PRO-
78
EN
3.4
PRO- INTERFACE
General features
The interface features the pages listed below:
• Home page showing machine main parameters.
• Password entering page.
• Parameter entering page.
• Operating mode selection page.
• Menu page.
If the interface is not used for a long time, the display will
turn
off.
The
control
is
always
active
and the operating mode remains unchanged. The display
will turn on again when the user presses a key.
By pressing once, the display will light up, press again to
go back to the last page and the wrench symbol will ap-
pear.
Password entering page
Enter password
0_**
(0 = basic access)
Password must be entered one number at a time. The flashing
cursor indicates the number being entered; use the arrow
keys UP and DOWN to change this value. Confirm by pressing
ENTER and the cursor will move to the next
number.
By pressing Enter after the last number the menu list
of the different pages will be updated according to the ente-
red password level. If a wrong password is entered, the user
will remain in the password entering page. To select pas-
sword 0 (basic access) just press Enter twice.
Enter password
1_**
(0 = basic access)
The first entered number is 1 and
now the cursor is flashing on the
second number.
Enter password
11_**
(
0 = basic access)
Menu page
Access to the menu page is possible only after entering the
password.
The view is the following
\\MAINMENU
GENUNIT
PUMPSTAT
TEMP
RUNTIME
PRESSURE
MODES
SETPOINT
LANGUAGE
INPUTS
LOGOUT
OUTPUTS
General Parameters Menu
Indication of the menu path
Menu list
Menu description
Home page
There are four types of boxes showing:
The
first
one
shows
the
unit
sta-
tus followed by a number (first box at the top),
the other three show the indication of some parameters.
3.3 DRY CONTACTS
Dry contact management
In NXH models, if the unit works in remote, the automatic
heat pump/chiller switch function is disabled. It is possible to
manage the heat pump/chiller switch if the configuration on
the
Pro-
control will allow it, by using the dry con-
tacts in the following way:
Without multiplexing connection
With multiplexing connection
The heat pump/cooling automatic selection function is
based on the outside temperature measurement
Setpoint selection contact
Selection contact of the demand limit
Open
Cooling
Heating
On/Off contact
Open
Closed
Closed
Contact
Heat/Cool
-
Open
Closed
Closed
Cooling
Heating
On auto
On/Off contact
Open
Closed
Closed
Open
Contact
Heat/Cool
Open
Open
Closed
Closed
Cooling
Heat pump
csp 1
csp 2
hsp 1
hsp 2
Setpoint selection
contact
Open
Closed
Open
Closed
100%
Limit 1
Limit 2
Limit 3
Absorption limit 1
Open
Closed
Open
Closed
Absorption limit 2
Open
Open
Open
Closed
See example below:
LOCAL OFF 1
Entering water temp
EWT
17.2 °C
Leaving water temp
LWT
17.2 °C
Outside air temperature
OAT
21.7 °C
It is possible to move from one page to the other using the UP
and DOWN keys on the control panel. In this case the number
at the top right-hand side will be updated.
