Touch Screen
21
intervention of the chillers change, by rotating the decalibration of the set point of the chillers, in order to balance the load on the
various machines. If a chiller is in alarm, it is excluded from the regulation. By default
Par 8/65=0
.
4.3
CHILLER/HEAT PUMPS MANAGEMENT
Up to 7 chiller HP_OWER series can operate by mean of the Touch Screen remote control panel. The main functions that can be
regulated are:
•
ON/OFF controlling;
•
Change of season (summer, winter, summer with sanitary mode, winter with sanitary mode, sanitary mode);
•
Set-point setting;
•
Display current alarms;
•
Alarm history residing in the keyboard with the date and the time of the event;
•
Access to the parameters of the chiller (password protected);
•
Display of the main statuses of the chiller;
•
Weekly programming in summer, winter, sanitary mode and of the legionella disinfection cycle.
4.3.1
ENABLING INDIVIDUAL CHILLER FOR SANITARY WATER PRODUCTION
Among the chillers (in the network) that are enabled to produce DHW water, you can choose using the appropriate sub-menu in
“
Status setup
”, which of these may participate in the sanitary production (see Paragraph 4.7.2). Only those selected will be enabled
to the production of sanitary water, all the others are used exclusively for the plant.
4.4
MANAGEMENT OF FANCOIL UNITS (inactive)
With the “Touch Screen” remote control panel, we can manage up to 80 fancoils, with a maximum number of 9 zones. Note that,
the fan coil settings can be done for individual zones (not for individual units). The main functions that can be set are given below:
-
ON/OFF (of the system and/or of the zone with relative scheduler);
-
Season (of the system);
-
Fan speed (fancoil of the zone);
-
Dehumidification control.
The set-point will be sent also to the fan coils of the belonging zone. Note that, a correction can be done locally by mean of the
fancoil’s knob.
4.5
INITIAL CONFIGURATION PROCEDURE OF “Touch Screen” REMOTE CONTROL PANEL
Note:
To make easy the installation and utilization of the remote control panel for water terminal units management, it is
recommended to separately power on the water terminal units (fancoils); each terminal unit must be intercepted fom its proper
disconnector.
4.5.1
ADDRESSING
During the first startup step, it is necessary to power on separately each water terminal unit. The addressing process takes place
respecting the following steps:
1.
A unique addresses should be assigned to each water terminal unit on the network, to do this, you can use the dip switches
(first valid address is the value 10).
In the case of addressing beyond the value 32, it is necessary to set an address lower than 32 using the dip-switches and
acting on the parameter 23 of the concerned fan coil. Once the parameter has been configured, it’s recommended to set
the dip switches in a definitive way and restart the water terminal unit.
2.
Each fancoil (water terminal unit) must have a unique address. It is important to assign consecutive addresses to the
fancoils of the same zone (eg if there are 3 fancoils inside the same hall and if you want to associate them to a single
thermal zone called for example
ATRIO
, you need to assign to fancoils a series of addresses from 10 to 12, etc.);
3.
Once all the fan coils have been configured, should be powerd on;
4.5.2
NETWORK SCANNING
One the addressing has been done for each fan coil, it is necessary to perform a network scanning to check if all the fancoils are
correctly recognized. To do this, it’s recommended to:
1.
Power on all the fancoil units;
From the main page of the system, press on the following button
to enter in the “
Configuration
“page;
2.
Press then on the button
to enter in the “Service
menu
”;
3.
Introduce the service password and press on the confirmation tick;
4.
Enter in “Network scanning”;
5.
Press the confirmation tick near the word "Start:" and wait the system to scan the network;
6.
At the end of scanning phase, the system should find all the chillers (max 7 in cascade) and all the fancoil units of the same
network. If the number of fan coils found does not match with those installed, so the wiring is not done correctly.
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