Grohe Sentosa Installationsanleitung Seite 5

I979421.book : I97942gb.fm Seite 2 Mittwoch, August 25, 1999 4:03 PM
GB
Application
Surface mounted thermostatic mixers are designed for hot water
supply via pressurized storage heater and utilized in this way
provide the best temperature accuracy. With sufficient power
(from 18 kW or 250 kcal/min) electric or gas instantaneous heaters
are suitable.
Thermostats cannot be used in connection with low pressure
storage heaters.
All thermostats are adjusted in the plant at a flow pressure on both
sides of 3 bar.
If temperature deviations should exist due to special installation
conditions, then the thermostat is to be adjusted to the local
conditions (see Adjustment).
Specifications
Minimum flow pressure without downstream resistances
Minimum flow pressure with downstream resistances
Max. working pressure
Recommended flow pressure
Test pressure
Flow rate at 3 bar flow pressure
Max. water temperature at hot water inlet
Recommended max. stored temperature (energy saving)
Safety check
Hot water temperature at supply connection min. 2 °C higher than
mixed water temperature
Hot water connection
Cold water connection
Minimum flow rate
At a flow pressure over 5 bar it is recommended that a pressure
reducing valve be fitted in the supply line.
Installation
Flush pipe lines thoroughly
Install S-unions and screw-mount the mixer, see fig. [1].
In this connection, refer to the dimensional drawing.
The hot water supply must be connected on the left and the cold
water supply on the right as viewed from the operating position.
1. Install the S-unions and sleeve, preassembled with the
escutcheon.
2. Screw-mount the mixer and test the unions for leaks.
3. Push the sleeve with escutcheon onto the union nut.
4. Screw the escutcheon flush against the wall.
The projection can be increased by 30mm with an extension,see
Replacement Parts, fold-out page II, ref. No. 46 238.
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 thermoelement.
Open the shutt-off valve and check the temperature of the water
with a thermometer, see fig. [2].
With the safety stop depressed, turn thermostat knob (C) until the
water temperature reaches 38 °C.
- Unscrew cap (M), see fold-out page II.
- Hold thermostat knob (C) in this position and unscrew and
remove screw (D), see fig. [3].
- Pull off thermostat knob (C) and reinstall in such a way that
the 38 °C mark (◊) on the knob coincides with the mark (E) on
the mixer body.
- Hold thermostat knob (C) and reinstall screw (D), see fig. [3].
- Screw cap back on again.
Reversed union (hot on right - cold on left).
Replace thermoelement (U), see replacement parts fold-out page II,
ref. No. 47 282 (1/2").
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 safet stop.
Shut-off knob (I) operation.
Shut-off knob in central position
Shut-off knob clockwise
Shut-off knob anti-clockwise
[Press button (R)]
Prevention of frost damage
When the domestic water system is drained, thermostat mixers
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.
Maintenance
0.5 bar
1 bar
For maintenance, see figs. [1], [4], [5], [6] and fold-out page II.
10 bar
Shut off hot and cold water supplies.
1 - 5 bar
16 bar
I. Non-return valve
approx. 20 l/min
1. Disassemble mixer in reverse order, see fig. [1].
80 °C
2. Remove dirt strainer (S).
60 °C
3. With a 12mm hexagon socket spanner, remove union nipple (L)
38 °C
by turning clockwise (left-hand thread).
4. Remove non-return valve (T).
Reassemble in the reverse order.
left
right
II. Thermoelement
= 5 l/min
1. Unscrew cap (M).
2. Unscrew and remove (D) and pull off thermostat knob (C).
3. Unscrew and remove adjusting nut (B).
4. Pull off stop ring (A).
5. With a 24mm open-ended spanner, unscrew and remove
thermoelement (U).
Reassemble in the reverse order.
Readjustment is necessary after every maintenance operation on
the thermoelement (see Adjustment).
III. Aquadimmer
1. Unscrew cap (G) and remove screw (H).
2. Remove shut-off knob (I), splined adapter (J) and stop (K).
3. With a 19mm open-ended spanner, unscrew and remove
aquadimmer (V).
Reassemble in the reverse order.
Observe the correct installation position, see fig. [4], [5] and [6].
1. The various pins (F) and (F1) must project into the relevant
apertures in the face, see Fig. [4].
2. Fit stop (K) so that arrow (N) coincides with marking (O) on the
housing, see Fig. [5].
3. Turn isolating valve of the aquadimmer so that face (P) points to
the front, see Fig. [5].
4. Fit splined adapter (J) so that the faces (P) coincides, see
Fig. [6].
5. Fit flow control knob (l), making sure that button (R) faces the
front, , see Fig. [6].
IV. Aerator (13 927) see fold-out page II.
Unscrew aerator and clean.
Inspect and clean all parts, replace if necessary and grease with
special valve grease (ref. No. 18 012).
Use only genuine Grohe replacement parts.
Replacement parts, see fold-out page II ( * = special accessories).
Care
For directions on the care of this thermostat mixer, please refer to
the accompanying Care Instructions.
= closed
= discharge from spout
= discharge from shower
2