KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
35
AftRecup
(°C)
– current temperature after the recuperator at the air supply.
RecuperatorExhaust
(°C)
– current temperature after the recuperator on the air exhaust.
PID–Regulation
– the factory default values are:
TI = 300 s, KP = 4, TD = 0 s
.
MaxPower
(0%)
– maximum speed of the rotary recuperator motor.
SpeedMonitoring
(240 s)
– applies only to rotary recuperators equipped with a pulse speed
sensor. If the sensor does not detect a rotating recuperator during this time, then a
recuperation fault is declared.
Anti–FreezeProtection
– anti-freezing protection of the recuperator can be provided by a
manostat with digital or analog output, monitoring the air pressure before and after the
recuperator at the air supply or exhaust. Or it is secured via a temperature sensor located
behind the recuperator at the air inlet or outlet. If both temperature sensors are fitted, then
only the temperature sensor on the air outlet contributes to frost protection. Both methods
can be combined. When the recuperator freezes, the bypass damper of the plate recuperator
opens or the rotary recuperator speed is reduced to the minimum value. The mixing damper
opens to 100%. At the same time, the fan speed can be adjusted according to the setting of
the parameter
ComponentsMachine
Fans
Defrost
= „
Compensation
“
. The parameters
of the recuperator frost protection are:
Press
(Pa) –
current pressure measured by manostat with analog output.
OG
(Pa) –
pressure value above which the recuperator frost protection is activated.
Temperature
(°C)
– if the current temperature of any of the temperature sensors behind
the recuperator at the supply or exhaust air is less than this value, then the recuperator
frost protection will be activated.
Water heating
6.7
Water heating is controlled based on the selected regime and the required temperature in
conjunction with the temperature sensors. As standard, a quality control with a three-way valve
and an electric water pump are used. Anti-frost protection is provided by an anti-frost thermostat,
a temperature sensor for discharge or supply water and a temperature sensor for supply or
outside air.
Emergency frost protection
is provided via the frost protection thermostat. The frost
protection thermostat shall signal a drop in supply air temperature below the thermostat setpoint,
