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TTL air curtain systems - Control and automation panel UBT
plus
12
6. Operating modes (cont.)
6.4 SUMMER/WINTER mode
The SUMMER/WINTER key switchover between an operation with activated heating battery (WINTER mode)
or an operation without heating (SUMMER mode) manually.
For using this function a selenoid valve or electrothermal valve have to be installed.
At activated WINTER mode (LED lights up) the valve is opened.
At activated SUMMER mode (LED is not illuminated) the valve is closed basically.
The functions SUMMER mode or WINTER mode can also be initiated by an associated BMS signal connected
at the clambs 26/27 on the internal connecting board (PCB) - see also chapt. 10.1 - Internal connecting board.