Ariston CLAS HE R 12 Installation And Servicing Instructions page 54

MAINTENANCE GUIDE
3.3 MAIN HEAT EXCHANGEUR
Tools
1
Remove the two clips and dis-
connect the two pipes
Disconnect electrical gas valve,
and electrode (detection and
ignition)
2
Pull the heat exchanger towards
you
54
Remove the four screws and
disconnect the gas pipe from the
gas valve
Twist the thermal fuse to remove
Time
0 min
Remove the four screws to free
the heat exchanger