KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
20
If the supply air temperature drops below the
LowLimitSupply
–
CascadeNonSensitive
value, then all the cooling components of the unit will immediately shut down, or the
heating components of the unit will turn on.
ShiftHC
(2 °C)
– shifts the required supply air temperature calculated by the cascade PID
control for the
Heat
and
Cool
to achieve energy savings:
Heat
state – supply air temperature setpoint range is between
HighLimitSupply
– (
ShiftHC
/ 2)
and
LowLimitSupply
– (
ShiftHC
/ 2).
Cool
state – supply air temperature range is between
HighLimitSupply
+ (
ShiftHC
/ 2)
and
LowLimitSupply
+ (
ShiftHC
/ 2).
HighSplyOff
(
No/
Recuperation
/Heating
)
– determines how much of the heating section will
shut off when the upper limit of supply temperature plus insensitivity is exceeded. This
feature is particularly applicable to condensing units with non-standard controls where the
recuperation unit shuts down instead of the condensing unit. This will reduce the frequency of
condensing unit shutdowns.
ClimaTemp
(
Outdoor
/
Room
/
Supply
/
Extract
/
Preheat
/
Exhaust
/
Room1
/
Room2
/
Season
/
Contact
)
– selects a temperature sensor or other condition for the controller
to decide whether to heat or cool the unit.
When either temperature is selected, the required temperature is compared to the
selected temperature.
Season
– the controller heats or cools based on the parameters set in item
TemperatureSeason
. In the
Summer
temperature season, the unit only cools and in the
Winter
, it only heats.
Contact
– the climate temperature is replaced by an external contact switching the
heating or cooling regimes from the superior system (
AssignmentInputs/Outputs
ExternalSwitches
Cool
/
Heat
). By default, the unit is switched to cooling regime when
the contact is open and to heating regime when the contact is open.
ClimaShift
(0 °C) –
only has meaning if either temperature is selected as
ClimaTemp
. For
example, with the selected outdoor climate temperature, a required room temperature of 23
°C and a climate shift of 2 °C, climate insensitivity of 0 °C will result in an outdoor limit
temperature for switching between heating and cooling of 25 °C.
ClimaNonSensitive
(1 °C) –
only has meaning if either temperature is selected as
ClimaTemp
.
It is used to specify the limit temperature at which the unit should heat and at which it should