BA295I - Water backflow preventer HONEYWELL - Free user manual and instructions

USER MANUAL BA295I HONEYWELL

Keep instructions for later use!

1. Follow the installation instructions.
2. Use the appliance
   according to its intended use
3. in good condition
   with due regard to safety and risk of danger.
4. Note that the appliance is exclusively for use in the applications detailed in these installation instructions. Any other use will not be considered to comply with requirements and would invalidate the warranty.
5. Please take note that any assembly, commissioning, servicing and adjustment work may only be carried out by authorized persons.
6. 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 ① is higher than in zone ②, which in turn is higher than in zone ③. A discharge valve is connected to zone ② which opens at the latest when the differential pressure between zones ① and ② falls to 0.14 bar. The water from zone ② 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 Maximum inlet 10.0 bar

pressure Minimum inlet pressure 1.5 bar

4. Technical data

Installation position Horizontal with discharge valve
Max. operating 65°C
temperature
Discharge pipe DN50 for connection sizes 1/2" - 1"
connection DN70 for connection sizes 11/4" - 2"
Connection size 1/2" - 2"

5. Scope of delivery

The backflow preventer consists of:

Housing
- Integral strainer, mesh size approx. 0.6 mm
- Valve cartridge with integral check valve and discharge valve
- Outlet check valve
- Three ball valves for the connection of a differential pressure gauge
- Discharge connection

6. Options

BA295... A = Standard version with connections

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
• Backflow preventers of this type have an integral strainer which protects the device from the ingress of dirt
• Do not install in places where flooding can occur
• The installation environment should be protected against frost and ventilated well
• Install discharge pipework which has adequate capacity

Use and type of installation according to DIN EN 1717 / installation type 2

7.2 Assembly instructions

1. Thoroughly flush pipework
2. Install backflow preventer

Install in horizontal pipework with discharge connection directed downwards
Note flow direction (indicated by arrow) o Install without tension or bending stresses
- Provide a straight section of pipework of at least five times the nominal valve size after the backflow preventer
3. Attach drain pipe to discharge connection (plastic pipe HT 50)
4. The appliance is ready for use

8. Maintenance

We recommend a planned maintenance contract with an installation company

Maintenance of backflow preventer must be carried out by authorized personnel!

8.1 Inspection

• Frequency: every 6 month (depending on local operating conditions)
• To be carried out by an installation company
  Inspection with a test control unit and maintenance-set (see accessories)

8.1.1 Testing discharge valve

Take note of the instructions of the test control unit TKA295 or TK295

1. Procedure according to instruction of the test control unit TKA295 resp. TK295

Quick test for the discharge valve:

• Lower the inlet pressure o if the discharge valve opens (it drops), the function is o.k.

8.1.2 Testing outlet check valve

Take note of the instructions of the test control unit TKA295 or TK295

1. Procedure according to instruction of the test control unit TKA295 resp. TK295

8.2 Maintenance

We recommend a planned maintenance contract with an installation company

In accordance with DIN EN 1717 a regular maintenance must be taken.

Frequency: every 1-3 years (depending on local operating conditions)

To be carried out by an installation company

8.2.1 Cartridge insert

1. Close shut off valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shut off valve on outlet
4. Remove ball valve

5. Remove cover

6. Replace cartridge insert and lip seal

7. Don't disassemble cartridge insert to individual parts!

8. Reassemble in reverse order o push down the cartridge insert till it snaps in

9. Test function (see chapter inspection)

8.2.2 Check valve

1. Close shut off valve on inlet

2. Release pressure on outlet side (e.g. through water tap)

3. Close shut off valve on outlet

4. Remove ball valve
5. Remove cover
6. Exchange check valve

Check valve will be destroyed after demounting

1. Test function (see chapter inspection)

9. Cleaning

• To be carried out by an installation company
  To be carried out by the operator

If necessary, the cartridge insert can be cleaned.

Do not use any cleaning agents containing solvents or alcohol to clean the plastic parts!

Detergents must not be allowed to enter the environment or the sewerage system!

1. Close shut off valve on inlet
2. Release pressure on outlet side (e.g. through water tap)
3. Close shut off valve on outlet
4. Remove ball valve
5. Remove cover

6. Clean or replace cartridge insert and lip seal

7. Don't disassemble cartridge insert to individual parts!

8. Reassemble in reverse order o push down the cartridge insert till it snaps in

9. Test function (see chapter inspection)

10. Disposal

Stainless steel housing
High-quality synthetic material valve cartridge
- High-quality synthetic material or stainless steel check valves
- Stainless steel ball valves
Seals in NBR and EPDM
- High quality synthetic material discharge connection

11. Troubleshooting

Störung	Ursache	Behebung
Discharge valve opens without apparent reason	Pressure strokes in water supply system	Install a pressure reducing valve upstream the backflow preventer
	Fluctuating inlet pressure	Install a pressure reducing valve upstream the backflow preventer
	Cartridge insert is contaminated	Remove cartridge insert and exchange it
Discharge valve don't close	Deposits on valve seat	Remove cartridge insert and clean or exchange it
	Damaged 'o'ring	Remove cartridge insert and exchange it
	Leaky discharge valve	Remove cartridge insert and clean or exchange it
Flow is to low	Inlet strainer is blocked	Remove strainer and clean it

12. Spare Parts

1 Cartridge insert 1/2" - 1" KE295I-1/2

complete 11/4" - 2" KE295I-11/4

2 Check valve insert 1 / 2'' - 1'' RV295I-1/2

complete 11/4" - 2" RV295I-11/4

13. Accessories

TK295

TKA295

D06F Pressure reducing valve

Noise protected pressure reducing valve with setting scale. Maximum inlet pressure 16 bar, with brass filter bowl 25 bar, outlet pressure range 1.5 - 6.0 bar

A = With clear filter bowl up to 40^ / 16 bar
B = With brass filter bowl up to 70^ / 25 bar

TK295 Test kit

Electronic pressure measuring device with digital indicator, runs by a battery.

With case and accessories, ideal for inspection and maintenance of backflow preventer type BA.

TKA295 Test kit

Analogue pressure measuring device with differential pressure display.

With case and accessories, ideal for inspection and maintenance of backflow preventer type BA.

11/4" - 2" KE295I-11/4

2 Clapet anti-retour 1 / 2 - 1" RV295I-1/2

11/4" - 2" RV295I-11/4

12. Accessoires

D06F Manodétendeur

11/4" - 2" KE295I-11/4

WkBad zaworu 1/2" - 1" RV295I-1/2

Automation and Control Solutions

Honeywell GmbH

Hardhofweg

D-74821 Mosbach

Phone: [phone]

Fax: [phone]

http://europe.hbc.honeywell.com

www.honeywell.com

Manufactured for and on behalf of the

Environmental and Combustion Controls Division of

Honeywell Technologies Sàrl, Ecublens, Route du

Bois 37, Switzerland by its Authorised Representative

Honeywell GmbH

ENOH-1234GE23 R1106

Subject to change