in free space Data given for motor code 4 compressor, for full data details refer to online datasheet generator: www.danfoss.com/odsg * For SH140 code 3 and SH161 code 3 use acoustic hood reference 120Z0135 ** For SH380 code 3 use acoustic hood reference 120Z0579 ...
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Sound and vibration management Compressor sound radiation For sound radiating from the compressor, the Due to the unique Danfoss design of a full- emission path is airborne and the sound waves suction gas-cooled motor, compressor body are travelling directly from the machine in all insulation across its entire operating range directions.
Instructions for installation. These instructions http://instructions.cc.danfoss.com can also be downloaded from our website: Compressor handling and Each Danfoss SH scroll compressor is equipped When the compressor is mounted as part storage with two lift rings on the top shell. Always use of an installation, never use the lift rings on the both these rings when lifting the compressor.
Application Guidelines Installation Mounting of SH180-240-295- Compressors SH180-240-295-380-485 come between the flat washer and the steel mounting 380-485 delivered with rigid mounting spacers for parallel sleeve is established. The grommets attenuate mounting. to a great extent the transmission of compressor vibrations to the base frame.
5% silver or more with a melting Dissimilar metals When manipulating dissimilar metals such as Please contact Danfoss Technical support for any connection copper and brass or steel, the use of silver solder deviation from this guidelines.
In addition, for discharge connections equipped .Protect the terminal box and compressor with a non return valve integrated in discharge fitting (SH180 to SH485) the direction of the painted surfaces from torch heat damage (see diagram). torch has to be as described on the picture, and maximum brazing time should be less than 2 .Remove the Teflon gaskets when brazing...
50 ppm end point dryness (EPD). After burn out, remove and replace the liquid line filter drier and install a Danfoss type DAS burn- For new installations with SH compressors with out drier of the appropriate capacity. Refer to the...
(in weight) can be used to roughly define refrigerant in the oil. the required oil top-up quantity but in any case Always use original Danfoss POE oil 160SZ from the oil charge has to be adjusted based on the oil new cans.
Application Guidelines Ordering information and packaging Ordering information Danfoss SH scroll compressors can be ordered in Compressors SH180 to 485 with rigid mounting either industrial packs or in single packs. Please spacers are dedicated for parallel mounting. For use the code numbers from below tables for use in single applications the rigid spacers must ordering.
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Module 24V AC * 120H0250 120H0254 120H0262 SH380 Brazed Rigid Module 110-240V * 120H0252 120H0256 120H0264 Brazed Rigid Module 24V AC * 120H1063 SH485 Brazed Rigid Module 110-240V * 120H1065 * Electronic motor protection, module located in terminal box AB243586442172en-001401...
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Application Guidelines Accessories Surface sump heaters Type Code no. Accessory description Application Packaging Pack size 120Z0388 80W 24V surface sump heater CE and UL Multipack 120Z0389 80W 230V surface sump heater CE and UL Multipack 120Z0390 80W 400V surface sump heater CE and UL SH090-105-120-140-161-184 Multipack 120Z0391...
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Sight glass with gaskets (black and white) All models Multipack 8156129 Gasket for oil sight glass, 1"1/8 (white teflon) All models Multipack 7956005 Gasket for oil sight glass, 1"1/8 (white teflon) All models Multipack 8154001 Danfoss Commercial Compressors blue spray paint All models Single pack AB243586442172en-001401...
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Application Guidelines Updates Previous Version Current Version • Page 14: Updated Motor voltage • Page 14: Updated Wiring connections • Page 22: Updated Pressure equipment directive • Page 50: Updated spare part table for Terminal 2014/68/EU boxes, covers and T-block connectors •...
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