Maintenance - Grohe 34 274 Handbuch

II. Thermostat-Kompaktkartusche, siehe Klappseite III
Abb. [7].
Montage in umgekehrter Reihenfolge.
Nach jeder Wartung an der Thermostat-Kartusche ist eine
Justierung erforderlich (siehe Justieren).
III. Keramik-Oberteil (R), siehe Klappseite III Abb. [8].
Montage in umgekehrter Reihenfolge.
Ersatzteile, siehe Klappseite II ( * = Sonderzubehör).
Pflege
Die Hinweise zur Pflege dieser Armatur sind der beiliegenden
Pflegeanleitung zu entnehmen.
GB
Safety notes
Protection against scalding
It is recommended that near points of discharge with
particular sensitivity to the outlet temperature
(hospitals, schools, nursing and retirement homes)
thermostatic devices should be installed which can limit the
water temperature to 43 °C. The product includes an
appropriate temperature end stop. It is generally
recommended that the temperature of shower-systems should
not exceed 38 °C in nurseries and specific areas of care
centres. Use Grohtherm Special thermostats with special
handle to facilitate thermal disinfection and appropriate safety
end stop. Applicable standards (e. g. EN 806-2) and technical
regulations for drinking water must be observed.
Application
Thermostatic mixers are designed for hot water supplies from
pressurised storage heaters and offer the highest temperature
accuracy when used in this way. With sufficient power output
(from 18 kW or 250 kcal/min), electric or gas instantaneous
heaters are also suitable.
Thermostats cannot be used in connection with unpressurised
storage heaters.
All thermostats are adjusted in the factory at a flow pressure
of 3 bar on both sides.
Should temperature deviations occur on account of special
installation conditions, the thermostat must be adapted to local
conditions (see Adjusting).
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
Max. water temperature at hot water supply
Recommended max. flow temperature
(energy saving)
Safety stop
Hot water temperature at supply connection
min. 2 °C higher than mixed water temperature
Cold water connection
Hot water connection
Minimum flow rate
If static pressures exceed 5 bar, a pressure-reducing valve
must be installed.
Installation
Flush piping system prior and after installation of fitting
thoroughly (Consider EN 806)!
1. Install S-unions and attach the sleeve together with the
escutcheon, see fold-out page I, Fig. [1].
2. Screw-mount the mixer and test the connections for
watertightness.
3. Push the sleeve with escutcheon onto the union nut.
4. Screw the escutcheon flush against the wall.
Refer to the dimensional drawings on fold-out page I.
The projection can be increased by 30mm with an extension,
see Replacement Parts, fold-out page II, Prod.no.: 46 238.
Reversed connection (hot on right - cold on left).
Replace thermostatic compact cartridge (N), see Replacement
parts, fold-out page II, Prod. no.: 47 175 (1/2").
When using this thermostatic compact cartridge, the Cool
Touch function is no longer available.
Adjusting
Temperature adjustment, see Figs. [2] and [3].
1. Open the shut-off valve and check the temperature of the
water with a thermometer, see Fig. [2].
2. Detach temperature selection handle (A), see Fig. [3].
3. Turn regulating nut (B) until the water temperature has
reached 38 °C.
4. Install temperature selection handle (A) so that button (C)
points towards the front, see Fig. [2].
Temperature limitation
The safety stop limits the temperature range to 38 °C.
The 38 °C limit can be overridden by pressing button (C), see
Fig. [2].
Temperature end stop
If the temperature end stop is at 43 °C, insert accompanying
temperature limiter in temperature selection handle,
see Fig. [3].
Adjusting the economy stop
Volume adjustment, see fold-out page I, Figs. [4] and [5].
• The flow rate is limited by a stop adjusted at the factory.
If a higher flow rate is desired, the stop can be overridden
by pressing the button (D), see Fig. [4].
To adjust the stop, proceed as follows:
1. Close shut-off valve.
2. Detach shut-off handle (E).
0.5 bar
3. Remove screw (F) and remove snap insert (G).
4. Remove splined adapter (H) and economy stop (J).
1 bar
5. Fit economy stop (J) in the desired position. For adjustment
10 bar
range, see Fig. [5].
1 - 5 bar
6. Attach splined adapter (H), see Fig. [4].
16 bar
7. Install snap insert (G) using screw (F).
approx. 26 l/min
8. Fit shut-off handle (E) so that button (D) points towards
80 °C
the front.
60 °C Prevention of frost damage
38 °C
When the domestic water system is drained, the thermostats
must be drained separately since non-return valves are
installed in the hot and cold water connections. For this
purpose, the mixer must be removed from the wall.
right
left

Maintenance

= 5 l/min
Inspect and clean all parts, replace as necessary and lubricate
with special grease.
2