4 x Set-up and installation
FA ROTEX SC / SCS / HYC - 02/2013
17
4.2.3 Hydraulic connection
1. Only with connection of a HybridCube hot water storage tank
to a ROTEX heat pump:
Ɣ ROTEX Mount the storage tank kit "E-PAC" for the
ROTEX heat pump to the HybridCube hot water storage
tank (see the individual installation and operating instruc-
tions included for the storage tank connection kit).
2. When using circulation brakes, fit them into the pipe
connections on the ROTEX Sanicube / HybridCube.
3. Connect the drain hose to the connector of the safety
overflow (fig. 4-4 to fig. 4-7, item 14) on the hot water storage
tank.
– Use transparent drain hose (draining water must be visi-
ble).
– Connect the drain hose to an adequately dimensioned
waste water installation.
– Drain should not be lockable.
4. Check the water pressure at the cold water connection
(<6 bar).
Î If the pressure in the domestic water supply is greater
then fit a pressure reducer and limit the water pressure to
<6 bar.
5. Create connection of the cold water inlet to the hot water
storage tank (fig. 4-4 to fig. 4-7, item 1).
6. Connect the connections to the hot water distribution network
(fig. 4-4 to fig. 4-7, item 2).
1 Cold water connection
2 Hot water*
3 Storage tank charging flow (via 1st. heat source)*
4 Storage tank charging return (via 1st. heat source)*
7 Heating support flow* (connect to return flow heat generator!)
8 Heating support return flow* (connect to return flow heating!)
9 Pressurised solar - flow
10 Pressurised solar - return flow
11 Drain-back solar - flow (1¼" Outer thread, 1" Internal thread)
12 Storage tank
13 Mount for solar R3 controller / handle
14 Safety overflow connection
15 Drain-back solar - return flow or
Filling and draining connection for storage tank water with valve
insert
16 Filling level indicator
17 Connection for booster heater (R 1½" Internal thread)
19 Sensor immersion sleeve for storage tank temperature sensor
31 Rating plate
AG Outer thread
IG Internal thread
* Recommended accessories (circulation brakes (2 in number),
16 50 70)
Tab. 4 -2 Legend for fig. 4-6 / fig. 4-7
Fig. 4-8 Installation of drain hose at safety overflow
In order to be able to flush out the stainless steel corru-
gated heat exchanger for domestic hot water heating in
the event of bad water quality, install a removal facility
to each of the cold water and hot water connections on
the storage tank (T-piece with draw-off cock).
Above a hardness level of >3 mmol/l we recommend
also fitting a dirty water filter that can be back-flushed
into the cold water connection.
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