Selection & Application guidelines. Condensing Units 50 Hz - 1, 2, 4 cylinders R22 - R134a - R404A / R507 REFRIGERATION AND AIR CONDITIONING
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1 Selection & Application guidelines Condensing Units 50 Hz - 1, 2, 4 cylinders R22 - R134a - R404A / R507 REFRIGERATION AND AIR CONDITIONING
2 50 HZ BLUESTAR PRODUCT PROGRAMME p 3 Product range p 3 Standard product description p 3 Model designation p 4 Bluestar philosophy p 4 Product configuration p 4 Approval indication p 4 Voltage code tables p 5 GENERAL SPECIFICATIONS p 6 PERFORMANCE DATA p 8 OVERALL DIMENSIONS p 15 ELECTRICAL DATA p 16 Electrical characteristics p 16 Electrical connections p 17 Capacitors table for single phase version p 17 INSTALLATION AND SERVICE p 18 Unit site location and weatherproof housing... p 18 Refrigerating connections p 19 System cleanliness p 19 Lubricant p 20 OPERATING LIMITS AND SAFETIES p 21 Refrigerant charge limits p 21 Safety pressure switch setting p 22 Cycle rate limit p 23 Sound level p Hz catalogue 2
3 50 Hz Bluestar product programme PRODUCT RANGE R404A R507 HFC REFRIGERANTS R404A R507 R134a R134a MGZ R404A R507 R134a HGZ medium temperature application +10 C 0 C -10 C -20 C HCFC REFRIGERANT R22 HGM R22 ambient temperature up to 46 C MGM R22 ambient temperature up to 38 C ambient temperature up to 38 C LGZ R404A R507 ambient temperature up to 43 C ambient temperature up to 46 C low temperature application -30 C -20 C -30 C -40 C MULTI-APPLICATION MULTI-REFRIGERANT MGM HGM MG Z HGZ LGZ ) ) ) 50Hz Mineral oil 160 P Ester oil 160 PZ Ester oil 160 Z M Medium temperature application H Medium temperature application high ambient L Low temperature application STANDARD PRODUCT DESCRIPTION The multi-purpose series of Bluestar condensing units include as standard: - Hermetic compressors for R22 or R134a / R404A / R507 refrigerants, fitted with screw type sight glass, suction and discharge valves, builtin protections: pressure, temperature, current. - Crankcase heater (auto regulated PTC, 35 W), or trickle circuit for small size single phase compressors in R22 version. - Compressor oil charge, 160P for R22 version and 160PZ (MGZ- HGZ), 160Z (LGZ) for HFC version. - High efficiency condensers (2 fans, rifled tubes and louvre fins) bar maxi operating pressure liquid receiver (except 3,1 litre receivers R22 models M.O.P. 25 bar) with welded shut-off valve. - Factory fitted suction and liquid stubs for brazed connections. - Prewired electrical boxes. - Danfoss HP/LP safety switch. - Reinforced base frame. - All components epoxy powder coated. - Dry holding charge. 100 % tested 3 50 Hz catalogue
4 MODEL DESIGNATION (10 DIGITS) 50 Hz Bluestar product programme Application M: Medium temperature H: Medium temp. high ambient L: Low temperature M G Z 125 S 00 E Design G: reciprocating compressor, twin fan condenser Refrigerant / lubricant M: R22 / mineral oil Z: R134a-R404A-R507 / ester oil Compressor & fan motor voltage code Refer to the voltage code tables (page 5) Product configuration Refer to the option code numbers table below Approval indication Refer to products data sheet Unit size: 016 to 160 BLUESTAR PHILOSOPHY Danfoss Commercial Compressors condensing units have evolved over the years to meet present and future requirements of performance, sound level, compactness, construction quality, and conformity with ecological standards. Today, a successful conception and production means compliance with not only the specifics of the application but also the regional market regulation and standards. PRODUCT CONFIGURATION This information is given by a 2 digit option code number which defines the construction variations applied to standard models. Option code numbers table For these reasons, Danfoss Commercial Compressors has made possible a global product development in an effort to harmonise the various regional standards, thus offering design synergies through a wide programme of condensing units. The G ranges of Bluestar include a Maneurop compressor and a multifan condenser. These units could be used for both low (L) and The main construction variations applicable on standard products are listed below. Other options may be developed according to your medium (M normal ambient, H high ambient) temperature applications. Based on this product design, two imperative criteria must be considered: The product configuration The approval indication By referring to these codes and letter it becomes easy to establish if the product complies to both technical and regulation requirements. requirement, please contact your Danfoss Commercial Compressors Sales Organisation. Option Standard Safety Comp. Base frame Product configuration Receiver electrical pressure suct./disch. Compressor Code wiring switch valves Condenser 00 universal design Yes Yes Yes Yes 01 without electrical box, without HP/LP safety switch Yes No No Yes 02 without receiver No Yes Yes Yes 03 without elec. box, without HP/LP switch, without receiver No No No Yes 04 without HP/LP safety switch Yes Yes No Yes 05 without receiver, without HP/LP safety switch No Yes No Yes 06 without elec. box, pressure switch, receiver or valves No No No No Refer to the STANDARD PRODUCT DESCRIPTION APPROVAL INDICATION This information is given by a letter which informs about the condensing unit components conformity to the main or specific regulations inside a region. To determine the precise product description of special models and the corresponding approvals, please refer to the Bluestar Data Sheets. 50 Hz catalogue 4
5 50 Hz Bluestar product programme VOLTAGE CODE TABLES Voltage MGM / MGZ Description Code Comp. 400 V - 3 Ph. Fan 400 V - 3 Ph. Comp. 400 V - 3 Ph. Fan 230 V - 1 Ph. Comp. 400 V - 3 Ph. Fan 400 V - 1 Ph. Comp. 230 V - 1 Ph. Fan 230 V - 1 Ph. Comp. 230 V - 3 Ph. Fan 230 V - 1 Ph. D E F G H Voltage HGM / HGZ Description Code Comp. 400 V - 3 Ph. Fan 400 V - 3 Ph. Comp. 400 V - 3 Ph. Fan 230 V - 1 Ph. Comp. 400 V - 3 Ph. Fan 400 V - 1 Ph. Comp. 230 V - 1 Ph. Fan 230 V - 1 Ph. Comp. 230 V - 3 Ph. Fan 230 V - 1 Ph. D E F G H Voltage LGZ Description Code Comp. 400 V - 3 Ph. Fan 400 V - 3 Ph. Comp. 400 V - 3 Ph. Fan 230 V - 1 Ph. Comp. 400 V - 3 Ph. Fan 400 V - 1 Ph. Comp. 230 V - 1 Ph. Fan 230 V - 1 Ph. Comp. 230 V - 3 Ph. Fan 230 V - 1 Ph. D E F G H 5 50 Hz catalogue
6 General specifications Model Compressor Condenser Weight Type Swept Oil Air Coil Fan (kg) volume charge Flow Type Intern. vol. Number Fan blade (m3/h) (dm3) (m3/h) (dm3) (Nb) (mm) MGM / MGZ MT / MTZ 18 5,26 0, A3 0, MGM / MGZ MT / MTZ 18 5,26 0, B3 1, MGM MT 22 6,58 0, B3 1, MGZ MTZ 22 6,58 0, C3 1, MGM / MGZ MT / MTZ 28 8,29 0, C3 1, MGM / MGZ MT / MTZ 32 9,3 0, D3 1, MGM MT 36 10,6 0, D3 1, MGZ MTZ 36 10,6 0, E3 2, MGM / MGZ MT / MTZ , E3 2, MGM / MGZ MT / MTZ 50 14,8 1, G3 2, MGM / MGZ MT / MTZ 64 18,6 1, H3 4, MGM / MGZ MT / MTZ 80 23,7 1, J3 4, MGM / MGZ MT / MTZ ,8 3, L3 5, MGM / MGZ MT / MTZ ,6 3, M3 6, MGM / MGZ MT / MTZ , M3 6, MGM / MGZ MT / MTZ ,25 3, N3 8, HGM / HGZ MT / MTZ 18 5,26 0, C3 1, HGM / HGZ MT / MTZ 22 6,58 0, D3 1, HGM / HGZ MT /MTZ 28 8,29 0, E3 2, HGM / HGZ MT / MTZ 32 9,3 0, F3 2, HGM MT 36 10,6 0, F3 2, HGZ MTZ 36 10,6 0, H3 4, HGM / HGZ MT / MTZ , H3 4, HGM / HGZ MT / MTZ 50 14,8 1, J3 4, HGM / HGZ MT / MTZ 64 18,6 1, K3 3, HGM / HGZ MT / MTZ 80 23,7 1, L3 5, HGM / HGZ MT / MTZ ,8 3, N3 8, HGM / HGZ MT / MTZ ,6 3, P3 9, HGM / HGZ MT / MTZ , P3 9, HGM / HGZ MT / MTZ ,25 3, Q LGZ LTZ 22 8,3 0, C3 1, LGZ LTZ , D3 1, LGZ LTZ 40 16,7 1, F3 2, LGZ LTZ 44 18,6 1, G3 2, LGZ LTZ 50 23,7 1, H3 4, LGZ LTZ 88 37,6 3, K3 3, LGZ LTZ ,25 3, K3 3, Hz catalogue 6
7 General specifications Liquid receiver Connections Internal Height External Condenser Lines volume Diameter Inlet Outlet Suction Discharge Liquid (dm3) (mm) (mm) ( / mm) ( / mm) ( / mm) ( / mm) ( / mm) Model 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 MGM / MGZ 016 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 MGM / MGZ 018 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 MGM 022 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 MGZ 022 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 MGM / MGZ /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 MGM / MGZ /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 MGM /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 MGZ /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 MGM / MGZ 040 7, /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 MGM / MGZ /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 MGM / MGZ /8 / 16 1/2 / /8 / 28 5/8 / 16 1/2 / 12 MGM / MGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 1/2 / 12 MGM / MGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 5/8 / 16 MGM / MGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 5/8 / 16 MGM / MGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 5/8 / 16 MGM / MGZ 160 3, /8 / 10 3/8 / 10 1/2 / 12 3/8 / 10 3/8 / 10 HGM / HGZ /2 / 12 1/2 / 12 1/2 / 12 1/2 / 12 1/2 / 12 HGM / HGZ /2 / 12 1/2 / 12 1/2 / 12 1/2 / 12 1/2 / 12 HGM / HGZ /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 HGM / HGZ /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 HGM 036 7, /8 / 16 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 HGZ 036 7, /8 / 16 1/2 / 12 5/8 / 16 1/2 / 12 1/2 / 12 HGM / HGZ 040 7, /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 HGM / HGZ /4 / 19 5/8 / 16 7/8 / 22 3/4 / 19 1/2 / 12 HGM / HGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 1/2 / 12 HGM / HGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 5/8 / 16 HGM / HGZ /4 / 19 5/8 / /8 / 28 7/8 / 22 5/8 / 16 HGM / HGZ /4 / 19 5/8 / /8 / 28 7/8 / 22 5/8 / 16 HGM / HGZ /4 / 19 5/8 / /8 / 28 7/8 / 22 5/8 / 16 HGM / HGZ 160 3, /8 / 10 3/8 / 10 5/8 / 16 3/8 / 10 3/8 / 10 LGZ 022 3, /2 / 12 1/2 / 12 5/8 / 16 1/2 / 12 3/8 / 10 LGZ /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 LGZ 040 7, /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 LGZ 044 7, /8 / 16 1/2 / 12 7/8 / 22 5/8 / 16 1/2 / 12 LGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 1/2 / 12 LGZ /4 / 19 5/8 / /8 / 28 3/4 / 19 1/2 / 12 LGZ Hz catalogue
8 MGM Performance data 50 Hz R22 Model TE + 5 C 0 C - 5 C - 10 C - 15 C - 20 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , , ,7 MGM , , , , , , , , , , , , , , , , ,7 MGM , , , , , , , , , , , , , , , , , ,9 MGM , , , , , , , , , , , , , , , , , ,4 MGM , , , , , , , , , , , , , , , , ,6 MGM , , , , , , , , , , , , , , , , ,8 MGM , , , , , , , , , , , , , , , , ,9 MGM , , , , , , , , , , , , , , , , ,1 MGM , , , , , , , , , , , , , , , , , ,7 MGM , , , , , , , , , , , , , , , , , ,5 MGM , , , , , , , , , , , , , , , , , ,5 MGM , , , , , , , , , , , , , , , , , ,7 MGM , , , , , , , , , , , , , , , , , ,5 MGM , , , , , , , , , , , , , , , , , ,3 MGM , , , , , , , , , , , ,9 LEGEND P.F. cooling capacity (W) P.A. power input (kw) TE TA evaporating temperature ( C) ambient temperature ( C) PERFORMANCE DATA IS BASED ON 50 Hz Superheat 18 K Subcooling 3 K. 50 Hz catalogue 8
9 Performance data 50 Hz HGM R22 Model HGM 018 HGM 022 HGM 028 HGM 032 HGM 036 HGM 040 HGM 050 HGM 064 HGM 080 HGM 100 HGM 125 HGM 144 HGM 160 TE + 10 C + 5 C 0 C - 5 C - 10 C - 15 C - 20 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Hz catalogue
10 Performance data 50 Hz MGZ R404A / R507 Model TE 0 C - 5 C - 10 C - 15 C - 20 C - 25 C - 30 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , ,8 - - MGZ , , , , , , , , , , , , , , ,8 - - MGZ , , , , , , , , , , , , , , , , ,0 - - MGZ , , , , , , , , , , , , , , , , , ,1 MGZ , , , , , , , , , , , , , , , , ,3 MGZ , , , , , , , , , , , , , , , , , , , ,6 MGZ , , , , , , , , , , , , , , , , , , , ,7 MGZ , , , , , , , , , , , , , , , , , , , ,2 MGZ , , , , , , , , , , , , , , , , , , , ,7 MGZ , , , , , , , , , , , , , , , , , , , ,5 MGZ , , , , , , , , , , , , , , , , , , , ,1 MGZ , , , , , , , , , , , , , , , , , , , ,1 MGZ , , , , , , , , , , , , , , , , , , , ,1 MGZ , , , , , , , , , , , , , , , , , , , ,8 MGZ , , , , , , , , , ,2 - - LEGEND P.F. cooling capacity (W) P.A. power input (kw) TE TA evaporating temperature ( C) ambient temperature ( C) PERFORMANCE DATA IS BASED ON 50 Hz Superheat 18 K Subcooling 3 K. 50 Hz catalogue 10
11 Performance data 50 Hz HGZ R404A / R507 Model HGZ 018 HGZ 022 HGZ 028 HGZ 032 HGZ 036 HGZ 040 HGZ 050 HGZ 064 HGZ 080 HGZ 100 HGZ 125 HGZ 144 HGZ 160 TE + 10 C + 5 C 0 C - 5 C - 10 C - 15 C - 20 C - 25 C - 30 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Hz catalogue
12 Performance data 50 Hz MGZ R134a Model TE + 10 C + 5 C 0 C - 5 C - 10 C - 15 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , ,6 MGZ , , , , , , , , , , , , , , , ,6 MGZ , , , , , , , , , , , , , , , , , ,7 MGZ , , , , , , , , , , , , , , , , , ,8 MGZ , , , , , , , , , , , , , , , , , ,0 MGZ , , , , , , , , , , , , , , , , , ,2 MGZ , , , , , , , , , , , , , , , , , ,3 MGZ , , , , , , , , , , , , , , , , , ,7 MGZ , , , , , , , , , , , , , , , , , ,0 MGZ , , , , , , , , , , , , , , , , , ,6 MGZ , , , , , , , , , , , , , , , , , ,0 MGZ , , , , , , , , , , , , , , , , , ,5 MGZ , , , , , , , , , , , , , , , , , ,5 MGZ , , , , , , , , , , , , , , , , , ,9 MGZ , , , , , , , , , , , ,3 LEGEND P.F. cooling capacity (W) P.A. power input (kw) TE TA evaporating temperature ( C) ambient temperature ( C) PERFORMANCE DATA IS BASED ON 50 Hz Superheat 18 K Subcooling 3 K. 50 Hz catalogue 12
13 Performance data 50 Hz HGZ R134a Model HGZ 018 HGZ 022 HGZ 028 HGZ 032 HGZ 036 HGZ 040 HGZ 050 HGZ 064 HGZ 080 HGZ 100 HGZ 125 HGZ 144 HGZ 160 TE + 20 C + 15 C + 10 C + 5 C 0 C - 5 C - 10 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Hz catalogue
14 Performance data 50 Hz LGZ Model LGZ 022 LGZ 028 LGZ 040 LGZ 044 LGZ 050 LGZ 088 LGZ 100 R404A / R507 TE - 20 C - 25 C - 30 C - 35 C - 40 C TA P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A. P.F. P.A , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,8 - - LEGEND P.F. cooling capacity (W) P.A. power input (kw) TE TA evaporating temperature ( C) ambient temperature ( C) PERFORMANCE DATA IS BASED ON 50 Hz Superheat 18 K Subcooling 3 K. LGZ condensing units, designed for low temperature application, are fitted with LTZ hermetic compressors. The LTZ low temperature compressors have been designed and optimised for a reliable and efficient running operation within the evaporating temperature range -20 C to -40 C. Warnings: 1. The use of an expansion valve with maximum operating pressure (MOP) set at -20 C or a starting regulator is compulsory. 2. Use only R404A / R507 specified components (i.e.: filter drier,txv, ). 3. The factory-fitted crankcase heater must be permanently energized (self regulating PTC). 50 Hz catalogue 14
15 Overall dimensions d c f H e Fixation Mounting Ø 9 mm 20 a W D b 25 Model Overall dimensions Base mounting Condenser W (mm) D (mm) H (mm) a (mm) b (mm) c (mm) d (mm) e (mm) f (mm) * MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ MGM / MGZ / 150 ** MGM / MGZ / 150 ** MGM / MGZ / 150 ** MGM / MGZ / 150 ** HGM / HGZ HGM / HGZ HGM / HGZ HGM / HGZ HGM HGZ HGM / HGZ HGM / HGZ HGM / HGZ / 150 ** HGM / HGZ / 150 ** HGM / HGZ / 150 ** HGM / HGZ HGM / HGZ HGM / HGZ LGZ LGZ LGZ LGZ LGZ LGZ / 150 ** LGZ / 150 ** Note: * value without cable gland, may slightly vary depending on fan manufacturer ** single/three phase fan motor Hz catalogue
16 ELECTRICAL CHARACTERISTICS Electrical data 50 HZ Compressor Fan * Model Locked rotor current (A) Max. continuous current MCC (A) Max. current (A) Power input (W) 380V/3 230V/1 230V/3 380V/3 230V/1 230V/3 380V/3 230V/1 400V/1 380V/3 230V/1 400V/1 MGM / MGZ x 0,32 2 x 0,2-2 x 70 2 x 70 MGM / MGZ x 0,32 2 x 0,2-2 x 70 2 x 70 MGM / MGZ x 0,32 2 x 0,2-2 x 70 2 x 70 MGM / MGZ , x 0,32 2 x 0,2-2 x 70 2 x 70 MGM / MGZ x 0,35 2 x 0,85-2 x x MGM / MGZ x 0,35 2 x 0,85-2 x x MGM x 0,35 2 x 0,85-2 x x MGZ x 0,35 2 x 0,85-2 x x MGM / MGZ x 0,5 2 x 1,2-2 x x MGM / MGZ x 0,5 2 x 1,2-2 x x MGM / MGZ x 0,7 2 x 1,3-2 x x MGM / MGZ , x 1,2 2 x 1,7-2 x x MGM / MGZ x 1,2 2 x 1,7-2 x x MGM / MGZ x 1,2 2 x 1,7-2 x x MGM / MGZ x 1,2 2 x 1,7-2 x x HGM / HGZ x 0,32 2 x 0,2-2 x 70 2 x 70 HGM / HGZ x 0,35 2 x 0,85-2 x x HGM / HGZ , x 0,35 2 x 0,85-2 x x HGM / HGZ x 0,35 2 x 0,85-2 x x HGM x 0,35 2 x 0,85-2 x x HGZ x 0,5 2 x 1,2-2 x x HGM x 0,5 2 x 1,2-2 x x HGZ x 0,5 2 x 1,2-2 x x HGM / HGZ x 0,7 2 x 1,3-2 x x HGM / HGZ x 1,2 2 x 1,7-2 x x HGM / HGZ x 1,2 2 x 1,7-2 x x HGM / HGZ , x 1,2 2 x 1,7-2 x x HGM / HGZ x 1,45 2 x 3,2-2 x x HGM / HGZ x 1,45 2 x 3,2-2 x x HGM / HGZ x 1,45 2 x 3,2-2 x x LGZ x 0,32 2 x 0,2-2 x 70 2 x 70 LGZ , x 0,35 2 x 0,85-2 x x LGZ , x 0,35 2 x 0,85-2 x x LGZ x 0,5 2 x 1,2-2 x x LGZ x 0,5 2 x 1,2-2 x x LGZ , x 1,2 2 x 1,7-2 x x LGZ x 1,2 2 x 1,7-2 x x Note: * fan electrical data may slightly vary depending on motor manufacturer. MCC is the maximum current at which the compressor internal protector cuts out. Under normal conditions the condensing unit operating current will be lower. All power wiring must comply with applicable local and national codes. Install field supply fused disconnect (time delay or time lag fuses) specific for motors. Do not undersize contactors which could result in a motor burn-out. For quick contactor selection refer to the Danfoss brochures Contactors for Danfoss Commercial Compressors and condensing units and Definite Purpose Contactors. 50 Hz catalogue 16
17 Electrical data 50 Hz ELECTRICAL CONNECTIONS Q1 C 15 K KM1* A R KM1 C KM2 COMP. FAN KM3 W V U B W N M B N M B N M B N B RD ARR3J4A4 S 220 K D D FAN KM2 KM3 KA TH Q LP P B A P HP D C KM1 PRESS F1 F1 PTC L N CONTROL CIRCUIT KM1 KM2 KM3 FAN FAN KM2 KM3 W V U M B N M B N M B N M B COMP LP P B P D A HP C KA TH KM N PRESS Q F1 F1 F1 PTC CONTROL CIRCUIT Q1 L1 L2 L3 Typical single phase wiring diagram (G), without Pump Down cycle Typical three phase wiring diagram (D), without Pump Down cycle Legend 1. CONDENSING UNIT COMPONENTS Comp: compressor Fan: condenser fan motor Press: HP/LP switch PTC: crankcase heater (ref ) 2. UNIT TERMINAL BOX RD: compressor starting relay (ref ) A, B, C: compressor capacitors (refer to table below) D: fan capacitors 1-11, U-V-W: electrical terminals N: black wire B: blue wire M: brown wire W: white wire 3. FIELD WIRING TH: control (thermostat) KA: external control, safety devices, KM1: compressor contactor KM1*: Position for trickle heat circuit KM2-KM3 : fan contactor Q1: fused disconnect F1: fuses For further electrical diagram details, please contact Danfoss Commercial Compressors Sales Organisation. A wiring diagram is included in the electrical box of each condensing unit. Danfoss Commercial Compressors terminal boxes are equipped with screw type connector blocks, for both power connectors and controls. CAPACITORS TABLE FOR SINGLE PHASE VERSION Condensing unit model Capacitors Compressor Run A Run C Start B MGM / MGZ Typ (µf) HGM / HGZ 018, LGZ 022 Ref.: HGM / HGZ Typ (µf) LGZ 028 Ref.: MGM / MGZ , Typ (µf) HGM , HGZ 032 Ref.: In place of capacitor A, a single run capacitor might be used and would have a capacity equal to A+C values. For fan motor capacitor value (D), refer to the wiring diagram inside the unit electrical box Hz catalogue
18 Installation and service UNIT SITE LOCATION AND WEATHERPROOF HOUSING The condensing unit must be located in a well ventilated area, air flow through the unit shall not be restricted in any way. It is important to check there is no condenser air flow recirculation and that ambient air temperature will always be in conformity with condensing unit selection. Be sure the unit is protected from prevailing winds. Check for proper fan rotation: air towards the compressor. To optimize the unit running conditions, the condenser coil must be cleaned at regular intervals. Recommended unit site installation. 1 x coil height Min. clearance: 2 x unit length H No contractual drawing W D Weatherproof housing For outdoor installation, provide a shelter or use the Bluestar weatherproof housing. Danfoss can deliver the following housings. When the condensing unit is installed in a factory assembled refrigeration machine check that the machine casing does not restrict the condenser air flow. Condensing unit model Dimensions W D H Size MGM / MGZ HGM / HGZ 018 LGZ G MGM / MGZ HGM / HGZ , HGM 036 LGZ G MGM / MGZ HGM / HGZ , HGZ 036 LGZ G MGM / MGZ HGM / HGZ LGZ G - HGM / HGZ G 50 Hz catalogue 18
19 Installation and service REFRIGERATING CONNECTIONS Only use clean, dehydrated copper refrigeration tubing. The compressor pipework has to be flexible (pipe run in 3 directions or in a circular mode, or equipped with vibration absorbers). It is important not to fasten the pipework too close to the compressor. The refrigerating pipework must be as simple and as short as possible, avoid low points on pipework where oil could accumulate. On suction line, horizontal sections shall be slopped downward towards the compressor. The suction gas velocity must be sufficient to ensure a good oil return, within 8 to 12 m/s in vertical risers. In horizontal pipes this velocity can decrease down to 4 m/s. The use of U-trap and double suction risers is often required. These suction risers must always be fitted with a U-trap at the bottom and a P-trap at the top and never be higher than 4 m unless a second U-trap system is fitted. To condenser Compressor Evaporators As small as possible When the evaporator is installed above the compressor, suction line design shall prevent liquid refrigerant flood back to the compressor during off cycle. The suction line must always be insulated to avoid condensation and abnormal superheat. Depending on the application the following values should be considered : - evaporator superheat between 5 and 12K, - suction gas superheat at compressor inlet 30 K maximum. A too high superheat causes a rapid increase of the compressor discharge gas temperature which must never exceed 130 C. For specific applications (multi evaporator system, long pipe runs, ) the use of an oil separator connected to the discharge side of the compressor is recommended. One of the main factors affecting equipment reliability and compressor service life is the refrigeration circuit contamination. During installation, circuit contamination can be caused by: - Brazing and welding oxides, - Filings and particles from de-burring pipe-work, - Brazing flux, - Moisture and air. Consequently, the following precautions must be taken: SYSTEM CLEANLINESS Pipework Only use clean, dehydrated copper refrigeration tubing. Avoid flare type connections and take great care when brazing. Use only silver alloy rods. Run in the braze without over-filling to insure it does not leak into the tube. All brazing should be executed in an inert gas atmosphere (nitrogen or CO2) to prevent oxidation. If flux is used, take every precaution to prevent leakage into the pipe-work. Leak detection Perform a leak detection of the system (except condensing unit) under nitrogen mixed with the refrigerant to be used in the system. Maintain the liquid and suction shut off valves in closed position (unit leak tested in factory). Do not use CFC for leak testing condensing unit which will be used with HFC refrigerants. The use of leak detecting fluids is not recommended as they may interact with the lubricant s own additives Hz catalogue
20 Installation and service SYSTEM CLEANLINESS System pressure test When running a pressure test, use an inert, dry gas as above. The pressure differential between high and low side shall not exceed 24 bar differential (350 psig). Maximum test pressures are : - Low pressure side 25 bar (370 psig) - High pressure side 33 bar (480 psig) (except unit fitted with 3 litres receiver for R22 operation) Pull down under vacuum - moisture removal Moisture prevents proper functioning of the compressor and the refrigeration system. Air and moisture reduce service life and increase condensing pressure, which causes abnormally high discharge temperatures likely to destroy the oil s lubricating properties. The risk of acid formation is also increased by air and moisture, and copper plating can be generated in this way. All these phenomena, can cause mechanical and electrical compressor failures. The usual method of avoiding these problems is vacuum pull-down executed with a vacuum pump creating a minimum vacuum of 250 microns (0,33 mbar). Do not open the unit shut-off valves before the refrigeration circuit is fully dehydrated. LUBRICANT Three types of lubricants are used : - mineral oil 160P for MGM and HGM - ester oil 160PZ for MGZ and HGZ - ester oil 160Z for LGZ Model Oil type 1 litre can ref. 2 litre can ref. 5 litre can ref. MGM - HGM Mineral 160 P MGZ - HGZ Ester 160 PZ LGZ Ester 160 Z The condensing unit compressor is supplied with an initial oil charge (refer to part 3 of this document). On delivery the oil level can be checked through compressor sight glass. Although this initial oil charge is sufficient for standard applications, it is important to check the oil level during the start-up period. During this starting procedure no oil addition is required except when oil level is no longer visible in the sight glass. When the compressor is running smoothly at stabilised conditions the oil level must be between 1/2 and 3/4 of the oil sight glass. Liquid refrigerant in the compressor sump at start-up may give wrong oil level indication. 50 Hz catalogue 20
21 Operating limits and safeties REFRIGERANT CHARGE LIMITS The refrigerant charge limit for Maneurop reciprocating compressors is 2,5 kg per cylinder. According to the size of compressors fitted on condensing units, the following table shall be used to Condensing unit model evaluate if additional precautions are required : Refrigerant Compressor charge limit (kg) MGM / MGZ HGM / HGZ LGZ cyl. 2,5 MGM / MGZ HGM / HGZ LGZ cyl. 5,0 MGM / MGZ HGM / HGZ LGZ cyl. 10,0 Crankcase heater Depending on the application, the refrigerant charge of the plant often exceeds the above mentioned values. For this reason Bluestar condensing units are fitted with a crankcase heater. This PTC heating element protects against off-cycle migration of refrigerant; but it is only effective if the oil temperature is maintained 11K above the saturated temperature of the refrigerant. Tests must be conducted to insure that the appropriate oil temperature is maintained under all ambient conditions. For refrigeration systems with an outdoor condensing unit installation under low ambient temperature or for low evaporating temperature systems with very important refrigerant charge, an additional belt type heater must be used to avoid refrigerant condensation in the compressor. See below the references of these accessories. On the initial start up or after The following crankcase heaters can be delivered for each model of compressors. Condensing Compressor PTC heater Belt heater accessory unit model type Type Ref. Type Ref. MGM / MGZ W HGM / HGZ cyl. LGZ V MGM / MGZ W 50 W HGM / HGZ cyl V LGZ V MGM / MGZ W HGM / HGZ cyl. LGZ V a long shut down period the crankcase heater must be energized at least 12 hours before first start up. During normal operation the crankcase heater must be permanently energized. Suction accumulator This component offers protection against refrigerant floodback during operation. It helps protect against off-cycle migration by adding internal free volume to the low side of the system. Tests must be conducted to insure the amount of off-cycle migration to the compressor does not exceed the compressor s charge limit in the table above. Pump down cycle This is the most effective way to protect against off-cycle migration of liquid refrigerant. Thermostat Solenoid valve Expansion valve Evaporator Sight glass Filter drier Pump down sequence The liquid solenoïd valve is controlled by a room thermostat.when the room temperature has fallen down to the thermostat setting point, the solenoïd valve will be closed.the compressor will pump down and low pressure will decrease until the low pressure switch cut off set point, then the compressor will stop.when using a pump down cycle the cut-in set point of the low pressure switch must be lower than the saturated pressure of the refrigerant corresponding to the lowest ambient temperature around evaporator and compressor. Typical cold room refrigeration circuit Hz catalogue
22 Operating limits and safeties CONTROL CIRCUIT F0 KS 180 s KM1 SAFETY PRESS LP A Q TH CONTROL PRESS P BP P B HP P C D LLSV KM1 KM2 KM3 KS L1L2 L3 Q 1 F4 KM1 KM2 KM3 F1 F2 F3 M1 M2 M3 COMP FAN FAN PTC Suggested pump down control wiring Legend: Q1: power fused disconnect FO: control circuit fuses F1: compressor overload protection F2-F3: fan overload protection F4: PTC fuses KM1: compressor contactor KM2-KM3: fan contactor KS: safety devices 180s: short cycle timer TH: control (thermostat) LLSV: liquid line solenoid valve SAFETY PRESSURE SWITCH SETTING The Danfoss HP/LP pressure switch KP17W (automatic reset), or KP15 (manual reset), is not factory preset. Be sure that the highpressure setting will not exceed the receiver maximum service pressure. exceed the values shown in the following table.the high pressure switch can be set to lower values depending on the application and ambient conditions. The HP switch must either be in a lockout circuit or be a manual reset device (KP15) to prevent short cycling on its high pressure limit. High pressure safety The high pressure safety switch is required to stop the compressor, should the discharge pressure Refrigerant R22 R134a R404A Setting (bar g.) 28 * Setting (psig) * Except MGM / HGM unit with 3 litre receivers: 25 bar, 360 Psig Low pressure safety The low pressure safety switch protects the compressor against deep vacuum operation, a potential cause of failure due to internal arching. The low pressure safety cut-out shall never be set below 0.1 bar relative (2 psig). For systems without pump-down, the LP switch signal contact shall be used to energize a low pressure safety alarm. Suggested high and low pressure safety switch setting Depending on the application and ambient conditions the following set point values could be used. Model Refrigerant Low pressure side High pressure side Cut in (bar) Cut off (bar) Cut in (bar) Cut off (bar) MGM - HGM R R134a MGZ - HGZ R404A / R LGZ R404A / R Condensing pressure control The double fan condenser design makes condensing pressure control easy. A high pressure control pressurestat (type KP 5 Danfoss) could be used for starting and stopping fans to prevent a wide fluctuation of the condensing temperature. Continuous fan speed control is an alternative method for maintaining constant condensing temperature under fluctuating ambient. This will also improve compressor operational reliability, noise level and energy consumption. Both single and three phase fan motors used in Bluestar units are suitable for speed control. Fan speed controllers usually use the voltage feed to the motor to control its speed as a function of the condensing temperature or pressure. 50 Hz catalogue 22
23 Operating limits and safeties CYCLE RATE LIMIT There must be no more than 12 starts per hour. A higher number reduces the service life of the motor-compressor unit. If necessary, use an anti-short-cycle timer in the control circuit. A three-minutes time-out is recommended. When a soft start equipment is used the maximum number of starts shall not exceed 6 per hour. SOUND LEVEL Bluestar condensing units are engineered for low sound and vibration characteristics with a compact condenser and two fan construction. The table below gives the unit sound level. For extra low sound system requirements, a compressor acoustic hood could be used to further dampen compressor sound. These accessory covers incorporate sound proofing materials and achieve excellent high and low frequency attenuation in the range of 6 to 8 db(a). These acoustic hoods are of the quick and easy fit-on type and do not excessively increase the overall size of the compressor. Sound power Sound pressure Model level measured level calculated LWA (dba) 2 m (dba) Compressor type Acoustic hood ref. MGM / MGZ ,7 55,7 MGM ,5 55,5 MGM / MGZ 028, MGZ ,3 53,3 1 cyl MGM / MGZ 032, MGM ,5 60,5 MGM / MGZ 040, MGZ ,3 60,3 MGM / MGZ ,8 62,8 MGM / MGZ ,2 61,2 2 cyl MGM / MGZ ,6 66,6 MGM / MGZ ,9 68,9 MGM / MGZ ,4 69,4 4 cyl HGM / HGZ ,7 55,7 HGM / HGZ HGM / HGZ ,5 60,5 HGM / HGZ ,5 58,5 1 cyl HGM ,4 60,4 HGZ / HGZ 040, HGZ ,3 60,3 HGM / HGZ ,9 66,9 HGM / HGZ ,3 67,3 2 cyl HGM / HGZ ,5 67,5 HGM / HGZ ,9 68,9 HGM / HGZ ,4 69,4 4 cyl LGZ ,5 55,5 LGZ ,5 60,5 LGZ LGZ LGZ ,8 68,8 LGZ ,4 69,4 1 cyl cyl cyl Performance data table is based on Ari conditions: Evaporating temperature: 7.2 C Condensing temperature: 54.4 C Superheat: 11.1 K Compressor motor code 4: 400 V / 3 / 50 Hz For further technical details, refer to Danfoss Commercial Compressors Technical information n 051, or contact Danfoss Commercial Compressors sales organisation Hz catalogue
24 The Danfoss product range for the refrigeration and air conditioning industry: Compressors for refrigeration and air conditioning These products include hermetic reciprocating compressors, scroll compressors and fan-cooled condensing units. Typical applications are air conditioning units, water chillers and commercial refrigeration systems. Compressors and Condensing Units This part of the range includes hermetic compressors and fan-cooled condensing units for household refrigerators and freezers, and for commercial units such as bottle coolers and drinks dispensers. We also offer compressors for heat pumps, and 12 and 24 V compressors for refrigerators and freezers in commercial vehicles and boats Appliance Controls Danfoss offers a range of customer-specific electromechanical thermostats for refrigerators and freezers, electronic temperature controls with or without display, and service thermostats for use when servicing refrigeration and freezing appliances. Refrigeration and air conditioning controls Our full product range covers all control, safety, system protection and monitoring requirements in mechanically and electronically controlled refrigeration and air conditioning systems. The products are used in countless applications within the commercial and industrial refrigeration and air conditioning sectors. 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. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved. GA 036 GB - 02/03 replace GA 036 GB - 02/00 Danfoss Commercial Compressors BP 331 F Trévoux France Tél (33) Fax (33)
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