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4 - INSTALLATION AND CONNECTIONS
4.4 - Condensate pump draining connection
Use a flexible and/or rigid drain pipe for a minimum slope of 1 cm/m, with a constant gradient along its whole length
and no low points.
Install a siphon measuring at least 5 cm to prevent any discharge of unpleasant gases or odours.
4.5 - Connecting the condensate drain pump (option)
As an option, the condensate drain pump can be supplied connected but not mounted on the unit
Its technical specifications are as follows:
For sizes 2 to 5:
■ Maximum flow of 8.5 l/h for a pumping height of 2 metres and a horizontal pipe length of 5 metres.
■ Maximum flow of 7 l/h for a pumping height of 4 metres and a horizontal pipe length of 5 metres.
The operation points are provided in the table below.
Connect a clear drain pipe (not supplied) with an internal diameter of 6 mm between the pump outlet and the
wastewater pipe. This pipe should not be pinched or touch the unit or any other external component.
Table of actual flow rates for the pump connected to a PVC pipe with an internal diameter of 6 mm.
Discharge
height
1 metre
2 metres
3 metres
4 metres
For sizes 6 and 7:
■ Maximum flow of 16 l/h for a head height of 2 metres and a maximum pipe length of 5 metres.
■ Maximum flow of 15 l/h for a head height of 2 metres and a maximum pipe length of 10 metres.
The operation points are provided in the table below. Connect a clear drain pipe (not supplied) with an internal
diameter of 6 mm between the pump outlet and the wastewater pipe. This pipe should not be pinched or touch the
unit or any other external component.
Table of actual flow rates for the pump connected to a PVC pipe with an internal diameter of 6 mm.
Discharge
height
0 metre
2 metres
4 metres
6 metres
8 metres
10 metres
Under operating conditions outside of the temperature and relative humidity ranges recommended in the "Operating
limit recommendations" section, the discharge pipe must be insulated to prevent the formation of condensation,
which could damage the installation and the pump. We recommend using a flexible transparent PVC type pipe with
internal diameter 6 mm/external diameter 9 mm. It is essential to ensure that the pump connections are sealed. A
clamp can be used for this purpose.
Warning: Make sure that the flow of water to be discharged in the thermal selection is suitable for your
application.
Note: this accessory must always be used with a valve control device, to ensure valve control of the high
safety device when the valve is closed (closure of the condensate drains).
20
Pump performance: Water flow rate in litres per hour (-15% / +20%)
5 metres
10,4
8,5
7,9
7
Pump performance: Water flow rate in litres per hour
5 metres
20
16
11,5
-
-
-
Horizontal length of the discharge pipe
10 metres
9,1
7,8
7,1
6
Total length of the discharge pipe
10 metres
19
15
11
8,5
6
4
20 metres
30 metres
8,3
7
6,3
5,3
20 metres
30 metres
18
14
10,5
7,5
5
3,5
7,3
6,4
5,8
4,9
17
13,5
10
6,5
4
2,5
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