Table of Contents
RT-SVX21N-EN 3
Model Number Description ............... 4
Model Number Description - 17 Plus ...... 6
General Information ..................... 8
Unit Dimensions ........................ 13
Installation ............................. 20
Pre-Installation ....................... 20
Procedure ........................... 20
Foundation .......................... 22
Ductwork ............................ 22
Roof Curb ........................... 24
General Unit Requirements ............ 25
Horizontal Discharge Conversion (3 Through 5
Ton Units)
........................... 27
TCO-1 Instructions .................... 27
Horizontal Discharge Conversion (6 Through
10 Ton Units)
........................ 27
TCO1 Instructions ..................... 28
Return Air Smoke Detector ............. 29
Main Electrical Power Requirements .... 30
Through-the-Base Gas Installation ...... 30
Requirements for Gas Heat ............ 30
Condensate Drain Configuration ........ 31
Filter Installation ...................... 32
Field Installed Power Wiring ........... 32
Main Unit Power ..................... 32
Smoke Detector Customer Low Voltage Wir-
ing
.................................. 38
Space Temperature Averaging (ReliaTel™ On-
ly)
.................................. 38
Pre-Start ............................... 42
Voltage Imbalance .................... 42
Electrical Phasing (Three Phase Motors) .42
Test Modes .......................... 44
Unit Start-Up ........................... 46
Verifying Proper Air Flow .............. 46
Maintenance ........................... 54
Fan Belt Adjustment - Belt Drive Units ... 54
Monthly Maintenance ................. 54
Annual Maintenance .................. 56
Troubleshooting ........................ 58
ReliaTel™ Control .....................58
System Status Checkout Procedure ......58
Resetting Cooling and Ignition Lockouts ..59
Zone Temperature Sensor (ZTS) Service Indi-
cator
.................................60
Clogged Filter Switch ..................60
Fan Failure Switch .....................60
Condensate Overflow Switch ...........60
Zone Temperature Sensor (ZTS) Tests ...60
Unit Economizer Control (ECA) Troubleshoot-
ing
...................................61
Resetting Cooling and Ignition Lockouts ..62
Unit Economizer Control (ECA) Test Proce-
dures
................................62
Troubleshooting procedures for Direct Drive
Plenum Fan
...........................63
Unit Wiring Diagrams Numbers ...........64
Limited Warranty ........................66
Combination Gas Electric Air Conditioner .66
Combination Gas Electric Air Conditioner .66
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