GB/T 25861-2023Water-source high temperature heat pumps using the vapor compression cycle (English PDF)

4.2 Basic Parameters

4.2.1 The temperature range of the unit water source is shown in Table 1.

5.1.8 The insulation layer of the units shall have good insulation performance, and be non-toxic, odorless and flame-retardant.

5.1.9 The units shall have protection functions, such as motor overload protection, phase loss protection (three-phase power supply), water system water failure protection, antifreeze protection, and high- and low-pressure protection of the refrigeration system, etc. Various control functions are normal, and various protection devices shall meet the design requirements and be sensitive and reliable.

5.1.10 The heat exchange equipment shall have the corresponding anti-corrosion performance, and the units shall not contaminate the water source during use.

5.1.11 The outer surface of the units shall be clean and the painted surface shall be smooth. Pipeline accessories shall generally be installed horizontally and vertically. Before filling the refrigerant, the surface in the units that comes into contact with the refrigerant and lubrication shall be kept clean and dry.

5.1.12 The materials of the refrigeration system components of the units shall not deteriorate under the action of refrigerant, lubricating oil and their mixtures, and shall ensure the normal operation of the whole units.

5.1.13 The regulating device of the units with energy regulation shall be sensitive and reliable.

5.2.1 Air tightness, vacuum and pressure test

5.2.1.1 The air tightness requirements for the units shall comply with the provisions of

5.2.1 in GB/T 18430.1-2007.

5.2.1.2 The vacuum requirements for the units shall comply with the provisions of

5.2.2 in GB/T 18430.1-2007.

5.2.1.3 The pressure test requirements for the units shall comply with the provisions of

5.2.3 in GB/T 18430.1-2007.

5.2.2 Operation When the units are normally operating, the inspection items shall meet the design requirements.

5.2.3 Nominal heating capacity The measured nominal heating capacity of the units shall not be less than 95% of the indicated value.

5.2.4 Nominal heating power consumption The measured nominal heating power consumption of the units shall not be greater than 110%

6.3.1 Air tightness, vacuum and pressure tests

6.3.1.1 The air tightness test of the units shall be carried out in accordance with the provisions of "air tightness test" in

6.3.1 of GB/T 18430.1-2007.

6.3.1.2 Vacuum test. after passing the air tightness test, vacuumize the units to

80 Pa and maintain the pressure for at least 30 minutes.

6.3.1.3 The pressure test shall be carried out in accordance with the provisions of "pressure test" in

6.3.1 of GB/T 18430.1-2007.

6.3.2 Operation test The units shall be operated under conditions approximate to the nominal heating conditions, and the operating conditions of the units, the sensitivity and reliability of the safety protection devices shall be checked, and the actions of the temperature, electrical appliances and other control elements shall be checked to see whether they are normal.

6.3.3 Nominal heating capacity test The nominal heating capacity of the units shall be tested under the nominal heating conditions specified in Table 4 in accordance with the refrigerant method in GB/T 10870-2014.

6.3.4 Nominal heating power consumption test When the units are tested under the nominal heating capacity, the input power and current of the units shall be measured.

6.3.5 Test of coefficient of performance for heating The coefficient of performance for heating of the units is calculated based on the data measured in tests of

6.3.4 in accordance with the provisions of GB/T 10870-2014.

6.3.6 Maximum heating operation test The maximum heating operation test of the units shall be carried out in accordance with the following provisions.

a) The test voltage is the rated voltage (not exceeding the rated voltage 10%). After the operation under the maximum heating operation conditions specified in Table 4 becomes stable, during the entire test process, the units shall normally operate without any faults;

b) The units shall be able to continuously operate, and the motor overload protection device or other protection devices shall not operate;

c) When the units are shut down for 10 minutes, re-start and continuously operate them for 1 hour, but the motor overload protector is allowed to trip off within the first 5 minutes of the startup operation, and it is not allowed to action thereafter; if the motor overload protector that trips off within the first 5 minutes of the re-started continuous operation is not reset, and reset within more than 30 minutes of shutdown, the units shall continuously operate for 1 hour.

6.3.7 Minimum heating operation test The units shall continuously operate for at least 30 minutes at the rated voltage in accordance with the minimum operation heating conditions specified in Table 4.

6.3.8 Noise test The units are tested at the rated voltage and rated power and approximate to the nominal heating conditions in accordance with the rectangular hexahedron measurement method in JB/T 4330- 1999.The sound pressure level is calculated in accordance with the surface average sound pressure level method in JB/T 4330-1999.

7.2 Sampling Inspection

7.2.1 The units shall be sampled from the products that have passed the exit-factory inspection, and the inspection items and test methods shall be in accordance with the provisions of Table 7. Table 7 -- Inspection Items No. Item Exit-factory Inspection Sampling Inspection Type Inspection Technical Requirements Test Methods

b) Product name and model;

d) Main technical performance parameters (nominal heating capacity, refrigerant type and volume of filling, rated voltage, frequency and number of phases, total input power, overall dimensions of the unit, and mass, etc.);

e) Product exit-factory No.;

f) Manufacturing date.

8.1.2 The units shall have a marking indicating the operating status, direction, water flow direction, liquid level and oil level mark, etc.

8.1.3 The units shall be accompanied by technical documents, such as product certificate, instruction manual and packing list, etc. The contents of the product certificate shall include.

a) Product model and name;

b) Product exit-factory No.;

c) Inspection conclusion;

d) Signature or seal of the inspector;

e) Inspection date. The contents of the product instruction manual shall include.

a) Product model and name, scope of application, serial No. of this document, noise and water system pressure loss;

b) Product structural diagram, electrical schematic diagram and wiring diagram;