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| 5 Preparation |
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TEMPLATE | BOILER TOP | 0170 |
| AIR | 4043S | |
| FIXING POINTS |
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| PRESSURE | CLEAR |
| 7dia. |
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| TUBES | |
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| RED TUBE | TUBES | ||
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| NO. |
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| 3/16dia. PLUG |
| 12x2in. |
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| 7dia. |
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| 3/16dia. PLUG |
| NO. |
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| 12x2in. |
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| 5mm | MOUNTING |
| ELECTRICAL |
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| BRACKET | SECURING |
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| FIXING | CONNECTIONS |
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| SCREWS (3) | Diagram 5.7 | |||
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| POINT(S) |
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BOILER MOUNTING | 5.5 Boiler Preparation | |
BRACKET | ||
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Lift the boiler into position above the boiler mounting bracket, lowering the boiler into position at the same time locating the key hole slots of the boiler on to the securing screws, when located secure the screws, see diagram 5.6.
Diagram 5.6
6 Water and Condensate Connections
6 Water Connections
Make the water connection to the heating system, see diagram 6.1.
The boiler has compression connections with nuts and olives supplied loose in the fittings pack, to accept 28mm outside diameter copper tubing to BS2871.
The 28mm connections can be reduced to 22mm for the Energysaver 40, provided the system resistance does not exceed the chosen pump duty.
The right hand connection is the flow from the boiler.
6.1 Condensate Connection
The condensate drain connection is at the bottom right of the boiler.
The drain ends in a spigot which is suitable for push fit 22mm (3/4in) plastic overflow pipe, for example, Hepworth Polypipe, Uponor, Osma, Orcaster. If using Marley, Terain or Hunter tubing, which is slightly larger, use the silicone sealant provided in the fittings pack to make a leak proof joint to the drain connection on the boiler.
The condensate discharge pipe should have a fall of 21/2o.
It is not necessary to provide air breaks, or traps in the discharge pipe since the boiler has an integral 50mm trap and siphon.
The boiler is fitted with a safety device to prevent the boiler from working if the condensate pipe gets blocked by either ice or debris.
It is, therefore, recommended that any external condensate drain pipe is insulated to prevent it freezing up.
Alternatively, a larger diameter pipe can be used and insulated.
The condensate drain pipe should be checked during any servicing and any debris found removed.
Refer to the British Gas publication “Guidance Notes for the Installation of Domestic Condensing Boiler” for advice on the disposal of boiler condensate.
| UNION NUT | 4037 | |
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28mm O.D. |
| OLIVE |
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COPPER |
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TUBING |
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RETURN | FLUE GAS | FLOW | |
SAMPLE |
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| POINT |
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| WATER CONNECTIONS |
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| Diagram 6.1 | |
221834B | 16 |
