4/16 CC1B-Hints-en Preliminary 04.02.2003 HVAC Products

2. Hints
2.3 How to adjust parameters
RWF40 user manual Section 6.3
Shown at the right is the basic display.
The current configuration of your specific
controller will determine which levels you will be
allowed to access.
C112 must be xxx1 or xxx0 to acces s the param eter
level.
The C112 locking code can only be adjusted by the manufacturer.
From the basic display, you may skip the user level, to reach the
parameter level.
Press and hold, for 3 seconds, and release.
The actual valu e display, (0)
shows the current parameter value.
The setpoint display, ( AL)
shows the param eter item you are ad justing.
Parameter level items summary:
AL Alarm Limit value for c omparator
HYSt Switching differential, Hysteresis f or limit c omparator
Pb.1 Proportional band 1
dt derivative time
rt Integral action time
db * dead band, contact spacing
tt * Actuator running time
HYS1 Switch-on threshold, Hysteresis 1, 2-stage burner
HYS2 Switch-off threshold, Hysteresis 2, 2-stage burner
HYS3 Switch-off threshold, Hysteresis 3, upper
q Response threshold
H Heating curve sl ope
P Parallel displacement
* Items are only d isplayed when controller
is c onfigured for a 3-position output.
Example Adjust the value for parameter AL.

If no keys are pressed for 30 seconds, at anytime, the controller will
automatically return to the basic display.
The current value of AL, ( 0)
is shown in t he actual value d isplay.
The current parameter item (AL)
is shown in the setpoint display.
The display is steady, (nothing is flashing)
and the value for AL can now be adjusted.
You can decrease You can increase
the value by the value by
pressing pressing
and releasing it. and releasing it.
You can accept Or, you can
the change by advance to the
waiting 2 seconds. Next parameter
by pressing
once and
The red LED’s will releasing it.
blink once, and
become the new HYSt can be
value. adjusted the
same way you
just did AL.
Your options at t his point ar e:
Press and r elease, to immediately return to the basic display.
Press and release it, to advance down to Pb.1,
(the next parameter).
… after the last parameter item P, press and release it ,
to advance down to SP1, (the 1st user item).
… after the last user item, the menu cycles back to the 1st user item.
Or simply wait 30 seconds and the controller will automatically return to
the basic display.