General Safety Information; Purpose Of Use; Function; Installation - BWT D1 Instrucciones De Instalación Y De Servicio

EN

1. General safety information

▪ Use the BWT D1 pressure reducer only:
- for its intended purpose
- in a flawless condition
- in a safety and risk conscious manner
▪ The instructions must be observed.
▪ For use of the pressure reducer, standards DIN EN 806-2 and DIN 1988-200 must
be taken into account and applied. Also observe other national standards and
regulations!
▪ For proper use, it must be ensured that the pressure reducer is used only whe-re
the operating pressure and temperature do not exceed the design criteria on
which the order is based. The manufacturer is not responsible for damage caused
by external forces or other external influences! Hazards to the pressure regulator
emanating from the flow medium and the operating pressure must be prevented
by means of suitable measures.
▪ All work must be carried out by authorised personnel.
▪ Keep this document in a safe place.
▪ Do not clean the plastic parts with alcohol or solvent-containing cleaning agents!
Risk of damage!

2. Purpose of use

The BWT D1 pressure reducer protects water supply systems in single-family and mul-
ti-family homes, commercial and industrial buildings from excessive supply pressure
acc. EN 806-2 and DIN 1988-200. It helps to avoid pressure damage, reduces water
consumption and ensures sound insulation. The D1 is used to reduce pressure and re-
gulates a set back-pressure and keeps it constant, even if the pre-pressure fluctuates
greatly. A uniform and not too high pressure prevents fittings and appliances in the
entire water supply system from damage.
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3. Function

The D1 is a spring-loaded pressure reducer. The force of a setpoint-spring counteracts
a membrane force. If the initial pressure drops due to a water consumption, the
membrane force also decreases and the now greater spring force opens the valve.
On the outlet side, the pressure is increased again until a equilibrium state between
membrane force and spring force is reached.

4. Installation

The pressure reducer, which is factory-set to 3 bar of back pressure (for SP ver-
sion), must be installed in the pipeline without stress. Make sure that the correct
seals are fitted and only suitable tools are used!
It is advisable to maintain to a calming section of 5 x DN and to install shut-off
valves on the admission and back-pressure sides. Also observe other local stan-
dards and regulations.
The direction of flow must match the arrow on the housing.
The installation position is arbitrary.
The pipeline must be carefully flushed through before the pressure reducer is
installed, This ensures that the impurities being carried along by the medium can-
not impair the fault-free function.
The pressure gauge, optionally arranged on the back pressure side, enables the
set back pressure to be checked and is screwed to the threads provided by means
of sealing tape.
Attention!!!
Before the pressure reducer is commissioned, it must be ensured that the two
pressure gauge connections on the housing are sealed by means of pressure gau-
ges or sealing plugs.
EN
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