Functional Description - Honeywell BA295I 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 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
Medium
Maximum inlet
pressure
Minimum inlet pressure 1.5 bar
4. Technical data
Installation posi- Horizontal with discharge valve
tion downwards
Max. operating 65°C
temperature
Discharge pipe DN50 for connection sizes
connection DN70 for connection sizes 1
Connection size / " - 2"
1
2
MU1H-1234GE23 R1106
is higher than
. A
which opens
Water
10.0 bar
/ " - 1"
1
2
/ " - 2"
1
4
GB
5. 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
• Three ball valves for the connection of a differential
pressure gauge
• Discharge connection
6. Options
BA295-... A = Standard version with connections
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
• Backflow preventers of this type have an integral
strainer which protects the device from the ingress
of dirt
• 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
Use and type of installation according to DIN
EN 1717 / installation type 2
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
3. Attach drain pipe to discharge connection (plastic
pipe HT 50)
4. The appliance is ready for use
6 Honeywell GmbH