IS 17150 : 2025 Mini Domestic Water Heater for Use with Piped Natural Gas (PNG) - Specification

ICS 75.160.30; 97.040.20

MED 23

Revised Standard from Last Update.

1 SCOPE

1.1 This standard covers the requirements for instantaneous domestic water heater of nominal useful heat output less than 25 kW (based on gross calorific value), for use with Piped Natural Gases (PNG) at a working pressure of 21 mbar (21.41 gf/cm2). It is an inlet water controlled appliance. It specifies the main constructional and performance characteristics for the instantaneous domestic water heater. It also sets the appropriate test methods for evaluating test characteristics. Appliances for boiling water are not covered in this standard.

NOTE - CNG filed cylinder or PNG may be used for performance test and tests according to 4.1.9 and 4.1.11.

1.1.1 For convenience, this standard has been divided into three sections as follows:

a) Section 1 - Construction;

b) Section 2 - Performance requirements; and

c) Section 3 - General.

2 REFERENCES

The standards given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards:

IS No.	Title
IS 554 : 1999/ISO 7-1 : 1994	Pipe threads where pressuretight joints are made on the threads - Dimensions, tolerances and designation (fourth revision)
IS 2305 : 1988	Method for mercurous nitrate test for copper and copper alloys (first revision)
IS 5116 : 2020	Domestic and commercial equipment for use with LPG - General requirements (fourth revision)
IS 6480 : 2022	Terms relating to domestic and commercial gas burning appliances - Glossary (second revision)