Functional Description - Honeywell BA295STN Notice De Montage

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
in zone , which in turn is higher than in zone
discharge valve is connected to zone
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.
Medium
Maximum inlet pressure 10,0 bar
Minimum inlet pressure 1,5 bar
Installation conditions
MU1H-1231GE23 R1106
is higher than
which opens
Water
for the safe operation of the
appliance it's not neccessary
to fullfill any height dimen-
sions
GB
4. Technical data
Installation position
Max. operating temperature 65°C
Discharge pipe connection DN50
Nominal diameter
5. Scope of delivery
The backflow preventer consists of:
• Housing
• Integral strainer, mesh size approx. 0.4 mm
• Valve cartridge with integral check valve and
discharge valve
• Outlet check valve
• 3 test sockets
• Connection fittings
• Hose connection in 15° off-axis angle to avoid
bending of the hose
• Discharge connection
6. Options
BA295STN-3/4A =
. A
BA295STN-3/4AC12 =Housing chromium plated,
7. Assembly
7.1 Installations Guidelines
• Installation downstream of outlet valve
• Backflow preventers of this type have an integral
strainer which protects the device from the ingress
of dirt
• The installation location should be protected against
frost
7.2 Assembly instructions
1. Close shutoff valves
2. Screw backflow preventer in shutoff valve
3. Fit coupling and flexible tube
4. The appliance is ready for use
5. Open shutoff valves
7
Vertical with discharge
valve downwards
/ "
3
4
Standard version with threaded
connections 1"
connecting thread / "
3
4
Honeywell GmbH