2
GB
Application
Thermostat mixers are designed for hot water supplies from
pressurized storage heaters and offer the highest temperature
accuray 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.
Thermostats cannot be used in conjunction with unpressurized
storage heaters (displacement water heaters).
All thermostats mixers are adjusted at the factory with a flow
pressure of 3 bar on both sides.
If temperature deviations should occur on account of special
installation conditions, the thermostat should be adjusted to local
conditions (see Adjustment).
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 pessure
34 334 / 34 336
approx. 20 l/min.
34 624 / 34 646
approx. 27 l/min.
Max. water temperature at hot water inlet
80
°
C
Recommended max. flow temperature (energy saving)
60
°
C
Safety stop
38
°
C
Hot water temperature at supply connection 2
°
C
higher than mixed water temperature
Hot water connection
left
Cold water connection
right
Minimum rate of flow
= 5 l/min
At flow pressures above 5 bar, we recommend installing a
pressure-reducing valve in the supply pipe.
Installation
Flush pipes thoroughly
Install S-unions ans screw-mount the mixer, see Fig. [1].
For this purpose, refer to the dimensional drawings on fold-out
page I. The hot water supply must be connected on the left, the cold
water supply on the right, as viewed from the operating position.
The projection can be increased by 20mm with an extension, see
fold-out page I (Prod. no. 07 130).
Check connections for leaks.
Reversed connection
(hot on right - cold on left). Replace
thermostatic cartridge (Z), see replacement parts fold-out page I,
Prod. no.: 47 282 (1/2”).
Adjustment
For temperature-adjustment,
see Figs. [2] and [3]
•
Before the mixer is put into service, if the mixed water
temperature measured at the point of discharge varies from the
specified temperature set on the thermostat.
•
After any maintenance operation on the thermostatic cartridge.
Open the shut-off valve and check the temperature of the water
with a thermometer, see Fig. [2].
With the safety stop depressed, turn temperature control handle (E)
until the water temperature reaches 38
°
C.
- Hold temperature control handle (E) in this position and unscrew
and remove screw (G).
- Pull off temperature control handle (E) and reinstall in such a way
that the 38
°
C mark on the handle coincides with the mark (W) on
the mixer body.
- Hold temperature control handle (E) and reinstall screw (G),
see Fig. [3].
Temperature limitation
The safety stop limits the temperature range to 38
°
C.
If a higher temperature is desired, the 38
°
C limit can be overridden
by depressing the safety stop.
Temperature end stop
for 45
°
C for additional assembly available
under Prod. no. 05 657, see fold-out page I.
Prevention of frost damage
When the domestic water system is drained, thermostat mixers
must be draind 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.
Check function of automatic diverter (R) of bath mixer 34 334
and 34 336,
see also Fig. [4].
The water supply is turned on by opening the shut-off valve.
The water will always emerge from the bath outlet first of all. Pulling
the diverter (R) closes the water passage to the bath and the water
is diverted to the shower outlet.
When the mixer is turned off, the diverter is automatically reset to its
starting condition, with the result that the water always flows out of
the bath tap when the mixer is turned on again.
In addition, the diverter assembly can be secured manually
(advantageous at pressures below 0.5 bar or at low rates of
discharge). In this case, pull the diverter knob of the diverter
assembly (R) and turn it anti-clockwise, see also Fig. [5].
Maintenance
For maintenance,
see fold-out page I and Figs. [6] and [7].
Shut off hot and cold water supplies.
I. Non-return valve
1. With a 30mm open-ended spanner, unscrew and remove mixer
from unions.
2. Remove dirt strainer (U).
3. With a 12mm allen key, remove union nipple (S) by turning
clockwise (left-hand thread).
4. Remove non-return valve (V).
Reassemble in the reverse order.
II. Thermostatic cartridge
1. Unscrew and remove (G) and pull off thermostatic cartridge (E).
2. Unscrew and remove regulating nut (B).
3. Pull off stop ring (A).
4. With a 24mm open-ended spanner, unscrew and remove
thermostatic cartridge (Z).
Reassemble in the reverse order. In doing so, ensure that the stop
ring (A) is installed in its original position [groove (P) offset by 45
°
],
see Fig. [6].
Readjustment is necessary after every maintenance operation on
the thermostatic cartridge (see Adjustment).
III. Ceramic headpart
1. Remove shut-off handle (F).
2. Remove screw (D) and snap insert (H).
3. With a 17mm open-ended spanner, unscrew and remove
ceramic headpart (Y).
Reassemble in the reverse order.
IV. Diverter assembly
, see Fig. [7].
1. Unscrew and remove cap (N).
2. With an open-ended 7mm spanner, unscrew and remove nut (O)
and remove diverter knob (I).
3. With an open-ended 13mm spanner, remove headpart (J) and
remove spring (T).
4. Pull off lock washer (K) from diverter spindle (L).
5. With a 12mm socket spanner, remove outlet nipple (M).
Reassemble in the reverse order.
V.
Unscrew and clean
aerator (13 927),
see fold-out page I.
Inspect and clean all parts, replace if necessary and lubricate with
special valve grease (Prod. no. 18 012).
Replacement parts
, see fold-out page I ( * = special accessories).
Care
For directions on the care of this thermostat mixer, please refer to
the accompanying Care Instructions.
