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Performing maintenance
86 Instruction manual BFC
15
s
6. Switch the controller ON by setting the ON/OFF switch to position I.
The display will now show
INTERNAL CHECK
for about 10 seconds, and
will then go to the main menu.
7. Activate "ON mode" by going through the following steps:
- Press once on the blue arrow ( ) to position the cursor beside
ON
,
then press .
- Confirm the selection
START OPERATION
with .
8. If there is no heat demand, then raise (11.4 "
Setting the water temperature")
T
set
. Note the original setting. Draw some hot water off to create heat
demand.
9. Check whether the heating cycle runs correctly (9.3 "
The appliance's
heating cycle").
10. If you have adjusted T
set
, return it to the original value (11.4 "Setting the
water temperature").
11. Remove the plastic cover on the top of the appliance.
12. Check the supply and burner pressures (3.11 "
Check the supply pressure,
gas control valve pressure, CO
2
value and switching pressure") and adjust
them where necessary.
13. Check that all components of the chimney flue system are properly attached.
14. Check the pressure differential across the pressure
switch (3.11.4 "
Switching pressure measurement") and, if this is too low, the
heat exchanger should be cleaned (15.4.3 "
Clean heat exchanger").
15. Test the operation of the overflow valve of the protected cold supply setup.
The water should spurt out.
16. Check the drainage pipes from the discharge points of all valves and remove
any scale deposits that may be present.
17. Drain the water heater (see draining (6 "
Draining")).
15.3 Water-side
maintenance
15.3.1 Introduction
The following steps must be carried out on the water side:
1. Descaling and cleaning the tank
.
2. Clean condensation water discharge
.
15.3.2 Descaling and cleaning the tank
Scale and lime build-up prevent effective conduction of the heat to the water.
Periodic cleaning and descaling prevents build-up of these deposits. This
increases the service life of the water heater, and also improves the heating
process.
INTERNAL CHECK
MENU
»OFF
^ ON
È WEEK PROGRAM
86


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Others manual(s) of A.O. Smith BFC80

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A.O. Smith BFC80 User Manual - Dutch - 116 pages

A.O. Smith BFC80 Manual - Dutch - 2 pages


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