Functional Description - Honeywell BA298F Notice D'installation

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 Water
Inlet pressure 10,0 bar
Operating pres- 1,5 bar
sure
4. Technical data
Installation position Horizontal with discharge valve
downwards
Max. operating 65°C
temperature
Discharge pipe DN 150
connection
Connection size DN 65 - DN 150
MU1H-1218GE23 R0307
GB
5. Scope of delivery
The backflow preventer consists of:
• Housing
• Inlet and outlet check valves
• Discharge valve
• Three ball valves for the connection of a differential
pressure gauge
6. Options
BA298-... FA =
7. Assembly
7.1 Installations Guidelines
• Install shutoff valves before and after backflow
preventer
• Install in horizontal pipework with the discharge
is higher than
valve downwards
. A
• Ensure good access
which opens
o Simplifies maintenance and inspection
• The installation environment should be protected
against frost and ventilated well
• Where backflow preventers are installed care must
be taken that discharges are safely carried away by
the discharge pipework.
• Do not install in places where flooding can occur
• Install discharge pipework which has adequate
capacity
• Inlet pressure fluctuation, even without water draw
off, can lead to brief operation of the discharge
valve. It is therefore recommended that a pressure
reducing valve be fitted upstream of the backflow
preventer.
• No other unprotected potable water system may be
connected downstream of the back flow preventer.
• Individual connections in the downstream system
are not protected against backflow or back
syphonage. If required, further protective measures
can be installed as necessary to protect individual
parts of the system
• The backflow preventer must be installed so that the
discharge valve is above the surrounding maximum
water table..
6
Standard version, Connection
sizes DN 65 - 150
fflanged connections, PN 10
Use and type of installation according to DIN
EN 1717
Honeywell GmbH