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grohtherm 3000 cosmopolitan 34408000
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Grohe grohtherm 3000 cosmopolitan 34408000 [5/32] Application

Application

The Concealed System can be used in conjunction with:

• Pressurised storage heaters

• Thermally/hydraulically controlled instantaneous heaters

Operation with unpressurised storage heaters (displacement

water heaters) is not possible.

Use as:

• Bath installation/Shower installation/Central installation

All thermostats are adjusted in the factory at a flow pressure

of 3 bar on both sides.

If the Concealed System is installed as a central thermostat,

standard mixers can be installed at the draw-off points. In this

case, the thermostat mixer supplies hot water to which cold water

can be added.

An additional stopcock is only required if further discharge

points are to be connected via unused outlets.

Technical data

• Flow pressure

- Minimum flow pressure without

downstream resistances 0.5 bar

- Minimum flow pressure with

downstream resistances 1 bar

- Recommended 1 - 5 bar

• Max. operating pressure 10 bar

• Test pressure 16 bar

If static pressure exceeds 5 bar, a pressure

reducing valve must be fitted.

Avoid major pressure differences between

hot and cold water supply.

• Flow rate at 3 bar flow pressure (with concurrent

use of all discharge points) approx. 53 l/min

Note when installing the outlet:

• Minimum flow rate 5 l/min

• Temperature:

Hot water inlet max. 70 °C

Recommended (energy saving) 60 °C

Thermal disinfection possible

• Safety stop 38 °C

• Hot water temperature at supply connection

min. 2 °C higher than mixed water temperature

Prevention of frost damage

When the domestic water system is drained, thermostats must be

drained separately, since non-return valves are installed in the hot

and cold water connections. The complete thermostat assemblies

and non-return valves must be unscrewed and removed.

Note:

In the case of concealed shower mixers with bath filling and

overflow sets, observe the following:

• According to EN1717 an approved safety device is

stipulated. A special accessory can be used for this purpose

(see Replacement parts, fold-out page I, Prod. no.: 29 007).

• The approved safety device must be installed above the

bathtub rim!

Installation

Installation, see fold-out page II Fig. [1].

Refer to the dimensional drawing on fold-out page I.

For different installation options, see the pre-drilled holes

in Fig. [1].

When installing a GROHE Custom Shower system, an

orientation line for further installation boxes must be drawn at

the height of the marking, see detail (B1).

Prepare the holes for the thermostatic mixer and slots

for the pipes.

Install the thermostat using the fitting template,

see Figs. [2] and [3].

• The finished surface of the wall must lie within the area (A)

of the fitting template.

• The hot water supply must be connected on the left and the

cold water supply on the right.

Align the thermostat, see Fig. [1].

Place a spirit level on the cams (B) of the fitting template.

Connect the pipes, see Figs. [2] and [3].

• When installing as bath mixer, the plug (C) provided must be

sealed in the unused outlet (bottom), see Fig. [2].

• When installing as shower mixer, the plug (C) provided must

be sealed in the unused outlets (top and bottom),

see Fig. [2].

• When installing as central mixer, the plug (C) provided must

be sealed in the unused outlet (top), see Fig. [3].

The lower discharge point always requires an additional

stopcock.

A soldered connection is not permissible, as this could

damage the built-in non-return valve.

Open the cold and hot water supply and check the fitting

connections for watertightness.

Rapido T in combination with bath filling and overflow

sets, see Fig. [4] to [6].

Stop waterflow to bath filling and overflow sets during the

installation with attached plug (F):

1. Remove cover (D), see Fig. [4].

2. Unscrew closer plug (E).

3. Fit plug (F) in the outlet for bath filling and overflow sets,

see Fig. [5].

4. Install in screw plug (E), see Fig. [6].

5. Fit cover (D).

Note:

When assembling the detailed installations, the plug (F) must

be removed.

Flush the pipes thoroughly before and after installation

(observe EN 806), see Figs. [7] and [8].

1. Remove the cover (D), see Fig.[7].

2. Close the hot and cold water supply.

3. Remove the screw plug (G).

4. Remove the non-return valve (H) and filter (I).

5. Install the flushing plugs (J) in non-return valve seat

recesses, see Fig. [8].

6. Open the hot and cold water supply and flush the pipes

thoroughly.

7. Close the hot and cold water supply and remove the

flushing plugs (J).

8. Install the filter (I) and non-return valve (H), see Fig. [7].

9. Replace the screw plug (G).

10. Open the cold and hot water supply.

Fit substrate for sealant, see Figs. [9] and [10].

1. Apply sealant or adhesive, see Fig. [9].

2. Remove the centre piece (K1) of the substrate (K) by cutting

through the tabs (K2).

3. Push the substrate (K) over the fitting template.

4. Apply sealant or adhesive again, see Fig. [10].

Plaster and tile the wall, see Fig. [11].

Do not cut the fitting template before final installation.

Replacement parts, see fold-out page I (* = special

accessories).

Grohe grohtherm 3000 cosmopolitan 34408000 [5/32] Application

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