IDEAL HE15 Installation And Servicing page 42

65 HEAT EXCHANGER REPLACEMENT
Refer also to Frame 10, 'Boiler exploded view'.
1. Refer to Frame 51.
2. Remove boiler front panels and inner sealing panel
refer frames 44 & 45.
3. Remove the outer wall sealing plate (if fitted) and turn
the terminal anticlockwise to unlock the turret bayonet
fixing and pull the terminal to disconnect the boiler
turret from the flue assembly.
4. Fully drain the system
5. Disconnect the gas, water flow & water return union
connections at the pre-piping frame
6. Disconnect the condensate connection at the 'S' trap
and the condensate pump (if fitted)
7. Protect the floor area front of the boiler, remove the
screws fixing the boiler to the pre-piping frame and pull
the boiler forward to clear any kitchen unit obstructions
taking care with the electrical wiring.
8. Remove the fan & venturi assembly (refer to frame 46)
9. Remove burner (refer to frame 47)
10. Remove ignition electrode (frame 55) & detection
electrode (frame 56)
11. HE30 & HE36 models only – Remove the spark
generator (frame 57) and remove the electrical
connections from the flow thermistor (frame 52 and the
overheat thermostat (frame 62)
12. Remove the dry fire thermostat (frame 63)
13. HE15, 18 & 24 only – Remove the rubber plug to gain
screwdriver access to the fixing screw retaining the
heat exchanger bottom right copper pipe bracket and
remove the screw.
14. HE30 &36 only – Unscrew the copper pipe connection
at the top left of the heat exchanger and remove the
pipe by pulling upwards through the rubber grommet.
15. Remove the 4 screws retaining the flue turret and
remove the turret.
16. Remove the 4 screws retaining the flue support
bracket.
17. Remove the 19 screws retaining the rear air box and
remove the box.
18. HE15, 18 & 24 only- Pull the flue elbow bracket slightly
sideways to release the elbow and pull the plastic flue
elbow assembly from its joint.
19. HE30 &36 only- Pull the plastic pipe from its joint.
42
SERVICING
17
18
13
15
19
mexico HE -
14
16
continued . . . .
Installation & Servicing