Operating Instructions
Busch Temperaturregler
Installation and electrical
connection
Operating Instructions | 1473-1-8396
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8.3
Electrical connection
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1099 UHKEA
1099 UHK
Fig. 6: Connection to a 2-pipe system
1099 UHKEA
1099 UHK
Fig. 7: Connection to a 4-pipe system
Terminal designation
Assignment
Input 1099 UHK for switchover to cooling mode
Output for controlling the heating load
Output for controlling the cooling load
Note
At high humidity (tendency toward thunder storms) during cooling mode, attention should be paid
to dew formation on the cooled surface.
Cooling should be reset early or switched off completely to prevent moisture from damaging the
cooled surface.
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