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. 2.2

2.7

ONNECTION

2.8

ATER

ONNECTIONS

. 2.4

EGEND

A = Central Heating Flow

C = Gas Inlet

E = Central Heating Return

F = Safety Valve

G = Pump transportation screw

(remove before igniting the boiler)

H = Automatic By-pass pipe

Supplied By www.heating spares.co Tel. 0161 620 6677

The boiler operates with alternating current, as indicated in the

technical information table in section 7, where the maximum

absorbed power is also indicated. Make sure that the

connections for the neutral and live wires correspond to the

indications in the diagram. The appliance electrical connections

are situated on the reverse of the control panel under the

inspection cover (see the ser vicing manual for fur ther

information)

MPORTANT

In the event that the power supply cord must be changed, replace it with one with the

same specifications. Make the connections to the terminal board located within the

control panel, as follows:

- The yellow-green wire should be connected to the terminal marked with the "

symbol;

- The blue wire should be connected to the terminal marked "N";

- The brown wire should be connected to the terminal marked "L".

Note: The diagrams for the electrical system are indicated in section 2.12.

Warning, this appliance must be earthed.

External wiring to the appliance must be carried out by a competent person and be

in accordance with the current I.E.E. Regulations and applicable local regulations.

The microSYSTEM range of boilers are supplied for connection to a 230 V ~ 50 Hz

supply.

The supply must be fused at 3 A.

The method of connection to the electricity supply must facilitate complete electrical

isolation of the appliance, by the use of a fused double pole isolator having a contact

separation of at least 3 mm in all poles or alternatively, by means of a 3 A fused

three pin plug and unswitched shuttered socket outlet both complying with BS 1363.

The point of connection to the Electricity supply must be readily accessible and

adjacent to the appliance unless the appliance is installed in a bathroom when this

must be sited outside the bathroom (see section 2.2).

The local gas region contractor connects the gas meter to the service pipe.

If the gas supply for the boiler serves other appliances ensure that an adequate

supply is available both to the boiler and the other appliances when they are in use

at the same time.

Pipe work must be of an adequate size. Pipes of a smaller size than the boiler inlet

connection should not be used.

IEW OF THE

. 2.3

OILER

ONNECTIONS