Scope Of Supply; Purpose; Filtration; Pressure Reducer (Only E1 Neu Hws) - BWT E1 NEU EHF 3/4 Instrucciones De Instalación Y De Servicio

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5
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3A 3
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4
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Fig. 1 - E1 NEU HWS
Fig. 3 - Hygienic vault (filter cup + filter element) in
the black supporting core
Fig. 5 - E1 NEU HWS
Backview E1 NEU HWS
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Fig. 2 - E1 NEU HWS
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10
8
7
12
11
Fig. 4 - Pressure reducer functional unit only E1 NEU HWS
E1 NEU EHF

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:
For E1 HydroMODUL:
without pressure reducer
- connection module 3/4"
- connection module 1"
- connection module 5/4"
with pressure reducer
- DR connection module 3/4"
- DR connection module 1"
- DR connection module 5/4"
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, Repla-
cement 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 compo-
nents from functional defects and corrosion damage
by foreign 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, sol-
vents, soaps and other lubricating media. Neither
are they suitable for the separation of water-soluble
substances.

2.2 Pressure reducer (only E1 NEU HWS)

The integrated pressure reducer installed down-
stream from the filter serves to reduce pressure
and regulate a desired back pressure, predomi-
nantly in the domestic water supply plant. It keeps
the regulated back pressure almost constant, even
when the pre-pressure fluctuates between, for ex-
ample, 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 installati-
on, helps to save up to 50 % of water and minimises
noise evolution. We recommend the installation of
a pressure reducer 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 com-
pany 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 in-
side through the filter element to the pure water
outlet. The foreign particles larger than the filter ra-
ting are retained 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 per-
ceptibly, 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 cont-
rolled starting from the back pressure via a large-
dimensioned membrane and a pressure spring, the
tension 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.
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