Baxi Potterton BBU 15 HE manual Site Requirements, Builders Opening Fig, Location

390mm min

490mm max

584mm min

SURROUND OR FINISHED

WALL FACE

LEVEL

305mm minimum

Fig. 9

5.0Site Requirements

5.1Builders Opening (Fig. 9)

1.The boiler unit is designed to fit within a standard builders opening, the minimum dimensions of which are as shown.

Height 570mm

Width 584mm

Depth 305mm

2.The opening should be soundly constructed of brick, pre-cast concrete or be a proprietary builders opening.

3.The base of the opening should be sound and non- combustible and must be flat and level.

4.The base of the builders opening should be at the same height as the finished level of the hearth.

IMPORTANT: If a false chimney breast is intended to house the boiler, a simulated builders opening, within the breast, must be provided.

5.The builders opening must not communicate with voids, pipe ducts or spaces other than the room in which the appliance is situated.

5.2Location

1.The appliance must be installed in the living space of a dwelling. It is recommended that it is a ground floor location.

2.Restrictions to the siting of the appliance are covered by BS 5546. The appliance may not be installed in bathrooms or shower rooms. bedrooms or bed sitting rooms.

5.3Fireplace Opening & Surround

1.If a fireplace surround is to be used, it must be centrally placed and have opening sizes as shown in Fig. 9.

5.4Firefont Frame Extension Kit

1.To accommodate the firefront there must be at least 95mm from the surround or finished face to the front of the boiler.

2.If necessary this can be increased by the use of Frame Extension Kits. Each extension increases the effective depth of the opening by 50mm.

3.See the instructions supplied with the firefront for full details.