Section 5: Solid fuel heating

5.1 Scope of guidance

This section provides guidance on meeting the energy efficiency standards in the Building Regulations for the following types of solid fuel heating appliances and systems used to deliver primary and secondary heating:

• batch-fed open fires
• batch-fed and automatic-feed dry room heaters/stoves
• batch-fed log and multi-fuel appliances
• automatic-feed pellet stoves with and without boilers
• batch-fed and automatic-feed room heaters with boilers
• batch-fed cookers with boilers not exceeding 7.5 kW
• batch-fed independent boilers and automatic-feed anthracite, wood pellet, wood chip and wood log fired independent boilers
• central heating systems using certain types of solid fuel appliances.

The guidance covers the following types of solid fuel: coal, anthracite, manufactured smokeless fuel, dual-fuel, wood logs, wood pellets and wood chips.

5.2 Solid fuel appliances for primary heating

Solid fuel appliances provided with new systems or as replacements in existing systems for primary heating in dwellings should have an efficiency (gross calorific value) not less than specified in Table 21 for that category of appliance.

****Table 21 Solid fuel appliance categories and recommended minimum efficiencies****

5.3 Central heating systems using certain types of solid fuel appliances

This section provides guidance on the following types of solid fuel appliance used to deliver primary heating as part of a central heating system:

• batch-fed open fires with high output boilers (appliance types D1 to D4 in Table 21)
• batch-fed and automatic-feed room heaters and stoves with boilers (appliance type F in Table 21)
• batch-fed cookers with boilers (appliance type G2 in Table 21)
• batch-fed independent boilers and automatic-feed anthracite, wood log, wood pellet and wood chip-fired independent boilers (appliance types J2 to J5 in Table 21).

Unless stated otherwise, the guidance applies equally to appliances that burn wood, wood pellets, house coal, manufactured smokeless fuels and anthracite.

For central heating systems with a solid fuel appliance installed as part of a new system or as a replacement component in an existing system:

a. the appliance should be from HETAS categories D, F, G and J in Table 21 and have a minimum efficiency (gross calorific value) which is not less than the value specified for its category

b. the ratio of room heat to water heat should be appropriate for the room and total property. This will require reference to installation practice guidelines and calculation of room and property heat loss. Advice on this is given in the HETAS guide and website referred to earlier

c. circulation, fuel storage, hot water storage, system preparation, water treatment and commissioning should be to the standards in Table 22

d. control of heating and hot water circuits should be to the standards in Table 23

e. pipework should be insulated to the standards in Table 24.

****Supplementary  information****

****Table 22 Recommended minimum standards for system circulation, fuel storage, hot water storage, system preparation and commissioning for solid fuel central    heating****

****Table 23   Recommended minimum controls for solid fuel central heating   systems****

****Supplementary  information****

****Table 24 Recommended minimum standards for insulation of pipework in solid fuel central heating systems****

5.4 Solid fuel appliances for secondary heating

Solid fuel appliances in new and existing dwellings that provide secondary heating and are not part of a central heating system should have the minimum efficiency (gross calorific value) specified in Table 21 for the category of appliance.

****Supplementary  information****

****Standards****

 

  1. 5.1 Scope of guidance
    1. 5.2 Solid fuel appliances for primary heating
      1. 5.3 Central heating systems using certain types of solid fuel appliances
        1. 5.4 Solid fuel appliances for secondary heating

          5.1 Scope of guidance

          5.1 Scope of guidance

          This section provides guidance on meeting the energy efficiency standards in the Building Regulations for the following types of solid fuel heating appliances and systems used to deliver primary and secondary heating:

          • batch-fed open fires
          • batch-fed and automatic-feed dry room heaters/stoves
          • batch-fed log and multi-fuel appliances
          • automatic-feed pellet stoves with and without boilers
          • batch-fed and automatic-feed room heaters with boilers
          • batch-fed cookers with boilers not exceeding 7.5 kW
          • batch-fed independent boilers and automatic-feed anthracite, wood pellet, wood chip and wood log fired independent boilers
          • central heating systems using certain types of solid fuel appliances.

          The guidance covers the following types of solid fuel: coal, anthracite, manufactured smokeless fuel, dual-fuel, wood logs, wood pellets and wood chips.

           

          5.2 Solid fuel appliances for primary heating

          Solid fuel appliances provided with new systems or as replacements in existing systems for primary heating in dwellings should have an efficiency (gross calorific value) not less than specified in Table 21 for that category of appliance.

          ****Table 21 Solid fuel appliance categories and recommended minimum efficiencies****

           

           

          5.3 Central heating systems using certain types of solid fuel appliances

          This section provides guidance on the following types of solid fuel appliance used to deliver primary heating as part of a central heating system:

          • batch-fed open fires with high output boilers (appliance types D1 to D4 in Table 21)
          • batch-fed and automatic-feed room heaters and stoves with boilers (appliance type F in Table 21)
          • batch-fed cookers with boilers (appliance type G2 in Table 21)
          • batch-fed independent boilers and automatic-feed anthracite, wood log, wood pellet and wood chip-fired independent boilers (appliance types J2 to J5 in Table 21).

          Unless stated otherwise, the guidance applies equally to appliances that burn wood, wood pellets, house coal, manufactured smokeless fuels and anthracite.

          For central heating systems with a solid fuel appliance installed as part of a new system or as a replacement component in an existing system:

          a. the appliance should be from HETAS categories D, F, G and J in Table 21 and have a minimum efficiency (gross calorific value) which is not less than the value specified for its category

          b. the ratio of room heat to water heat should be appropriate for the room and total property. This will require reference to installation practice guidelines and calculation of room and property heat loss. Advice on this is given in the HETAS guide and website referred to earlier

          c. circulation, fuel storage, hot water storage, system preparation, water treatment and commissioning should be to the standards in Table 22

          d. control of heating and hot water circuits should be to the standards in Table 23

          e. pipework should be insulated to the standards in Table 24.

          ****Supplementary  information****

          ****Table 22 Recommended minimum standards for system circulation, fuel storage, hot water storage, system preparation and commissioning for solid fuel central    heating****

          ****Table 23   Recommended minimum controls for solid fuel central heating   systems****

          ****Supplementary  information****

          ****Table 24 Recommended minimum standards for insulation of pipework in solid fuel central heating systems****

           

          5.4 Solid fuel appliances for secondary heating

          Solid fuel appliances in new and existing dwellings that provide secondary heating and are not part of a central heating system should have the minimum efficiency (gross calorific value) specified in Table 21 for the category of appliance.

          ****Supplementary  information****

          ****Standards****