Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant
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15.3 Configuration of the booster heating
15.3.1
functioning of the circulators and the booster
heating
Exterior
temperature
T0 (code 148)
T1 (code 150)
T° < T0
T0 < T° < T1
T° > T1
Heat pump
OFF
booster
heating:
Element
boiler
See code 154 in
the table in the
chapter "Specific
settings"
See codes 151
and 152 in the
table in the
chapter "Specific
settings"
OFF
Main
circulator
See code 155 in
the table in the
chapter "Specific
settings"
Functioning
synchronised
with the heat
pump
Functioning
synchronised
with the heat
pump
Additional
circulator
See code 157 in
the table in the
chapter "Specific
settings"
See code 156 in
the table in the
chapter "Specific
settings"
See code 156 in
the table in the
chapter "Specific
settings"
15.3.2
Setting the bivalence point
A
B
0
2
-25
-15 -10 -5
0
5
10 15 20
4
6
8
10
12
14
16
18
20
-20
T1
6
T0
4
1
5
2
3
Z2
Z1
key
1 Power necessary to cover requirements at the regional reference
minimum temperature
2 bivalence point
3 Power graph for the heat pump
4 Heating limit
5 Calorific requirements
6 Regional reference minimum temperature
Z1 booster functioning only
Z2 Heat pump functioning only
T0 Limit exterior temperature (parameter 148)
T1 Exterior temperature bivalence point (parameter 150)
A Heating power (kW)
b Exterior temperature (°C)
The functioning range for the booster heating and the setting for
the bivalence point are defined by parameters T0 and T1.
-
T0 (code 148) = limit exterior temperature for the functioning
of the heat pump
For installations with electric booster (scheme A , B), the
parameter must be set to -20°C (factory setting).
For installations with heating booster (scheme C, D), the
parameter must be set at -10°C.
-
T1 (code 150) = exterior temperature for the bivalence point
The bivalence point (2) is obtained by the intersection of
the straight line showing calorific requirements (5) and the
heat pump's power curve (3) chosen according to the type of
installation (floor or radiators).
Power graphs for heat pumps
A
B
0
2
-20
-15
-10
-5
0
5
10
15
20
4
6
8
10
12
14
16
18
20
22
3
2
1
4
5
key
1 15 kW heat pump
2 12 kW heat pump
3 7 kW heat pump
4 6 kW heat pump
5 4 kW heat pump
A Heating power (kW)
b Exterior temperature (°C)
15.3.3
Example
Context
Detached house with one heating zone with radiators and boiler
booster (scheme C)
-
Calorific power determined for the reference regional minimum
temperature of -8°C = 10 kW
-
Pump at chosen value = 12 kW
-
Temperature limit for heating = 20°C
INSTALLATION
