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Grohe Grohtherm 1000 Cosmopolitan Manual

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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 0.1 bar
• Maximum operating pressure 10 bar
• Test pressure 16 bar
If static pressure is greater than 5 bar, fit pressure reducer.
Avoid major pressure differences between cold and hot water
supply.
• Maximum difference between cold- and hot water supply
pressure: 1: 5
• Flow rate at 0.1 bar flow pressure without downstream
restrictor: approx. 5.5 l/min
• Flow rate at 3 bar flow pressure: approx. 42 l/min
• Temperature
-Hot water inlet (maximum): 80 °C
-Recommended (energy saving): 60 °C
-Safety stop: 38 °C
• Water connection cold - right
hot - left
• Minimum flow rate: = 5 l/min
Installation
Flush piping system prior and after installation of fitting
thoroughly (Consider EN 806)!
Install S-unions and screw-mount the mixer, see fold-out
page I, Fig. [1].
Refer to the dimensional drawings on fold-out page I.
The projection can be increased by 20mm with an extension,
see Replacement Parts, fold-out page II, Prod. no. 07 130.
For better fixing into dry-lined walls a mounting frame
can be used (see Replacement Parts, fold-out page II,
Prod. no.: 18 153).
Adjustment
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 38 °C.
6. Install temperature control handle (C) so that button (E)
points towards the front, see Fig. [2].
7. Screw in screw (B), see Fig. [3].
8. Refit cap (A).
Temperature limitation
The safety stop limits the temperature range to 38 °C. The
38°C limit can be overridden by pressing the button (E).
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 (F), see fold-out page III, Fig. [4].
• Remove connection nipple (G) by turning clockwise (left-
hand thread) using a 12mm allen key.
Install in reverse order.
II. Thermostatic compact cartridge (H), see fold-out page III,
Fig. [5].
• Loosen screw ring (J) using a 34mm tool.
• If necessary, lever out thermostatic compact cartridge (H)
via recess (H1).
• Remove screw ring (J).
Install in reverse order.
Observe the correct installation position of the
thermostatic compact cartridge (H), see detail (H2).
Readjustment is necessary after every maintenance operation
on the thermostatic compact cartridge (see Adjusting).
III. Headpart (K), see fold-out page III, Fig. [6].
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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