Technical Data - Grohe 34 211 Manual Del Usuario

GB
Application
Thermostat mixers are designed for hot water supplies from
pressurised storage heaters and offer the highest temperature
accuracy when used in this way. Given sufficient output
(min. 18 kW or 250 kcal per min), electric or gas-fired
instantaneous heaters are also suitable.
Thermostat mixers cannot be used in conjunction with low-
pressure storage heaters (displacement heaters).
All thermostat mixers are adjusted at the factory to a flow
pressure of 3 bar on both sides.
A shutoff device (A) must be installed after the mixed water
outlet of concealed thermostatic mixer (34 213), see Fig. [1].
For an order number index to the various installation
components for the concealed mixer, see Fig. [2].
a = Size of union
b = Part
c = Part No.
When this model is used 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.
The built-in thermostat with stop-valve (34 211) only shuts off
the upper outlet. An additional stop valve must be fitted if the
lower outlet is used, see Fig. [2].

Technical Data

Minimum flow pressure without downstream
resistances
Minimum flow pressure with downstream
resistances
Max. operating pressure
Recommended flow pressure
Test pressure
Flow rate at 3 bar flow pressure
34 211
34 213
Max. water temperature at hot water inlet
Recommended max. flow temperature
(for energy saving)
Safety stop
Hot water temperature at supply connection
min. 2 °C higher than mixed water temperature.
Hot water connection - W - (-H-)
Cold water connection - K - (-C-)
Minimum flow rate
At a flow pressure over 5 bar it is recommended that a
pressure reducing valve be fitted in the supply line.
Prevention of frost damage
When the domestic water system is drained, the thermostat
mixers must be drained separately, since non-return valves
are installed in the hot and cold water connections. The
complete thermostat assembly and non-return valves must be
unscrewed and removed.
New installations
- Prepare the wall for the installation.
Drill holes for thermostat mixer and slots for the pipes.
- Observe the installation depth in accordance with the
instructions given on the mounting template, see also
Fig. [3].
x = Face of tiles
y = Front face of mounting template
z = Resting point for spirit level
- Align the mixer horizontally, vertically and parallel to the wall,
see Fig. [4] (place a spirit level on the cams or face of the
mounting template).
- Install concealed thermostat mixer module in wall and
connect pipes, see Fig. [5]. The housing is provided with
pre-drilled holes (B) to facilitate mounting the fitting to the
wall, see Fig. [4].
- Do not solder the connections between the pipes and
housing, otherwise the built-in non-return valves may be
damaged.
- Seal the open outlet with screw plug.
Note!
- The hot water supply must be connected on the left
(marked W (H) on housing) and the cold water supply on
the right (marked K (C) on housing), as viewed from the
operating position.
Test the pipes and concealed thermostat module
connections for leaks.
0.5 bar
Flush pipes thoroughly.
1 bar
10 bar
1. Remove screws (C) and mounting template (D),
1 - 5 bar
see Fig. [6].
16 bar
2. Close the hot and cold water supplies.
3. Remove screw plug (E).
approx. 24 l/min
4. Remove non-return valve (F) and filter (G).
approx. 35 l/min
5. Install flushing plugs (H) in non-return valve seat recesses,
80 °C
see Fig. [7].
60 °C
6. Open the hot and cold water supplies and flush pipes
thoroughly.
38 °C
7. Close the hot and cold water supplies and remove flushing
plugs (H).
8. Install filter (G) and non-return valve (F), see Fig. [6].
left
9. Install screw plug (E).
right
10. Open the hot and cold water supplies.
5 l/min
11. Reinstall mounting template (D).
Plaster and tile the wall, excluding the area occupied by the
mounting template. Seal any apertures in the wall so that they
are watertight to spray water.
• Tiles laid in mortar should be pointed so that the joint is
tapered towards the outside.
• Seal prefabricated walls with a permanently plastic
compound.
Do not remove the fitting template before final installation.
2