Controls - IDEAL isar HE24 Installation And Servicing

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6 WATER TREATMENT
CENTRAL HEATING
The isar range of boilers have an ALUMINIUM alloy heat
exchanger.
IMPORTANT.
The application of any other treatment to this product
may render the guarantee of Ideal Stelrad Group.
Ideal Stelrad Group recommend Water Treatment in
accordance with the Benchmark Guidance Notes on
Water Treatment in Central Heating Systems.
If water treatment is used Ideal Stelrad Group recommend
only the use of
FERNOX-COPAL or MB1, GE BETZ SENTINEL X100
or Salamander Corrosion Guard inhibitors and associated
water treatment products, which must be used in accordance
with the manufacturers' instructions.
Notes.
1. It is most important that the correct concentration of the
water treatment products is maintained in accordance with
the manufacturers' instructions.
2. If the boiler is installed in an existing system any unsuitable
additives MUST be removed by thorough cleansing. BS
7593:1992 details the steps necessary to clean a domestic
heating system.
3. In hard water areas, treatment to prevent lime scale may be
necessary - however the use of artificially softened water is
NOT permitted.
4. Under no circumstances should the boiler be fired before
the system has been thoroughly flushed.
7 BOILER ASSEMBLY - Exploded View Legend
1. Front casing panel.
2. Boiler sealing panel.
3. Sump cover.
4. Bottom casing panel.
5. Flue sensing nipple.
6. Return pipe.
8. Flue manifold.
10. Interpanel.
11. Burner.
12. Combustion chamber insulation.
13. Heat exchanger.
14. Injector and housing.
15. Venturi assembly.
16. Fan assembly.
17. Automatic air vent.
18. Gas service cock.
*Note. Two waterset assemblies are used on this appliance, WILO and CP. These units are not interchangeable.
12
INSTALLATION
DOMESTIC HOT WATER
In hard water areas where main water can exceed 200ppm
Total Hardness (as defined by BS 7593:1993 Table 2) a
scale reducing device should be fitted into the boiler cold
supply within the requirements of the local water company.
The use of artificially softened water, however, is not
permitted.
Ideal Stelrad Group recommend the use of Fernox
Qantomat, GE Betz Sentinel Combiguard and Calmag
CalPhos I scale reducing devices, which must be used in
accordance with the manufacturers' instructions.
19. Gas control valve.
20. Fan bracket.
21. Orifice plate.
23. Control thermistor (flow/return)
24. Overheat thermostat.
25. Ignition electrode.
26. Flame detection electrode.
32. Kit - Trap and seal.
35. User control.
36. Primary controls (PCB).
39. Mains switch.
40. Spark generator.
44. Piping frame.
51. Mains connector.
53. Turret gasket kit.
57. CH stub pipe.
For further information contact:
Fernox Manufacturing Co. Ltd
Cookson Electronics
Forsyth Road
Sheerwater
Woking
Surrey GU21 5RZ
+44 (0) 1799 521133
Sentinel Performance Solutions
The Heath Business & Technical Park
Runcorn
Cheshire WA7 4QX
Tel: 0800 389 4670
www.sentinel-solutions.net
Salamander Engineering Ltd
Unit 24 Reddicap Trading Estate
Sutton Coldfield
West Midlands B75 7BU
Tel: +44 (0) 121 3780952
Calmag Ltd.
Unit 4-6, Crown Works
Bradford Road
Sandbeds, Keighley
West Yorkshire BD20 5LN
Tel: +44 (0) 1535 210 320
59. Flow restrictor.
60. DHW inlet/outlet pipe.
61. Pressure relief valve.
62. Expansion vessel.
63. Expansion vessel pipe.
64. Pressure gauge.
65. DHW thermistor.
66. *Diverter valve head.
67. *Diverter valve.
68. *Diverter valve manifold.
69. *Pump (Wilo pump shown).
70. Pump manifold.
71. DHW plate heat exchanger.
75. Control box clamp.
94. Ignition lead.
103. Dry fire thermistor.
isar -
Installation and Servicing