Maintenance - Honeywell BA295D-3/4WHD 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. Application
Medium Drinking water
Maximum inlet 10.0 bar
pressure
Outlet pressure 1 - 4 bar pre-settable
pre-set to 1.2 bar ± 0,3
Minimum inlet pressure 1.5 bar
3. Technical data
Installation position Vertical with discharge valve
downwards
Max. operating 65 °C
temperature
Minimum pressure drop 1 bar
Discharge pipe DN40
connection
Nominal diameter / "
3
4
4. Scope of delivery
The backflow preventer consists of:
• Upper housing part with pressure reducing valve and test
socket incl. plug
• Adjustment handle pressure reducing valve
• 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 bracket
- Pressure gauge
• Threaded adapter
• Two test sockets (third is integrated in the blind plug of the
optionally available maintenance set WS295STN)
Honeywell GmbH
GB
5. Options
BA295D-3/4WHD = Standard version with pressure reducing
valve in upper housing part, chrome
plated, with discharge pipe connection
inlet with G3/4" (ISO 228-1)
outlet with G1" (ISO 228-1)
1" intenal to 3/4" external thread adapter
included
6. Assembly
6.1. Installations Guidelines
• Direct installation under distributor or water tap 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.
6.2. Assembly instructions
1. Close shutoff valve upstream the valve
2. Direct installation under distributor or water tap with
discharge connection downwards
3. Seal backflow preventer and tap using included seal
bracket
4. Install 1" intenal to 3/4" external thread adapter if neces-
sary and connect hose
5. For inside installation fit discharge pipe connection and
connect to discharge
6. Open shutoff valve upstream the valve
7. Set outlet pressure on pressure gauge
Set outlet pressure min. 1 bar under inlet pressure.

7. Maintenance

We recommend taking out a servicing contract with an
installation firm
7.1. Inspection
Inspection with a test control unit and maintenance-set (see
accessories)
• Frequency: every 6 month (depending on local
operating conditions)
• To be carried out by an installation company
7.1.1. Testing discharge valve
For testing the shutoff valve must be fully open.
Take note of the instructions of the test control unit
TKA295 or TK295
1. Install test adapter on outlet (see maintenance-set)
2. Procedure according to instruction of the test control unit
TKA295 resp. TK295
Quick test for the discharge valve:
• Lower the inlet pressure
- if the discharge valve opens (it drops), the function
is o.k.
6 MU1H-1251GE23 R0916