Grohe Grohtherm 3000 Manual Del Usuario página 4

Application
Thermostat mixers are designed for use with hot water
supplied from pressurized 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 water heaters).
All thermostat mixers are adjusted at the factory at a flow
pressure of 45 psi on both sides.
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. operating pressure
Recommended flow pressure
Test pressure
Flow rate: approx. 17 L/min or 4.6 gpm/20 psi
approx. 26 L/min or 6.9 gpm/45 psi
approx. 39 L/min or 10.2 gpm/100 psi
Max. water temperature at hot water inlet
Temperature range adjustable on
the scale marked handle
safety stop
Hot water temperature at supply connection 4 °F higher than
mixed water temperature.
Cold water connection
Hot water connection
Minimum flow rate
At a flow pressure over 72.5 psi it is recommended that a
pressure reducing valve be fitted in the supply line.
Installation
Flush pipes thoroughly.
1. Install S-unions and attach the sleeve together with the
escutcheon, see fold-out page I, Fig. [1].
2. Screw-mount the mixer.
3. Push the sleeve with escutcheon onto the union nut.
4. Open isolating valves (X) and check connections for
watertightness.
5. Screw the escutcheon flush against the wall.
Refer to the dimensional drawing 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).
Adjusting
For 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. Lever out cap (A), see Fig. [3].
3. Remove screw (B).
4. Detach temperature control handle (C).
5. Turn regulating nut (D) until the water temperature has
reached 100 °F.
6. Install temperature control handle (C) so that button (E)
points towards the front, see Fig. [2].
1
English
7. Screw in screw (B), see Fig. [3].
8. Refit cap (A).
Temperature limitation
The safety stop limits the temperature range to 100 °F.
The 100 °F limit can be overridden by pressing the button (E).
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 (F), see Fig. [4].
To adjust the stop, proceed as follows:
1. Close shut-off valve.
2. Lever out cap (G).
3. Remove screw (H) and detach shut-off handle (J).
7.25 psi
4. Remove splined adapter (K) and economy stop (L).
5. Reinstall economy stop (L) in the desired position. For
14.5 psi
adjustment range, see Fig. [5].
145 psi
6. Fit splined adapter (K), see Fig. [4].
14.5 psi - 72.5 psi
7. Fit shut-off handle (J) so that the button (F) points towards
232 psi
the front.
8. Screw in screw (H).
9. Refit cap (G).
176 °F
Prevention of frost damage
When the domestic water system is drained, thermostats must
70 - 115 °F
be drained separately, since non-return valves are installed in
100 °F
the hot and cold water connections. For this purpose, the
mixer must be removed from the wall.
Maintenance
= right
= left
Inspect and clean all parts, replace if necessary and lubricate
1.3 gpm
with special valve grease (Prod. no. 18 012).
Shut off cold and hot water supplies by closing both
isolation valves (X), see fold-out page III fig. [6].
I. Non-return valve (M) or (N), see fold-out page III, Fig. [7].
• Remove connection nipple (O) by turning clockwise (left-
hand thread) using a 12mm allen key.
Install in reverse order.
II. Thermostatic compact cartridge (P), see fold-out page III,
Fig. [8].
• Remove O-ring (R1).
• Loosen screw ring (R) using a 34mm tool.
• If necessary, lever out thermostatic compact cartridge (P)
via recess (P1).
• Remove screw ring (R).
Install in reverse order.
Observe the correct installation position of the
thermostatic compact cartridge (P) and scale ring (S), see
details Fig. [8].
Readjustment is necessary after every maintenance operation
on the thermostatic compact cartridge (see Adjusting).
III. Ceramic headpart (T), see fold-out page III, Fig. [9].
Install in reverse order.
Replacement Parts, see fold-out pages II ( * = special
accessories).
Care
Instructions for care of this faucet will be found in the Limited
Warranty supplement.