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KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
16
or exhaust air temperature sensor. Multiple room sensors can be installed and the resulting
room temperature is determined by the
MoreRoomSensors
parameter.
RoomUnit
– temperature of the sensor located in the room unit. The room unit must be
configured to display this temperature.
Preheat
– this sensor is used when the supply air is required to be preheated and is placed
between preheating and reheating or cooling.
Supply
– in most cases, at least this sensor is configured to measure the supply air
temperature. The temperature sensor is placed after the last heating or cooling component
before the air enters the room. The maximum duct temperature is set at 50 °C per health and
fire regulations.
Flue
– this sensor must be configured if the unit contains a gas heater as it ensures the proper
operation and protection of the gas exchanger, including the emergency function. It is also
used to control the gas exchanger bypass damper to mitigate condensation and heat the
exchanger faster when the gas heater starts. The temperature sensor is placed in a sump
welded above the flue way base. The QAZ21.5120 sensor from Siemens with the NI1000
measuring element is supplied as standard.
Outdoor
– should also be configured for all the air conditioning units to ensure correct
operation of the control system especially when the unit is started up or shut down. The
sensor should be located outdoors so that it is protected from weather influences that would
improperly affect the M&C. For example, direct sunlight, rain, frost, wind, etc. The outdoor
sensor is also used to control air circulation with a mixing damper or to efficiently use the
recuperator. This sensor should always be configured as it is often tied to protection and
start-up functions.
HeatingWaterDrain
– if the unit contains a water heater, then a temperature sensor must be
configured to measure the heating water temperature. The heating water drain temperature
sensor ensures proper operation and protection of the water heat exchanger. It is placed on
the water exchanger discharge piping, called the return piping, so that it measures the actual
temperature of the discharged water.
HeatingWaterSupplied
– this sensor is placed on the heating water supply line to measure
the actual temperature of the water supplied to the water exchanger. It can be used to signal
a heating water requirement to the boiler room.