T
H E
P O W E R
F A M I L Y
(C) IDM ENERGIESYSTEME GMBH
Installation instructions Terra CL
7
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
0
5
10
15
20
25
30
35
40
45
-20
-15
-10
-5
0
5
10
15
20
1
1
451
451
W35 EN14
W35 EN14
3 E
4
CL 33
CL 25
CL 20
CL 15
CL 12
CL 10
CL 08
{
{
CL 30
outside temperature [°C]
heating capacity [kW]
bivalence point of the
particular heatpump type
standard external temperature
electr. additional heating
at TERRA CL 15
service water required
electr. additional heating
at TERRA CL 20
building- characteristic line
required heating capacity at
standard external temperature
incl. service water required
Design
3. Design
The dimensioning of an air/water heat pump should
be such that the bivalence point is between -3 and
-10 °C. This will help ensure that more than 90° of
the annual heating requirement is covered by the
heat pump.
The maximum heating output of a building is deter-
mined in the design, including its water consumption
requirement.
In addition, the standard outside temperature is
required. This is determined by geographical location
and can be obtained from various institutions.
Example:
Single-family house in Germany
4 persons
Service water requirement:
4 x 0.25 kW = 1 kW
Heating output requirement:
16 kW
Standard - outside temperature
Germany:
- 16 °C
Off-period factor:
1.1
Heating output required:
(Service water consumption re heating output required) x off-period factor = 18.7 kW
