Worcester 550CDi Service Manual download pdf (Page 22)

For full technical information on pipe size, insulation

and different condensate pipework methods, please

see Installation, Commissioning and Servicing

Instruction Manual.

All condensing boilers generate condensate discharge

which needs to be piped away from the appliance using a

plastic pipe.

The amount of condensate generated depends on the

efficiency and operating status of the appliance. Depending

on operating temperatures, the appliance will condense in

both heating and hot water modes and may generate up

to 2.7 litres of condensate per hour for the 440CDi and

3.7 litres per hour for the 550CDi Regular.

Condensate termination and route

Greenstar Highflow CDi combi boilers incorporate a

condensate pump which allows condensate to be plumbed

above the boiler, allowing more flexible siting possibilities.

Condensate connection

The condensate pump fills up and periodically discharges

through the flexible condensate pipe between 200mm and

4,500mm from floor level. After this point the condensate

continues down the 22mm rigid pipework to the outlet

using gravity.

•

The flexible plastic pipe can be reduced in length to suit

the installation circumstances. The pipework must follow

one of the options shown opposite.

Never terminate or discharge into any open source,

including: sink, bath, shower, bidet, toilet etc.

Note: any external condensate pipework should be

protected with weather resistant insulation to help

prevent freezing.

Condensate pipework

Max. 4,500mm

Cut off

excess

pipework

Min. 200mm

Condensate pump

The condensate connection on Worcester appliances is in

22mm polypropylene. The pipe should be extended and run

away from the appliance with a constant fall of 3º or

at least 50mm in every metre away from the boiler.

The condensate pipe can terminate into any one of

four areas.

Whilst all of the methods are acceptable it is best practise

to terminate the condensate pipe via an internal waste

system. This will eliminate the need for any external

condensate pipe runs which can be susceptible to freezing

in extreme weather. Best practise is not to run external

condensate pipe any further than 3m. If it is necessary to

run more than 3m externally increase pipe size to 32mm.

Condensate termination and route

External condensate pipework

The Worcester Greenstar Highflow CDi combi appliances

have a condensate pump rather than a siphonic condensate

trap. Rather than the condensate constantly dripping into

the discharge pipe, the condensate is collected in the pump

which releases it in 100ml quantities. This will help prevent

freezing occurring.

Wherever possible the condensate discharge pipework

should be routed and terminated internally. Should this not

be possible, and the only available route is external, the

following conditions should be observed:

•

The pipework length should be kept to a minimum and

the route as vertical as possible

•

Where pipework could be subjected to extreme cold

or wind chill, a weather proof insulation should be

used. Alternatively, the condensate pipework could be

increased to a minimum 32mm.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 43 44

Comments to this Manuals

No comments

Worcester 550CDi Service Manual Page 22

Comments to this Manuals

Related products and manuals for Water heaters & boilers Worcester 550CDi