2
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.
Thermostat mixers cannot be used in conjunction with low-
pressure storage heaters.
All thermostat mixers are adjusted at the factory with a flow
pressure of 3 bar on both sides.
A stopcock (A) must be installed between the mixed water
outlet of built-in thermostatic mixer without shut-off
device (34 953) and the draw-off point, see Fig. [1].
For an order number index to the various installation components
and handle element for the built-in 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 shut-off device (34 954) only
shuts off the upper outlet. An additional stopcock must be
fitted if the lower outlet is used, see Fig. [2].
Technical Data
• Minimum flow pressure without
downstream resistances
0.5 bar
• Minimum flow pressure with
downstream resistances
1 bar
• Max. operating pressure
10 bar
• Recommended flow pressure
1 - 5 bar
• Test pressure
16 bar
• Flow rate at 3 bar flow pressure
34 953
approx. 37.5 l/min.
• 34 954
approx. 24 l/min.
• Max. water temperature at hot water inlet
80 °C
• Recommended max. flow temperature
60 °C
(for energy saving)
• Safety stop
38 °C
Hot water temperature at supply connection min. 2 °C higher
than mixed water temperature.
• Hot water connection - W - (-H-)
left
• Cold water connection - K - (-C-)
right
• Minimum flow rate
5 l/min
At a flow pressures above 5 bar, we recommend installing a
pressure reducer in the supply pipe.
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.
Preliminary installations
- Prepare wall for mixer.
Drill holes for thermostat mixer and cut slots for pipes.
- Observe the installation depth in accordance with the
instructions given on the mounting template, see Fig. [3].
x= Face of tiles
y = Front face of mounting template
z = Contact point for spirit level
- Align the thermostat horizontally, vertically and parallel to the
wall, see Fig. [4] (place a spirit level on the cams or face of
the mounting template).
- Install built-in thermostat thermostat 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].
- Connecting the pipelines to the thermostat is facilitated by
the left/right threaded nipple already loosely screwed-on on
the cold water side, see Fig. [6].
-
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 a 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.
Checking pipes and thermostatic mixer body for leaks.
Flush pipes thoroughly.
Plaster and tile the wall.
Do
not
remove the fitting template before final installation.
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