Table of Contents
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Literature Change History ............................................... 6
Manual Overview ............................................................. 6
Warnings and Cautions .................................................. 6
Commonly Used Acronyms ............................................ 6
About the Unit .................................................................. 7
Unit Inspection ................................................................. 7
Storage ............................................................................ 7
General Unit Requirements ........................................... 12
Downflow Models Only: .............................................. 12
All Units: ..................................................................... 12
Electrical Requirements ............................................. 12
Field Installed Control Wiring ..................................... 12
Gas Heat Requirements ............................................. 12
Recommended Clearances ........................................... 13
Roof Curb and Ductwork ............................................... 13
Horizontal Ductwork ....................................................... 13
Unit Rigging and Placement .......................................... 13
Condensate Drain Connection ....................................... 16
O/A Sensor & Tubing Installation ................................... 16
General Requirements ................................................... 17
Furnace Gas Train ......................................................... 17
(Factory Mounted Option) .............................................. 19
Main Power Wiring ......................................................... 19
Low Voltage Wiring ........................................................ 23
Field Installed AC Control Wiring ................................... 23
Field Installed DC Control Wiring ................................. 23
Zone Sensor Wiring Requirements .............................. 24
Conventional Thermostat Wiring Requirements .......... 24
Emergency Stop Wiring ................................................ 24
Zone Sensor Thermostat Connections ......................... 25
Constant Volume Mode of Operation ............................ 26
Zone Panel (BAYSENS006B) .................................... 26
Zone Panel (BAYSENS008B) .................................... 26
Remote Panel W/O NSB (BAYSENS010B) ............... 26
Remote Panel with NSB (BAYSENS019*) ................ 26
Variable Air Volume Mode of Operation ........................ 27
Default Discharge Air Control ................................... 27
Remote Panel with NSB (BAYSENS020*) ................ 27
Remote Panel W/O NSB (BAYSENS021A) ............... 28
Remote Zone Sensor (BAYSENS013*) .................... 28
Remote Zone Sensor (BAYSENS014*) .................... 28
Remote Zone Sensor (BAYSENS017B) ................... 28
High Temperature Sensor (BAYFRST001A) ............. 28
Remote Zone Sensor (BAYSENS016A) ................... 28
(BAYSTAT023A) ......................................................... 29
Space Temperature Averaging ................................. 29
RTRM - ReliaTel Refrigeration Module ........................ 30
(Optional) ....................................................................... 30
RTAM - ReliaTel Airhandler Module ............................. 30
Conventional Thermostat Connections ........................ 30
....................................................................................... 30
LCI - LonTalk® Communication Interface .................... 30
Interface (Optional) ........................................................ 30
Table of Contents
ReliaTel Control Features ............................................. 31
CV Controls ................................................................ 31
an Economizer ............................................................ 32
Zone Temperature - Occupied Cooling ...................... 32
Zone Temperature - Occupied Heating ...................... 32
Supply Fan ................................................................. 32
Supply Air Tempering ................................................ 32
Variable Air Volume Applications .................................. 33
Occupied Cooling ....................................................... 33
Economizer ................................................................. 33
Unoccupied Cooling ................................................... 33
Unoccupied Heating ................................................... 33
Morning Warm-up Control .......................................... 33
Daytime Warm-up Control .......................................... 33
Supply Duct Static Pressure Control .......................... 33
Supply Air Temperature Reset ................................... 34
Applications .................................................................... 34
Off Mode ..................................................................... 34
Zone Temperature - Unoccupied Cooling .................. 34
Zone Temperature - Unoccupied Heating .................. 34
Mechanical Cooling with an Economizer ................... 34
Gas Heat Control ........................................................ 34
Electric Heat Control .................................................. 34
Clogged Filter ............................................................ 35
Ventilation Override Control ...................................... 35
Emergency Stop ......................................................... 35
Low Pressure Control ................................................ 35
High Pressure Cutout ................................................ 35
Power Exhaust Control .............................................. 35
Compressor Winding Protection ............................... 35
Lead/Lag Control ....................................................... 35
Coil Frost Protection ................................................... 35
Preparing the Unit for Operation ................................... 37
Electrical Phasing ......................................................... 37
Voltage Supply and Voltage Imbalance ........................ 37
Supply Voltage ........................................................... 37
Voltage Imbalance ..................................................... 38
Starting the Unit ............................................................. 38
Test Modes ..................................................................... 38
Verifying Proper Fan Rotation ....................................... 38
(CV, IGV's or VFD's) ...................................................... 40
Exhaust Fan Operation .................................................. 40
Economizer Damper Adjustment ................................... 46
Manual Fresh Air Damper .............................................. 47
Starting the Compressors .............................................. 48
Compressor Oil ........................................................... 48
Scroll Compressor Operational Noises ...................... 53
Compressor Crankcase Heaters ................................... 53
At Shutdown: .................................................................. 53
At Low Ambient Start-Up ............................................... 53
During Normal Operation ............................................... 53
Charging by Subcooling ................................................. 53
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Table of Contents
Troubleshooting
