Mandik Climatix, Operating Instructions Manual

Page: 22 / 83

KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
www.mandik.cz
22

StartDuration (3min) – ensures a smooth temperature start of the unit depending on the
unit's mixing damper. During this time, the calculated supply air temperature is equal to the
required temperature. The unit start consists of 3 phases:
1. After the regime selection, the unit switches to Start and waits with the fan start for
the dampers to move to the required position and for the permission from the boiler
room, if configured. The heat recovery performance is 100% at start up if the heat
recovery temperature conditions allow. Depending on the outside temperature, water
preheat will start if necessary.
2. The fans are then run at start-up output for the duration of the start-up to allow the
control to eliminate the outdoor temperature sensor location while acclimating the
unit components.
3.
At the end of the start-up period, the fans are started up to the required operating
output and the control of the components based on their PID control is also started up.

LTFilter (0.02 °C/sec) – filters the step changes in the required temperature and the calculated
supply air temperature from the PID cascade control. The standard setting for the linear
temperature change rate is 2 hundredths of a degree per second.

EnableRunning ( All / Heat +/ Cool +/ Heat / Cool ) – here you can restrict the AC unit running to the
Heat or Cool states:

All – the unit behaves as standard, the fans are on in all three states of Ventilate , Heat ,
and Cool .

Heat + – unit is only operated in the Heat and Ventilate states. In the Cool state, the AC
unit is switched off.

Cool + – the unit is operated in the Cool and Ventilate states. In the Heat state, the AC unit
is switched off.

Heat – the unit behaves as a pure heater, the fans are only switched on in the state of
Heat . In the Cool state, the AC unit is switched off.

Cool – the unit behaves as pure cooling, the fans only turn on in the state of Cool . In the
Heat state, the AC unit is switched off.

MaxSupplyTemp (50 °C) – safety value of supply air temperature. If exceeded, the gas or
electric heating will be switched off if configured.