Weishaupt WHI sol/aqua 20 1, Руководство пользователя, Страница: 24 / 36

Installation and operation instructions
Separation station WHI sol/heat 20 #1 / 40 #1; Separation station WHI sol/aqua 20 #1 / 40 #1
7 Maintenance
83514202 ▪ 1/2014-06 ▪ Ext. PAW
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7 Maintenance
The WHI sol modules are low in maintenance. However, as part of the annual inspection
of the domestic water system, the following items should be checked/observed:
• Check all connections for leaks
• Check the safety equipment
•
Perform a functional check and check the setting parameters
•
Plausibility check of the control parameters and nominal values
•
Check the heat exchanger for dirt and functioning
We recommend concluding a maintenance agreement.
In order to be able to perform replacement or service work on the station, the system
must be depressurised.
DANGER
Risk of burns and scalding!
The valves and fittings and the solar fluid can have temperatures
of more than 100 °C. The solar fluid may escape as vapour and
result in scalding.

Perform maintenance work only when the collector
temperatures are below 50 °C.

Wait until the solar fluid has cooled down to at least
50 °C.
1. Close the station locks and drain the solar fluid. Make sure that the solar fluid is
collected in a heat-resistant container.
2. Replace the defective part with a new part.
3. Fill the system as described under 6 Commissioning (see page 18).
7.1 Draining the solar system
1. Switch off the controller and secure it against being switched on again.
2. Open the check valves in the supply and return ball valves [a|b] by rotating
them to the 45° position (see page 20).
3. Connect a heat-resistant hose to the fill and drain valve [g]. Make sure that the
solar fluid is collected in a heat-resistant container.
DANGER
Danger of scalding due to hot solar fluid!
The escaping solar fluid can be very hot!

Position and secure the heat-resistant collecting
container such that persons nearby are not put at risk
when the solar system is drained.
4. Open the fill and drain valve [g] of the transfer station.
5. To accelerate draining of the solar circuit, you can open the air-bleed valve,
if present, at the highest point of the solar system.
6. Dispose of the solar fluid observing the local regulations.