5.3.2 Open the panel
To protect the entire system, we recommend installing a dirt
filter in the return pipe. If the device is connected to an older
heating system, installation is absolutely necessary.
ÿ Install a maintenance tap for filter cleaning immediately
before and after the dirt filter.
device
[1] Compression fitting Ø 28 mm to R 1"
[III] Inlet pressure 1.0 bar
5.3.5 Connection of the safety valve
The following diagram enables a rough estimate to be made as to whether the 15
l heating expansion vessel is sufficient or whether a different or additional
expansion vessel is required (not for underfloor heating).
[V] Inlet pressure 1.3 bar
ÿ Recommendation: Install a service cock [2, 3] (heating circuit connection
accessory) for maintenance and repairs in the flow and return.
5.3.6 Heating water circulation
There must be no non-return valves in the connection
lines of the hot water storage tank.
[3] Maintenance tap (heating return)
[4] Heating circuit connection set with fill and drain valve (accessories)
5.3.3 Connecting the heating water pipe connections
ÿ Fold down the control panel [1].
Heating expansion tank 15 l
[TV] Flow temperature
5.3.7 Connecting an external hot water tank
ÿ Tilt the underside of the paneling of the device forward.
14 | Installation
Inlet pressure 0.5 bar
ÿ In the border area: Determine the exact vessel size according to DIN EN 12828.
remove the connection line of the hot water tank
ÿ If the intersection is to the right of the curve: install an additional expansion
tank.
[II] Inlet pressure 0.75 bar (basic setting)
baby
5.3.4 Checking the size of the expansion vessel (15 l heating expansion
vessel accessory)
A bypass in the heating system is not required.
• The admission pressure of the expansion vessel corresponds to the static
system height above the heater. • maximum operating pressure: 3 bar
[IV] Inlet pressure 1.2 bar
It is not necessary to install an on-site overflow valve, since an overflow valve is
already installed in the device.
NOTE: Boiler damage.
[2] Maintenance tap (heating flow)
The following key data was taken into account for the characteristic curves shown:
[A] Working range of the expansion tank
ÿ Mount the flow pipe with the inserted rubber seal without tension on the
connection for the heating flow [2].
Fig. 16 Dismantling the casing of the device
• 1% water seal in the expansion tank or 20% of the nominal volume in the
expansion tank • Working pressure difference of the safety valve of 0.5 bar,
according to DIN 3320
ÿ Mount the return pipe with the inserted rubber seal to the connection for
the heating return [3] free of stress.
Fig. 18 Characteristic curves of the expansion tank,
[B] Additional expansion tank required
A bypass in the heating system is not required.
ÿ Loosen the fastening screws [2].
ÿ If available: non-return valve from the app
[I]
[VA] System capacity in liters
For a unit with an internal 3-way valve
Fig. 17 Connection of the heating water pipes to the device
ÿ Lift the paneling slightly on the underside and remove [3].
B
A
4
1
3
1
2
50
550 600
1 0 00 15 2
00 25 300 350 400 450 500
VA ( l )
650
80
30
70
40
90
0 05
60
0
6720813052-15.1TD
6720813052-14.1TD
6720818991-9.1TD
2.
2.
3.
1.
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v
(
C)
6720813052 (2016/10)
Cerapur GC9000iW
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Summary of Contents for Cerapur 9000i
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