BS 6332-6:1990

Committees responsible
Foreword
Specification
1 Scope
2 Definitions
3 Thermal performance
4 Test methods
Tables
1 Minimum net efficiency of air heater under still air
   conditions: claimed value
2 Minimum net efficiency of circulator under still air
   conditions: claimed value
Figures
1 Installation of type C2 air heaters on the test duct
2 Sampling probe for type B air heaters
3 Sampling probe for type C air heaters
4 Sampling position for type C1 air heaters
5 Sampling position for type C2 air heaters
6 Nomogram for the calculation of mean specific heat of
   dry combustion products
7 Test rig (circulator)

Thermal efficiency requirements and associated methods of test for appliances of rated heat input not exceeding 60 kW combined with a circulator of rated heat input not exceeding 8 kW and burning 1st, 2nd and 3rd family gases.

This Part of BS 6332 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 kW¹⁾. The combined appliance is usually of integral construction, the circulator being fitted inside the air heater casing.

It also covers fanned-circulation ducted-air heaters which are designed to be fitted with circulators, as a purchaser’s option.

This standard 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.

This Part covers appliances of the following categories, as described in A.1.3 of BS 4947:1984:

I_T, I_N, I_L/P;

II_TN, II_NL, II_NL/B, II_NL/P;

III, III_TNL/B, III_TNL/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.

This Part is only applicable to the appliances listed above that comply with BS 5258-9.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.