KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
42
such that optimum heat transfer occurs. The value should correspond to the value in the
technical specification of the AC unit.
PID–Damper
– contains values that determine the quality and speed of the gas heating
bypass damper position control based on the pressure or temperature of the flue gas. PID
control is not applicable at flue gas temperatures below 80 °C (damper 100% open). The
factory default values are:
TI = 60 s, KP = 2, TD = 0 s
.
Convector
(
Off
/
On
)
– is a device that ensures suitable thermal conditions for burner ignition
and protects it from freezing. If an outdoor temperature sensor is not installed, then the flue
gas temperature sensor is used for protection, which is placed in the base of the chimney
outdoors. A practical implementation is a 230V socket controlled from the controller, which is
located in the burner electronics chamber. An electric radiator or heating cable can be
connected to the socket. If the power supply to the control cabinet or controller is switched
off, this protection will not work! It is mainly used on external AC unit designs.
SetOn
(4 °C,
BurnOn
/
Always
/
BurnOff
)
– determines the conditions under which the
burner box is to be heated. The first condition is that the outside temperature or flue gas
temperature falls below the set limit value. The second condition is set according to:
BurnOn
–
convector will only be switched on when the gas heating is switched on and
the temperature is low.
Always
–
convector always switches on at low temperature, regardless of the gas
heating status.
BurnOff
–
convector will only switch on when the gas heating is switched off and the
temperature is low.
Delay
(10 min)
– parameter for the delay of switching the convector on and off.
Water cooling
6.10
Water cooling is controlled based on the selected regime and 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.
If the water cooling fails, the fan speed may be reduced according to parameter
ComponentsMachine
Fans
CoolError
=
Compensation
. This condition is indicated as
AuxilieryMode
–
CompenssationSpeed
on the controller display in the main menu.
