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RT-SVX072A-EN
5
Main Unit Power Wiring. . . . . . . . . . . . . . . . . . 51
Electrical Service Sizing . . . . . . . . . . . . . . . . . . 53
Set 1: Cooling Only Rooftop Units
and Cooling with Gas Heat or
Hydronic Heat Rooftop Units . . . . . . . . . 53
Set 2: Rooftop units with Electric
Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Field Installed Control Wiring . . . . . . . . . . . . . 58
Controls using 24 VAC . . . . . . . . . . . . . . . . . . . 59
Transformer for Expansion Module . . . . . . . 59
Discharge Temperature Control
Changeover Contacts. . . . . . . . . . . . . . . . . 60
Remote Zone Sensor
(BAYSENS073*) . . . . . . . . . . . . . . . . . . . . . 60
Remote Zone Sensor
(BAYSENS074*) . . . . . . . . . . . . . . . . . . . . . 60
Equipment Stop . . . . . . . . . . . . . . . . . . . . . 60
Ventilation Override Mode (VOM)
Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Emergency Stop Switch . . . . . . . . . . . . . . 61
Occupied/Unoccupied Contacts . . . . . . . 61
Wall or Duct Mount Humidity Sensor
(BAYSENS036* or
BAYSENS037*) . . . . . . . . . . . . . . . . . . . . . . 61
Unit Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 62
Electrical Connection . . . . . . . . . . . . . . . . . . . . 62
Main Electrical Power . . . . . . . . . . . . . . . . 63
SEHF Units with 200V or 230V
Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . 63
Field-installed Control Wiring . . . . . . . . . 63
Requirements for Gas Heat . . . . . . . . . . . 63
Requirements for Hot Water Heat
(SLH*) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Requirements for Steam Heat
(SSH*) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Space Pressure Sensor and Tubing
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Condensate Drain Connections. . . . . . . . 64
Supply and Return Duct
Connections . . . . . . . . . . . . . . . . . . . . . . . . . 64
Installation of New Units . . . . . . . . . . . . . . . . . 64
Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Sequence of Operation. . . . . . . . . . . . . . . . . . . 68
Performance Data . . . . . . . . . . . . . . . . . . . . . . . 69
Supply Fan Performance . . . . . . . . . . . . . 69
Pressure Drop Tables. . . . . . . . . . . . . . . . . 91
Component Static Pressure
Drops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Fan Drive Selections . . . . . . . . . . . . . . . . . 97
Pressure Curves . . . . . . . . . . . . . . . . . . . . 102
Exhaust Air Dampers . . . . . . . . . . . . . . . 110
Outside Air and Return Air Damper
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 110
To Adjust the Outside Air Damper
Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Compressor Startup (All Systems) . . . . . . . 113
Refrigerant Charging . . . . . . . . . . . . . . . . 114
Compressor Crankcase
Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Compressor Operational
Sounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Electronic Compressor Protection
Module (CPM) . . . . . . . . . . . . . . . . . . . . . . 115
Electronic Expansion Valves . . . . . . . . . . . . . 118
Measuring Superheat . . . . . . . . . . . . . . . . . . . 119
Charging by Subcooling . . . . . . . . . . . . . . . . 119
Measuring Subcooling . . . . . . . . . . . . . . 119
Low Ambient Options . . . . . . . . . . . . . . . . . . . 119
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Standard Ambient Condenser
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Low Ambient Condenser Fans . . . . . . . 120
(Variable Air Volume Systems) . . . . . . . 120
Gas Furnace Startup . . . . . . . . . . . . . . . . . . . . 122
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Содержание IntelliPak 1
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