Compartment installation

Compartment clearances

Follow the requirements of BS5410 and note:

• Minimum clearances must be maintained.

• An access door is required to install, service and maintain the boiler and any ancillary equipment, i.e. condensate trap.

• If fitting the boiler into an airing cupboard use a non-combustible material (if perforated, maximum hole sizes of 13mm) to separate the boiler from the airing space.

Compartment ventilation

• Ventilation must be provided for boilers fitted into compartments as described in BS5410.

• A minimum of 2 air vents must be fitted, one at low level (C) and another at high level (D) onto the same wall using the same air (E) for circulation.

• Free air must not be taken from a room or internal space containing a bath or shower and must not communicate with a protected area such as a hall, stairway, landing, corridor, lobby, shaft, etc.

• Air vents must allow access for clean free air and must be sited to comply with the flue terminal position requirements.

• Air ducting runs must not exceed 3m.

• Low level air vents must be less than 450mm from the floor.

• A warning label must be added to the vents with a statement to the effect: “Do not block this vent. Do not use for storage”.
  

A Compartment
B Boiler
C Low level vent
D High level vent
E Air supply

Conventional flue

Room sealed flue

*Internal air to and from a space/room inside the building.

**External air to and from directly outside the building.