Function of UA 300 D
18
Version 2.03 27. Juni 2008
3.2.5
Fan control with coldroom controllers
Controller type: UR 141
S
LT coldrooms (low−temperature coldrooms, UR 141 Zone 1 only)
The fan is normally switched ON and OFF with the cooling relay. During defrosting the fans are OFF.
When the fan load time (start delay) is set greater than 0, the fan stops together with cooling. When temperature
again exceeds the setpoint plus hysteresis, only the fan starts at first. After the fan has started, cooling does not
restart until the set time delay has expired.
This second instance will normally occur following defrosting. The fan is stopped during defrosting and restarts
after defrosting is terminated when temperature on the connected evaporator sensor (R1.1/R1.3) drops below
the fan delay temperature setting. The fan restarts immediately following defrosting when the "Fan Delay" para-
meter is set to "".
Verdampfer 1
Evaporator 1
Valve 1
Return
air
R1.1
Fan 1
Supply
air
UA 300 D
ZNR.
51203
72
830
E0
Refrigeration point
controller
R1.1: Defrost
sensor
(Terminal
Z31/Z32)
Valve 1:
Solenoid Valve 1 relay
(Terminal 25/26/28)
Fan 1:
Fan control relay
(Terminal 63/64)
Содержание UA 300 D
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Страница 8: ...System Design of UA 300 D 2 Version 2 03 27 Juni 2008 Notice ...
Страница 40: ...Installation and Startup of UA 300 D 34 Version 2 03 27 Juni 2008 Notice ...
Страница 54: ...Operation of UA 300 D 48 Version 2 03 27 Juni 2008 Notice ...
Страница 100: ...Menu structure UA 300 D Controller type UR 141 94 Version 2 03 27 Juni 2008 Notice ...
Страница 108: ...Specifications of UA 300 D 102 Version 2 03 27 Juni 2008 Notice ...