Warmhaus VIWA 90, Installation And User Manual

21

CP: Min Ø 19 mm 

CP: Min Ø 19 mm 

Drainage and Ventilation Pipe

≥ 100

Figure 2.23

Connection of Condensate Drainage Pipe to 

Internal Soil & Vent Stack

Figure 2.24

Connection of a Condensate Drainage Pipe 

Downstream of a Sink, Basin, Bath or Shower Water Trap to 

Internal Soil Vent Stack

Distance

required in

minimum 

3-storey

building

Bath/s

hower

outlet

Drainage and Ventilation Pipe

Figure 2.32 

Connection of Condensing Water Drainage Pipe to Internal Drainage 

and Ventilation Pipe

CP: Min Ø 19 mm 

CP: Min Ø 19 mm 

Drainage and Ventilation Pipe

≥ 100

Figure 2.23

Connection of Condensate Drainage Pipe to 

Internal Soil & Vent Stack

Figure 2.24

Connection of a Condensate Drainage Pipe 

Downstream of a Sink, Basin, Bath or Shower Water Trap to 

Internal Soil Vent Stack

Distance

required in

minimum 

3-storey

building

Bath/s

hower

outlet

Drainage and Ventilation Pipe

Figure 2.33 

Connection of Condensing Water Drainage Pipe to Bottom Level of 

Interior Bath Outlet Siphon

27

Installation and Servicing

SECTION 2 - INSTALLATION

Open air siphon

Condensing Water Drainage Pump

(see pump manufacturer's detailed instructions)

Min Ø 19 mm 

Internal 

Pipe

75

Min Ø 19 mm 

Internal Pipe

CP: Min Ø 30 mm 

Internal Pipe

Air space

Combined waste

and rainwater

drainage pipe

43 mm 90º 

female/male

elbow

Waterproof

/ Airtight

insulation

68 mm Ø PVCU

Connector

CP: Min Ø 19 mm 

Min Ø 30 mm 

Water and Air insulated

drainage pipe

The maximum

outside pipe length

should be 3 m.

Dip the drainage pipe into the

outer tube by centring at least

25 mm deep.

Pebble

≥ 500

≥ 25

Distance

required in

minimum 3-

storey building

Drainage and Ventilation Pipe

CP: Min Ø 19 mm   

Waterproof /

Airtight insulation

Visible air break

at plug hole

CP: 

Min Ø 19 mm 

Internal 

Pipe 

Sink, basin, 

bath or shower 

with integral

overflow and 

75mm trap

Minimum 30 mm

Internal Pipe 

Waterproof / 

Airtight 

insulation 

≥ 25 Below grate

45º pipe

termination

75

≥ 100

Figure 2.25

Connection of a Condensate Pump Typical 

Method (see manufacturers detailed instructions)

Figure 2.26

Connection of condensate Drainage Pipe to 

External Soil & Vent Stack

Figure 2.27

Connection of a Condensate Drainage Pipe to an 

External Rainwater Downpipe (only combined foul/rainwater 

drain)

Figure 2.29

Connection of a Condensate Drainage Pipe to an 

External Purpose Made Soak Away.

Figure 2.28

Connection of Condensate Drainage Pipe 

Upstream of a Sink, Basin, Bath or Shower Waste Trap to 

External Drain, Gulley or Rainwater Hopper

INS

T

ALL

A

TION

CONDENSATE............ CONT’D

45º cut

drainage pipe

inlet

External air 

siphon

Figure 2.34 

Connection of Condensing Water Drainage Pipe on Exterior Envi-

ronment

27

Installation and Servicing

SECTION 2 - INSTALLATION

Open air siphon

Condensing Water Drainage Pump

(see pump manufacturer's detailed instructions)

Min Ø 19 mm 

Internal 

Pipe

75

Min Ø 19 mm 

Internal Pipe

CP: Min Ø 30 mm 

Internal Pipe

Air space

Combined waste

and rainwater

drainage pipe

43 mm 90º 

female/male

elbow

Waterproof

/ Airtight

insulation

68 mm Ø PVCU

Connector

CP: Min Ø 19 mm 

Min Ø 30 mm 

Water and Air insulated

drainage pipe

The maximum

outside pipe length

should be 3 m.

Dip the drainage pipe into the

outer tube by centring at least

25 mm deep.

Pebble

≥ 500

≥ 25

Distance

required in

minimum 3-

storey building

Drainage and Ventilation Pipe

CP: Min Ø 19 mm   

Waterproof /

Airtight insulation

Visible air break

at plug hole

CP: 

Min Ø 19 mm 

Internal 

Pipe 

Sink, basin, 

bath or shower 

with integral

overflow and 

75mm trap

Minimum 30 mm

Internal Pipe 

Waterproof / 

Airtight 

insulation 

≥ 25 Below grate

45º pipe

termination

75

≥ 100

Figure 2.25

Connection of a Condensate Pump Typical 

Method (see manufacturers detailed instructions)

Figure 2.26

Connection of condensate Drainage Pipe to 

External Soil & Vent Stack

Figure 2.27

Connection of a Condensate Drainage Pipe to an 

External Rainwater Downpipe (only combined foul/rainwater 

drain)

Figure 2.29

Connection of a Condensate Drainage Pipe to an 

External Purpose Made Soak Away.

Figure 2.28

Connection of Condensate Drainage Pipe 

Upstream of a Sink, Basin, Bath or Shower Waste Trap to 

External Drain, Gulley or Rainwater Hopper

INS

T

ALL

A

TION

CONDENSATE............ CONT’D

45º cut

drainage pipe

inlet

External air 

siphon

Figure 2.35   

Typical Connection Method of a Condensing Water Drainage Pump 

(see pump manufacturer's detailed instructions)

27

Installation and Servicing

SECTION 2 - INSTALLATION

Open air siphon

Condensing Water Drainage Pump

(see pump manufacturer's detailed instructions)

Min Ø 19 mm 

Internal 

Pipe

75

Min Ø 19 mm 

Internal Pipe

CP: Min Ø 30 mm 

Internal Pipe

Air space

Combined waste

and rainwater

drainage pipe

43 mm 90º 

female/male

elbow

Waterproof

/ Airtight

insulation

68 mm Ø PVCU

Connector

CP: Min Ø 19 mm 

Min Ø 30 mm 

Water and Air insulated

drainage pipe

The maximum

outside pipe length

should be 3 m.

Dip the drainage pipe into the

outer tube by centring at least

25 mm deep.

Pebble

≥ 500

≥ 25

Distance

required in

minimum 3-

storey building

Drainage and Ventilation Pipe

CP: Min Ø 19 mm   

Waterproof /

Airtight insulation

Visible air break

at plug hole

CP: 

Min Ø 19 mm 

Internal 

Pipe 

Sink, basin, 

bath or shower 

with integral

overflow and 

75mm trap

Minimum 30 mm

Internal Pipe 

Waterproof / 

Airtight 

insulation 

≥ 25 Below grate

45º pipe

termination

75

≥ 100

Figure 2.25

Connection of a Condensate Pump Typical 

Method (see manufacturers detailed instructions)

Figure 2.26

Connection of condensate Drainage Pipe to 

External Soil & Vent Stack

Figure 2.27

Connection of a Condensate Drainage Pipe to an 

External Rainwater Downpipe (only combined foul/rainwater 

drain)

Figure 2.29

Connection of a Condensate Drainage Pipe to an 

External Purpose Made Soak Away.

Figure 2.28

Connection of Condensate Drainage Pipe 

Upstream of a Sink, Basin, Bath or Shower Waste Trap to 

External Drain, Gulley or Rainwater Hopper

INS

T

ALL

A

TION

CONDENSATE............ CONT’D

45º cut

drainage pipe

inlet

External air 

siphon

Figure 2.36   

Connection of Condensation Drainage to Drainage and Ventilation 

Pipe

CP (Condensing Pipe):

 The horizontal pipe connections should be assembled as to have an downwards. Inclination must be minimum 3° as to allow the non-return of condensate 

to the device.

Open this valve and ensure that the pressure in Manometer reaches 

up to 1-1.5 bar and close the Filling Valve by turning it clockwise and 

redischarge the air of radiators with air discharging valves.

The boiler’s safety valve discharge needs to be connected to a 

discharge hopper. Otherwise, the safety valve is activated and the 

manufacturer cannot be held responsible for the water drainage to the 

device’s place.

2.11.3. Discharge of Condensing Water

For discharge of the condensation water generated by the device, it must 

be connected to the waste water network via at least Ø19mm pipes 

which are resistant to acidic condensation water. The connection of the 

device with the waste water network should be made as to prevent the 

liquid contained in the connection system from freezing. Before operating 

the device, make sure that the condensation water has been properly 

drained; then confirm that the siphon is filled with condensation before 

the first operation (Figure 2.10). In addition, it is necessary to pay attention 

to the applicable national and local regulations, in order to carry out the 

instructions for the discharge of waste water.