Connection To The Gas System; Electrical Connections - Ferroli Optimax 25 C Instructions For Installation, Use And Maintenance Manual

Optimax 25 C
Water treatment
If treatment is used ferroli limited recommanded only the use of Fernox or Sentinel water treatment
products, which must be used in accordance with the manufactures instructions. for further information
contact:
Fernox Manufacturing Co. LTD.
Cookson Electronics, Forsyth Road
Sheerwater, Woking, surrey, GU21 5RZ
Tel: 0870 8700362
Note - If the boiler is installed in an existing system any unsuitable additives must be removed by tho-
rough cleansing. All systems should be cleansed according to B.S. 7593.
Note - In hard water areas treatment to prevent lime scale may be necessary.
Note - It is important that the correct concentration of the water treatment product is maintained in
accordance with the manufacturers instructions.

2.4 Connection to the gas system

If necessary the local Gas supplier should be consulted, at the installation planning stage, in order to
establish the availability of an adequate supply of gas.
An existing service pipe must not be used whitout prior consultation with the local Gas supplier.
A gas meter can only be connected by the Local Gas supplier, or by a Local Gas suppliers Contractor.
Installation pipes should be fitted in accordance with BS6891.
Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for com-
mercial propane.
Do not use pipes of a smaller size than the combination boiler inlet gas connection (22 mm).
The complete installation must be tested for gas soundness and purged as described in BS689. All
pipework must be adquately supported. An isolating gas valve is provided and should be fitted
on the boiler gas inlet. Please wait 10 minutes when ligthing from cold before checling gas rate.
Gas pressures should be checked after the boiler has operated for 10 minutes to reach thermal
equilibrium. This appliance has no facility to check the burner pressure, a combustion test should
should be carried out instead (see page 26 combustion analyser testing).
The isolation kit shown in Fig. 4 is supplied as standard.

2.5 Electrical Connections

The unit must be installed in conformity with current national and local regulations.
Connection to the electrical grid
The boiler must be connected to a single-phase, 230 Volt-50 Hz electric line.
The unit's electrical safety is only guaranteed when correctly connected to an efficient earthing
system executed according to current safety standards. Have the efficiency and suitability of the
earthing system checked by professionally qualified personnel. The manufacturer is not responsible
for any damage caused by failure to earth the system. Also make sure that the electrical system
is adequate for the maximum power absorbed by the unit, as specified on the boiler dataplate,
in particular ensuring that the cross sectional area of the system's cables is suitable for the power
absorbed by the unit.
The boiler is prewired and provided with a cable for connection to the electricity line. The connections to
the supply must be made with a permanent connection and equipped with a double pole switch which
contacts have a minimum opening of at least 3 mm, and fused at max. 3A between the boiler and the
line. It is important to respect the polarities (LIVE: brown wire / NEUTRAL: blue wire / EARTH: yellow-
green wire) in making connections to the electrical supply.
Sentinel Division
Betz Dearborn LTD
Widnes, Cheshire WA8 8ND
Tel: 0151 424 5351
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