Vaillant VWZ MWT 150 Instrucciones De Instalacion Y De Uso página 13

∙ Open the main tap (A).
5.2 Draining the product
1
Key
1 Heat pump circuit air bleed valve
2 Heating circuit air bleed valve
∙ Open the air bleed valve (1) while fi lling the heat pump
circuit.
∙ Open the air bleed valve (2) while fi lling the heating
circuit with water.
∙ Close the vent as soon as water fl ows (repeat the
operation several times if necessary).
b Caution!
Risk of damage in case of bad purge!
If air purging is not done properly, this may
cause damage to the appliance.
Make sure the system is properly purged
•
air.
5.3 Installing the casing
1
2
Key
1 Front casing
∙ Put the front casing back on.
5.4 Available head for heat pump circuit
A
Key
A Installation heating circuit inlet
B Installation heating circuit outlet
A
800
700
600
500
400
300
200
1
100
0 500 1000
Key
A Pressure (mbar)
B Flow rate (l/hour)
1 Position "III"
2 Position "II"
3 Position "I"
START UP
B
3
2
1500 2000 2500 3000
EN
B
10