Manual 2100-549Q
Page
2 of 69
CONTENTS
Getting Other Information and Publications .........4
General ...................................................................5
ANSI Z535.5 Definitions ...........................................5
I-TEC
Series General Information .............................6
I-TEC Model Nomenclature .......................................6
Shipping Damage .....................................................9
Unit Removal from Skid ............................................9
Handling Unit After Removal from Skid ......................9
Required Steps After Final Placement ......................10
Minimum Installation Height ...................................10
Securing Unit to Structure ......................................10
Seismic Considerations ...........................................10
Duct Work..............................................................18
Filters ...................................................................18
Condensate Drain ...................................................19
Installation ..................................................................22
Mounting the Unit ..................................................22
Wiring – Main Power ...............................................22
Wiring – Low Voltage Wiring .....................................23
Low Voltage Connections .........................................23
General .................................................................23
Start Up ........................................................................31
General .................................................................31
Topping Off System Charge .....................................31
Safety Practices .....................................................31
Description of Standard Equipment ..........................32
Important Installer Note ..........................................32
Phase Monitor ........................................................32
Three Phase Scroll Compressor Start Up Information .32
Service Hints .........................................................32
Sequence of Operation ............................................33
Pressure Service Ports ............................................33
Lowering Outdoor Fan Speed for Sound ....................33
Defrost Cycle .........................................................33
I-TEC
Commercial Room Ventilator System
(Vent Code "M") ..........................................................35
General Description ................................................35
Control Wiring ........................................................35
Recommended Control Sequences ...........................35
Setting the Ventilation CFM Levels ...........................35
I-TEC
Combination CRV and Economizer
Ventilation System (Vent Code "N") ......................38
General Description ................................................38
Control Wiring ........................................................38
Setting the Ventilation CFM Levels ...........................39
I-TEC Economizer Sequence of Operation .................40
Heating Mode Operation .........................................40
Ventilation Mode ...................................................40
I-TEC
Modulating Commercial Room
Ventilator System (Vent Code "Q") ........................41
General Description ................................................41
Control Wiring ........................................................41
Recommended Control Sequences ...........................41
Changing Ventilation CFM Rates in Manual Mode ......42
Changing to Fully Modulating Mode .........................42
Configuring Bard Part #8403-067 CO
2
Control
for CRV Modulating Control .....................................46
I-TEC
Energy Recovery Ventilator System
(Vent Code "R") ...........................................................49
General Description ................................................49
Control Wiring ........................................................49
Recommended Control Sequences ...........................50
Changing Ventilation CFM Rates in Manual Mode ......50
Changing to Fully Modulating Mode .........................50
Configuring Bard Part #8403-067 CO
2
Control
for ERV Modulating Control .....................................55
Energy Recovery Ventilator Maintenance ....................58
Troubleshooting .........................................................60
Solid State Heat Pump Control ................................60
Checking Temperature Sensor ..................................61
Troubleshooting Condensate Overflow Systems ..........62
Troubleshooting ECM™ 142R Outdoor Fan Motors ....63
Troubleshooting ECM™ Indoor Blower Motors ...........65
Fan Blade Setting Dimensions .................................67
Refrigerant Charge ..................................................67
