66
Installation and maintenance instructions 0020257297_06
3.
Check that no refrigerant is escaping. Check in particu-
lar all of the screwed connections and valves.
4.
Screw on both covering caps. Tighten the covering
caps.
5.13
Completing work on the refrigerant circuit
1.
Disconnect the refrigerant fitting from the maintenance
connection.
2.
Screw the covering cap onto the maintenance connec-
tion.
3.
Attach thermal insulation to the refrigerant pipes.
4.
Note down the refrigerant volume added at the factory,
the additional refrigerant volume added and the total
refrigerant volume on the sticker on the product.
5.
Enter the data in the service book.
6.
Install the cover for the hydraulic connections.
6
Electrical installation
6.1
Preparing the electrical installation
Danger!
Risk of death from electric shock as a res-
ult of an improper electrical connection!
An improper electrical connection may neg-
atively affect the operational safety of the
product and result in material damage or per-
sonal injury.
▶
Only carry out the electrical installation if
you are a trained competent person and
are qualified for this work.
1.
Observe the technical connection conditions for con-
necting to the energy supply company's low-voltage
network.
2.
Determine whether the energy supply company lockout
function has been provided for the product, and how
the power supply for the product should be designed,
depending on the type of shutdown.
3.
Use the data plate to determine whether the product
requires a 1~/230V or a 3~/400V electrical connection.
4.
Use the data plate to determine the product's rated
current. Derive the suitable cable cross-sections for
the electrical wires from this.
5.
Prepare the routing of the electrical wires from the
building and through the wall duct to the product.
6.2
Requirements for electrical components
▶
Flexible hose lines that are suitable for routing outdoors
must be used for the power supply. The specification
must comply with the standard 60245 IEC 57 with the
abbreviation H05RN-F as a minimum.
▶
The disconnectors must correspond to overvoltage cat-
egory III for full isolation.
▶
For the electrical fuse protection, slow-blow fuses with C
characteristics must be used. With a three-phase power
supply, the fuses must be three-pole switching.
▶
To protect people, type B universal-current-sensitive re-
sidual-current circuit breakers must be used if these are
stipulated for the installation site.
6.3
Installing components for the energy supply
company lockout function
If the energy supply company lockout function has been
provided, the heat generation from the heat pump can be
switched off intermittently by the energy supply company.
The unit can then be shut down in two ways, depending on
the specifications from the energy supply company:
–
The signal for the shutdown is then fed to connection S21
for the indoor unit (electronically controlled shutdown).
–
The signal for the shutdown is fed to a partition that is
installed on-site in the meter box (hard shutdown).
Condition
: Energy supply company lockout function provided
▶
Install and wire additional components in the building's
meter/fuse box.
▶
To do this, follow the installation instructions for the in-
door unit.
6.4
Removing the cover for the electrical
connections
1.
Undo the two screws on the upper edge.
2.
Release the cover by lifting it out of the stop.
6.5
Stripping the electrical wire
1.
If required, shorten the electrical wire.
-
+
N
L
PE
30 mm
≤
30 mm
≤
40 mm
≤
2.
Strip the outer sheathing from the electrical wire. In
doing so, ensure that the insulation on the individual
conductors is not damaged.
3.
To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
6.6
Establishing the power supply, 1~/230V
▶
Determine the type of connection:
Case
Connection type
Energy supply company lockout not
provided
Single power supply
Energy supply company lockout
provided, shutdown via connection
S21
Energy supply company lockout
provided, shutdown via partition
Dual power supply
Содержание VWL 105/5 AS S2
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