Page 36
Electrical connection
Before connection, the electrics cabinet must be open-
ed. To do this, loosen the grip plate (see diagram). The
connecting terminals will then be freely accessible. The
connecting terminals for the mains and primary power
supply connections are separate (see diagram or follo-
wing pages).
Mains supply:
230V/ 50 Hz
Primary power supply connection:
3x400V / 50 Hz
Electric heating immenser connection: 3x400V / 50 Hz
The supply lines must have the relevant thickness. For
more information, see technical data point on page 5.
Connecting terminals:
Single: primary power supply terminals and connection
for electric heating immenser 400V/ 50 Hz
3-layer: control current and output terminals 230 V/ 50
Hz
2-layer: sensor terminals (low voltage)
Before working on the electronics, the
machine must be disconnected from the
mains.
Given below are the connections to be provided by the
customer, on series terminals, shown in black.
The sizes of the cable cross sections for the primary elec-
trical connection and electric heating immerser should be
selected in accordance with the technical data (page 5).
Primary power supply
System earthing:
When the protective conductor is connected correctly, the
electrical panel and the heat pump casing are earthed.
With interior installation, an emergency
stop switch for the heating system must be
fitted on the heat pump's exterior.
The connecting terminals for the power supply are desig-
ned as single-layered terminals.
1
L1
X1
2
L2
3
L3
5
PE
4
N
6
L1
7
L2
8
L3
9
PE
10
L1
11
L2
12
L3
13
N
14
PE
15
L1
16
L2
17
L3
18
N
19
PE
20
L1
21
L2
22
L3
23
N
24
PE
X1
1
L
X1
3
PE
2
N
4
L
6
N
7
PE
8
L
9
N
10
PE
14
L1
15
L1
5
L
11
L
12
N
13
PE
16
L1
17
N
18
PE
X5
1
2
3
4
5
6
7
8
1
X2
2
3
4
5
6
PE
N
L
N
L
E1
PE
N
L
N
L
L N
L N
55
56
N
L
N
X3
55
56
57
58
59
60
61
62
63
64
65
66
X4
81
82
83
84
85
86
87
88
89
90
91
1
L1
X1
2
L2
3
L3
5
PE
4
N
N
L
8
X5
3x400V / 50Hz
main current
EW / WVU
- idle
periode block
air inlet sensor
PTC RFT 1
14A40
defrost sensor
PTC RFT 204B30
condenser sensor
PTC RFT 204B30
LP
- pressostat
HP
-pressostat
starting current limiter
fault output
fan
EW / WVU - Idle periode block
close
open
room station/ remote control
RSS-T / RFF-T
AF external sensor
RLF
, PF
, WF
return- / buffer- or heating generator
SF service water sensor (buffer sensor)
VF1 flow sensor HC1
VE1 varible input 1
KVLF solar kollector sensor
VF2 flow sensor HV2
VE2 varible input 2
VE3 varible input 3
KSPF solar buffer sensor
relais
for speed control- led pumps
boiler loading pump/ priority valve
pump for heating circle without mixer
buffer loading pump
mixer HC1 open
brown
mixer HC1 close
black
pump HC1
mixer HC2 open
brown
mixer HC2 close
black
pump HC2
control 2. heating generator
variable output 2
programmable e.g. solarpump
phase 230V/ 50Hz
230V / 50Hz control current
electric heating immenser
4-way valve
(heatpump internal)
companion heating
for condens run-off
connection for
compressor heating
1x230V / 50Hz
primary current
compressor
radial
fan
primary current
heating immenser
connection
heating immenser
3x400V / 50Hz
primary current
compressor
radial fan
3x400V / 50Hz
primary current
heating immenser
3x400V / 50Hz
electric
heating immenser
TERRA CL 5-33 (400V) connection for heat pump
TERRA CL 05-15 (400V) connection for electric hea-
ting immerser
1
L1
X1
2
L2
3
L3
5
PE
4
N
6
L1
7
L2
8
L3
9
PE
10
L1
11
L2
12
L3
13
N
14
PE
15
L1
16
L2
17
L3
18
N
19
PE
20
L1
21
L2
22
L3
23
N
24
PE
X1
1
L
X1
3
PE
2
N
4
L
6
N
7
PE
8
L
9
N
10
PE
14
L1
15
L1
5
L
11
L
12
N
13
PE
16
L1
17
N
18
PE
X5
1
2
3
4
5
6
7
8
1
X2
2
3
4
5
6
PE
N
L
N
L
E1
PE
N
L
N
L
L N
L N
55
56
N
L
N
X3
55
56
57
58
59
60
61
62
63
64
65
66
X4
81
82
83
84
85
86
87
88
89
90
91
1
L1
X1
2
L2
3
L3
5
PE
4
N
N
L
8
X5
3x400V / 50Hz
main current
EW / WVU
- idle
periode block
air inlet sensor
PTC RFT 1
14A40
defrost sensor
PTC RFT 204B30
condenser sensor
PTC RFT 204B30
LP
- pressostat
HP
-pressostat
starting current limiter
fault output
fan
EW / WVU - Idle periode block
close
open
room station/ remote control
RSS-T / RFF-T
AF external sensor
RLF
, PF
, WF
return- / buffer- or heating generator
SF service water sensor (buffer sensor)
VF1 flow sensor HC1
VE1 varible input 1
KVLF solar kollector sensor
VF2 flow sensor HV2
VE2 varible input 2
VE3 varible input 3
KSPF solar buffer sensor
relais
for speed control- led pumps
boiler loading pump/ priority valve
pump for heating circle without mixer
buffer loading pump
mixer HC1 open
brown
mixer HC1 close
black
pump HC1
mixer HC2 open
brown
mixer HC2 close
black
pump HC2
control 2. heating generator
variable output 2
programmable e.g. solarpump
phase 230V/ 50Hz
230V / 50Hz control current
electric heating immenser
4-way valve
(heatpump internal)
companion heating
for condens run-off
connection for
compressor heating
1x230V / 50Hz
primary current
compressor
radial
fan
primary current
heating immenser
connection
heating immenser
3x400V / 50Hz
primary current
compressor
radial fan
3x400V / 50Hz
primary current
heating immenser
3x400V / 50Hz
electric
heating immenser
In TERRA CL models 22-33kW, another bivalent heat ge-
nerator (e.g. electric heating immerser) can be actuated
via terminal X2-3 - see next page.
Version for single-phase primary power supply
TERRA CL 05-15 (230V) connection for heat pump
1
L1
X1
2
L2
3
L3
5
PE
4
N
6
L1
7
L2
8
L3
9
PE
10
L1
11
L2
12
L3
13
N
14
PE
15
L1
16
L2
17
L3
18
N
19
PE
20
L1
21
L2
22
L3
23
N
24
PE
X1
1
L
X1
3
PE
2
N
4
L
6
N
7
PE
8
L
9
N
10
PE
14
L1
15
L1
5
L
11
L
12
N
13
PE
16
L1
17
N
18
PE
X5
1
2
3
4
5
6
7
8
1
X2
2
3
4
5
6
PE
N
L
N
L
E1
PE
N
L
N
L
L N
L N
55
56
N
L
N
X3
55
56
57
58
59
60
61
62
63
64
65
66
X4
81
82
83
84
85
86
87
88
89
90
91
1
L1
X1
2
L2
3
L3
5
PE
4
N
N
L
8
X5
3x400V / 50Hz
main current
EW / WVU
- idle
periode block
air inlet sensor
PTC RFT 1
14A40
defrost sensor
PTC RFT 204B30
condenser sensor
PTC RFT 204B30
LP
- pressostat
HP
-pressostat
starting current limiter
fault output
fan
EW / WVU - Idle periode block
close
open
room station/ remote control
RSS-T / RFF-T
AF external sensor
RLF
, PF
, WF
return- / buffer- or heating generator
SF service water sensor (buffer sensor)
VF1 flow sensor HC1
VE1 varible input 1
KVLF solar kollector sensor
VF2 flow sensor HV2
VE2 varible input 2
VE3 varible input 3
KSPF solar buffer sensor
relais
for speed control- led pumps
boiler loading pump/ priority valve
pump for heating circle without mixer
buffer loading pump
mixer HC1 open
brown
mixer HC1 close
black
pump HC1
mixer HC2 open
brown
mixer HC2 close
black
pump HC2
control 2. heating generator
variable output 2
programmable e.g. solarpump
phase 230V/ 50Hz
230V / 50Hz control current
electric heating immenser
4-way valve
(heatpump internal)
companion heating
for condens run-off
connection for
compressor heating
1x230V / 50Hz
primary current
compressor
radial
fan
primary current
heating immenser
connection
heating immenser
3x400V / 50Hz
primary current
compressor
radial fan
3x400V / 50Hz
primary current
heating immenser
3x400V / 50Hz
electric
heating immenser
1
L1
X1
2
L2
3
L3
5
PE
4
N
6
L1
7
L2
8
L3
9
PE
10
L1
11
L2
12
L3
13
N
14
PE
15
L1
16
L2
17
L3
18
N
19
PE
20
L1
21
L2
22
L3
23
N
24
PE
X1
1
L
X1
3
PE
2
N
4
L
6
N
7
PE
8
L
9
N
10
PE
14
L1
15
L1
5
L
11
L
12
N
13
PE
16
L1
17
N
18
PE
X5
1
2
3
4
5
6
7
8
1
X2
2
3
4
5
6
PE
N
L
N
L
E1
PE
N
L
N
L
L N
L N
55
56
N
L
N
X3
55
56
57
58
59
60
61
62
63
64
65
66
X4
81
82
83
84
85
86
87
88
89
90
91
1
L1
X1
2
L2
3
L3
5
PE
4
N
N
L
8
X5
3x400V / 50Hz
main current
EW / WVU
- idle
periode block
air inlet sensor
PTC RFT 1
14A40
defrost sensor
PTC RFT 204B30
condenser sensor
PTC RFT 204B30
LP
- pressostat
HP
-pressostat
starting current limiter
fault output
fan
EW / WVU - Idle periode block
close
open
room station/ remote control
RSS-T / RFF-T
AF external sensor
RLF
, PF
, WF
return- / buffer- or heating generator
SF service water sensor (buffer sensor)
VF1 flow sensor HC1
VE1 varible input 1
KVLF solar kollector sensor
VF2 flow sensor HV2
VE2 varible input 2
VE3 varible input 3
KSPF solar buffer sensor
relais
for speed control- led pumps
boiler loading pump/ priority valve
pump for heating circle without mixer
buffer loading pump
mixer HC1 open
brown
mixer HC1 close
black
pump HC1
mixer HC2 open
brown
mixer HC2 close
black
pump HC2
control 2. heating generator
variable output 2
programmable e.g. solarpump
phase 230V/ 50Hz
230V / 50Hz control current
electric heating immenser
4-way valve
(heatpump internal)
companion heating
for condens run-off
connection for
compressor heating
1x230V / 50Hz
primary current
compressor
radial
fan
primary current
heating immenser
connection
heating immenser
3x400V / 50Hz
primary current
compressor
radial fan
3x400V / 50Hz
primary current
heating immenser
3x400V / 50Hz
electric
heating immenser
TERRA CL 05-15 (230V) connection for electric hea-
ting immerser
The electric heating immerser can also be installed in the
400V version, but is only supplied with 230V.
The system must only be connected to
the mains and put into operation if the
entire heating system has been filled or
the circulating pumps may run dry.
