ECKELMANN UA 400 - Cold-Room Without Defrost Heater - Controller Type UR 141 NK (NT) Only; Heating Circuit (Controller Type UR 141 TK (LT) or NK (NT) Only)

Firmware V3.15
21.04.2021
60/401
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5.5.9.2 Cold-room without defrost heater - Controller type UR 141 NK (NT) only
Asarulethefancontinuesrunningduringcoolinganddefrosting.WhentheOverrun Timeparameterisset
greaterthan0minutesandtheFan Overrun(seemenu2-3-1)parameterissetotherthanto"--",thefanstarts
simultaneously with cooling and stops after a delay when cooling is stopped. The fan stop delay is dependent
on two conditions, both of which must be satisfied:
Thesettime-controlledfandelay(parameterFan Delay) must have expired.
Thesetthermalfandelay(parameterFan Overrun) of the fans must be obtained or exceeded on the
evaporator sensor.
Example 1:Energy-optimized operation - latent heat utilization - factory settings
Thermalfandelaydeactivated(parameterFan Overrunsetto--,menu2-3-1..2-3-4)Fantimedelay=0min.
(parameterOverrun Time, menu 2-3-1...2-3-4)
Case 1: If the time delay is exceeded during cooling operation after switching off the cooling relay and the
evaporator sensor < t
Fan
, the fan continues to run until the evaporator sensor reaches the set temperature.
The fan continues running during defrosting
Case 2: If the evaporator sensor temperature is already greater than t
Fan
duringcoolingoperationafter
switchingoffthecoolingrelayandthedelaytimehasnotexpired,thefancontinuestorununtilexpiryofthe
delay time. The fan continues running during defrosting
Example 2:All fan delays inoperative
Thermalfandelaydeactivated(parameterFan Overrunsetto--,menu2-3-1..2-3-4)Fantimedelay=0min.
(parameterOverrun Time, menu 2-3-1...2-3-4)
During cooling and defrosting the ventilator runs without interruption (continuous operation).
5.5.9.3 Heating circuit (controller type UR 141 TK (LT) or NK (NT) only)
Fan control changes as follows: Zone 1 fan always starts together with the heater relay. If the temperature on
R1.1 is higher than the fan delay temperature, the Zone 1 fan will stop with the heater relay. The starting
conditions stated above apply equally to this condition, meaning that the fan will start when at least one of
these conditions is satisfied. The fan relay is the normally open type. The fan relay operates according to the
normally open principle (relay is activated, normally open contact closes).