Scope Of Supply; Purpose; Filtration; Pressure Reducer (Only E1 Neu Hws) - BWT E1 NEU EHF Einbau- Und Bedienungsanleitung

1. Scope of supply

E1 NEU consisting of:
1 Lever (handle)
2 Cap
3 Connection screw joints and seals
3A Connection screw joints and seals, with a back-
flow preventer on the input side (with control
screw or facility for the connection of an inlet
pressure gauge, only E1 NEU HWS)
4 Supporting core incl. hygienic vault (= filter cup
+ filter element)
5 Back pressure manometer (only E1 NEU HWS)
6 Stopcock/unlocking device
Pressure reducer (only E1 NEU HWS, Fig. 4) con-
sisting of:
7 Spring cap
8 Display for back pressure setting value
9 Locking screw
10 Rotary knob for pressure reducer
11 Pressure reducer element
12 Slide ring
To be ordered separately:
Replacement filter element (in pack of 2)
 Order number DE: 10386 (100 µm)
 Order number AT: 810386 (100 µm)
Filter element change every 6 months!
Or for optimum hygiene: hygienic vault = filter cup
+ filter element + individually packaged lid, Replace-
ment without touching components exposed to water.
 Order number DE: 20393 (100 µm)
 Order number AT: 820393 (100 µm)
Hygienic vault change every 12 months!

2. Purpose

2.1 Filtration

The BWT E1 NEU is intended for the filtration of drin-
king and service water. It protects the water pipes
and the connected water-bearing system components
from functional defects and corrosion damage by for-
eign particles such as rust particles, shavings, sand,
hemp, etc. The filter cannot be used with chemically
treated circulation water, process water and cooling
water for flow cooling. A coarse dirt separator must
be installed upstream for waters with coarse dirt par-
ticles. The filters are not suitable for oils, fats, solvents,
soaps and other lubricating media. Neither are they
suitable for the separation of water-soluble substan-
ces.

2.2 Pressure reducer (only E1 NEU HWS)

The integrated pressure reducer installed downstream
from the filter serves to reduce pressure and regu-
late a desired back pressure, predominantly in the
domestic water supply plant. It keeps the regulated
back pressure almost constant, even when the pre-
pressure fluctuates between, for example, 16 bar
and the set back pressure, e.g. 3 bar. A uniform, not
too high pressure preserves fittings and devices in
the entire domestic water installation, helps to save
up to 50 % of water and minimises noise evolution.
We recommend the installation of a pressure redu-
cer from 4 bar pre-pressure.
Caution: The plant must be set up according to the
installation and operating instructions of the AVB
Water V, Sec. 12.2. by the water supply company
or an installation company entered into the installer
directory of a water supply company.

3. Function

3.1 Filtration
The raw water flows through the raw water inlet
into the filter and then from the outside to the inside
through the filter element to the pure water outlet. The
foreign particles larger than the filter rating are retai-
ned on the outside of the filter fabric. Clean water
enters into the pipeline system.
If as a result of the increasing contamination of the
filter fabric the water pressure decreases perceptib-
ly, the filter element must be replaced. BUT AFTER 6
MONTHS AT THE LATEST!
3.2 Pressure reducer + backflow preventer (only
E1 NEU HWS)
The pressure reducer works according to the prin-
ciple of the relieved single-seat valve. It is controlled
starting from the back pressure via a large-dimen-
sioned membrane and a pressure spring, the ten-
sion and thus the back pressure of which can be
changed with the rotary knob (11). The display (5)
shows the respective back pressure setting value.
The backflow preventer only opens in the direction
of flow when water is removed and is tightly sealed
in idle position or counterpressure.

4. Installation pre-requisites

Heed local installation regulations, general guide-
lines and technical data. Install filters in cold water
pipes upstream from the objects to be protected.
Caution: The installation site must be frostproof and
avoid disruptive influences (e.g. solvent vapours,
heating oil, washing alkalis, all kinds of chemicals,
UV radiation and heat sources above 40 °C).
EN
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