Inspection And Maintenance Check-List; Checking And Correcting The Filling Pressure Of The Heating Installation; Checking And Correcting The Filling Pressure In The Brine Circuit; Carrying Out A Restart And Test Operation - Vaillant flexoTHERM exclusive VWF 57/4 Installation And Maintenance Instructions Manual

13 Decommissioning

12.3

Inspection and maintenance check-list

The following table shows the inspection and maintenance
work that must be carried out at specific intervals.
No. Work
1 Check the general condition
of the product and that it is
leak-tight.
2 Check the pressure in the
heating circuit and, if re-
quired, top up the heating
water.
3 Check and clean the dirt
filters in the heating circuit.
4 Check the volume and con-
centration of the brine fluid
and the pressure in the brine
circuit. Top up with brine
fluid if required.
5 Check that the expansion
vessel and the expansion
relief valve in the brine circuit
are working correctly.
6 Check that the expansion
vessel and the expansion
relief valve in the heating
circuit are working correctly.
7 Check for leaks in the brine
and heating circuit, and re-
pair these leaks if necessary.
8 Check that the circuit
breaker in the electronics
box is working correctly.
12.4 Checking and correcting the filling
pressure of the heating installation
If the filling pressure falls below the minimum pressure, a
maintenance message is shown on the display.
– Min. heating circuit pressure: ≥ 0.05 MPa (≥ 0.50 bar)
▶
Top up the heating water in order to start up the heat
pump again; Filling and purging the heating installation
(→ Page 19).
▶
If you notice frequent losses in pressure, determine and
eliminate the cause.
12.5 Checking and correcting the filling
pressure in the brine circuit
If the filling pressure falls below the minimum pressure, the
heat pump is automatically shut down and a maintenance
message is shown on the display.
– Minimum brine fluid pressure: ≥ 0.05 MPa (≥ 0.50 bar)
▶
Top up the brine fluid to start up the heat pump again,
Filling the brine circuit (→ Page 20).
34
Inspection Main-
(every year, tenance
within 24 (every
months at two
the latest) years)
x x
x x
x x
x x
x x
x x
x x
x x
Installation and maintenance instructions flexoTHERM exclusive 0020213395_00
– Min. brine fluid operating pressure: ≥ 0.07 MPa
(≥ 0.70 bar)
▶
If you notice frequent losses in pressure, determine and
eliminate the cause.
12.6

Carrying out a restart and test operation

Warning.
Risk of burns due to hot and cold com-
ponents.
There is a risk of burns from any uninsulated
pipelines and from the auxiliary electric heat-
ing.
▶
Before starting up the unit, install any cas-
ing sections that have been removed.
1. Start up the heat pump system.
2. Check that the heat pump system is working without
any problems.
13 Decommissioning
13.1

Temporarily decommissioning the product

1. Use the partition that is installed on-site (e.g. fuses or
power switches) to disconnect the product from the
power supply.
2. Observe the installation site requirements regarding
frost protection. (→ Page 12)
13.2

Decommissioning the product

1. Use the partition that is installed on-site (e.g. fuses or
power switches) to disconnect the product from the
power supply.
2. Drain the product.
3. Dispose of the product and the operating materials in
accordance with the national regulations.

14 Recycling and disposal

Disposing of the packaging
▶
Dispose of the packaging correctly.
Disposing of the product and accessories
▶
Do not dispose of the product or the accessories with
household waste.
▶
Dispose of the product and all accessories correctly.
▶
Observe all relevant regulations.