54
User Menu (E)
The screens in the User menu are editable. The default password is “0000”.
Screen
Ref.
Screen
Description
E01
• “
Language”:
Sets the language to English,
Italian, French, Dutch, Spanish or German.
•
“Unit System”:
Sets the unit of measure of
controls to US, UK, CANADA, LONDON, SI
•
“Site”:
BAC job number (starts with “U...”)
for the job site reference.
E02
•
“Operating Mode”:
Select the operating
mode from: Energy Saver, Nexus, Water
Saver
•
“Run authorization”:
activate or deactivate
the unit. This variable can either be set
directly in this screen or via a BMS variable
Refer to “Controls Connections” on
page 56
.
•
“Leaving PrFl Setpoint”:
Set the required
leaving process fluid temperature setpoint
For Nexus mode selection on E02, water and
energy savings can be optimized from Dry to
Wet with “1” corresponding to maximum energy
savings and “7” corresponding to maximum
water savings
Water Saver Mode is further divided in to two
categories:
•
Winter Guard Disabled (default)
: Modules
are allowed to switch to wet operation as
needed
•
Winter Guard Enabled:
Modules always
operate dry
E03
Options Enable/Disable:
•
“Customer Input”:
Analog input to control
Fan/Fans speed
Once the customer input signal is enabled, type
of signal can be defined as 0-10V or 4-20mA.
Reverse Signal - Yes/No
E04
PI-parameters: Determine the reaction speed to
changes in fluid outlet temperature.
• “Prop. Band”: Sets value for the proportional
band of the PI controller.
• “Integr. Time”: Sets value for the integration
time of the PI controller.
NOTE:
Make the unit react faster
(slower) to changes in fluid
outlet temperature by decreasing
(increasing) the proportional band
and integration time.
Table 9.
User Menu (E)