What is BS 6332-6 – Thermal performance of fanned-circulation ducted-air heater/circulator about? 
BS 6332 is a European Standard that discusses thermal performance of domestic gas appliances. BS 6332-6 is the sixth part of the BS 6332 series, which provides specific requirements for enhanced thermal performance of fanned-circulation ducted-air heater/circulator.
The main objective of BS 6332-6 is to demonstrate the performance and operational efficiency of fanned-circulation ducted-air heater/circulator such that they are reliable and effective for use.
BS 6332-6 specifies the thermal efficiency requirements and associated methods of test for gas-fired appliances consisting of a fanned-circulation ducted-air heater of rated heat input not exceeding 60 kW1) combined with a circulator of rated heat input not exceeding 8 kW.
BS 6332-6 also covers fanned-circulation ducted-air heaters which are designed to be fitted with circulators, as a purchaser’s option.
BS 6332-6 only applies to circulators intended for use as an integral part of the combined appliance. Circulators intended for independent use are covered by BS 6332-1.
BS 6332-6 covers appliances of the following
categories, as described in A.1.3 of BS 4947:1984:
- IT, IN, IL/B, IL/P
- IITN, IINL, IINL/B, IINL/P
- III, IIITNL/B, IIITNL/P
and of the following types, as defined in BS 1179-6:1980:
- Type B: open-flued appliances
- Type C: room-sealed appliances
- Type C1: balanced-flue appliances
- Type C2: Se-duct appliances
BS 6332-6 is only applicable to the appliances listed above that comply with BS 5258-9.
Who is BS 6332-6 - Thermal performance of fanned-circulation ducted-air heater/circulator for?  
BS 6332-6 on thermal performance of fanned-circulation ducted-air heater is relevant to:  
- Manufacturers of domestic gas appliances
- Manufacturers of fanned-circulation ducted-air heater
- Quality control and testing personnel 
- Mechanical engineers 
- Product designers 
Why should you use BS 6332-6 - Thermal performance of fanned-circulation ducted-air heater/circulator?  
Fanned-circulation ducted-air heaters are used in buildings to regulate the temperature of gas appliances. If the fanned-circulation ducted-air heater does not meet the specific requirements during its manufacturing process, breakdown can lead to improper heating and high acoustical disturbances.
In this regard, BS 6332-6 provides best industry test methods and efficiency requirements for fanned-circulation ducted-air heater to demonstrate its thermal performance.
As a result, if you are a manufacturer of fanned-circulation ducted-air heater/circulator, by adopting BS 6332-6 test methods you can determine whether your products exhibit adequate thermal performance to be considered fit for purpose.
