Vaillant geoTHERM SERIES Installation And Servicing page 21

Key
1 Heat pump
2 Power supply and electrical protection for the heat pump (*)
3 Power supply and electrical protection for the DHW installation (*)
4 DHW time controller (optionnal) (*)
5 Relay mounting box (***)
5.1 Timer relay (connections terminals TR1 to TR6 depending on timer
relay datasheet) (***)
5.2 Auxilary power relay (connections terminals AR1 to AR6 depending
on Power relay datasheet) (***)
6 auroSTOR domestic water tank (**)
6.1 Electrical booster element
6.2 Cylinder Thermostat with integrated thermal cut out
6.3 Immersion heater with thermostat and intégrated thermal cut out
7 Command unit for the heat pump
8 Shut-off valve (*)
9 Differential bypass (*)
10 Expansion vessel (*) (if necessary)
11 Anti-sludge filter (*)
12 Safety valve (*)
13 Pressure-gauge (*)
14 3-channel valve (with return spring) for the domestic hot water tank,
L10 = domestic hot water position (*)
A flow heat pump circuit
b Return heat pump circuit
C flow domestic hot water
D Domestic cold water inlet
E Return heating circuit
f flow heating circuit
G Connection for filling heat pump circuit
H Discharge from the safety valve to a container for recovering glycol
water solution
(*) Not delivered with the appliance
(**) To find out the description of each auroSTOR components, see the
auroSTOR manual.
(***) for technical detail about these components see chapter " Hot
domestic water controller function and components description"
Application conditions in heating mode
- Command unit used as room thermostat (see the chapter
"Appliance location"),
- Installation with underfloor heating (< 53°C) or low-
temperature radiator (<60°C),
- A single zone for regulating heating.
- Minimum volume and flow of water for the installation (the
addition of a buffer tank is necessary if the volume of the
installation is less than the volume indicated in the table below):
• To find out the description of each function, see the chapter "Specific adjustment".
Menu Name of the function
100 Type of system regulation
101 Configuration of the command unit
106 Configuration of the output between terminal channels 4 and N
112 External calibrated adjustment graphs
126 Configurations exterior sensor
148 Limit exterior temperature (T0)
150 Exterior temperature bivalence point (T1)
151 Delays for switching on booster heating
152 Differential stop/start booster heating
153 Mode of activation hot-water demand contact S5
154 Functioning of booster heating
155 Functioning of main circulator
158 Differential on the temperature setting from the ambient air
Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant
Minimum volume of the
installation (l)
Max volume of heat pump circuit,
without additional vessel, for
a water outlet temperature of
35°C (l)
Volume of water in the heat pump
Nominal water fl ow rate (m³/h)
i
i
i
i
i
Adjusting the heat pump's command unit
45/1
14
65
1
0.7
If there is no buffer tank, the installation must not
contain thermostatic valves on all emitters, to ensure
that the minimum flow for the installation is provided
(see table above).
Highlighted cable section on electric diagram: 2.5mm².
For the dimensioning of the other cables and the
electrical protection on the appliances, see the chapter
"Electrical connection".
The back up heater must be equipped with an
overheat safety device with manual resseting the
overheat safety device must be approved according EN
60730-2-9 and his trigerring tested with and without
water inside the back up heater
Application conditions in Domestic hot water mode
Timer relay:
the time delay must be adjusted as follows:
- 30 mn for low inertia heating installation (radiators)
- 60mn for high inertia heating installation (floor
heating)
- For technical informations details and specific
adjustments about hot domestic water installation see
chapter "Domestic Hot water controler function and
components description"
To improve slightly Heat Pump working time the two
coils of Aurostor tank could be connected in series
Value
4
1
1
1 - 12
2
-20°C
(To be defined) °C
20 minutes
5°C
1
1
1
0.3°C
INSTALLATION
geoTHERM
65/1 75/1 125/1 155/1
21 28 42 49
65 65 95 95
1 1.2 2.3 2.3
1 1.2 2.1 2.5
factory setting
2
0
1
8
2
-20°C
0°C
20 minutes
5°C
1
1
1
0.3°C
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