Requirements Of The Feedwater; Operating Pressure; Installation And Assembly - BWT THERO 90PRO Einbau- Und Bedienungsanleitung

EN
Frost protection and ambient temperature:
The installation site must be free of frost and
kept free of chemicals, paint, solvents and
fumes.
If the municipal water supply is treated with
oxidising disinfectants (such as chlorine,
chlorine dioxide, or similar), then an activated
carbon filter must be installed upstream of the
device.
Further pre-treatment may be necessary
depending on the feedwater quality.
Quality of the supply pipeline:
Observe: All materials used in the
permeate area must be corrosion-
resistant.
Electrical interference:
Interference emissions (voltage peaks, high-
frequency electromagnetic fields, spurious and
voltage oscillations, etc.) of the surrounding
electrical installation may not exceed the maxi-
mum values set in the standard EN 61000-6-4.

1.7.2 Requirements of the feedwater

The water fed into the device must be cold
water that conforms to the statutory drinking
water requirements and the quality require-
ments in table 6.
Analysis of the local feedwater:
Any deviation from proper use, such as desal-
ination of feedwater of impermissible quality
(non-drinking water), may result in irreversible
damage to health or property (via microbial
contamination of the RO device, for example).

1.7.3 Operating pressure

For optimal functioning, the device requires a
certain minimum operating pressure. In addi-
tion, the water pressure should not exceed the
maximum permissible pressure.
Observe: The feedwater pressure must
always be between 1.0 and 4.0 bar
(Fig. 3) as measured directly at the RO
unit.
19
4
6
2
8
1
10
Fig. 3: Pressure display of the feedwater.
Attention: If the pressure exceeds
4.0 bar, then a pressure reducing valve
must be installed.
Attention: If the pressure drops below
1.0 bar, then a pressure booster system
must be installed upstream.
• We recommend installing a stop valve at the
infeed side of the device to enable the feed-
water flow to be interrupted for service pur-
poses.
• The operator's installation should use at
least DN 10. Smaller feed pipes may result
in operational stoppage due to insufficient
water pressure or flow rates (e.g. when flush-
ing the reverse osmosis membranes).
• Installing a pressure reducer may reduce the
flow rate.

2 Installation and assembly

Unpacking the RO device:
Remove the device from the packaging and
check that the delivery is complete and
undamaged.
Hydraulic installation:
Observe the general installation regu-
lations for creating water installations
and the general hygiene conditions.
• Read the technical data, operating notes, and
safety notes first and observe them during
installation.
• Use only flexible hoses approved under
DVGW W 543 to connect the device.
• Observe the installation dimensions and bend
radii when installing accessories (such as
hoses, connection sets, etc.).
• The BWT THERO 90PRO device is to be
set up and operated with installed magnet
plates.
• The device may not be rigidly connected to
the water supply network.