MU1H-1239GE23 R0
2
10
5
Honeywell GmbH
GB
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 instruc-
tions. Any other use will not be considered to comply
with requirements and would invalidate the
warranty.
4. Please take note that any assembly, commis-
sioning, servicing and adjustment work may only be
carried out by authorized persons.
5. Immediately rectify any malfunctions which may
influence safety.
2. Functional description
BA type backflow preventers are divided into three
pressure zones. The pressure in zone is higher than
in zone , which in turn is higher than in zone . A
discharge valve is connected to zone which opens
at the latest when the differential pressure between
zones and falls to 0.14 bar. The water from zone
discharges to atmosphere. In this way the danger of
back pressure or back syphonage into the supply
network is prevented. The pipework connection is
interrupted and the drinking water network is
protected.
3. Application
Backflow preventers of this type are suitable for the
protection of drinking water systems against back
pressure, back flow and back syphonage.
They are used to protect the temporary water tapping
of standpipes on events or construction sites.
Fluids up to and including liquid category 4 to EN 1717
are protected.
4. Scope of delivery
The backflow preventer consists of:
• Housing
• Integral strainer, mesh size approx. 0.6 mm
• Valve cartridge with integral check valve and
discharge valve
• Outlet check valve
• 3 test sockets
• 2 test sockets (3rd is integrated in the optionally
available blind plug)
• with C-coupling on outlet
• Integral shut-off and check valve on outlet
5. Options
6. Application
7. Technical data
8. Assembly
8.1 Installations Guidelines
• Thoroughly flush pipework before installing the
backflow preventer
• The backflow preventer and the distributor head
must be connected to one another non-detachably
with an - according to the local drinking water stan-
dards - approved glue!
• Directly connected to distributor
• Backflow preventers of this type have an integral
strainer which protects the device from the ingress
of dirt. With highly polluted water a fine filter should
be installed upstream to ensure the correct function
of the device.
• The installation location should be protected against
frost
8.2 Assembly instructions
6. Close shutoff valves
7. Screw backflow preventer in distributor
8. Fit C-coupling and flexible tube
9. The appliance is ready for use
10.Open shutoff valves
Medium
Water
Maximum inlet pressure 10.0 bar
Minimum inlet pressure 1.5 bar
Installation conditions for the safe operation of the
appliance it’s not neccessary
to fullfill any height dimen-
sions
BA295STN-11/2A =Standard version with C-coupling
on outlet
Medium
Water
Inlet pressure
max. 10,0 bar
Inlet pressure
min. 1,5 bar
Installation position
Horizontal with discharge
valve down-wards
Max. operating temperature 65°C
Nominal diameter
1
1
/
2
" / DN40