Mandik Climatix, Operating Instructions Manual

Page: 34 / 83

KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
www.mandik.cz
34
Recuperation 6.6
In addition to recovering heat, recuperation can also be used to recover cold. Recuperation
can be implemented by a plate recuperator, rotary recuperator or a glycol circuit.
The motor protection of the rotary recuperator is provided by a motor thermocontact
connected to a frequency converter, if the motor contains one. If the motor does not contain a
thermocontact, it is necessary to connect the appropriate terminals on the frequency converter or
change the parameters of the frequency converter so that the frequency converter does not
monitor the state of the motor thermocontact. The setting of the frequency converter parameters
for a specific job is part of the documentation.

State – displays information about the operation of the recuperator.

Off – recuperator is not used.

Cool – recuperator is used for cooling.

Heat – recuperator is used for heating.

NoCool – recuperator cannot cool because the temperature of the exhaust air is
higher than the outside air temperature.

NoHeat – recuperator cannot heat because the temperature of the exhaust air is
lower than the outside air temperature.

Defrost – recuperator is in its defrost regime.

Err – recuperator is not working properly. The specific fault is listed in the alarm
messages.

Power (%) – displays the current damper opening of the plate recuperator or the rotary
recuperator speed.

MinPower (0%) – minimum power of the heat recovery system at power up.

Ramp (60 s) – time (ramp-up, ramp-down time) for the recuperator control signal to reach the
recuperator speed from 0 V (0% speed) to 10 V (100% speed) and vice versa. The value is only
relevant for a rotary recuperator.

FillGlycol (80%) – this value determines the pressure limit in the glycol circuit at which the
glycol make-up pump will turn on. The pressure in the glycol circuit is measured by a pressure
sensor with a 0-10 V output. The required value is calculated as follows: FillGlycol (%) =
Minimum pressure (Pa) * 100 / sensor range.

Inlet (°C) – current temperature in front of the recuperator at the air inlet.