Functional Description; Maintenance - Honeywell BA195 miniBA Einbauanleitung

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. Application
Medium
Maximum inlet pressure 10.0 bar
Minimum inlet pressure 1.5 bar
4. Technical data
Installation position
Max. operating temperature 65°C
Discharge pipe connection DN 50
Nominal diameter
5. Scope of delivery
The backflow preventer consists of:
• Housing
• Integral strainer, mesh size approx. 0.5 mm
• Valve cartridge with integral check valve and
discharge valve
• Outlet check valve
• Discharge connection
• Check ball valves
MU1H-1233GE23 R0611
is higher than
. A
which opens
Water
Horizontal with discharge
valve downwards
/ "
3
8
GB
6. Options
BA195-3/8E = Standard version with connection
thread
BA195-1/2A = Standard version with tailpieces
connection size
7. Assembly
7.1 Installations Guidelines
• Install shutoff valves before and after backflow
preventer
• Install in horizontal pipework with the discharge
valve downwards
• Ensure good access
o Simplifies maintenance and inspection
• If a fine filter is not installed in the drinking water
system, the installation of a filter with a mesh width
of 100µ m is recommended in front of the backflow
preventer.
• In the case of fluctuating pre-pressure or an input
pressure over 10 bar, we recommend the insertion
of a pressure regulator in front of the backflow
preventer.
• Do not install in places where flooding can occur
• The installation environment should be protected
against frost and ventilated well
• Install discharge pipework which has adequate
capacity
• Thoroughly flush pipework
7.2 Assembly instructions
1. Thoroughly flush pipework
2. Install backflow preventer
• Install in horizontal pipework with discharge connec-
tion directed downwards
• Note flow direction (indicated by arrow)
o Install without tension or bending stresses
• Provide a straight section of pipework of at least five
times the nominal valve size after the backflow
preventer
• Torque check ball valves max. 15
3. Attach drain pipe to discharge connection (plastic
pipe HT 50)
4. The appliance is ready for use

8. Maintenance

We recommend a planned maintenance
contract with an installation company
Maintenance of backflow preventer must be
carried out by authorized personnel!
5
/ " on housing
3
4
/ "
1
2
/ Nm
+2
-5
Honeywell GmbH