Riello NXC 021 User Manual

PRO-DIALOG+
78
EN
3.4 PRO-DIALOG + 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ashing
cursor indicates the number being entered; use the arrow
keysUPandDOWNtochangethisvalue.Conrm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rstenterednumberis1and
nowthecursorisashing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 rst one shows the unit sta-
tus followed by a number (rst 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congurationon
the
Pro-Dialog+ 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.

Riello NXC 021 Specifications

General

Brand	Riello
Model	NXC 021
Category	Air Conditioner
Language	English