Function of UA 410 D
24
Firmware V1.40 - Doku 2.1 06. April 2016
4.2.3
Defrosting
On grounds of fire prevention, during the planning of the installation a device for shutting down the
defrost heating in the event of excessive temperature (e.g. ”KLIXON”) must be provided.
Controller type: UA 111 and UA 111 XP
These two controller types do
not
have a defrost heater. Off-cycle defrosting is controlled by the supply air sen
sors.
Controller type: UR 141
Defrosting frees the evaporator of ice forming from normal operation. Defrosting takes place either by heating
the evaporator (electric heating element) or off-cycling the compressor. During defrosting, temperature control of
the refrigeration point is inactivated.
Defrosting has a different effect in single-zone or two-zone operation. In single-zone operation, sensors R1.1
and optionally R1.2 (only when connected) act on Defrost Relay 1.
R1.1:
Defrost sensor
(Terminal Z31/Z32)
R1.2:
Optional defrost sensor
(Terminal Z51/Z52)
Valve 1:
Solenoid Valve 1 relay
(Terminal 25/26/28)
Defrost heater 1: Defrost relay 1
(Terminal 43/44)
On the UR 141, parameters cannot be set for a second defrost stage or heating circuit control.
Содержание UA 410 D
Страница 8: ...vi Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 22: ...Application of UA 410 D 14 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 74: ...Pin and Terminal Assignments of UA 410 D 66 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 84: ...Operation of UA 410 D 76 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 132: ...Decommissioning and disposal 124 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 140: ...Specifications of UA 410 D 132 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...
Страница 142: ...Order numbers and accessories of UA 410 D 134 Firmware V1 40 Doku 2 1 06 April 2016 Notice ...