Mandik Climatix, Operating Instructions Manual

Page: 41 / 83

KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
www.mandik.cz
41

TempFlue – the flue gas temperature exceeds the maximum permitted flue gasses
temperature MaxTempExhaustGases .

Err – gas burner indicates a malfunction or has not ignited.

Burner – displays information about the contact controlling heating.

Off – gas heater contact is open.

On – gas heating contact is on.

Power (%) – current opening of the gas heating valve.

MaxTempExhaustGases (200 °C) – emergency limit of exhaust gas temperature. When it is
reached, the burner is switched off and a fault is signalled.

ExhaustGasesMin (80 °C) – when the flue gas temperature drops below this value, the fan
may shut down.

TimeRangeBurn (40 s) – time it takes for the burner valve actuator to change the valve from
0% to 100%. This value is required for proper three point control of the actuator.

MaxPower (100%) – the maximum power limit of the gas heater can be set here. This feature
is usually used when the fan power is reduced, and the gas heat exchanger may overheat.

ChangePower (30 s) – control output is sent to the gas heater automation at intervals,
allowing rapid changes in power requirements to be filtered out.

PID–Regulation – the default factory set values are: TI = 60 s, KP = 5, TD = 0 s.

PID–FlueGas – contains values that determine the quality and speed of the gas heating power
limit control based on actual and maximum flue gas temperature. The factory default values
are: TI = 60 s, KP = 5, TD = 0 s.

DamperAtHeatExchanger
–
is controlled based on flue gas temperature or pressure to
achieve optimum combustion in normal operation. Another function of the bypass damper is
to ensure minimal condensation of water vapour in the heat exchanger during cold start.

Required (140 °C) – required flue gas temperature to which the damper position is
controlled. Control to this value is only applied when the flue gas temperature reaches 40
°C below the required temperature to allow the heat exchanger to warm up as quickly as
possible. If the flue gas temperature exceeds MaxTempExhaustGases , the exchanger
damper is closed to cool the exchanger.

Required (300 Pa) – required pressure at the flue gas exchanger at which the damper
position is controlled. The purpose is to lead a quantity of air through the heat exchanger