Start-up 8
0020297937_01 aroTHERM plus Installation and maintenance instructions
125
N
L3
L2
L1
N
L
1
2
3
4
5
L1
L2
L3
N
X211
X210
X200
1
2
L
N
L
N
4
2
3
1
2.
Install two disconnectors for the product, as shown in
the figure.
3.
Use a 5-pole power supply cable (from the heat pump
electricity meter) and a 3-pole power supply cable (from
the household electricity meter). Route this from the
building and through the wall duct to the product.
4.
Connect the 5-pole power supply cable to connection
X200
in the electronics box.
5.
Remove the 2-pole bridge from the
X210
connection.
6.
Connect the 3-pole power supply cable to connection
X211
.
7.
Use the strain relief clamps to secure the power supply
cables in place.
7.10
Connecting the eBUS line
1.
Use a 2-pole eBUS line with a conductor cross-section
of at least 0.75 mm
²
. Route this from the building and
through the wall duct to the product.
S20
S21
BUS
eBUS
+
-
5
6
3
4
1
2
X206
2.
Connect the eBUS line to connection
X206, BUS
.
3.
Use the strain relief clamp to secure the eBUS line in
place.
7.11
Connecting a limit thermostat
1.
Use a 2-pole line with a conductor cross-section of
at least 0.75 mm
²
. Route this from the building and
through the wall duct to the product.
S20
S21
BUS
5
6
3
4
1
2
X206
2.
Remove the bridge from the
X206, S20
connection.
Connect the line here.
3.
Use the strain relief clamp to secure the line in place.
7.12
Connecting accessories
▶
Observe the wiring diagram in the appendix.
7.13
Installing the cover for the electrical
connections
1.
Note that the cover contains a safety-relevant seal
which must be effective in the case of a leak in the
refrigerant circuit.
2.
Secure the cover by lowering it into the locking mechan-
ism without damaging the circumferential seal.
3.
Use two screws to secure the cover to the lower edge.
8
Start-up
8.1
Checking before switching on
▶
Check whether all the hydraulic connections are estab-
lished correctly.
▶
Check whether all the electrical connections are estab-
lished correctly.
▶
Check, depending on the type of connection, whether
one or two disconnectors are installed.
▶
If it is stipulated for the installation site, check whether a
residual-current circuit breaker has been installed.
▶
Read through the operating instructions.
▶
After installation, ensure that at least 30 minutes have
passed before switching on the product.
▶
Ensure that the cover for the electrical connections is
installed.
8.2
Switching on the product
▶
Switch on all of the disconnectors to which the product is
connected in the building.
8.3
Checking and treating the heating
water/filling and supplementary water
Caution.
Risk of material damage due to poor-qual-
ity heating water
▶
Ensure that the heating water is of suffi-
cient quality.
▶
Before filling or topping up the installation, check the
quality of the heating water.
Checking the quality of the heating water
▶
Remove a little water from the heating circuit.
▶
Check the appearance of the heating water.
▶
If you ascertain that it contains sedimentary materials,
you must desludge the installation.
▶
Use a magnetic rod to check whether it contains mag-
netite (iron oxide).
▶
If you ascertain that it contains magnetite, clean the in-
stallation and apply suitable corrosion-inhibition meas-
ures, or fit a magnetic filter.
▶
Check the pH value of the removed water at 25 °C.
▶
If the value is below 8.2 or above 10.0, clean the installa-
tion and treat the heating water.
▶
Ensure that oxygen cannot get into the heating water.
