Water Treatment - Excel HE C24 User Manual

6

WATER TREATMENT

CENTRAL HEATING
The excel HE range of boilers have a copper main heat
exchanger and a stainless steel high efficiency heat
exchanger.
IMPORTANT.
The application of any other treatment to this product
may render the guarantee of Ideal Stelrad Group
invalid.
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. Main heat Exchanger
2. Fan
5. Recuperator
6. Burner
8. Injectors
9. Detection electrode
10. Ignition electrode LH & RH
17. Safety Valve
19. Pump head
20. Divertor valve Actuator
21. Auto air vent valve
25. Casing controls door
12
GENERAL
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. For further
information contact:
Fernox Manufacturing Co. Ltd
Cookson Electronics
Forsyth Road
Sheerwater
Woking
Surrey GU21 5RZ
Tel: +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
26. Controls fascia
27. Knob potentiometer
28. Panel control cover
29. Panel control support
30. Panel user wiring cover
31. Main PCB
33. Pressure gauge
34. Lens clear
35. Expansion PCB
36. Mains switch
40. Ignition unit NAC
41. Air pressure switch
42. Panel front sealing
43. Casing LH side panel
44. Casing RH side panel
45. Casing front panel
46. Casing bottom panel
50. Gas valve
51. Condensate blockage thermistor
52. Overheat thermostat
53. Expansion vessel
56. Combustion chamber insulation
57. Thermistor waterset CH & DHW
58. Plate Heat Exchanger
excel HE -
Installation and Servicing