Trane RT-SVX19A-E4 - Manual (Page 48)

Operation
RT-SVX19A-E4 48
Figure 22 - Minimum fresh air adjustment
1 = ECA board
1
2
3
4
1
2
1
2
1
2
1
2
1
2
1
2
1
2
EXF EXF
MAT
OAH AH/
OAE
OAT
RAT
RAH AH/
RAE
DCV DCV
2-10 VDC 2-10 VDC
FEED FEEDBACK
INPUT INPUT
+
-
+
-
2-10 VDC 2-10 VDC
CONT ONTROL
OUTPUT OUTPUT
MIN POS. MIN POS.
SETPOINT SETPOINT
0-50% 0-50%
ABCD ABCD
SE SETTING TINGS
CO2 "PU O2 "PU RGE GE"
SETPOINT SETPOINT
ADJUS ADJUS TMEN MENT
500-1500 PPM 500-1500 PPM
GREEN GREEN
LED LED
POWER EXH WER EXH AUS UST
CON ONTACTS
MIXED AIR SENSOR INPUT MIXED AIR SENSOR INPUT
COMMO OMMO N
COMMO OMMO N
OHS INPUT OHS INPUT
NOT USED- T USED- OAT I T IS
CONNECTED ONNECTED TO O RTR TRM
RA INPU A INPU T
COMMO OMMO N
COMMO OMMO N
RHS INPUT RHS INPUT
CO2 SENSOR INPU O2 SENSOR INPU T
COMMO OMMO N
P P1 P1
REM REMOTE
MINIMUM
MINIMUM
POTENTIOMETE
TENTIOMETE R
SHO SHORTED=C TED=CLOSE OSED
OPEN=ON B OPEN=ON B OARD P ARD POT.
270 omega = 50% 270 omega = 50%
WHT WHT
RED RED
BLUE
MOD MODBUS
-
+
COMMO OMMO N
24 24VAC
+
1
POWER EXHAUST
CONTACTS
MIXED AIR SENSOR
INPUT COMMON
COMMON
OHS INPUT
NOT USED-OAT IS
CONNECTED TO
RA INPUT
COMMON
COMMON
RHS INPUT
CO 2 SENSOR INPUT
COMMON
SHORTED=CLOSED
OPEN=ON CARD POT.
270 omega = 50%
REMOTE
MINIMUM
POTENTIOMETER
CO2 “PURGE”
SETPOINT
ADJUSTMENT
500-1500 PPM
GREEN
LED
COMMON
24VAC
MODBUS
2-10 VDC
CONTROL
OUTPUT
2-10 VDC
FEEDBACK
INPUT
MIN POS.
SETPOINT
0-50%
ABCD
SETTINGS
WHT
RED
BLUE