Installation - Electrical 42
General Recommendations 43
Installer-Supplied Components 48
Power Supply Wiring 48
Control Power Supply 48
Heater Power Supply 48
Water Pump Power Supply 48
Interconnecting Wiring 49
Chilled Water Flow (Pump) Interlock 49
Chilled Water Pump Control 49
Alarm and Status Relay Outputs
(Programmable Relays) 52
Low Voltage Wiring 54
External Emergency Stop 54
External Auto/Stop 54
External Circuit Lockout - Circuit 1 and Circuit 2 54
Ice Making Option 55
External Chilled Water Setpoint (CWS) 55
External Current Limit Setpoint (CLS) 56
Outdoor Air Temperature Sensor 56
Communication Card CSR 57
Communication link connection procedure 57
LonTalk communication interface 58
Operating Principles 64
System schematics 64
Pre-Start Checkout 67
Installation Checklist 67
Receiving 67
Unit Location and Mounting 67
Unit Piping 67
Electrical Wiring 67
General 68
Unit Voltage Power Supply 69
Unit Voltage Imbalance 69
Unit Voltage Phasing 69
Water System Flow Rates 70
Water System Pressure Drop 70
Contents
RTAD-SVX01F-E4 5
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