CHANGING THE SET TIME WITHIN A RANGE.
If only the SET TIME is to be subsequently altered then the following sequence
can be used.
a) Press SET button, and the display will indicate the SET TIME.
b) Press the SET button again, and the most significant digit will flash. Time
may now be set as per the set up procedure detailed earlier ( e to j).
Notes: During this procedure power may be maintained and the times will not
take effect until stored, and then only when next called for by the timer.
This timer has an integral battery saving function which will switch off the
display if no button has been pressed or 20 seconds during setting up
procedure. When this happens the current parameter being set will not be
saved, but all previous parameters will be saved.
If the wrong mode or time range has been selected it is necessary to cycle
through all the other setting procedures until the display blanks and the
selection procedure can be restarted ae step (b). This may readily be achieved
by repeatedly pressing the SET button.
The SET TIME, RANGE, and MODE data is retained in battery memory for at
least three months without power applied. If the timer is not powered up for a
long time and the set up data has been lost, “SET” will flash on the display.
6.3 RELATIVE HUMIDITY SETTINGS
a) Locate the relative humidity stage setting controls as shown above, turn on
Control/Power module isolator and note that relative humidity display shows
prevailing RH measured at master dehumidifier.
b) Set first stage humidity required by adjusting control ‘A’.
c) Set switch ‘B’ to “Set Point Check” and adjust ‘C’ to raise or lower RH
display. And note actual switching point of stage 1 (as set a (b) above). Re-
adjust ‘A’ and check by varying control ‘C’ until desired setting achieved.
d) Repeat B and C for all 4 or 6 stages then revert setting switch ‘B’ to
“Normal run position”.
R2
R1
R3 R4 R5 R6
R8
R7
DT1 DT2 DT3 DT4 DT5 DT6
D1
D2
AS1 AS2 AS3 AS4 AS5 AS6
RH1 RH2 RH3 RH4 RH5 RH6
S1
S2
T1
ON
OFF
ISOLATOR TURNED ON
RH DISPLAY FIRST STAGE
SETTING
SECOND STAGE
SETTING
'A'
'D'
SETTING SWITCH
'B'
'C'
SET POINT
CHECK/ADJUST
+
-
SET POINT
CHECK
NORMAL
RUN
24
261001 ISSUE 11
DH334BH & STAGE CONTROL MODULES TECHNICAL MANUAL MANUAL
