GB
4
MU1H-1252GE23 R0720
1
Safety Guidelines
1.
Follow the installation instructions.
2.
Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
3.
Note that the appliance is exclusively for use in the
applications detailed in these installation instructions
(see 2 Technical Data). Any other use will not be
considered to comply with requirements and would
invalidate the warranty.
4.
Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried
out by authorized persons.
5.
Immediately rectify any malfunctions which may
influence safety.
2
Technical Data
3
Options
For Options visit homecomfort.resideo.com/europe
4
Assembly
4.1 Installation Guidelines
•
Install shut-off valves before and after backflow
preventer
•
Install in horizontal pipework with the discharge valve
downwards
•
Ensure good access
– Simplifies maintenance and inspection
•
If a fine filter is not installed in the drinking water
system, the installation of a filter with a mesh width of
100
μ
m is recommended in front of the backflow
preventer
•
In case of inlet-pressure fluctuations or a inlet
pressure over 10 bar, we recommend to install a
pressure reducing valve upstream of the backflow
preventer
•
Do not install in places where flooding can occur
•
The installation environment should be protected
against frost and ventilated well. Do not install in the
presence of toxic gases, vapors or dust
•
Install discharge pipework which has adequate
capacity
Use and type of installation according to EN 1717
4.2 Assembly instructions
1.
Thoroughly flush pipework
2.
Install backflow preventer
• Install in horizontal pipework with discharge
connection directed downwards
• Note flow direction (indicated by arrow)
• Install without tension or bending stresses
3.
Provide a straight section of pipework of at least five
times the nominal valve size after the backflow
preventer
4.
Attach drain pipe to discharge connection (plastic pipe
HT 50, HT 70)
5.
The appliance is ready for use
5
Maintenance
In order to comply with EN 806-5, water fixtures must
be inspected and serviced on an annual basis.
As all maintenance work must be carried out by an
installation company, it is recommended that a
servicing contract should be taken out.
In accordance with EN 806-5, the following measures must
be taken:
5.1 Inspection - acc. EN806-5
Inspection with a test control unit and maintenance-
set
Test with test kit
5.1.1 Testing discharge valve
1.
Procedure according to local requirements
Quick test for the discharge valve:
•
Lower the inlet pressure
– if the discharge valve opens (it drops), the function
is o.k.
5.1.2 Testing outlet check valve
1.
Procedure according to local requirements
Media
Medium: Drinking
water
Connections/Sizes
Connection size:
1
/
2
" - 2"
Discharge pipe connection: DN50 for connection sizes
1
/
2
" - 1
1
/
4
"
DN70 for connection sizes 1
1
/
2
" - 2"
Pressure values
Inlet pressure:
1.5 bar - 10 bar
Operating temperatures
Max. operating temperature
medium:
65 °C
Specifications
Installation position:
Horizontal with discharge
valve downwards
