Technical data

Linea

Fig. 31

6.17 MAIN HEAT EXCHANGER fig. 31

Carry out component removal procedure as de-

scribed in 6.4.

Unclip and remove the air chamber cover, gently

pull the cover towards you before lifting and dis-

engaging. Locate and remove the six screws (2)

that secure the front combustion cover, then re-

move the cover. Remove the air chamber side

panels if necessary by unscrewing the securing

screws (3). Disconnect the flow and return con-

nections (4,5) on the heat exchanger. The heat

exchanger can now be withdrawn from the appli-

ance. Replace in the reverse order. Ensure all

seals are in good condition, taking care to en-

sure they are replaced correctly.

6.18 AIR PRESSURE SWITCH fig. 32

Carry out component removal procedure as de-

scribed in 6.4.

Unclip and remove the air chamber cover, gently

pull the cover towards you before lifting and dis-

engaging. Locate and remove the two screws

(2) holding the air pressure switch to the air cham-

ber. Disconnect the electrical connections and sili-

cone tubes (1) attached to the air pressure switch,

noting their positions. Replace in the reverse or-

der. Ensure all seals are in good condition, tak-

ing care to ensure they are replaced correctly

6.19 FLOW RESTRICTOR fig. 33

Carry out the component removal procedure as

described in 6.4.

Slacken the cold water inlet pipe (1) at the DHW

flow switch. Disconnect the cold-water inlet pipe

(2) from the DHW heat exchanger and move it to

the side. Using a small screwdriver, gently ease

the flow restrictor (6) from its seating. Replace in

the reverse order. Ensure all seals are in good

condition, taking care to ensure they are replaced

correctly.

Fig. 32