IDEAL LOGIC + Combi 24 User Manual

52
SERVICING
Ideal Logic + Combi - Installation and Servicing
14
11
12
10
70 HEAT ENGINE RENEWAL
Refer also to Frame 6 - ‘Boiler Exploded View’
IMPORTANT
Before starting the removal procedure, protect the gas and
electrical controls with a waterproof sheet or plastic bag.
1. Refer to Frame 45.
2. Drain the boiler. Refer to Frame 59.
3. Remove the fan / venturi assembly and place on one side.
Refer to frame 46.
4. Remove the burner and place on one side. Refer to Frame
48.
5. Remove the ignition and detection electrodes and divertor
actuator head. Refer to Frames 50, 51 and 54.
6. Remove the spark generator. Refer to Frame 52.
7. Remove the gas valve. Refer to Frame 53.
8. Remove the expansion vessel. Refer to Frame 71.
9. Remove the ow thermistor. Refer to Frame 69.
10. Remove the 2 M5 screws retaining the gas valve mounting
bracket and transfer bracket to the new heat exchanger.
11. Undo the inlet pipe union nut and remove the retaining spring
clip and remove pipe.
12. Undo the ow pipe union nut and remove pipe.
13.
Remove the condensate rubber pipe. Refer to Frame 55, no. 2.
14. Remove the two heat exchanger xing screws.
15. Remove the Heat exchanger.
16. Reassemble in reverse order, ensuring the heat exchanger
LH retaining bracket is correctly positioned. Replace any
new ‘o’ rings supplied with new heat exchanger and replacing
gaskets or seals if any sign of damage is evident. When
replacing the spring clips located on both the ow and return
pipe connections, ensure clip is oriented to correctly match
connecting pipe diameters.
17. Ensure the trap/siphon is lled with water. Refer to
Frame 55.
18. Rell the boiler. Refer to Frame 24.
19. Check operation of the boiler. Refer to Frames 32-36.
1. Refer to Frame 45.
2. Drain down the boiler. Refer to Frame 59.
3. Unplug the electrical lead.
4. Unscrew the thermistor (to facilitate removal a
13mm socket spanner should be used).
5. Fit the new thermistor using the sealing washer
provided.
6. Reassemble in the reverse order.
7. Rell the boiler. Refer to Frame 24.
8. Check the operation of the boiler. Refer to Frames
32-36.
69 FLOW THERMISTOR REPLACEMENT
4
3
SERVICING

IDEAL LOGIC + Combi 24 Specifications

General

Model	LOGIC + Combi 24
Category	Boiler
Boiler Type	Combi
Fuel Type	Natural Gas
Output	24 kW
Efficiency	94%
Dimensions	700 x 395 x 278 mm
Warranty	7 years
Max Working Pressure	3 bar
Central Heating Flow Temperature Range	30 - 80 °C