Installation and Maintenance Manual

UV-SVN02C-EN 5
General Instructions . . . . . . . . . . . . . . . . . 66
BACnet MS/TP Link . . . . . . . . . . . . . . . . . 66
Power Supply . . . . . . . . . . . . . . . . . . . . . . 67
Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Pre-Start-up Checklist . . . . . . . . . . . . . . . 69
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Tracer ZN520 Unit Startup . . . . . . . . . . . . 70
Tracer UC400 Unit Startup . . . . . . . . . . . 70
General Information . . . . . . . . . . . . . . . . . 70
Fan Mode Switch Operation . . . . . . . . . . 70
Tracer ZN520 Operation . . . . . . . . . . . . . 70
UC400 Controller Operation . . . . . . . . . . 71
Tracer ZN520 Sequence of Operation . . . 71
Cooling Operation (Tracer ZN520) . . . . . 72
Fan Mode Operation (Tracer ZN520) . . . 73
UC400 Sequence of Operation . . . . . . . . . 78
Power-up Sequence (UC400) . . . . . . . . . 78
Random Start (UC400) . . . . . . . . . . . . . . . 78
Occupancy Modes (UC400) . . . . . . . . . . . 78
Timed Override Control (UC400) . . . . . . 79
Zone Temperature Control (UC400) . . . . 79
Discharge Air Tempering (UC400) . . . . . 80
Heating or Cooling Mode (UC400) . . . . . 80
Entering Water Temperature Sampling Func-
tion (UC400) . . . . . . . . . . . . . . . . . . . . . . . 80
Fan Operation (UC400) . . . . . . . . . . . . . . 80
Exhaust Control (UC400) . . . . . . . . . . . . . 81
Valve Operation (UC400) . . . . . . . . . . . . . 81
Modulating Outdoor/Return Air Damper
(UC400) . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Two-position Control Of A Modulating Out-
door Air Damper (UC400) . . . . . . . . . . . . 83
Electric Heat Operation (UC400) . . . . . . . 83
Dehumidification Operation (UC400) . . . 83
Peer-to-peer Communication (UC400) . . 83
Unit Protection Strategies (UC400) . . . . . 83
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Service Access . . . . . . . . . . . . . . . . . . . . . 85
Periodic Maintenance . . . . . . . . . . . . . . . 85
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Removal of the Drain Pan . . . . . . . . . . . . .85
Removal of the Fanboard and Coil Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Lubrication: Fan Shaft . . . . . . . . . . . . . . . .86
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Modulating Valves (3-Wire Floating) . . . .87
Preventive Maintenance . . . . . . . . . . . . . . . .87
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Troubleshooting Checklist . . . . . . . . . . . . .88
Output Testing and Diagnostics (Tracer
ZN520)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Output Testing and Diagnostics (UC400) . .93
Output Testing (UC400) . . . . . . . . . . . . . . .93
Diagnostics (UC400) . . . . . . . . . . . . . . . . .93
Troubleshooting (Wireless Controls) . . . . .94
Troubleshooting (Tracer ZN520) . . . . . . .100
Troubleshooting (UC400) . . . . . . . . . . . .101
Troubleshooting (ECM) . . . . . . . . . . . . . .103
General Information (ECM) . . . . . . . . . . .104
Troubleshooting Information (ECM) . . .104
Replacing ECM Components . . . . . . . . . . . .106
Circuit Modules Replacement Notes/Work In-
structions . . . . . . . . . . . . . . . . . . . . . . . . .107
Softsetting the IMC Address of an ECM En-
gine Module . . . . . . . . . . . . . . . . . . . . . . .107
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Wallboxes . . . . . . . . . . . . . . . . . . . . . . . . . . .109
General Instructions . . . . . . . . . . . . . . . . .109
Installation in Masonry Walls . . . . . . . . .111
Installation in Curtain Walls . . . . . . . . . .111
UV-SVN02_-EN.book Page 5 Thursday, January 24, 2013 4:48 PM