Manual Grohe 34361 Automatic 2000 compact (page 5 of 14) (English, German, Dutch, Danish, French, Italian, Swedish, Spanish, Norwegian)

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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

34 361 approx. 41,5 l/min.

34 364 approx. 29,0 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 pipes thoroughly.

These installation instructions for thermostatic mixers are

applicable both to replacements and new installations.

In the case of a new installation, special accessories must be

ordered, i.e. ref. No. 12 419, 12 400 and 12 407 for a vertical

installation or ref. No. 12 400 and 12 407 for a horizontal

installation.

For Cat. Pos., see fold-out page II.

Install S-unions and outlet elbow.

Screw-mount the mixer securely, see fig. [1].

In this connection, refer to the dimensional drawings on fold-

out page I.

The outlet pipe (C) must be shortened to the appropriate

length.

Thermostatic mixers are assembled at the factory for a vertical

mounting position.

If a horizontal position is required, the mixer must be adapted

as follows, see fig. [2].

1. Remove union connection set (F), screw plug (D) and

cap with screw (E).

2. Reinstall the removed components on the mixer body, offset

about one union in the anticlockwise direction.

Mixer No. 34 364 can be converted to a shower mixer by

means of the outlet nipple (G) supplied, see fig. [3].

1. Remove union connection set (F).

2. Remove cap with screw (E) and install in aperture requiring

to be blanked off.

3. Install outlet nipple (G), supplied, in the mixer.

Test unions for leaks.

Reversed union (hot on right - cold on left).

Replace thermoelement (T), see replacement parts

fold-out page II, ref. No.: 47 282 (1/2”).

Adjusting

Temperature adjustment, see figs. [4] and [5].

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

water with a thermometer, see fig. [4].

With the safety stop depressed, turn temperature control

handle (J) until the water temperature reaches 38 °C, see

figs. [4] and [5].

- Remove cap (H), see fold-out page II.

- Hold temperature control handle (J) in this position and

unscrew and remove screw (I), see fig. [5].

- Pull off temperature control handle (J) and reinstall in such a

way that the 38°C mark on the knob coincides with the

mark (K) on the mixer body.

- Hold temperature control handle (J) and reinstall screw (I).

- Reinstall cap.

Temperature limitation

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

limit can be overridden by pressing the button (J1), see fig. [5].

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

For maintenance, see fold-out page II.

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

1. With a 30mm open-ended spanner, unscrew and remove

mixer from unions.

2. Remove dirt strainer (L).

3. With a 12mm hexagon socket spanner, remove union

nipple (M) by turning clockwise (left-hand thread).

4. Remove non-return valve (N).

II. Thermoelement

1. Remove cap (H).

2. Unscrew and remove (I) and pull off temperature control

handle (J).

3. Unscrew and remove adjusting nut (A).

4. Pull off stop ring (B).

5. With a 24mm open-ended spanner, unscrew and remove

thermoelement (T).

Readjustment is necessary after every maintenance operation

on the thermoelement (see Adjusting).

III. Ceramic headpart

1. Pull off shut-off knob (O) and unscrew and remove

screw (P).

2. Remove snap insert (Q) and guide ring (R).

3. With a 17mm open-ended spanner, unscrew and remove

ceramic headpart (S).

Install in reverse order.

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

accessories).

Care

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

accompanying Care Instructions.

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Grohe 34361 Automatic 2000 compact Manual

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