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RT-SVX23G-EN
Table of Contents
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings, Cautions, and Notices . . . . . . . . 2
Important Environmental Concerns . . . . . 2
Important Responsible Refrigerant Practices
2
Model Number Description
. . . . . . . . . . . . . . . 6
Model Number Notes . . . . . . . . . . . . . . . . . 7
General Information
. . . . . . . . . . . . . . . . . . . . . 8
Unit Inspection . . . . . . . . . . . . . . . . . . . . . . 8
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Nameplate . . . . . . . . . . . . . . . . . . . . . 8
Compressor Nameplate . . . . . . . . . . . . . . . 8
Unit Description . . . . . . . . . . . . . . . . . . . . . 8
Economizer Control Actuator (Optional) . 8
System Input Devices & Functions . . . . . . 9
Low Pressure Control . . . . . . . . . . . . . . . . . 9
High Pressure Control . . . . . . . . . . . . . . . 10
Power Exhaust Control (Optional) . . . . . 10
Lead/Lag Control (Dual Circuit Only) . . . 10
Unit Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . 12
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . 18
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Horizontal Units . . . . . . . . . . . . . . . . . . . . 20
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
General Unit Requirements . . . . . . . . . . . . 23
Factory Installed Economizer . . . . . . . . . 24
Temperature Limit Switch Usage for Electric
Heat Units . . . . . . . . . . . . . . . . . . . . . . . . . 24
Horizontal Discharge Conversion WSC036E,
WSC048E (3 to 4 Ton Units) . . . . . . . . . . . . 24
Horizontal Discharge Conversion WSC060-
120E (5 to 10 Ton Units) . . . . . . . . . . . . . . . 24
TCO-A Instructions . . . . . . . . . . . . . . . . . . 25
Return Air Smoke Detector . . . . . . . . . . . 26
Main Electrical Power Requirements . . . . .26
Electric Heat Requirements . . . . . . . . . . . .27
Low Voltage Wiring
(AC & DC) Requirements . . . . . . . . . . . . . .27
Condensate Drain Configuration . . . . . . . . .27
Filter Installation . . . . . . . . . . . . . . . . . . . . .28
Field Installed Power Wiring . . . . . . . . . . . .28
Standard Wiring . . . . . . . . . . . . . . . . . . . . .28
Optional TBUE Wiring (Through-the-Base
Electrical Option) . . . . . . . . . . . . . . . . . . . .28
Field Installed Control Wiring . . . . . . . . . .29
Controls Using 24 VAC . . . . . . . . . . . . . . .29
Controls Using DC Analog Input/Outputs
(Standard Low Voltage Multiconductor Wire)
29
Space Temperature Averaging (ReliaTel™
only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Pre-Start
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Voltage Imbalance . . . . . . . . . . . . . . . . . . . . .36
Electrical Phasing (Three Phase Motors) . .36
Compressor Crankcase Heaters (Optional on
WSC036E*, WSC048E1, and WSC060E1 -
Standard on Remaining Units) . . . . . . . . .37
ReliaTel™ Controls . . . . . . . . . . . . . . . . . .37
Test Modes . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Unit Start-Up
. . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Verifying Proper Air Flow . . . . . . . . . . . . . . .39
Units with 5-Tap Direct Drive Indoor Fan .39
Units with Belt Drive Indoor Fan . . . . . . . .39
ReliaTel™ Units with Direct Drive Indoor Fan
(7.5 to 10 Ton Units) . . . . . . . . . . . . . . . . . .40
Return Air Smoke Detector . . . . . . . . . . . .41
Economizer Start-Up . . . . . . . . . . . . . . . . .41
Compressor Start-Up . . . . . . . . . . . . . . . . .42
Heating Start-Up . . . . . . . . . . . . . . . . . . . .42
Final System Setup . . . . . . . . . . . . . . . . . .42
Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Fan Belt Adjustment - Belt Drive Units . . . .43
Monthly Maintenance . . . . . . . . . . . . . . . . . .44