Johnson Controls YORK 360 Instrucciones De Instalación página 11

VOC (volatile organic compounds) sen-
sor that compares the VOC concentra-
tion in the air with the sensor set point.
If this concentration is greater, the probe
activates outlet Y1 by means of a relay.
The 230 VAC outlet signal between Y1
and N connects to the 230 VAC to 5VDC
conversion board. This board is to be fit-
ted next to the economiser control board
and the 5 VDC signal cable should be
connected to J18 on the economiser
board.
If the room thermostat set temperature
is satisfied and there is a call for air
Air quality probe
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quality, the damper opens to minimum
programmed renovation and the indoor
fan turns on. Then the damper opening is
increased in accordance with the maxi-
mum (30° C) and minimum (12° C) im-
pulse temperatures. If the air quality call
signal disappears, or if the thermostat
calls for air quality, or if the thermostat
calls for cool or heat, the damper goes
back to minimum renovation. If there
is no call from the thermostat and the
indoor fan is in auto mode, the fan turns
off and the dampers close.
The probe can select three levels of air
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quality, depending upon the position of
the jumper:
11. Extraction fan (optional)
The function of the return extraction fan
is to increase air extraction capacity of
the room. If the outdoor air damper is
open over 30%, the output of relay K1
on the economiser control board, con-
nector J14, and cables 582 and 583
are activated. See the wiring diagram
for wiring details and automatic switch
adjustment.
Caution:
Loose cables can cause overheat-
ing of terminals or incorrect opera-
tion of the unit. Fire hazards may
also exist. Therefore, make sure
all cables are connected tightly.
Operation
Allows generating cold air by modulating the
outdoor air intake damper. If conditions are
favourable, the yellow LED V2 will be on and
the damper will adjust to achieve an impulse
temperature of 12° C. Favourable conditions
in temperature mode are understood as an
outdoor temperature of below 20° C and, at
the same time, below the return temperature.
Favourable conditions in enthalpy mode
are understood as an outdoor enthalpy 5%
below the return enthalpy and an outdoor
temperature of below 20° C. For operation
in enthalpy mode, connect the probes and
place a jumper at S2. If the enthalpy probes
fail, a 4.1.5 incidenent will be indicated.
The yellow LED on the board will be off when
conditions are not favourable. Whenever
the indoor fan is in operation, the outdoor
damper is open proportionally to renew the
air in the room. (By default, 10% adjustable
value.)
In winter cycle, if the thermostat calls for heat
but no heat phase can be activated due to a
failure, the damper will remain closed with
the indoor fan in operation.
Should the indoor fan fail and this is detected
by the Yklon board, the outdoor air damper
closes completely.
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