GB/T 18837-2015 PDF EnglishUS$150.00 · In stock · Download in 9 seconds
GB/T 18837-2015: [Including 2021XG1] Multi-connected air-condition (heat pump) unit Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 18837: Historical versions
Similar standardsGB/T 18837-2015: [Including 2021XG1] Multi-connected air-condition (heat pump) unit---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT18837-2015GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 27.200 J 73 Replacing GB/T 18837-2002 Multi-connected air condition (heat pump) unit Issued on. DECEMBER 10, 2015 Implemented on. JULY 01, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 4 Type, model and basic parameter... 8 5 Requirements... 9 6 Test... 14 7 Inspection rules... 22 8 Labeling, packaging, transportation and storage... 24 Annex A... 27 Annex B... 29 Annex C... 69 Annex D... 79 Annex E... 80 Annex F... 82 Annex G... 841 ScopeThis Standard specifies the terms and definitions, types, models and basic parameters, requirements, tests, inspection rules, labeling, packaging, transportation and storage of multi-connected air condition (heat pump) unit (hereinafter referred as the “unit”). This Standard is applicable to multi-connected air condition (heat pump) unit which uses A1 freezing medium as stipulated in GB/T 7778.For the unit and dual cooling circulation system and multiple cooling circulation system which use A2L freezing medium, this Standard is served as reference.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1.Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 6388 Transport package shipping mark GB/T 7778 Number designation and safety classification of refrigerants GB 9237 Mechanical refrigerating systems Used for cooling and heating - Safety requirements3 Terms and definitionsFor the purpose of this Standard, the terms and definitions given in JB/T 7249 and GB/T 17758 and as follows apply. 3.1 multi-split air condition (heat pump) unit A cooling circulation system that is constituted of one or many outdoor units connected to many direct evaporated indoor units of different types and capacities or of the same type and capacity that directly supplies the processed air to one or many areas. 3.2 Heat recovery multi-split air-condition (heat pump) unit A unit with different indoor units operating at heating and cooling modes at the same time. During the operation, the unit can recycle the heat of condensation of indoor unit operating in the cooling mode to the indoor unit operating in the heating mode. 3.3 Cooling (heating) capacity of indoor machine Indoor unit that discharges (liberates) the heat from an enclosed space, room or area in a unit time under the specified cooling (heating) capacity test conditions, expressed in W. 3.4 Maximum ordonnance rate The maximum value of the ratio of the total of nominal cooling capacities of indoor units to the total of nominal cooling capacities of outdoor units, expressed in %. 3.5 Minimum ordonnance rate The minimum value of the ratio of the total of nominal cooling capacities of indoor units to the total of nominal cooling capacities of outdoor units, expressed in %.4 Type, model and basic parameter4.1 Type 4.1.1 Classification by functions. single-cold, heat pump, heat recycling. 4.1.2 Classification by the structural form of indoor unit. floor stand, wall mounted, ceiling hung, embedded, hidden mounted, air pipe type. 4.2 Model The model of unit shall be designated by the manufacturer, however, the model shall reflect the cooling capacity of the unit under the nominal operating conditions. 4.3 Basic parameters 4.3.1 The power of unit is the rated voltage 220V single phase or 380V three phase AC power with the rated frequency of 50Hz. 4.3.4 For indoor unit or outdoor unit which is not connected to air pipe on site, its external static pressure is 0 Pa; for indoor or outdoor unit with air pipe, the external static pressure shall be indicated.5 Requirements5.1 General requirements 5.1.1 The unit shall comply with this Standard; and it shall be produced according to the drawings and technical documents which are approved according to the stipulated procedure. 5.1.4 The calibration of the nominal cooling capacity of indoor unit shall be carried out in accordance with the test method as stipulated in Annex G. 5.2 Safety requirements The safety requirements of the unit shall comply with GB 25130 and GB 9237. 5.4.4 Requirements on normal operation The unit shall work safely and reliably under various nominal conditions prescribed by the manufacturer, including maximum height difference between indoor and outdoor units, maximum connecting pipe length between indoor and outdoor units, maximum height difference between indoor units, maximum ordonnance rate, minimum ordonnance rate, cooling at the maximum environmental temperature, and heating at the minimum environmental temperature, etc. 5.4 Performance requirements 5.4.1 Cooling system sealing property The leakage amount of freezing medium of each part of cooling system shall not be greater than 14 g/a. 5.4.3 Cooling capacity The actual cooling capacity of the unit shall not be lower than 95% of the nominal cooling capacity. 5.4.4 Cooling consumed power 5.4.8 Maximum operating cooling 5.4.8.1 Each part of the unit shall not be damaged and shall work normally during the maximum cooling operation of the unit; overload protector shall not be tripped off. 5.4.9 Maximum operating heating 5.4.9.1 Each part of the unit shall not be damaged; it shall work normally during the maximum operating heating period; the overload protector shall not be tripped off. 5.4.9.2 When the unit stops after 3 min, re-start the unit for 1 h continuous operation; during which period, the overload protector is allowed to trip-off within the first 5 min of activating operation, however, the tripping-off is not allowed after that; for the unit with overload protector not reset within the first 5 min but reset within 30 min since shutdown, 1 h continuous operation is required. 5.4.17 Water-side pressure-drop The water-side pressure-drop of water-cooled unit through water-cooled heat exchanger under the stipulated operating conditions shall not be greater than 105kPa nor greater than 115% of the indicated value.6 Test6.1 Test instruments and test operating conditions 6.1.1 The instruments used in the cooling capacity, heating capacity tests and seasonal energy efficiency ratio test (SEER) annual performance factor test (APF) shall comply with Annex A of GE/T 17758-2010 and Annex B of GB/T 10870-2014. 6.1.2 The cooling integrated part load value test of water-cooled unit and test instruments shall comply with Annex A of GB/T 17758-2010. 6.1.3 The test operating conditions are described in 4.3.3 where the unit shall be tested at the corresponding condition. 6.3.6 Direct blow-off indoor unit combination shall be used preferably for test or the indoor unit combination with the minimum outdoor static pressure air pipe. 6.4 Test methods 6.4.1 Seal performance test of cooling system For the unit of which the cooling system uses normal freezing medium AND the cooling capacity is less than or equal to 28kW, USE normal freezing-medium leak detector of which the sensitivity is 1X10-6 Pa·m3/s to conduct the test; for the unit of which the cooling capacity is greater than 28kW, USE normal freezing-medium leak detector of which the sensitivity is 1X10-5 Pa·m3/s to conduct the test. 6.4.5 Heating capacity test 6.4.5.1 Test shall be carried out according to Annex C under the heating operating conditions as stipulated in 4.3.3. 6.4.5.2 Indoor unit and outdoor unit shall be connected according to the connection method and requirements as shown in Figure 1, 2, 3 or 4.Start all the indoor and outdoor units to assure them at the working state. Measure the heating capacities of all the indoor units which are being operated; the total of heating capacities are the heating capacity of the tested unit. 6.4.11 Minimum operating heating test of indoor unit Indoor unit and outdoor unit shall be connected according to the connection method and requirements as shown in Figure 1, 2, 3 or 4.Start all the indoor and outdoor units to assure them at the working state. Regulate the temperature controller, fan speed, air door, and guide blade of the tested indoor unit to the state that the maximum heating capacity can be easily reached, while not violating the stipulations of manufacturer; continue operating for 4 h after the units operate stably at the minimum operating heating conditions as stipulated in Table 1.7 Inspection rules7.1 Exit-factory inspection Each unit shall receive exit-factory inspection; the inspection items are specified in Table 7. 7.2 Sampling inspection 7.2.1 The sample unit shall be selected from the products which have been tested as qualified. The inspection items and test methods are prescribed in Table 7. 7.3 Type inspection 7.3.1 For the new product or approved product with significant improvement, the first product shall receive type inspection. The type inspection items are prescribed in Table 7. 7.3.2 The time for type inspection shall not be less than the time as prescribed in the test methods; if there is fault occurred during operation, solve the fault and then re-start the inspection.8 Labeling, packaging, transportation and storage8.1 Labeling 8.1.1 Each unit shall be set with permanent nameplate at the eye-catching place of indoor and outdoor units. The contents on the nameplate shall comply with GB/T 13306.The nameplate shall display the following contents. 8.1.2 For air cooled unit, the main parameters such as middle cooling capacity, middle input power, minimum cooling capacity, minimum input power, middle heating capacity, middle input power, minimum heating capacity, minimum input power, low temperature heating capacity, low temperature input power, and standby power shall be indicated at the corresponding place (such as nameplate or instructions). 8.2 Packaging 8.2.1 The unit shall be cleaned before packaging. Each part shall be sterilized and dried; the rust-prone components shall be coated with anti-rust agent. 8.2.2 The unit shall be covered in a plastic bag or water proof paper, then fixed in the packing box to protect the product from moisture or mechanical damage. 8.3 Transportation and storage 8.3.1 The unit shall be protected from collision, inclination or rain or snow during transportation or storage. 8.3.2 The product shall be stored in a dry and well-ventilated warehouse. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 18837-2015 be delivered?Answer: The full copy PDF of English version of GB/T 18837-2015 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 18837-2015_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 18837-2015_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 18837-2015 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 18837-2015?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18837-2015 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB/T 18837-2015?A step-by-step guide to download PDF of GB/T 18837-2015_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 18837-2015". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
