Heating, Ventilation, Air conditioning/VVS Archive

Heating, Ventilation, Air conditioning/VVS Files

File size: 259.51 KB Download

Wood-burning stoves: Heat output and efficiency (NT VVS 071)

NT VVS 071

  • This test procedure describes how the heat output and efficiency of wood-burning stoves for domestic use can be tested.

File size: 257.16 KB Download

Wood-burning stoves: Safety (NT VVS 070)

NT VVS 070

  • This test procedure describes how the safety of wood-burning stoves for domestic use can be tested.

File size: 172.57 KB Download

Buildings - exhaust ventilation: Exhaust fan plant capacity, air flows (NT VVS 069)

NT VVS 069

  • The scope of this NORDTEST method is to determine the capacity of the exhaust fan plant and the air flow through the building. 

File size: 24.00 KB Download

Air heaters: Solid fuel, safety (NT VVS 067)

NT VVS 067

  • This NORDTEST method describes testing of air heaters using solid fuels. The test method concerns safety characteristics.

File size: 25.78 KB Download

Water supply systems - compression fittings for copper pipes: Tightness (NT VVS 065)

NT VVS 065

  • This NORDTEST method decribes a test of tightness for compression fittings for copper pipes subjected to internal hydraulic pressure.

    This method replaces the test stated in NT VVS 015 Appendix A item 6.1 and 6.2.

File size: 25.17 KB Download

Water supply systems - compression fittings for copper pipes: Resistance to pull out (NT VVS 064)

NT VVS 064

  • This NORDTEST method decribes a test of resistance to pull out of compression fittings for copper pipes subjected to longitudinal tension.

    The method replaces the test stated in NT VVS 015 Appendix A item 6.3.

File size: 47.24 KB Download

Air transference: Intake and inlet air (NT VVS 063)

NT VVS 063

  • The purpose of this method is to determine the short-circuiting of air in ventilation installations. The method is used to determine the content of extract air contained in the intake or inlet air.

File size: 41.05 KB Download

Thermostatic mixing valves: Varying water temperature and pressure (NT VVS 062)

NT VVS 062

  • The test proposed below specifies a method which permits the measurement of difference in the outflowing water temperature regulated by a thermostatic mixing valve, when the temperature or the pressure varies in the inflowing water, and is caused by variation of the actual need of flow in domestic water system.

File size: 158.86 KB Download

Thermostatic mixing valves: Hysteresis (NT VVS 061)

NT VVS 061

  • The test proposal below specifies a method which permits the measurement of the differences in outflowing water temperatures with the same instant flow, when a thermostatic mixing valve is operating, and the differences are caused by increasing, respectively decreasing water temperatures, and when the pre-set value of the controller is constant.

File size: 34.92 KB Download

Thermostatic mixing valves: Proportional band (NT VVS 60)

NT VVS 060

  • The test proposed below specifies a method which permits the measurement of the proportional band.

File size: 59.22 KB Download

Thermostatic mixing valves: Flow resistance (NT VVS 059)

NT VVS 059

  • The test proposal below specifies a method which permits the measurement of a water flow at different pressures. Flow resistance denotes the resistance excerted by a thermostatic mixing valve to a flow of liquid.

File size: 61.50 KB Download

Water traps: Self-cleaning (NT VVS 057)

NT VVS 057

  • The testing is carried out to determine the minimum flow which must
    pass through the test object for the water trap to be self-cleaning.

File size: 1.49 MB Download

Active solar heating systems: Guidelines for monitoring (NT VVS 056)

NT VVS 056

  • The aim of this project is to establish common guidelines for monitoring active solar heating systems and to produce a reporting model.

File size: 79.84 KB Download

Buildings: Total outdoor air inflow (NT VVS 055)

NT VVS 055

  • This NORDTEST method applies to the determination of the total outdoor airflow into buildings, by means of tracer gas, according to the "decay method".

File size: 93.59 KB Download

Anti-flooding valves,non-fecal sewage: Temperature resistance (NT VVS 054)

NT VVS 054

  • This NORDTEST method may be used to test whether an anti-flooding valve for non-fecal sewage is resistant to the temperatures which may occur in the sewer system and to establish whether the antiflooding valve tightend up in case of impounded, polluted water.

File size: 64.47 KB Download

Anti-flooding valves, fecal sewage: Temperature resistance (NT VVS 053)

NT VVS 053

  • This NORDTEST method may be used to test whether an anti-flooding valve for fecal sewage is resistant to the temperatures which may occur in the sewer system and to establish whether the anti-flooding valve is tightend up in case of impounded, polluted water.

File size: 35.26 KB Download

Pipes for potable water supply - Unplasticized polyvinyl chloride (upvc): Extractability of toxic additives (NT VVS 052)

NT VVS 052

  • This NORDTEST method specifies a test method for the determination of the extractability of certain stabilizers of unplasticized PVC, in order to verify that the extracted quantities do not exceed certain fixed concentrations.

File size: 182.41 KB Download

Balancing valves: Flow resistance (NT VVS 051)

NT VVS 051

  • This method is to be used for testing the flow resistance of balancing valves with presetting facility. A method for calculation of the 95% interval of prediction on the flow resistance for a number of equal valves is described.

File size: 1.80 MB Download

Sewer systems: Internal inspection – evaluation of methods and equipment (NT VVS 050)

NT VVS 050

  • The method can be used to test the quality and precision of equipment and or personnel in internal inspection of sewer systems. The test includes the total performance of equipment and personnel.

File size: 16.36 MB Download

Flexible sewers: Evaluation of methods and equipment for field measurements of deformation (NT VVS 049)

NT VVS 049

  • The method is designed to test the qualities and accuracy of methods and equipments used for field measurements of deformations of flexible sewers.

File size: 81.15 KB Download

Buildings: Total flow rate of air - continuous measurement (NT VVS 048)

NT VVS 048

  • The scope of the Nordtest method is to describe a method for continuous measurement of air-change rates in occupied and unoccupied buildings.

File size: 86.92 KB Download

Buildings - ventilating air: Mean age of air (NT VVS 047)

NT VVS 047

  • The scope of the method is to determine the room-average age of air in a ventilated space.

File size: 35.05 KB Download

Air raid shelters - pressure relief valves: Opening pressure (NT VVS 046)

NT VVS 046

  • The purpose of this NORDTEST method is to determine the opening pressure of pressure relief valves in air raid shelters.

File size: 46.91 KB Download

Air raid shelters equipment: Flow resistance (NT VVS 045)

NT VVS 045

  • The purpose of this NORDTEST method is to measure the flow resistance caused by components connected with ventilation of air raid shelters.

File size: 41.22 KB Download

Air raids shelters - ventilating aggregate: Sound pressure level (NT VVS 044)

NT VVS 044

  • This NORDTEST method describes the procedure for measuring the sound pressure level of ventilating aggregates for use in air raid shelters.

File size: 117.12 KB Download

Air raid shelters - ventilating aggregate: Performance data (NT VVS 043)

NT VVS 043

  • The purpose of this NORDTEST method is to obtain performance data about ventilating aggregates for use in air raid shelters.

File size: 36.33 KB Download

Gullies: Pressure resistance (NT VVS 042)

NT VVS 042

  • This Nordtest method is designed to determine wether the water trap in the gully can withstand certain pressure changes in the drainage system.

File size: 37.35 KB Download

Gullies: Back-flow of waste water (NT VVS 041)

NT VVS 041

  • This NORDTEST method is designed to determine whether the construction of the gully prevents back-flow of waste water to enter the gully with a normal back-flow in the drainage system.

File size: 38.31 KB Download

Gullies: Self-evacuation (NT VVS 040)

NT VVS 040

  • This NORDTEST method is designed to determine whether the water seal in the gully trap can be reduced or be broken due to a syphon effect which can occur in a normal installation.

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