Baxi EcoBlue Advance Heat Quick Start Manual download pdf (Page 27)

7212290 - 02 (08/14) EcoBlue Advance Heat 27

Before Installation 5

5.3.5 Condensate Drain

FAILURE TO INSTALL THE CONDENSATE

DISCHARGE PIPEWORK CORRECTLY WILL AFFECT

THE RELIABLE OPERATION OF THE BOILER.

CAREFUL CONSIDERATION MUST BE GIVEN TO

THE POSSIBILITY OF THE PIPEWORK BEING

SUBJECT TO FREEZING CONDITIONS AND

APPROPRIATE MEASURES TAKEN TO PREVENT

BLOCKAGE. CORRECT INSTALLATION IN

ACCORDANCE WITH THIS SECTION WILL

CONSIDERABLY MINIMISE THE LIKELIHOOD OF

BLOCKAGE AND SUBSEQUENT BOILER LOCK-OUT.

A CONDENSATE DISCHARGE PUMP AND PIPE

‘TRACE HEATING’ ARE AVAILABLE AS

ACCESSORIES - see paragraphs 5.3.5.12 to 5.3.5.15

for further details.

The condensate discharge pipe MUST NOT RISE at

any point along its length. There MUST be a fall of AT

LEAST 2.5° (50mm per metre) along the entire run

EXCEPT when employing a suitable condensate pump

in basement and cellar or similar applications.

The boiler condensate trap incorporates a water seal of

75mm, therefore it is unnecessary to install an

additional air break and trap in the discharge pipework.

1. The condensate outlet will accept 21.5mm (

in) plastic

overflow pipe. It is strongly recommended that this

discharges internally into the household drainage system.

Where this is not possible, discharge into an outside drain is

permissible providing every possible precaution is taken to

prevent freezing.

2. Ensure the discharge of condensate complies with any

national or local regulations in force. BS 6798 & Part H1 of the

Building Regulations give further detailed guidance.

3. The discharge pipe should be run in a proprietary drain pipe

material e.g. PVC, PVC-U, ABS, PVC-C or PP.

4. Metal pipework is NOT suitable for use in condensate

discharge systems.

5. The pipe should be a minimum of 21.5mm diameter and must

be supported using suitably spaced clips of the correct design to

prevent sagging.

6. It is advisable that the full length of condensate pipe is

run internally and preferably be less than 3 metres.

7. Internal runs greater than 3 metres or runs in cold areas

should use 32mm waste pipe.

8. External runs MUST be a MINIMUM of 32mm and fully

insulated with material suitable for external use.

Examples are shown of the following methods of

termination:-

i) to an internal soil & vent pipe

ii) via an internal discharge branch (e.g. sink waste)

downstream of the trap

iii) to a drain or gully

iv) to a purpose made soakaway

v) pumped into an internal discharge branch (e.g.

sink waste) downstream of the trap

vi) pumped into an external soil & vent pipe

vii) to a drain or gully with extended external run &

trace heating

It is strongly recommended to discharge

internally into the household drainage system. If

connecting to a rain water drain, that drain MUST

discharge into a foul drain.

21.5mm

32mm

Insulation

2.5° Minimum fall

i) Termination to an internal soil

and vent pipe

450mm min*

50mm per metre of pipe run

*450mm is applicable to properties up

to 3 storeys.

For multi-storey building installations

consult BS 6798.

Boiler

2.5° Minimum fall

ii) External termination via

internal discharge branch

e.g sink waste - downstream*

Sink

Pipe must terminate

above water level but

below surrounding

surface. Cut end at 45°

50mm per metre

of pipe run

*It is NOT RECOMMENDED to connect upstream

of the sink or other waste water receptacle !

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Baxi EcoBlue Advance Heat Quick Start Manual Page 27

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