Sealed Systems Details - Baxi EcoBlue Advance 13 Heat ErP Installation And Service Manual

Baxi EcoBlue Advance 13, 16, 19, 25, 30 Heat ErP Installation Manual
Fig. 5
If Conditions Require, This System Possible
Fig. 6
Alternative Low Head Installation
Venting
1. A method of venting the system during filling and commissioning is provided by an automatic air vent fitted inside the boiler. The air vent is supplied in the open position.
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5.2.9 Sealed Systems Details

1. SAFETY VALVE - A safety valve complying with the requirements of BS 6750 Part 1 must be fitted close to the boiler on the flow pipe by means of a horizontal or vertically
upward connection with no intervening valve or restrictions and should be positioned to facilitate testing. The valve should be pre-set and non-adjustable to operate at a
pressure of 3 bar (45 Ibf/in2). It must be arranged to discharge any water or steam through a pipe to a safe outlet position.
2. PRESSURE GAUGE - A pressure gauge of minimum range 0-4 bar (0-60 Ibf/in2) with a fill pressure indicator must be fitted to the system, preferably at the same point as
the expansion vessel in an easily visible position.
3. EXPANSION VESSEL - An expansion vessel complying with the requirements of BS 4814 must be fitted to the system by means of a connection close to the inlet side of
the circulating pump in accordance with the manufacturers instructions, the connecting pipe being unrestricted and not less than 15mm (1/2 in) nominal size. The volume of
the vessel should be suitable for the system water content and the nitrogen or air charge pressure should not be less than the system static head (See
4. FILLING POINT - A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent
water loss replacement / refilling. The sealed primary circuits may be filled or replenished by means of a temporary connection between the primary circuit and a supply
pipe provided a "Listed" double check valve or some other no less effective backflow prevention device is permanently connected at the inlet to the circuit and the
temporary connection is removed after use. The filling method adopted must be in accordance with all relevant water supply regulations and use approved equipment. Your
attention is drawn to, for GB: Guidance G24.2 and recommendation R24.2 of the Water Regulations Guide. for IE: the current edition of I.S. 813 "Domestic Gas
Installations".
5. MAKE UP SYSTEM - A method of replacing water lost from the system should be provided either by means of a make up vessel of not more than 3 litres (5 pints) capacity,
mounted above the highest point of the system, or by re-pressurisation of the system.
6. VENTING - A method of venting the system during filling and commissioning is provided by an automatic air vent fitted inside the boiler. The air vent is supplied in the open
position.
7. HOT WATER STORAGE - The hot water storage vessel must be of the indirect coil type. All components used in the system must be suitable for operation at 110°C
(230°F) and at the pressure allowed by the safety valve.
Fig. 7
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Table. 1a).
23/01/2018, 11:44