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Removing the main heat

exchanger

Removing the air pressure switch

B029

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

1. Drain the boiler of water;

2. Release the two connection nuts "I" connecting the exchanger to the flow

and return pipes (see fig. 1.18) ;

3. Pull it straight out (see fig. 1.19).

Fig. 1.18

1. Disconnect the electrical connections "K" and silicone pipes "L" from their

connection points (see fig. 1.20) ;

2. Remove screws "J" on the top of the sealed chamber (see fig. 1.21) ;

Use a No. 2 star tip screwdriver to remove the switch from the plate.

Fig. 1.20

Fig. 1.19

Fig. 1.21