Tracer® ZN.010

and ZN.510

Table 13. Test Sequence for 1-Heat /1-Cool Configurations

Steps

Fan

Cool Output

Heat Output

Damper

 

BOP1-3

BOP4 (1)

BOP5

BOP6

1. Off

Off

Off

Off

Closed

2. Fan High

High

Off

Off

Closed

3. Fan Medium

Medium

Off

Off

Closed

4. Fan Low

Low

Off

Off

Closed

5. Cool

High

On

Off

Closed

6. Heat

High

Off

On

Closed

7. Fresh Air

High

Off

Off

Open

Damper (3)

 

 

 

 

8. Exit

(2)

 

 

 

 

 

 

 

 

Notes:

(1)At the beginning of step 2, the controller attempts to clear all diagnostics.

(2)For all 1-heat/1-cool applications including 2-pipe changeover, BOP4 energizes in the cooling test stage and BOP5 energizes in the heat test stage.This occurs even though during normal 2-pipe changeover operation BOP4 controls the unit valve for both cooling and heating.

(2)After the Fresh Air Damper step, the test sequence performs the Exit step.This initiates a reset and attempts to return the controller to normal operation.

(3)The fresh air damper (BOP6) only energizes during this step if binary output 6 has been configured as a fresh air damper.

UNT-IOM-6

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Trane LO manual BOP5 BOP6

LO specifications

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