REMEHA Selecta, Техническая информация

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Remeha Selecta
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4.6.2 Water treatment
Where system water treatment is required or specified (eg inhibitors), it must be com-
patible for use with an aluminium heat exchanger.
If water treatment is used we recommend only the following products which must be
used in accordance with the manufacturers instructions:
‘Copal  ’ manufactured by: or: Sentinal ‘X100  ’ manufactured by:
Fernox, Cookson Electronics BetzDearborn Ltd
Forsyth Road Sentinal
Sheerwater Foundry Lane
Woking Widnes
Surrey GU21 5RZ
Cheshire WA8 8UD
Tel No: 01483 793200 Tel No: 0151 424 5351
Fax No: 01483 793201 Fax No: 0151 420 5447
Email: sales@fernox.com
Web site: www.fernox.com
For the correct dosage and for further information on water treatment or system clean-
ing we advise direct contact with either of the above companies.
Note: Scale deposits in excess of 5 mm will reduce boiler efficiency and increase the
risk of premature casting failure.
4.6.3 Safety valve discharge
A safety valve is fitted in the boiler and is set as standard to 3 bar.
If the pressure in the boiler becomes too high the pressure is relived by releasing
water outside via the safety valve discharge pipe.
The safety valve discharge pipe
must be at least 15 mm Ø. The discharge should be terminated facing downwards
exterior to the building in a position where discharging water will not create danger or
nuisance but remains in a visible position.
4.6.4 Expansion vessel
An 8 ltre expansion vessel (with the vessel charge set to 0.5 bar) is fitted as standard
within the boiler case and is suitable for use in a heating system with a water content
up to 100 litres, operating at a flow temperature of 80°C, a maximum pressure of 3 bar
and a maximum system static head of 5M above the boiler. If the system water content
is greater than 100 litres, or the system static head above the boiler is greater than
5M, an additional vessel must be installed in the system to allow for the increase in
expansion,
see Table 04.