Handing Over The Product To The User; Repair Work; Spare Parts; Draining The Heat Pump Circuit - Vaillant VWZ MWT 150 Installation Instructions And Instructions For Use

5.4.1 Hydraulic pressure loss of the heat
pump circuit
A Glycol water circuit fl ow
to heat pump
A
300
250
200
150
100
50
0 500 1000 1500 2000 2500 3000
A Pressure (mbar)
B Flow rate (l/hour)
5.5

Handing over the product to the user

After completing the installation:
► Answer any questions the user may have.
► Draw special attention to the safety instructions which the
user must follow.
6

Repair work

6.1

Spare parts

► In case you need spare parts during maintenance or
repair, exclusively use genuine spare parts.
The genuine component parts of the product have been
certifi ed together with the product in the course of the CE
conformity check. If you do NOT use certifi ed genuine spare
parts during maintenance or repair, the CE conformity of the
product will expire. That is why we imperatively recommend
to install genuine spare parts.
0020166669_04 - 03/15 - Vaillant
A
B
B Glycol water circuit
return from heat pump
1
2
1 50% glycol circuit fl ow
rate
2 Water circuit fl ow rate
6.2

Draining the heat pump circuit

A
► Connect the drain pipe to tap (C).
► Insert the other end of the pipe into a suitable container to
collect the glycol.
► Open the tap (B).
B
► Open the heat pump circuit air bleed valve.
6.3

Checking tightness

► Check the water-tightness of the system.
6.4

Checking the electrical installation

► Check the electrical installation observing all relevant
regulations.
6.4.1 Checking the cables
► If the power cable of this product is damaged, then to
prevent danger, only the manufacturer, the after-sales
service or similarly qualifi ed persons shall replace the
power cable.
7

Decommissioning

► Isolate the product from the power mains.
► Drain the appliance (see chapter 6.2).
► De-install the product.
► Recycle or dispose the product and its components (see
chapter 8).
REPAIR WORK
B
C
23