Rotex GSU 320, Руководство по эксплуатации

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4 x Operation
24 BA ROTEX GSU - 09/2007
4.3 Temporary shutdown
If no heating and no hot water supply is needed over a long period, the ROTEX GasSolarUnit can be temporarily shut down. ROTEX
however recommend putting the system into Stand-By mode (see documentation for "ROTEX-Control“) and also discontinuing the
heating and hot water supply. The heating system is then protected from frost. The pumps and valve protection functions are
active.
If it is not possible to guarantee the gas and power supply when there is danger of frost, then
– the ROTEX GSU must be drained,
– suitable antifreeze measures must be taken for the connected heating system and hot water storage tank (e.g. draining).
Draining the storage tank
• Switch off the main switch and secure against re-actuation.
• Close gas stop-cock.
• Connect hose to the solar return flow using the hose connection from the accessories set (only this connection will open the
foot valve automatically). Use the KFE cock on Solaris return flow in the connected Solaris system.
• Drain the water from the tank.
Drain heating circuit and drinking water heat exchanger
• Switch off the main switch and secure against re-actuation.
• Close gas stop-cock.
• Separate the heating flow and heating return as well as the cold water inlet and outlet.
• Connect the bleeding hoses such that the hose opening is just above floor level.
• Drain the heat exchanger in siphon mode.
4.4 Re-commissioning
If the ROTEX GasSolarUnit has not been in operation for a long time, you have to carry out a few preparatory jobs and tests
before re-commissioning.
4.4.1 Work to be done before re-commissioning
1. Fill hot water heat exchanger
• Open the shut-off valve in the cold water supply line.
• Open the draw-off tap connection for hot water, so that you can set the highest possible draw-off quantity.
• Do not interrupt the cold water supply when water exits from the tap connections so that the heat exchanger is vented
completely and any contamination or residues are carried out.
2. Fill storage tank.
CAUTION!
A heating system which is shut down can freeze in the event of frost and may suffer damage.
• Drain the shut down heating system if there is danger of frost.
• If the heating system is not drained, the gas and power supplies must be maintained and the main switch
must remain switched on.
If the danger of frost exists only for a few days, with uncertainly in the gas and power supply, you can omit
draining the ROTEX GSU because the heat insulation is excellent, as long as the storage tank temperature is
regularly monitord and does not fall below + 3 °C.
This does not, however, provide any protection against frost for the connected heat distribution system!
WARNING!
Escape of flue gas from the system is dangerous to health.
• Top up the storage tank until it overflows, before starting up the ROTEX GSU.