Filter
Top Products
Index
42 CNT-SVX07C-EN
Switching devices
Condensate overflow, 4, 14
Current sensing, 4
Fan status, 4
Freeze protection, 4, 14
Low-coil-temperature, 4
Occupancy, 4, 15
T
Temperature sensors
Table of options, 5
Water and duct, 4
Zone, 4
Termination resistors, 9
Test button, 51–52
Timeclock, 15
Timed override control, 37
Transformers, 4, 7, 8
Troubleshooting
DX cooling, 65
Electric heat failure, 65
Fans, 63
Outdoor air damper, 66
Valves, 64
Two-pipe operation, 43
Two-position damper control, 46
Two-position valve operation, 43
Types of diagnostics, 58
U
UL, see Agency listing/compliance
Unit protection strategies
Condensate overflow, 49
Discharge air temperature low
limit, 50
Fan off delay, 49
Fan status, 49
Filter-maintenance timer, 50
Freeze avoidance, 50
Freeze protection, 50
Low-coil-temperature
protection, 49
Smart reset, 49
Unit ventilators, 1, 21
Universal 4–20 mA, 19
V
Valves
Actuators, 4
Calibration of modulating, 42
Four-pipe operation, 43
General operation, 42
Isolation-valve operation, 43
Operation of modulating, 42
Operation of two-position, 43
Supported applications, 1, 21,
42
Tri-state modulating, 1, 21, 42
Troubleshooting, 64
Two-pipe operation, 43
Two-position, 1, 21
W
Water and duct temperature
sensors, 4
Wiring
BAS communication, 9
Compliance with National
Electrical Code, 7, 8, 9
General, 7–9
Input/output terminals, 7
LonTalk communication, 9
Minimum requirements, 22
Requirements and options,
22–34
Wiring diagrams, 22–34
Electric heat unit, 30
Electric heat unit with DX
cooling, 29
Four-pipe heating/cooling unit
with auto changeover, 27
Four-pipe heating/cooling unit
with face-and-bypass damper,
33
Four-pipe hydronic heating/
cooling unit, 26
Two-pipe heating unit with DX
cooling, 28
Two-pipe heating/cooling unit
with face-and-bypass damper,
32
Two-pipe hydronic heating/
cooling unit with auto
changeover, 25
Two-pipe hydronic-cooling unit,
23
Two-pipe hydronic-heating unit,
24
Z
Zone humidity
Sensor, 5
Zone temperature
Input, 16
Sensors, 4
Zone temperature control, 38
Zone temperature failure
diagnostic, 59