Manual Grohe 34446 Grohtherm 2000 NEW (page 5 of 8) (English, German, French)

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Application

Thermostat mixers are designed for hot water supply via

pressurised storage heaters and, utilised in this way, provide

the best temperature accuracy. With sufficient power output

(from 18 kW or 250 kcal/min), electric or gas instantaneous

heaters are also suitable.

Thermostats cannot be used in conjunction with

non-pressurised storage heaters (displacement water

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).

Specifications

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 approx. 14 l/min

Max. water temperature at hot water supply 80 °C

Recommended max. flow temperature (energy saving) 60 °C

Safety stop 38 °C

Hot water temperature at supply connection min. 2 °C higher

than mixed water temperature

Cold water connection right

Hot water connection left

Minimum flow rate = 5 l/min

If static pressure exceeds 5 bar, a pressure reducing valve

must be fitted.

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.

34 469

5. Install rack, see Fig. [2].

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 (A), 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. [3] and [4].

1. Open the shut-off valve and check the temperature of the

water with a thermometer, see Fig. [3].

2. Lever out cap (B), see Fig. [4].

3. Remove screw (C).

4. Detach temperature control handle (D).

5. Turn regulating nut (E) until the water temperature has

reached 38 °C.

6. Install temperature control handle (D) so that button (F) is at

the top, see Fig. [3].

7. Screw in screw (C), see Fig. [4].

8. Refit cap (B).

Temperature limitation

The safety stop limits the temperature range to 38 °C. The 38 °C

limit can be overridden by pressing the button (F).

Volume adjustment

Adjusting the economy stop, see fold-out page I, Fig. [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 (G)

To adjust the stop, proceed as follows:

1. Close shut-off valve.

2. Lever out cap (H).

3. Remove screw (I) and detach shut-off handle (J).

4. Remove splined adapter (K) and economy stop (L).

5. Reinstall economy stop (L) in the desired position. See

adjustment range.

6. Fit splined adapter (K).

7. Fit shut-off handle (J) so that the button (G) is at top.

8. Screw in screw (I).

9. Refit cap (H).

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

Inspect and clean all parts, replace if necessary and lubricate

with special valve grease.

Shut off the hot and cold water supply.

I. Non-return valve (M), see fold-out page III, Fig. [6].

• Remove connection nipple (N) by turning clockwise (left-hand

thread) using a 12mm allen key.

Install in reverse order.

II. Thermostatic compact cartridge (A), see fold-out page III,

Fig. [7].

Install in reverse order.

Observe the correct installation position of the

thermostatic compact cartridge (A), see detail.

Readjustment is necessary after every maintenance operation

on the thermostatic compact cartridge (see Adjusting).

III. Ceramic headpart (O), see fold-out page III, Fig. [8].

Replacement Parts, see fold-out pages II ( * = special

accessories).

Care

For directions on the care of this fitting, refer to the

accompanying Care Instructions.

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Grohe 34446 Grohtherm 2000 NEW Manual

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