Lennox CBX40UHV Series

Lennox CBX40UHV Series

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Page 26

CBX40UHV

ECB40-9CB P VOLTAGE SHOWN

Primary Limit S15 and

Secondary Limit S20

Relay K32

Relay K33

Elements HE1 and HE2

Location of CB1

Figure 23. Electric Heat

Table of Contents

Table of Contents1
Electrical Data2
Model Number Identification2
General Data2
Specifications / Electrical Data2
- Cbx40Uhv024 Blower Performance3
- 0 Through 0.80 In. W.g. External Static Pressure Range4
Parts Arrangement8
- CBX40UHV Control Box9
- Control Box9
Application9
Unit Components9
- Plastic Drain Pans10
- Coil10
- Air Handler Control (AHC)10
- Discharge Sensor (DAT)10
- Cbx40Uhv Air Handler Control11
- 9-Pin Connector11
- Component Connections12
- Field Wiring — Cooling Application13
- Field Wiring — Heat Pump13
- Cooling Application14
- Heat Pump Application14
- Thermostat Connections15
- Air Handler Control Connections16
- Thermostat Wire Length16
- Run Length — Communicating16
- Run Length — Non-Communicating16
- Delay Profile 317
- Delay Profile 117
- Push Button17
Air Handler Control Button, Display and Jumpers17
- Cbx40Uhv Jumper & Link Guide18
- Jumper & Link Guide19
- Internal Operation20
- Blower Motor Components20
- Initial Power up20
Variable Speed ECM Blower Motor20
- Check Power to Motor21
- Regal-Beloit — Blower B3 Harness21
- Indoor Blower Motor (B3) Control Troubleshooting (Emerson)22
- Regal-Beloit — Troubleshooting22
- Typical Digital Multimeter22
- Indoor Blower Motor (B3) Control Connections (Emerson)23
- Module Test (Emerson)23
- Additional Indoor Blower Motor (B3) Troubleshooting23
- J48 Test24
- J49 Test (Emerson)24
- Match-Ups and Ratings25
- Electric Heat Components25
- Circuit Breaker25
Optional Ecb40 Electric Heat25
Optional Humidity Control25
- Ecb40-9Cb P Voltage Shown26
- Electric Heat26
- Electric Heat Data - Cbx40Uhv-024 and Cbx40Uhv-03027
- Electric Heat Data - Cbx40Uhv-03628
- Electric Heat Data - Cbx40Uhv-042, Cbx40Uhv-048, and Cbx40Uhv-06029
- Optional Humidity Control (A20)30
- Principles of Cooling with Drier Air30
- Turning DEHUMIDIFY on or off31
- BASIC Mode31
- AUX Mode31
- PRECISION Mode31
- Setting HUMIDITY OFFSET32
- User Control of Humidification / Dehumidification32
- User Control of Humidification32
- User Control of Dehumidification32
Unit Sequence of Operations33
- AHC System Status Codes35
- AHC Configuration, Test and Error Recall (Fault and Lockout) Function35
- Configuring Electric Heat Sections35
- Indoor Blower Test35
Unit Status and Alarm Codes35
- AHC Single Character Display — Error Codes36
- Horizontal Right-Hand Discharge Application38
- CBX40UHV Cabinet38
- Down-Flow Application38
Application Configuration Modifications38
- Horizontal Left-Hand Discharge Application39
- Suspending Horizontal Unit39
- Left-Hand Discharge Configuration39
- Overflow Drain40
- Condensate Drain40
- Best Practices40
- Main Drain40
- Preliminary and Seasonal Checks41
- Cooling Start‐Up41
- External Static Pressure41
- Heating Start‐Up41
Start-Up Operation41
Operating Characteristics41
- Filters42
- Supply Air Blower42
- Electrical42
Maintenance42
Air Handler Control (AHC) Checkout43
Configuring Unit Flow Charts43
- Configuring Unit Size Codes (Model Number)44
- Configuring/Detecting Electric Heat Sections45
- Evenheater Operation46
- EVENHEAT Operation47
- Heat Pump Operation48
- Air Handler Control AHC) Indoor Blower Mode Speed/Profiles Settings48
- Single or Two-Stage Unit48
- Cooling Operation49
- Error Code / Recall Mode50
- Blower Test Mode51
- Cbx40Uhv - 208/230V Single Phase - Sequence of Operation52
Unit Diagram52
Electric Heat Diagrams and Sequence of Operations53
- ECB40-6 and ECB40-6CB 208/230V Single-Phase Sequence of Operation54
- ECB40‐8 and ECB40-8CB - 208/230V Single-Phase Sequence of Operation55
- ECB40‐9CB - 208/230V Single-Phase Sequence of Operation56
- First-Stage Heat56
- Second-Stage Heat56
- ECB40-12.5CB, ‐15CB - 208/230V Single-Phase Sequence of Operation57
- ECB40‐20CB - 208/230V Single-Phase Sequence of Operation58
- ECB40‐25CB - 208/230V Single-Phase Sequence of Operation59
- Three-Phase Sequence of Operation61

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