Technical data

7.0 Site Requirements – page 13

Fig. 8

7.5 Ventilation of Compartments

1. Where the appliance is installed in a cupboard or

compartment, no air vents are required.

NOTE: The ventilation label on the front of the outer case

MUST NOT BE REMOVED when the appliance is

installed in a compartment or cupboard.

2. BS 5440: Part 2 Clause 4.2 refers to room sealed

appliances installed in compartments. The appliance

will run sufficiently cool without ventilation.

7.6 Gas Supply

1. The gas installation should be in accordance with

BS6891.

2. The connection to the appliance is a 22mm copper tail

located at the rear of the gas service cock (Fig. 8).

3. Ensure that the pipework from the meter to the

appliance is of adequate size. Do not use pipes of a

smaller diameter than the boiler gas connection

(22mm).

7.7 Electrical Supply

1. External wiring must be correctly earthed, polarised and

in accordance with current I.E.E. WIRING

REGULATIONS.

2. The mains supply is 230V ~ 50H

fused at 3A.

NOTE: The method of connection to the electricity supply

must facilitate complete electrical isolation of the

appliance.

Connection may be via a fused double-pole isolator with

a contact separation of at least 3mm in all poles and

servicing the boiler and system controls only.