Trane Voyager 1 Rooftop Unit TSD - Manual (Page 51)

Operation
51 RT-SVX20A-E4
To check the damper is functioning
correctly, the ECA is equipped with
an indicator light in the middle of
the board. This light operates as in
Table 42. Table 47 - ECA board LED
While setting the minimum position
the damper may move towards the
new setting in several small steps.
Once the damper has remained in
the same position for 10 to 15
seconds it can be assumed it is in
the new position.
OFF: No Power or Failure
ON: Normal, OK to Economize
Slow Flash:
Normal, Not OK to
Economize
Fast Flash: Communications Failure
Pulse Flash: Error Code
1 Flash: Actuator Fault
2 Flashes: CO 2 Sensor
3 Flashes: RA Humidity Sensor
4 Flashes: RA Temp Sensor
5 Flashes: OA Quality Sensor
6 Flashes: OA Humidity Sensor
7 Flashes: OA Temp Sensor
8 Flashes: MA Temp Sensor
9 Flashes: RAM Fault
10 Flashes: ROM Fault
11 Flashes: EEPROM Fault
Figure 31 - Minimum fresh air adjustment
1 = ECA board
1
2
3
4
1 1
2
1 1
2
1 1
2
1 1
2
1 1
2
1 1
2
1 1
2
EXF EXF
MAT MAT
OAH/ OAH/
OAE
OAE
OAT OAT
RAT RAT
RAH/ RAH/
RAE
RAE
DCV DCV
2-10 VDC 2-10 VDC
FEEDBACK FEEDBACK
INPUT INPUT
+ +
-
+ +
-
2-10 VDC 2-10 VDC
CONTROL CONTROL
OUTPUT OUTPUT
MIN POS. MIN POS.
SETPOINT SETPOINT
0-50% 0-50%
ABCD ABCD
SETTINGS SETTINGS
CO2 "PURGE" CO2 "PURGE"
SETPOINT SETPOINT
ADJUSTMENT ADJUSTMENT
500-1500 PPM 500-1500 PPM
GREEN GREEN
LED LED
POWER EXHAUST POWER EXHAUST
CONTACTS CONTACTS
MIXED AIR SENSOR INPUT MIXED AIR SENSOR INPUT
COMMON COMMON
COMMON COMMON
OHS INPUT OHS INPUT
NOT USED-OAT IS NOT USED-OAT IS
CONNECTED TO RTRM CONNECTED TO RTRM
RA INPUT RA INPUT
COMMON COMMON
COMMON COMMON
RHS INPUT RHS INPUT
CO2 SENSOR INPUT CO2 SENSOR INPUT
COMMON COMMON
P P1 P1
REMOTE REMOTE
MINIMUM
MINIMUM
POTENTIOMETER
POTENTIOMETER
SHORTED=CLOSED SHORTED=CLOSED
OPEN=ON BOARD POT.
OPEN=ON BOARD POT.
270 omega = 50%
270 omega = 50%
WHT WHT
RED RED
BLUE BLUE
MODBUS MODBUS
-
+
COMMON COMMON
24VAC 24VAC
+
1