Lennox KGB074S4T Manuals

Manuals and User Guides for Lennox KGB074S4T. We have 1 Lennox KGB074S4T manual available for free PDF download: Unit Information

Lennox KGB074S4T Unit Information

Lennox KGB074S4T Unit Information (77 pages)

Brand: Lennox | Category: Heat Pump | Size: 3.72 MB

Table of Contents

Table of Contents
1
Precautions and Procedures
1
Options
2
Accessories
2
Options
8
Specifications
8
Blower Data
14
Electrical Data
31
- Kgb Parts Arrangement
  34
- Kgb Control Box
  34
- Control Box Components
  35
- Control Transformer T1
  35
- Compressor Contactor K1
  35
I Unit Components
35
- P2 Terminal Designations
  36
- Gas Relay K72
  36
- Burner Control A3
  36
- Cooling Components
  37
- Compressor B1
  37
- Kgb Plumbing
  38
- S49 Freezestat Location
  38
- Freezestat S49
  39
- Blower Compartment
  39
- High Pressure Switch S4
  39
- Low Ambient Switches S11
  39
- Determining Unit CFM
  40
- Location of Static Pressure Readings
  40
- Field-Adjustable Blower Speeds
  41
- High Speed - All Units
  41
- Two-Speed Blower Operation
  42
- Direct Drive Blower Leads
  42
- Minimum and Maximum Pulley Adjustment
  42
- Blower Assembly
  43
- Measure Belt Tension
  43
- Pulley Alignment
  43
- Adjust Belt Tensioner
  44
- Install Belt
  44
- Drive Component Manufacturer's Numbers
  45
- Gas Heat Components
  46
- Heat Exchanger
  46
- Burner Box Assembly
  46
- Primary High Temperature Limit S10
  47
- Flame Rollout Limit Switch S47
  47
- Combustion Air Prove Switch S18
  47
- Combustion Air Inducer B6
  47
- Heating Start up
  48
- Preliminary and Seasonal Checks
  48
- Start up - Operation
  48
Placement and Installation
48
- Placing Unit in Operation
  49
- Gas Valve Operation
  49
- Turning off Gas to Unit
  49
- Charging
  50
- Cooling Start up
  50
- Safety or Emergency Shutdown
  50
- KGB/KCB024 Normal Operating Pressures
  51
- KGB/KCB 024 Charging Curves
  51
- KGB/KCB030 Normal Operating Pressures
  52
- KGB/KCB 030 Charging Curves
  52
- KGB/KCB 036 Charging Curves
  53
- KGB/KCB036 Normal Operating Pressures
  53
- KGB/KCB048 Normal Operating Pressures
  54
- KGB/KCB 048 Charging Curves
  54
- KGB/KCB 060 Normal Operating Pressures
  55
- KGB/KCB 060 Charging Curves
  55
- KGB/KCB 072 Charging Curves
  56
- KGB/KCB 074S & H Normal Operating Pressures
  57
- KGB/KCB074S & H Charging Curves
  57
- KGB/KCB 090 Normal Operating Pressures
  58
- KGB/KCB 090 Charging Curves
  58
- Refrigerant Charge and Check - Fin/Tube Coil
  59
- Gas Piping
  60
- Testing Gas Piping
  60
- System Service Checks
  60
- Heating System Service Checks
  60
- Testing Gas Supply Pressure
  61
- Check and Adjust Manifold Pressure
  61
- Proper Gas Flow
  61
- Flame Sensing
  61
- Cooling System Service Checks
  62
- Lubrication
  62
Charging
62
Maintenance
62
Accessories
63
- Assembled Roof Mounting Frame
  64
- Outdoor Air Damper
  64
- Typical Flashing Detail
  64
- Free Cooling Setpoint
  65
- Economizer Controls
  65
- Optional Sensors
  65
- A6 Enthalpy Controller
  65
- DCV Set and Max Settings
  66
- Economizer Operation
  67
- Outdoor Air Not Suitable
  67
- Outdoor Air Suitable
  67
- Power Exhaust Fan
  68
- Optional Cold Weather Kit
  68
- Control Systems
  68
- Smoke Detectors A17 and A64
  68
- Wiring Diagrams and Sequence of Operation
  69
- Kgb024/060 P Voltage Unit Diagram
  69
- KGB024/090 P, Y, G, J & M Voltage Sequence of Operation
  71

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