KDVRAY500 MANUAL
Pag. 17 of 24
DIGITAL INPUTS TERMINAL STRIP AND ENABLED FUNCTIONS
- COM: common terminal for all digital inputs:
- DI01: season mode. The season mode is set as following: 1 = summer, 0 = winter, (note:
season source must be set as DI instead of keyboard from menu). In winter mode the
chiller part is disabled.
- DI02: recirculation consent; the inlet fan will be activate, recirculating the air.
Recirculation can be managed with differentiated flow rates, according to the set
programme schedule (“Normal” and “Economy” functions).
- DI03: renewal mode; renewal can be managed with differentiated flow rates, according
to the set programme schedule (“Normal” and “Economy” functions).
- DI04: dehumidification mode (contact from the ambient humidity regulator).
Toghether with the chiller circuit enabled and, unless the “renewal contact” is closed, the
recirculation mode will start up by default. This function is only possible in summer
season.
- DI05: integration mode (supplying sensible heat). In integration mode, unless the
“renewal contact” is closed, the recirculation function will start up. The integration
function acts differently according to the season:
o
WINTER; the delivery air temperature is controlled by the winter integration
temperature value;
o
SUMMER; the delivery air temperature is controlled by the summer integration
temperature.
- DI06: Stop renewal; it stops renewal mode with priority on DI03 and on time slots. It is
useful in combination with a three contact switch. You can have three renewal modes:
o
renewal ON (DI03 closed, DI06 open)
o
renewal OFF (DI06 closed)
o
renewal AUTOMATIC (by time slots, DI 03 and DI06 opened).
- DI07: free-cooling mode. If outside temperature is within the allowed range (see
freecooling menu) the free-cooling mode activates the fans and opens the free-cooling
damper to force the outside air through the bypass duct instead of passing through the
exchanger.
- DI08: reduction mode. This function doesn’t start any component but if the unit is
working it forces the air flow rate according to reduction mode settings.
