Conservation of fuel and power: Approved Document L, Volume 1 — Dwellings

O N L I N E V E R S I O N L1(b), L2 6.12 For electric storage heaters, both of the following should be met. a. Automatic control of input charge should be provided. b. The rate of heat release from the appliance should be adjustable, using an adjustable damper or other thermostatically controlled method. 6.13 For electric panel heaters that are either part of a new system or replacement components, time and temperature control should be provided to allow separate control for either of the following. a. Each room. b. Each appliance, where this meets the guidance for thermostatic room controls in paragraphs 5.20 to 5.22. 6.14 For an electric warm air system that is either a new system or is a replacement component, both of the following should be provided. a. A programmable room thermostat or a time switch and room thermostat. b. Separately controllable heating zones that meet the guidance for thermostatic room controls in paragraphs 5.20 to 5.22. Solid fuel heating systems 6.15 Solid fuel appliances in new and existing dwellings should have a minimum efficiency (gross calorific value) as given in Table 6.4 for the category of appliance. 6.16 A solid fuel appliance belonging to category D1/2/3/4, F, G2, J2 or J5 of Table 6.4 that is used to deliver primary heating as part of a central heating system should comply with all of the following. a. Meet the general requirements for heating and hot water systems in Section 5. b. Have separate time controls for space heating and hot water circuits. c. Have automatic control of the burning rate. d. Follow the manufacturer’s instructions on the size and position of heat leak radiators designed to keep the system operating effectively by leaking heat. 6.17 A solid fuel appliance that is either part of a new central heating system or is a replacement component of a central heating system should meet both of the following. a. The appliance should be from categories D, F, G or J in Table 6.4. b. The appliance should have a ratio of room heat to water heat appropriate for the room and the total property. Building Regulations 2010 Approved Document L Volume 1, 2021 edition 43 O N L I N E V E R S I O N