Electra ECF12 DCI INV, Техническое руководство, Страница: 56 / 88

CONTROL SYSTEM
11.2.7 Dry Contacts
Dry contacts are used to interface the system with an external building management system
(BMS).
Night input. Switches the system to night mode when closed.
During night mode, the outdoor unit speed will be reduced in order to reduce the system
noise level.
SB input. System will be turned to Stand-by when the contact is closed.
Power Shedding input. Limits the maximum power consumption when closed.
Forced Mode input. Used to force the operation mode of the system
Alarm output indicates a failure at the system.
Alarm output will be activated when there in the following ODU Faults/Protections
1 to 6, 8 to 22, 24, 25, 27 and 28.
Alarm output will be OFF when the Fault/Protection is cleared.
11.2.8 Temperature Sensors
CTT – Compressor Top Temperature
OAT – Outdoor Air Temperature
SUCT – Suction/Evaporating Temperature
OCT – Outdoor Coil (heat exchanger) Temperature
HST – Heat Sink Temperature
RGT1..4 – Indoor Unit 1..4 Returned Gas Temperatures
11.2.9 Base Heater
Heating element designed to melt any ice that is accumulated on the outdoor unit base
during low heating operation.
Revision
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11-3