Terminal Unit

Control (TUC)

Table 39. Autocycle Test Staging

Stage

LEDs (1)

 

 

Fan-Coil Output Exercised

 

1

2

3

4

 

0

 

 

 

 

Off

1

 

 

 

λ

Fan low speed

2

 

 

λ

 

Fan medium speed

3

 

 

λ

λ

Fan high speed

4

ϒ λ

 

 

Economizer/damper

5

ϒ λ

ϒ λ

Cooling valve

6

ϒ λ

λ

ϒ

Heating valve

7

ϒ λ

λ

λ

Electric heat stage 1

8

λ ϒ

ϒ

ϒ

Electric heat stage 2

9

λ ϒ

ϒ

λ

Not used

10

λ ϒ

λ

ϒ

Reheat

11

λ

ϒ

λ

λ

Not used

12

λ λ

ϒ

ϒ

Not used

13

λ

λ

ϒ

λ

Not used

14

λ

λ

λ

ϒ

Not used

15

 

 

 

 

Not used

(1)λ = the LED is illuminated ϒ= the LED is off

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Trane LO manual Autocycle Test Staging Stage LEDs Fan-Coil Output Exercised

LO specifications

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