Functional Description; Safety Guidelines - Honeywell BA295STN-3/4WH Installation Instruction

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 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
BA295STN-3/4WH = Standard version with threaded
connections 1"
MU1H-1241GE23 R0710
GB
5. Application
Medium
Maximum inlet pressure
Minimum inlet pressure
6. Technical data
Installation position
Max. operating temperature 65 °C
Discharge pipe connection
Nominal diameter
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
is higher than
be installed upstream to ensure the correct function
. A
of the device.
which opens
• 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
5
Water
10.0 bar
1.5 bar
Vertical with discharge
valve downwards
DN50
/ "
3
4
Honeywell GmbH