Glow-worm Ultracom2 sxi - Manual (Page 12)

0020092785_02 - 05/10 - Glow-worm
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7 Appliance installation
7.1 Scope of delivery
The appliance is delivered in a single carton with a document
pack and fittings.
i The flues package will be ordered according to the
configuration of the installation.
• Please check the contents.
1 4.7
2.1
2
2.2
2.3
2.4
2.5
3
4
4.1
4.2
4.3
4.4
4.5
4.6
Key
1 boiler (x1)
2 Accessories bag (x1)
2.1 Pressure relief valve connecting pipe (x1)
2.2 Connection bag (x1)
- Heating return valve (x1)
- Heating flow valve (x1)
- Gas isolation valve (x1)
2.3 Hanging bracket (x1)
2.5 Seals bag (x1)
- flat seal ½" (x1)
- flat seal ¾" (x5)
2.6 Compression fitting (x1)
3 Wall template (x1)
4 Documents bag (x1)
4.1 Installation and servicing manual (x1)
4.2 flue book (x1)
4.3 Instructions for use (x1)
4.4 Extended guarantee leaflet (x1)
4.5 Guarantee envelope pack (x1)
4.6 Magnetic lighting instruction label (x1)
4.7 Gas conversion label (x1)
7.2 Recommendations before installing
7.2.1 Heating circuit design
3
2
1
4
5
6
7
Key
1 Drain point
2 External bypass (if required)
3 boiler
4 Additional expansion vessel (if required)
5 Heating return circuit
6 Heating flow circuit
General
This boiler is designed to provide central heating from a sealed
water system with a fully indirect cylinder. The pump, expansion
vessel and associated safety devices are all fitted within the
boiler.
Safety valve
The safety valve is an integral part of the boiler and it cannot
be adjusted. The pipe from the safety discharge valve must
discharge safely in accordance with standards.
Expansion vessel
The boiler has an integral expansion vessel with a capacity of 8
litres (1.76 gallons), with a charge pressure of 0.75bar.
i
The heating system volume should be calculated to
ensure that the expansion vessel is suitable, it may
be necessary to add an additional vessel.
- In GB, Guidance on vessel sizing is also given in the current
issue of BS5449 and BS7074 Part 1.
- In IE, current edition of I.S.813 “Domestic Gas Installations”.
INSTALLATION