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).
Содержание UA 400
Страница 26: ...Firmware V3 15 21 04 2021 26 401 Solenoid valve Relay for Solenoid Valve 1...
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Страница 324: ...Firmware V3 15 21 04 2021 324 401 COOLING 1 Pos XXXXX Hystersis R4 1 xxx K Supply air temperature hysteresis setpoint...
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Страница 361: ...Firmware V3 15 21 04 2021 361 401 FANS 2 Pos XXXXX Fan Delay Fan delay...
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Страница 399: ...Firmware V3 15 21 04 2021 399 401 12 2 Mechanical Data DIN rail mounting A Connector set with cable All dimensions in mm...