Trane Tracer AH540 Setup And Operation page 127

setpoint and limit configuration,
79
DX cooling, 24
coil defrost input, 66
compressor circuit wiring, 67
configuration, 77
defrost operation, 65
evaporator refrigerant
temperature, 65
evaporator refrigerant
temperature effect, 66
overview, 64
split-system applications, 66
stage output, 15
troubleshooting, 98
DX split-system cooling
applications, 66
compressor stages and circuits, 66
frost protection, 67
minimum on/off timers, 67
E
economizing, 20, 59
electric heat operation
discharge air temperature control,
61
overview, 60
space temperature control, 61
troubleshooting, 99
electric heat, staged
binary output functions and
locations, 15
configuration, 74
DX cooling, 65
overview, 61
using binary outputs, 61
using sequencer, 62
emergency override, 71
Emergency Override diagnostic, 91
Entering Water Temp Failure
diagnostic, 21, 92
entering water temperature
input, 21
two-pipe changeover, 53
entering water temperature
sampling
configuration, 80
flowchart, 105
operation, 53
three-way valve applications, 53
two-way valve applications, 54
Evap Refrigerant Temp Failure
diagnostic, 22, 92
evaporator refrigerant temperature
effect on DX cooling, 66
input (IN13), 22
operation, 65
Exhaust Fan Air Flow diagnostic, 60
exhaust fan. See fan (exhaust)
CNT-SVX05B-EN
F
face-and-bypass
analog output (AO4), 16
damper operation, 55
heat modulation, 80
heating, 70
fan (exhaust)
operation, 59
start/stop output (BO2), 15
status input (IN12), 27
fan (supply)
constant-volume operation, 50
general operation, 50
ignore time configuration of status
input, 80
mode switch input, 19
mode switch on zone sensor, 28
motor thermal protection, 70
speed output, 16
status, 70
status input, 26
troubleshooting, 93
variable-air-volume operation, 51
fan (supply)/heat source
blow-through, 74
draw-through, 74
filter status, 70
input (IN11), 26
free cooling. See economizing
freeze avoidance, 70
setpoint configuration, 80
valve configuration, 80
valve cycling, 52
freezestat, 24
G
generic binary input (IN9), 25, 26
Generic Temperature Failure
diagnostic, 22, 92
generic temperature input, 22
H
heat output (water, steam, electric
heat sequencer), 16
heat/cool changeover operation
space temperature control, 34, 35
heating operation
configuration, 74
space temperature control, 36
heating/cooling mode control
discharge air temperature, 39
space temperature, 32
heating/cooling operation, two-pipe
changeover, 53
humidity
input, 20
sensor, 20
sensor mA values, 107
Humidity Input Failure diagnostic,
21, 92
I
installing stand-alone operator
display, 9
Internal setpoint adjustment, 36
Invalid Unit Configuration
diagnostic, 91
L
LEDs
binary outputs (green), 86
Comm (yellow), 88
interpreting, 86
Service (red), 87
Status (green), 87
Local Fan Switch Failure diagnostic,
92
local occupancy mode request, 25
local setpoint input, 18
Local Space Setpoint Failure
diagnostic, 92
local zone sensor fan switch
configuration, 78
location label, 74
location of
LEDs, 83
Service Pin button, 83
Test button, 83
LonMark profile
Discharge Air Controller (DAC), 1
Space Comfort Controller (SCC), 1
Low Exhaust Fan Air Flow
diagnostic, 27, 91
Low Supply Fan Air Flow diagnostic,
26, 50, 91
Low Temp Detect diagnostic, 24, 91,
92
low-temperature detection
as unit protection strategy, 70
device (freezestat), 24
input, 24
M
Maintenance Required diagnostic,
70, 92
manual output test
as protection strategy, 71
performing, 84
sequence, 85
Manual Output Test diagnostic, 91
Index
117