KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
31
control and when
Compensation
is selected, the speeds switch to a speed compensated by
the supply air temperature.
Defrost
(
Regime
/
Compensation
)
– this defines the fan speed when defrosting the condensing
unit, recuperator or glycol circuit exchanger. When
Regime
is selected, the speeds stays at the
level set by the regime or other control and when
Compensation
is selected, the speed
switches to a speed compensated per the supply air temperature.
HeatErr
(
Regime
/
Compensation
) – this defines the fan speed during a heating fault. When
Regime
is selected, the speed will stay at the level set by the regime or other control and
when
Compensation
is selected, the speed switches to a speed compensated per the supply
air temperature.
OffShift
(10 °C)
– AC unit shuts down if the supply air temperature exceeds
HighLimitSupply
+
OffShift
or drops below
LowLimitSupply
–
OffShift
. The purpose is to protect the ventilated
room from becoming too cold or overheating when heating or cooling components fail. This
function can be blocked by specifying an unreasonably large offset value, up to max. 100°C.
Delay
(600 s)
– delay of the AC unit shutdown due to extremely low or high supply air
temperature.
Fresh air
6.5
If the AC unit is equipped with dampers, then information about their status is displayed
here. Control of the dampers can be done based on unit operation, external contact or mixing
request. By default, mixing can be performed based on the current operating regime, the selected
temperature, a user request from the POL822 room unit, or it can be controlled according to the
required temperature as part of a heating or cooling sequence. Mixing can also be affected by
higher priority functions.
The supply and exhaust dampers are normally controlled by the same signal as the mixing
damper, only set in the opposite direction of rotation. For the correct display of damper status and
fresh air quantity, it is necessary to observe the correct configuration of the AC unit dampers
according to the electrical wiring. In the
Off
state of the unit, the supply and exhaust dampers
must be fully closed and the mixing damper fully open.
FreshAir
(%)
– amount of fresh air supplied to the room according to the preset parameters.
State
–displays information about the operation of the dampers:
