Honeywell BA295S, Руководство по установке, Страница: 6 / 30

Honeywell GmbH 6 MU1H-1252GE23 R1015
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 appli-
cations detailed in these installation instructions. Any
other use will not be considered to comply with require-
ments and would invalidate the warranty.
4. Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried out by
authorized persons.
5. Immediately rectify any malfunctions which may influence
safety.
2. Description of function
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  drops to 0.14
bar. The water from zone  discharges to atmosphere, both
check valves close and therefore separate zone  from zone
 and  . In this way the danger of back pressure or back
syphonage into the supply network is prevented. The pipe-
work 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
• Integrated strainer, mesh size approx. 0.2 mm
• Valve cartridge with integrated check valve and discharge
valve
• Outlet check valve
• Three ball valves for the connection of a differential pres-
sure gauge
• Connection fittings
• Discharge connection
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
- 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. Do not install in polluted atmos-
phere, for example toxic vapor, aerosol, gas or dust
• Install discharge pipework which has adequate capacity
^
The factory-set position of the ball valves may not be
altered. Non-compliance with this instruction will make
any warranty claims null and void.
Medium Water
Maximum inlet
pressure 10.0 bar
Minimum inlet pressure 1.5 bar
Installation position Horizontal with discharge valve down-
wards
Max. operating
temperature 65 °C (WRAS 60 °C)
Discharge pipe
connection DN50 for connection sizes
1
/
2
" - 1
1
/
4
"
DN70 for connection sizes 1
1
/
2
" - 2"
Connection size
1
/
2
" - 2"
BA295S-... A = Standard version acc. EN12729 with
threaded connections
1
/
2
" - 2"
BA295S-1B = Special version with threaded
connections 1"
BA295S-... AGB = Standard version acc. EN12729, all
materials acc. WRAS, with threaded
connections 1/2" - 2"
Use and type of installation according to EN 1717