A.O. Smith Cyclone BFC-28, Installation, User And Service Manual

Page: 64 / 104

Main menu
62 Instruction manual BFC
11
gis
2. Use:
•
to increase the value;
• to decrease the value.
• Confirm with .After confirming, the
appliance enters "ON mode".
Note
If the preset temperature is higher than the current
water temperature, then the appliance might not
immediately start the heating cycle. To prevent
excessively frequent switching on and off, there is a
heating margin. The standard setting for this margin is
5°C. The appliance starts heating up if the water
temperature is 5°C below the SETPOINT.
We refer to this margin as the hysteresis. The service
and maintenance engineer can set (12.2 "Setting the
hysteresis") the hysteresis value.
11.4.2 Setting water temperature during
ON mode
The water temperature can also be directly adjusted
when the water heater is in "ONmode". Simply use:
•
to increase the value;
• to decrease the value.
• Confirm with .
11.5 Week program
Using the week program, you can set the water
temperature for the days and times you want.
If the appliance is running under a week program, then
this is indicated on the display by the text
PROG
on the
first line (see the figure). The second line shows the
time of day, the day of the week and the temperature.
The third line shows the next switching time of the
week program and the programmed temperature. The
fourth line shows the text
PROGRAM ACTIVATED
.
The appliance's default week program switches the
appliance on every day at 00:00 and off at 23:59. The
default water temperature setting is 65
o
C.
If you want, you can change every setting in the
appliance's standard week program.
If the water temperature becomes too low while the
week program is running, the appliance will run
through the heating cycle (9.3 "The appliance's
heating cycle") and return to the week program.
The following topics are covered here:
•
Starting and stopping the week program
• Changing the appliance's standard week program
• Adding times to a week program
• Deleting times from a week program
11.6 Starting and stopping the week
program
The week program can be started up from any other
operating mode, as follows:
1.
:
WEEK PROGRAM
|
START OPERATION
Confirm with .
A week program can be shut down simply by
activating a different operating mode, for example the
"ON mode".
11.7 Changing the appliance's standard
week program
Note
First fill-in the desired week program on the
supplied week program card.
A week program is made up of a number of
programmable periods in which you can have the
appliance switch on and off. A period consists of:
•
switch-on time: day of the week, hours and
minutes:
• switch-off time: hours and minutes;
• the water temperature setting;
• on/off setting for a program-controlled pump.
Note
The switch-off time must always be followed by a
switch-off time on the same day of the week. A
maximum of
three periods may be programmed per
day. You can program a maximum of 21 periods.
Call up the menu for the week program as follows:
•
:
WEEK PROGRAM
|
PROGRAM OVERVIEW
.
Confirm with .
SETPOINT
» 65ÉC
ON
13:45 Thursday 65ÉC
Tset»65ÉC
PROG
07:55 Monday 64?C
MO 08:00 Tset 75?C
PROGRAM ACTIVATED
WEEK PROGRAM
START OPERATION
^»PROGRAM OVERVIEW
È