Honeywell BA298F, Инструкция по установке, Страница: 6 / 22

MU1H-1218GE23 R0307 6 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 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
4. Technical data
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
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
• 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..
Medium Water
Inlet pressure 10,0 bar
Operating pres-
sure 1,5 bar
Installation position Horizontal with discharge valve
downwards
Max. operating
temperature 65°C
Discharge pipe
connection DN 150
Connection size DN 65 - DN 150
BA298-... FA = Standard version, Connection
sizes DN 65 - 150
fflanged connections, PN 10
Use and type of installation according to DIN
EN 1717