resideo Braukmann BFW112-65AC User Manual

: June 7, 2024
: resideo

Resideo Braukmann BFW112-65AC User Manual

resideo Braukmann BFW112-65AC User Manual - Main
Product

1 Safety Guidelines

Follow the installation instructions.
Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
Note that the appliance is exclusively for use in the applications detailed in these installation instructions (see 2 Technical Data). Any other use will not be considered to comply with requirements and would invalidate the warranty.
Please take note that any assembly, commissioning, servicing and adjustment work may only be carried out by authorized persons.
Immediately rectify any malfunctions which may influence safety.

2 Technical Data

resideo Braukmann BFW112-65AC User Manual - Technical
Data

Note:
The mobile backflow preventer BFW112-65AC in accordance with DIN 14346 is connected to existing standpipes or pillar hydrants to take water for fire fighting from the pipeline network. It prevents water from flowing back into the drinking water supply network as a result of back siphon age or back pressure, if the pressure in this network is lower than that in the pipeline laid for firefighting purposes.

Note:
In addition, pressure surges do not occur in the network, which helps to prevent burst pipes.

3 Options

For Options visit homecomfort.resideo.com/Europe

4 Assembly

4.1 Installation Guidelines

Note flow direction
Use both handles when assembling on hydrant/standpipe
Ensure that parts are free of dirt
Store in a clean and dry place
These armatures need to be maintained regularly

4.2 Assembly instructions

Thoroughly flush hydrant /standpipe
Check that backflow preventer connections are clean
Assemble backflow preventer Position backflow preventer and, using both handles, rotate it and the counter coupling on the hydrant/standpipe to connect Note flow direction (indicated by arrow)

5 Maintenance

In order to comply with DGUV 305-002, annex 1, water fixtures must be inspected and serviced on an annual basis. As all maintenance work must be carried out by an installation company, it is recommended that a servicing contract should be taken out.

5.1 Inspection

The backflow preventer must undergo regular visual inspections every 3 months at the latest. The following must be checked:

State of the coupling
Dirt accumulation
– Stone trap
– Dust and fall protection
– Drainage holes
– Interior workings If dirt has accumulated, clean with clear water without the addition of detergents.
If any parts are damaged carry out a maintenance.

5.2 Maintenance

Do not use any cleansers that contain solvents and/or alcohol for cleaning the plastic parts, because this can cause damage to the plastic components – water damage could result. Detergents must not be allowed to enter the environment or the sewerage system!
Interval: every 12 months See chapter 10 Maintenance Report
Test set-up
Mount the backflow preventer in the testing equipment. Open all the valves, to bleed the system. Close valve 3. Check that the backflow preventer is sealed.

5.2.1 Inspection of check valve on input side

1. Close valve 2
2. Wait 10 seconds and observe the differential pressure. If it is constant, the check valve is airtight. Make a note of the differential pressure If the differential pressure = 0, the seal on the input side is damaged or soiled. Follow the instructions in chapter 5.2.3 Maintenance.

5.2.2 Inspection of discharge valve

Close valve 2
Close valve 1
Slowly open valve 3 and observe the differential
pressure. The discharge valve must respond (begin to drop) before the differential pressure exceeds 0.14 bar. Make a note of the differential pressure at which the discharge valve responds (drops).

If the differential pressure is <0.14 bar at the response moment, follow the instructions in chapter 5.2.3 Maintenance.

5.2.3 Maintenance

Fix the backflow preventer on the key area of the housing and open the cover on the output side by using the coupling spanner for fire fighting fittings (acc. DIN 14822)
Remove the springs and piston
Clean all interior parts and the running surface with clear water and check that they are in good condition.
If necessary, exchange all seals on the piston. When dismantling, ensure that the sealing faces in the base of the groove are not damaged.
Lightly grease the seals.
Reassemble in reverse order.
Carry out points in chapter 5.2.1 Inspection of check valve on input side and chapter 5.2.2 Inspection of discharge valve for inspection.