Glow-worm Ultracom2 cxi - Manual (Page 12)

0020085231_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 2.5
2.6
3
2.4
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)
- Cold water inlet valve (x1)
- Heating flow valve (x1)
- Domestic hot water connection (x1)
- Gas isolation valve (x1)
2.3 Hanging bracket (x1)
2.4 filling loop extensions (x2)
2.5 Seals bag (x1)
- flat seal ½" (x2)
- flat seal ¾" (x5)
- Flat seal for cold water inlet ¾" (x4)
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 Domestic hot water circuit design
Water pressure
The minimum working pressure to obtain the maximum
domestic flow is 1,0 bar.
The maximum working pressure of the domestic hot water
circuit is 10 bar. If the cold water supply pressure exceeds this,
then a pressure-reducing valve must be fitted in the supply to
the boiler.
‘Hard’ water areas
The temperatures within the heat exchanger are limited by the
boiler control system to minimise scale formation within the hot
water pipework. However, in areas where the water is ‘hard’ (i.e.
more than 200 mg/L of calcium carbonate), it is recommended
that the hot water setting is reduced and that a scale reducer
is fitted, refer to the manufacturer’s instructions or consult the
local water company for additional advice.
Domestic water flow rate
The domestic hot water flow has a restrictor, factory fitted,
which reduces the flow to a maximum of:
- 24cxi ► 8 l/min,
- 30cxi ► 10 l/min,
- 35cxi ► 12 l/min.
INSTALLATION