Grohe 34621 Auto 2000 3/4" Thermostatic Shower Mix Exposed

Product 34621

Auto 2000 3/4"  Shower Mix Exposed

integrated mixed water shut off
Ceramic headpart 3/4", 180° temperature scale handle, with GROHE SafeStop at 38°C
shower outlet 1" top or bottom, built-in non return valves, dirt strainers
S-unions, removable temperature end stop 45°C

Thermostat mixers are designed for hot water supplies 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.
Thermostats cannot be used in conjunction with unpressurized storage heaters (displacement water heaters). All thermostats mixers are adjusted at the factory with a flow pressure of 3 bar on both sides.
If temperature deviations should occur on account of special installation conditions, the thermostat should be adjusted to local conditions (see Adjustment).

Technical data:

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 pessure
34 444 approx. 38 l/min.
34 621 approx. 44 l/min.
34 621 approx. 60 l/min.
Max. water temperature at hot water inlet 80 °C
Recommended max. stored
temperature (energy saving) 60 °C
Safety check 38 °C
Hot water temperature at supply connection
2 °C higher than mixed water temperature
Hot water connection left
Cold water connection right
Minimum rate of flow = 5 l/min

At flow pressures above 5 bar, we recommend installing a pressure reducer in the supply pipe.