Safety Guidelines - Honeywell BA295D-1/2AS Installation Instructions Manual

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
which in turn is higher than in zone
connected to zone which opens at the latest when the
differential pressure between zones
bar. The water from zone
check valves close and therefore separate 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
Medium
Maximum inlet pressure
Minimum inlet pressure
4. Technical data
Installation position
Max. operating temperature 65 °C
Discharge pipe connection
Nominal diameter
Honeywell GmbH
is higher than in zone
. A discharge valve is
and drops to 0.14
discharges to atmosphere, both
from zone
Drinking water
10.0 bar
1.5 bar
Vertical with discharge valve
downwards
DN40
/ "
1
2
GB
5. Scope of delivery
The backflow preventer consists of:
• Upper housing part with integrated shutoff facility and test
socket incl. plug
• Complete tested replacement unit with
- rotatable lower housing part with test socket incl. plug
- Strainer (mesh size 0.5 mm)
- Valve cartridge with integral check valve and discharge
valve
- Outlet check valve
- Retaining clip
- Seal brackets
• Threaded adapter
• Two test sockets (third is integrated in the blind plug of the
optionally available maintenance set WS295STN)
6. Options
BA295D-1/2AS = Standard version with R1/2" (ISO 2999)
,
7. Assembly
7.1. Installations Guidelines
• Direct installation to 1/2" wall socket with discharge
connection downwards
• Backflow preventers of this type have an integral strainer
which protects the device from the ingress of dirt. With
highly polluted water a fine filter should be installed upst-
ream to ensure the correct function of the device.
• The installation location should be protected against frost.
For use on outside taps, the backflow preventer has to be
dismounted if there may be danger of frost.
7.2. Assembly instructions
1. Close shutoff valve upstream the valve
2. Install to 1/2" wall socket with discharge connection
downwards
3. Install threaded adapter 1" IG to 3/4" AG if necessary
4. Install discharge connection if necessary
5. Open shutoff valve upstream the valve
5
threaded connection on inlet and G1"
(ISO 228-1) threaded connection on
outlet , 1" IG to 3/4" AG threaded adapter
included
MU1H-1247GE23 R0614