Boiler location and clearances

This boiler is only suitable for installing internally within a property at a suitable location on a fixed, rigid non-combustible surface of at least the same size as the boiler and capable of supporting the boiler weight.

Compartments: Follow the requirements of BS 6798 and BS 5440 Part 2 and note:

• Minimum clearances must be maintained.
• An access door is required to install, service and maintain the boiler and any ancillary equipment.
• If fitting the boiler into an airing cupboard use a non-combustible perforated material (maximum hole sizes of 13mm) to separate the boiler from the airing space.

Unvented compartment clearances

The diagram shows the minimum space required to install and service the boiler inside an unvented compartment.

Airing cupboard clearances

The diagram below shows the minimum space required to install and service the boiler within an airing cupboard.

Venting compartments

If the clearances are less than those stated for the options above then ventilation must be provided as described in BS 5440.

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

Minimum free air required for venting:

• For air directly from outside: 148cm² per vent.
• For air from internal space/room: 296cm² per vent.