4 RT-SVX21P-EN
Table of Contents
Introduction ............................. 2
Warnings, Cautions, and Notices ........ 2
Important Environmental Concerns ..... 2
Important Responsible Refrigerant Practices
2
Copyright ............................. 3
Model Number Description ............... 6
Model Number Notes ................. 7
Model Number Description - 17 Plus ...... 8
Model Number Notes ................. 9
General Information .................... 10
Unit Inspection ..................... 10
Storage ........................... 10
Unit Nameplate .................... 10
Compressor Nameplate .............. 10
Microchannel Condenser Barcode ID . . . 10
Unit Description .................... 10
Economizer Control Actuator (Optional) 10
System Input Devices & Functions ..... 11
Low Pressure Control ................ 12
High Pressure Control ............... 12
Power Exhaust Control (Optional) ..... 12
Lead/Lag Control (Dual Circuit Only) . . . 12
Evaporator Frost Control ............. 13
Discharge Line Temp Switch (DLTS) . . . 14
Smoke Detector Sensor (Optional) ..... 14
Phase Monitor ..................... 14
Single Zone Variable Air Volume / Displace-
ment Ventilation (Optional) ........... 14
Human Interface - 5 Inch Color Touchscreen
(Optional) ......................... 14
Unit Dimensions ........................ 15
Installation ............................. 22
Pre-Installation ....................... 22
Procedure ........................... 22
Foundation .......................... 24
Horizontal Units .................... 24
Ductwork .............................25
Roof Curb ............................26
Downflow ..........................26
Rigging ............................27
General Unit Requirements .............27
Factory Installed Economizer ..........28
Temperature Limit Switch Usage for Gas
Heat Units ..........................28
Horizontal Discharge Conversion (3 to 5 Ton
Units)
................................29
TCO-1 Instructions .....................29
Horizontal Discharge Conversion (6 to 10 Ton
Units)
................................30
TCO1 Instructions .....................31
Return Air Smoke Detector .............31
Main Electrical Power Requirements .....32
Through-the-Base Gas Installation .......33
Requirements for Gas Heat .............33
Condensate Drain Configuration .........33
Filter Installation ......................34
Field Installed Power Wiring ............34
Main Unit Power ......................35
Standard Wiring .....................35
Optional TBUE Wiring (Through-the-Base
Electrical Option) ....................35
Field-Installed Control Wiring ..........36
Control Power Transformer ...........36
Controls Using 24 VAC ...............36
Controls using DC Analog Input/Outputs
(Standard Low Voltage Multi
conductor Wire) .....................36
DC Conductors ......................37
Space Temperature Averaging (ReliaTel™ On-
ly)
...................................41
Pre-Start ................................44
Voltage Imbalance .....................44
Electrical Phasing (Three Phase Motors) ..44
Compressor Crankcase Heaters (Optional) 45
ReliaTel™ Controls ..................45
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