12
AUTO –
The last display of the above example indicates that the unit is working
in automatic mode. The pump starts at a temperature difference of 15
o
F and
runs as long as ? T is above 7
o
F. The
B
symbol appears in upper display line
next to the collector symbol while the pump is running. User can switch to
manual mode by pressing
ò
key. By pressing
ð
key while centerline blinks, a
hand symbol
G
in lower line shows manual operation. Pressing
ð
one more time
lets you turn the pump
ON
or
OFF
. By pressing
ñ
key you change the pump
operation.
Advanced Mode “Men” –
USDT 2004 is extremely powerful. It can be used in
wide range of applications such as a BTU meter, a boiler fuel optimizer, a
swimming pool temperature differential controller, a variable speed controller, a
greenhouse temperature regulator, an air handler, and more. Factory settings are
exclusively for solar water heating systems in the USA market. However, all its
parameters can be changed to meet the unique requirements of other
applications. The user may request an access code to modify the USDT 2004
program mode and its parameters. To get your unique access code, please
register your unit at:
We need the serial number of your USDT 2004 and your e-mail address to e-mail
your access code.
The factory setting will be retrieved by pressing and holding
ò
key during
powering of the unit. A “RESTOR” displays for three seconds while factory
settings are restored.
dvanced
Mode
can be accessed only with an authorized access code.
Selection of different sensor types, energy collection calculation
parameters, system protection and optimization can be can be modified in
advanced mode.
Navigation of advanced features of the unit and selection of parameters is the
same as before by using
ïòñð
keys:
Advancing
– Press the Advance key
ïð
briefly to advance to the next selection
or to increase/decrease the set-point of the selected parameter. Hold it down for
fast change.
Acceptance
– Press Set-Up key
ò
once to select the parameter. Press
ñ
key to
accept the selection or the set point.
A
