Trane Tracer ZN521 Installation And Operation Manual page 57

ASHRAE Cycle 1 38
ASHRAE Cycle 2 38
Baseboard heat 39
Dehumidification 40
Discharge air temperature low
limit 42
DX cooling 39
Economizing 38
Electric heat 39
Exhaust control 35
Face-and-bypass damper 39
Fan off delay 41
Fan operation 35
Fan status 41
Filter-maintenance timer 41
Four-pipe operation 37
Freeze avoidance 41
Freeze protection 42
Heating/cooling mode 34
Isolation valve 39
Modulating-valve calibration 36
Modulating-valve operation 36
Morning cool-down 34
Morning warm-up 34
Occupancy modes 31
Outdoor/return air 37
Peer-to-peer communication 40
Power-up sequence 31
Random start 31
Smart reset 41
Timed override control 32
Two-pipe operation 37
Two-position damper
control 39
Two-position valve
operation 36
Unit protection strategies 40
Valves 36
Zone temperature control 33
,
Service pin button 43 47
Smart reset
,
Diagnostic 41 49
Unit protection 41
Specifications
AC power wiring 10
Agency listing/compliance 7
Clearances 7
Dimensional diagram 7
Dimensions 6
Input/output terminal wiring 10
LonTalk communication wiring
and addressing 11
CNT-SVX07D-EN
Storage environment 6
Transformers 11
Status indicators for operation and
communication
Diagnostics 48
General 43
Green (status) LEDs 47
LEDs 43
Manual output test 43
Red (service) LEDs 47
Service pin button 47
Test button 43
Yellow (communication)
LEDs 48
Storage environment 6
Switching devices
Condensate overflow 9
Current sensing 9
Fan status 9
Freeze protection 9
Low-coil-temperature 9
,
Occupancy 9 14
T
Temperature sensors
Table of options 9
Water and duct 8
Zone 9
Termination resistors 11
–
Test button 43 44
Timeclock 14
Timed override control 32
, ,
Transformers 8 10 11
Troubleshooting
DX cooling 53
Electric heat failure 53
Fans 51
Outdoor air damper 53
Valves 52
Two-pipe operation 37
Two-position damper control 39
Two-position valve operation 36
Types of diagnostics 48
U
UL, <Emphasis>see Agency listing/
compliance
Unit protection strategies
Condensate overflow 41
Discharge air temperature low
limit 42
Fan off delay 41
Fan status 41
Filter-maintenance timer 41
Freeze avoidance 41
Freeze protection 42
Low-coil-temperature
protection 41
Smart reset 41
Unit ventilators 6
Universal 4–20 mA 17
V
Valves
Actuators 9
Calibration of modulating 36
Four-pipe operation 37
General operation 36
Isolation-valve operation 36
,
14
Operation of modulating 36
Operation of two-position 36
Supported applications 6
,
14
36
Tri-state modulating 6
Troubleshooting 52
Two-pipe operation 37
Two-position 6
W
Water and duct temperature
sensors 8
Wiring
BAS communication 11
Compliance with National
Electrical Code 10
Input/output terminals 10
LonTalk communication 11
Minimum requirements 19
Requirements and options 19
30
Wiring diagrams 19
Electric heat unit 27
Electric heat unit with DX
cooling 26
Four-pipe heating/cooling unit
with auto changeover 24
Four-pipe heating/cooling unit
with face-and-bypass
damper 30
Four-pipe hydronic heating/
cooling unit 23
Two-pipe heating unit with DX
cooling 25
Two-pipe heating/cooling unit
with face-and-bypass
damper 29
Index
,
18
, ,
18
, ,
18 36
,
18
,
11
–
–
30
57