Installation - BWT Duo-DVGW 2 Einbau- Und Bedienungsanleitung

6 Installation

By the operator of the unit
Fit shut-off valves up- and downstream of the unit. The unit can be con-
nected to the water-supply network with commercially available fittings
and stop valves.
We recommend that you connect the unit using flexible hoses, e.g. with
the connection set. Softening units with more than 90 litres of resin per
bottle must have flexible, i.e. not rigid, piping.
A multiblock module can only be installed on Rondomat Duo 2 and 3
models if blended water is to be used (not at a residual hardness of
< 0.1 °d).
If the residual hardness is less than 0.1° d, a GIT multiblock module
can be used.
Please note that there is a separate manual for the Multiblock/GIT Module
and for connection set DN 32/32.
The univalve block 1 / " order no.: 11822 can also be used for Rondomat
1
2
6 models.
Note: Be sure to observe the arrows on the control valve that indicate
the direction of flow.
Units 6 and 10 only
Units 6 and 10 are delivered empty and in unassembled form.
1. Position softening columns (1+2) in a suitable location (see instal-
lation diagram), and remove the central pipes. Note! Do not mix up
central pipes! The length of the central pipe with the distributor is
designed precisely for the softening columns.
Make sure that the softening columns are empty and clean.
2. The distributor at the lower end of the central pipe has an alignment.
There is a counter piece at the bottom of the softener column. Place
the central column with the distributor nozzle alignment downwards
on the counter piece in the softener column. Seal the pipes using
protective caps.
Note! During filling no chips may fall under the distributor nozzle. The
control valve could break while it is being screwed on.
3. Put the filling cone in place and pour in the correct quantity of coarse
chip, followed by fine chip and resin, making sure that they are evenly
distributed around the central pipe. Flush in the last 1 - 2 sacks of ion
exchanger with a disinfectant solution.
Disinfectant solution preparation:
Safety note! Wear disposable gloves when preparing and flushing.
Filling quantity per softening column
Model Coarse Fine chip
chip
6 1 bag 1 bag
= 10 l = 4 l
10 1 bag 1 bag
= 10 l = 7 l
Water meter
12+13
14+15
Fig. 1a
6 g powder for 10 liters of water
Resin Desinf.
solution
4 sacks approx. 40 l
= 100 l
6 sacks approx. 50 l
= 150 l
Mounting plate for Soft-Control screwed
down here
Refill disinfectant solution until it is approx. 2 cm above the resin.
The disinfectant solution must remain in the softening column for 1
hour. The unit may not be started for at least one hour after filling.
4. Clean softening column upper sections and threads of resin. Remove
the protective caps from the middle pipes. Do not pull the pipes upwards.
5. Smear O-rings with high-quality grease (e.g. Vaseline), and screw
the control valve (3) and the adapter (4) on the softening columns,
ensuring a tight fit. The central pipes must engage in the openings
sealed by the O-rings on the control valve and adapter respectively.
Turn the softening column into the connecting position. Pull the O-rings
onto the reinforced hoses (17). Insert the reinforced hoses into the control
valve and adapter and secure each one with two support clamps (18).
Secure the controller mounting-plate
Unscrew two screws on the control valve (see below) and secure the
mounting plate using these screws. Screw the Soft-Control controller
and the transformer onto the mounting plate.
Connect the unit to the local water-supply network
The local hard and soft water pipes should be connected to the input
and output pipes on the unit respectively.
Insert the brine hose (9) into the tapered opening of the brine hose
connection (16) and tighten the coupling ring.
Secure the flushing-water hose (16 x 3) to the flushing-water connec-
tion (10) using hose clamps. Route the hose with a natural incline to
the sewage system connection and secure against sudden pressure-
induced movement.
Fasten a hose (13 x 2) around the overflow (8) of the brine container.
Secure it with hose clamps and route it with an incline to the sewage
system connection (drain). There should be no constriction of the cross
section of either hose.
Please note: The flushing water and overflow hoses must be routed
separately and connected to the sewage water system at least 20 mm
above the highest waste water level (unimpeded drainage).
Make electrical connections (see terminal connection diagram; 8-wire
valve block, numbered cables; salt low, water meter, transformer).
Note: The power supply unit for the control valve is constructed accord-
ing to EN 60335-1. The complete power supply unit must be replaced
in event of damage to the mains cable.
4 1
3 2
EN
16
Solenoid
valves
10
33