Removing The Main Heat Exchanger; Removing The Air Pressure Switch - Ariston GENUS 27 PLUS Installation Instructions Manual

1.3.5 Removing the main heat exchanger

1. Drain the boiler of water;
2. Release the connection nut "I" connecting the
exchanger to the flow pipes (see fig. 1.14);
3. Lower the heat exchanger at its front end and lift
forward clear of the ledge at the rear (see fig.
1.15)
4. Pull it straight out.
6
I
Fig. 1.14
Fig. 1.15

1.3.6 Removing the air pressure switch

1. Remove screws "L" on the top of the sealed cham-
ber (see fig. 1.17);
2. Pull upwards the plastic support plug (see fig. 1.18)
3. Disconnect the electrical connections "J" and sili-
cone pipes "K" from their connection points (see fig.
1.16);
Fig. 1.16
J
K
K
L
L
Fig. 1.17
Fig. 1.18