Service Valve; Information On The Data Plate - Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

3 Hydraulic block
4 Electronics box with
PCB
3.6.2 Design of the hydraulic block
12
11
10
9 8
7
1 Condenser
2 Pressure sensor (heat-
ing circuit)
3 Expansion relief valve
4 Heating return
5 Heating flow
6 Domestic hot water
cylinder return
7 Domestic hot water
cylinder flow
0020257319_02 Hydraulic station Installation and maintenance instructions
5 Indoor unit control
6 Electronics box (for
back-up immersion
heater)
1
2
3
6 5 4
8 Prioritising diverter
valve (heating cir-
cuit/cylinder charging)
9 Heating pump
10 Electric back-up heater
11 Service valve for filling
and creating a vacuum
in the refrigerant circuit
12 Automatic air vent
Product description 3
3.6.3 Underside of the product
1 Drain for expansion
relief valve
2 Heating return
3 Heating flow
4 Domestic hot water
cylinder flow
3.7

Service valve

At the service valve, you can test the vacuum, carry out
pressure tests, and fill the refrigerant circuit.
3.8

Information on the data plate

The data plate is located on the rear of the electronics box.
Information Meaning
Serial no. Unique unit identification number
Nomen- VWL Vaillant, heat pump, air
clature
5, 7, 12 Heating output in kW
7 Heating mode or cooling mode
/5 Unit generation
IS Indoor unit, split technology
230 V Electrical connection:
230 V: 1~/N/PE 230 V
400 V: 3~/N/PE 400 V
IP Protection class
Symbols Compressor
Control
Refrigerant circuit
Heating circuit
Back-up heater
P max Rated power, maximum
I max Rated current, maximum
I In-rush current
Refri- MPa (bar) Permissible operating pressure (rel-
gerant ative)
circuit
R410A Refrigerant, type
1
2
3
4
5
6
7
5 Domestic hot water
cylinder return
6 Liquid pipe connection
7 Hot gas pipe connection
21