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Safety notes
Prevent danger resulting from damaged power sup-
ply cables. If damaged, the power supply cable must
be replaced by the manufacturer or his customer
service department or an equally qualified person.
• Installation is only possible in frost-free rooms.
• The optional power supply unit is only suitable for indoor use.
• The plug-in connectors must not be directly or indirectly
sprayed with water when cleaning.
• The voltage supply must be separately switchable.
• The maximum permissible distance between the digital
controller/diverter of the functional unit and the transceiver
is 16.4 ft.
• Use only genuine replacement parts and accessories.
The use of other parts will result in voiding of the warranty.
Application
Thermostatic mixers are designed for hot water supplies from
pressurised storage heaters and offer the highest temperature
accuracy when used in this way. With sufficient power output
(from 18 kW or 250 kcal/min), electric or gas instantaneous
heaters are also suitable.
Thermostats cannot be used in connection with unpressurised
storage heaters.
All thermostats are adjusted in the plant at a flow pressure
of 0.3 MPa (45 psi) on both sides.
Technical data
• Flow pressure
- Minimum flow pressure without downstream
resistances: 0.1 MPa (14.5 psi)
Minimum flow pressure with downstream
resistances: 0.2 MPa (29 psi)
- Recommended 0.2 – 0.5 MPa (29 - 72.5 psi)
• Operating pressure max. 1.0 MPa (145 psi)
• Test pressure 1.6 MPa (232 psi)
If static pressure exceeds 0.5 MPa (72.5 psi) a pressure-
reducing valve must be fitted.
Avoid major pressure differences between hot and cold water
supply.
• Flow rate at 0.3 MPa (45 psi) flow pressure
(with simultaneous use of all outlets): approx. 13.2 gpm
• Minimum flow rate: 1.3 gpm
• Hot water supply temperature: min. 122 °F - max. 176 °F
• Recommended (energy saving): 140 °F
• Hot water temperature at supply connection min. 4 °F higher
than mixed water temperature.
• Ambient temperature: max. 104 °F
• Voltage supply: 120 V AC, 50/60 Hz
• Power consumption: 9 VA
• Radio frequency: 2.4332 GHz
• Transmitter power: < 1 mW
• Digital controller battery:
3x 3 V lithium batteries (type CR 2450)
• Automatic safety shut-off (plant setting):
20 min
• Max. temperature: 108 °F
• Type of protection: - Functional unit IP 40
- Digital controller/diverter IP X5
- Transceiver IP X5
• Water connection: COLD/HOT
Electrical test data
• Software class: B
• Contamination class: 2
• Rated surge voltage: 2,500 V
• Temperature for ball impact test: 212 °F
The test for electromagnetic compatibility (interference
emission test) was performed at the rated voltage and
rated current.
Approval and conformity
This device complies with part 15 of the FCC Rules and with
Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device
must accept any interference received, including interference
that may cause undesired operation.
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.
Electrical installation
Electrical installation work must only be
performed by a qualified electrician and in
accordance with National Electric Code
and/or local requirements!
Rough installation
During installation, please note:
• The functional unit must be accessible for maintenance
work.
• The functional unit must not be installed with the lid facing
downwards.
• A vacant tube must be used to connect the functional unit to
the power supply unit and to the transceiver.
• The plug-in connectors and the transceiver must be
accessible.
Prepare the wall for the installation, refer to the dimensional
drawing on fold-out page I and Figs. [1] to [3] on fold-out
page II.
Install functional unit, see fold-out page II, Figs. [1] to [8].
Observe printing on the lid, see Fig. [4].
1. Prepare holes for the functional unit as well as slots for
the pipes and vacant tubes, see fold-out page II, Figs. [1]
to [3].
2. Unscrew screw (H) and remove lid, see Fig. [4].
3. Align and fasten functional unit in place, see Fig. [5].
4. The cold water supply must be connected to the inlet
marked COLD, the hot water to the inlet marked HOT,
see Fig [6].
GROHE recommends installing isolating valves
upstream of the functional unit to facilitate servicing.
Do not solder the connections.
5. Route the mixed water outlet to the points of discharge; it is
essential that outlet 1 be connected.
6. Seal plug (A) in the unused outlet, see Fig. [6].
7. Route connection cable in vacant tube, see Fig. [7].
Max. two extension cables can be combined (max. 19.7 ft).
8. Route connection cable in vacant tube, see Fig. [8].
Max. one extension cable can be combined.
9. Attach the plug-in connector (B) and (C3) to the power
supply unit and to the functional unit, see Fig. [7] and [8].
Do not connect voltage supply yet.
10. Install transceiver (C) in the inspection chamber or on the
wall and attach the plug-in connector.
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