Installation and Maintenance Manual

UV-SVN03F-EN 5
Pre-Start-up Checklist . . . . . . . . . . . . . . . 71
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Tracer ZN520 Unit Startup . . . . . . . . . . . . 72
Tracer UC400 Unit Startup . . . . . . . . . . . 72
General Information . . . . . . . . . . . . . . . . . 72
Fan Mode Switch Operation . . . . . . . . . . 72
Tracer ZN520 Operation . . . . . . . . . . . . . 72
UC400 Controller Operation . . . . . . . . . . 73
Tracer ZN520 Sequence of Operation . . . 73
Cooling Operation (Tracer ZN520) . . . . . 74
Fan Mode Operation (Tracer ZN520) . . . 75
UC400 Sequence of Operation . . . . . . . . . 80
Power-up Sequence (UC400) . . . . . . . . . 80
Random Start (UC400) . . . . . . . . . . . . . . . 80
Occupancy Modes (UC400) . . . . . . . . . . . 80
Timed Override Control (UC400) . . . . . . 81
Zone Temperature Control (UC400) . . . . 81
Discharge Air Tempering (UC400) . . . . . 82
Heating or Cooling Mode (UC400) . . . . . 82
Entering Water Temperature Sampling Func-
tion (UC400) . . . . . . . . . . . . . . . . . . . . . . . 82
Fan Operation (UC400) . . . . . . . . . . . . . . 82
Exhaust Control (UC400) . . . . . . . . . . . . . 83
Valve Operation (UC400) . . . . . . . . . . . . . 83
Modulating Outdoor/Return Air Damper
(UC400) . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Two-position Control Of A Modulating Out-
door Air Damper (UC400) . . . . . . . . . . . . 85
Electric Heat Operation (UC400) . . . . . . . 85
Dehumidification Operation (UC400) . . . 85
Peer-to-peer Communication (UC400) . . 85
Unit Protection Strategies (UC400) . . . . . 85
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Service Access . . . . . . . . . . . . . . . . . . . . . 87
Periodic Maintenance . . . . . . . . . . . . . . . 87
Preventive Maintenance . . . . . . . . . . . . . 89
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Troubleshooting Checklist . . . . . . . . . . . . 90
Output Testing and Diagnostics (Tracer
ZN520)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Output Testing and Diagnostics (UC400) . 95
Output Testing (UC400) . . . . . . . . . . . . . . .95
Diagnostics (UC400) . . . . . . . . . . . . . . . . .95
Troubleshooting (Wireless Controls) . . . . .96
Troubleshooting (Tracer ZN520) . . . . . . .102
Troubleshooting (UC400) . . . . . . . . . . . .103
Troubleshooting (ECM) . . . . . . . . . . . . . .105
General Information (ECM) . . . . . . . . . . .106
Troubleshooting Information (ECM) . . .106
Replacing ECM Components . . . . . . . . . . . .108
Circuit Modules Replacement Notes/Work In-
structions . . . . . . . . . . . . . . . . . . . . . . . . .109
Softsetting the IMC Address of an ECM En-
gine Module . . . . . . . . . . . . . . . . . . . . . . .110
UV-SVN03_.book Page 5 Thursday, January 24, 2013 5:27 PM