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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
Media
Medium:
Connections/Sizes
Connection size:
Pressure values
Inlet pressure range:
Opening pressure:
Operating temperatures
Max. operating temperature
medium:
Specifications
Installation position:
Min. flow rate:
3
Options
For Options visit homecomfort.resideo.com/europe
4
Assembly
It is necessary during installation to comply with local
requirements, to follow codes of good practice and to follow
the installation instructions.
The installation location should be protected against frost and
be easily accessible
4.1 Installation Guidelines
•
Install shut-off valves
•
Install in horizontal pipework with spring bonnet
directed upwards
•
Ensure good access
– Pressure gauge can be read off easily
– Simplifies maintenance and inspection
Cold drinking water
DN65 - DN200
1.5 bar - 10 bar
0.5 bar
40 °C
Horizontal with spring bonnet
upwards
1 l/min
GB
•
Install a strainer upstream of the mechanical
disconnector
– To protect the mechanical disconnector from dirt
•
If pressure shock is anticipated in the outlet side of the
disconnector, a pressure shock damper or expansion
vessel must be fitted on the system downstream of the
disconnector
•
In order to avoid flooding, it is recommended to
arrange a permanent, professionally dimensioned
wastewater connection
•
These armatures need to be maintained regularly
4.2 Assembly instructions
•
Flush connecting pipework thoroughly before
installation
•
Install the backflow preventer with good accessibility
and with flow in the correct direction
•
Install the backflow preventer only in horizontal
pipework and with the discharge tundish
downwards
•
A clearance of A
backflow preventer for maintenance purposes
DN
65
80
Amin 170
200
•
It is recommended that a Y-strainer (e.g. FY 69) be
fitted upstream to protect the backflow preventer
against coarse dirt
•
Fit shut-off valves and either side of the
backflow preventer
•
Install a small drain cock upstream of the backflow
preventer
•
Connect discharge pipe to discharge tundish
•
If pressure shock is anticipated in the outlet side of the
backflow preventer, a pressure shock damper or
expansion vessel must be fitted on the system down-
stream of the backflow preventer
4.3 Commissioning
As supplied the hydraulically actuated changeover valve is
closed and the backflow preventer is in the shutoff position.
Commissioning should be in the following sequence:
1.
Slowly open shut-off valve
When reaching the minimum inlet pressure the
backflow preventer turns to flow position so that the
complete pipe unit is filled up to the shut-off valve
2.
Check flanged and pipework joints for seal
3.
Slowly open shut-off valve . Fill and vent the
system
4.
After filling or when there's no more water drawn from
the system the differential pressure transmitter
switches over the electrically actuated changeover
valve
so that the backflow preventer turns back to
⑳
shut-off position
4
must be provided above the
min
100
125
150
240
270
320
MU1H-1212GE23 R0420
200
440
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