BS EN 16905-3:2017

What is BS EN 16905-3-Gas-fired endothermic engine-driven heat pumps? 

EN 16905 series is a European Standard that specifies the requirements, test methods, and test conditions for the rating and performance calculation of air conditioners and heat pumps using either air, water, or brine as heat transfer media, with gas-fired endothermic engine-driven compressors when used for space heating, cooling and refrigeration, hereafter referred to as “GEHP appliance”. 

BS EN 16905 only applies to appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions. 

BS EN 16905 only applies to appliances having: 

• Gas fired endothermic engines under the control of fully automatic control systems 
• Closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated 
• Where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation 
• Where the maximum operating pressure in the: 

1. Heating water circuit (if installed) does not exceed 6 bar 
2. Domestic hot water circuit (if installed) does not exceed 10 bar

BS EN 16905 applies to appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery. 

BS EN 16905-3 is the third part of the multi-series document that specifies the test conditions for the rating of energy parameters of gas-fired endothermic engine-driven heat pumps for heating and/or cooling mode including the engine heat recovery. 

Note: The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by BS EN 16905-4.  

Who is BS EN 16905-3-Gas-fired endothermic engine-driven heat pumps for? 

BS EN 16905-3 on gas-fired endothermic engine-driven heat pumps is applicable to: 

• Heat-pump manufacturers 
• Chemical and petrochemical industry 
• Pharmaceutical industry 
• Food & Beverages industry 
• Data centres 
• HVAC manufacturers 
• District heating applications  
• Water heating equipment manufacturers 

Why should you use BS EN 16905-3-Gas-fired endothermic engine-driven heat pumps? 

Gas-fired endothermic heat pumps are essentially air-source heat pumps that are powered by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water rather than electricity.  

BS EN 16905-3 provides you with environmental conditions and electrical power supply requirements for units designed for installation indoors and outdoors. Rating conditions in cooling and in heating are also covered. Moreover, recommendations on ideal inlet dry and wet bulb temperatures as per rating conditions for heating and cooling modes is provided in BS EN 16905-3. 

If you are a manufacturer or designer of gas-fired endothermic heat pumps, you can demonstrate reliability and credibility for your products with best industry guidance on gas-fired endothermic engine-driven heat pumps, by conforming to test conditions recommended by BS EN 16905-3.