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Application Guide INNOV@-0907- Page
Electrical panel
The electrical panel is fully contained in the unit it is designed
according CEE directives 72/23, 89/336 and related norms. The
possibility to have access to the e-panel opening the doors is
needed: with open doors the protection still remains IP30 thanks
to a protecting transparent plastic panel in front of the
components. All remote signals are at very low voltage 24 Vac by
means of a safety transformer. All e-panels have an air circulation
system in order to keep the inside temperature under control
when the unit is in operation. All connected loads are protected
with automatic switches in addition to those already
present inside the compressors and fans. All three phase units
are standard equipped with a phase sequence relay: this device
checks the sequence of the phases avoiding the start of the
compressors in the wrong direction.
Microprocessor
Two different type are available:
•
Basic
_ Carel µAc
•
Advanced
_ Carel serie pCO in combination with the
semigraphic pGD Display. For this control the
LENNOX
Software Development Team
is prepared to customize
the software according to customer specifications.
The main functions are summarised in:
- Input of main parameters by means of the key-
board;
- Displaying of operating conditions, alarms, devi-
ces;
- Switching ON/OFF or modulating [3 way valve, hu-
midifier] resources to keep constant the environment
parameters ;
- Modulating the three way valve for hot water re-
heating [option];
- Activating-deactivating the solenoid valve for hot
gas re-heating in DX version only [option];
- Modulating the humidifier capacity;
- Activating the different steps in electrical heating
electrical panel and components
[option]
•
Alarm management
:
- High / Low ambient temperature;
- High / Low pressure refrigerant side;
- Air Flow;
- Dirty filters;
- Electrical heating;
- Humidifier general alarm.
• Management of maximum compressor start-up;
• Serial communications [optional] RS232 or RS485.
Remote control and connection to BMS are possible as
all mP are able to be connected in serial communication
[the
LsDT
(
LENNOX SoftwareDevelopment Team
) is
ready to support customers in system integration]. Inter-
connectivity is every day more a must:
• Serial ports:
- RS232.
- RS485.
• Modem GSM: check with your local provider for the right
contract for the SIM card. After activation, INNOV@ units
are ready for a stand alone bi-directional communication
[only with Advanced pCO control].
• Protocols:
- Carel [Built In];
- Modbus® [Built-In with Advanced mP];
- Modbus® [with external gateway with basic mP];
- LonWorks® [option to be selected at unit's orde-
ring];
- BACnett [with external gateway];
- TCP-IP [with external gateway];
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