MU1H-1241GE23 R0710
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 drops 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. Scope of delivery
The backflow preventer consists of:
• Chromed housing
• Integral strainer, mesh size approx. 0.4 mm
• Valve cartridge with integral check valve and
discharge valve
• Outlet check valve
• 3 test sockets
• Hose connection in 15° off-axis angle to avoid
bending of the hose
4. Options
5. Application
6. Technical data
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. 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. For use on outside garden taps, the backflow
preventer has to be dismounted before the winter.
7.2 Assembly instructions
1. Close shutoff valves
2. Screw backflow preventer in distributor
3. Fit flexible tube
4. The appliance is ready for use
5. Open shutoff valves
BA295STN-3/4WH = Standard version with threaded
connections 1"
Medium
Water
Maximum inlet pressure
10.0 bar
Minimum inlet pressure
1.5 bar
Installation position
Vertical with discharge
valve downwards
Max. operating temperature 65 °C
Discharge pipe connection
DN50
Nominal diameter
3
/
4
"
