GAHP-AR – Installation, start-up, use and maintenance manual
24
Edition:
2014-08
2.5 PROLONGED PERIODS OF DISUSE
When the appliance is to be inactive for a long period, it is necessary to disconnect the
appliance before the period of disuse and reconnect it before it is used again.
To carry out these operations, contact a reliable hydraulic system installation technician.
Disconnecting the appliance before a period of disuse
You will need:
the appliance connected to the electricity/gas supply
1.
if the appliance is in operation, switch it off by means of the on/off commands (or via
the DDC, if connected and in controller mode) and wait for the shutdown cycle to
terminate completely (approximately 10 minutes);
2.
if the appliance is connected to a Direct Digital Controller (DDC): deactivate the DDC
electrically;
3.
disconnect the appliance from the power supply, putting the external disconnection
switch (GS - see Figure 17, page 53) provided in the appropriate panel by the
installation technician in the "OFF, closed" position;
4.
close the gas valve.
Do not leave the appliance connected to power and gas supply if it is to remain
inactive for a long period.
If the appliance is to be switched off in view of the winter period, make sure that the
hydraulic plant connected to the appliance contains an adequate percentage of
glycol antifreeze (consult the specific notes "Possible use of glycol antifreeze"
present in Paragraph “FILLING OF HYDRAULIC CIRCUIT (to be carried out by
installation technician)” on page 39, and the accompanying Table 13).
If glycol antifreeze is not to be used, empty the hydraulic circuit completely: for this
purpose the plant must be provided with water drainage points that are adequately
equipped, sized and located, to allow the water present in the circuit to drain away
completely and to allow the correct disposal of any glycol antifreeze present.
For these operations, contact a reliable hydraulic system installation technician.
Содержание GAHP Line AR Series
Страница 6: ...GAHP AR Installation start up use and maintenance manual 2 Edition 2014 08 ...
Страница 30: ...GAHP AR Installation start up use and maintenance manual 26 Edition 2014 08 ...
Страница 52: ...GAHP AR Installation start up use and maintenance manual 48 Edition 2014 08 ...
Страница 61: ...Electrical installer section Ed 2014 08 57 Figure 22 Internal electrical wiring diagram ...
Страница 82: ...GAHP AR Installation start up use and maintenance manual 78 Edition 2014 08 ...