A.O. Smith SGS - 100, Installation & Service Manual

Page: 54 / 110

Draining
54 Instruction manual SGS
6
gis
6.4 Draining solar
heating system
6.4.1 Draining glycol-filled system
Note
No special safety measures are required when working with the diluted
glycol solution specified by the manufacturer. For more information about the
fluid, please contact the manufacturer.
1. Activate the
MENU
with .
2. Position the cursor in front of
OFF
.
3. Confirm
OFF
with .
4. Wait until the fan has stopped. The symbol is then dimmed.
Caution
Failure to wait until the fan stops purging can cause damage to the
appliance.
Warning
The fluid in the pipes and the pipes themselves can be extremely hot! Wait
therefore until the appliance has cooled down sufficiently.
Note
The draining procedure described in this manual is intended for the pump
system supplied by the appliance supplier. For any other system, you should
follow the procedure for that system.
1. Switch off the solar heating system.
2. Connect a hose to the lowest drain point in the solar heating system.
3. Insert the hose into the glycol jerry can.
4. Open the valve of the lowest drain point.
5. Open the air bleed point (26) of the solar heating system.
6. Close the drain point when the jerry can is full.
7. Insert the hose into a new jerry can, and connect it to the drain point.
8. Repeat steps 6 and 7 until no further glycol comes out of the system.
9. Close the air bleed point and the valve of the drain point.
10. Remove the hose.
Note
Dispose of the drained glycol in an environment-friendly manner, and
according to local regulations.
MENU
»OFF
^ ON
È WEEK PROGRAM