To Next PageTo Next Page
Need help?Do you have a question about the Lennox KHA SERIES and is the answer not in the manual?
Describes the KHA commercial heat pump series and its features.
Highlights crucial safety warnings for installation and service.
Lists available accessories for the cooling system.
Details available blower motors and drive kits.
Covers cabinet accessories and control system options.
Describes economizer options and controls for ventilation.
Lists electrical accessories and electric heat components.
Covers outdoor air dampers and related accessories.
Lists power exhaust fans and ceiling diffusers.
Details roof mounting frames and transitions.
Provides overall unit data and cooling performance metrics.
Details heating specs and refrigerant type.
Lists specs for coils, fans, motors, and filters.
Provides overall unit data and cooling performance metrics.
Details heating specs and refrigerant type.
Lists specs for coils, fans, motors, and filters.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Performance table for downflow airflow.
Performance table for horizontal airflow.
Lists specifications for belt drive kits.
Air volume data for power exhaust fans.
Resistance values for options and accessories.
Air resistance and throw data for ceiling diffusers.
Electrical specifications for direct drive blowers.
Details electrical requirements for electric heat.
Lists electrical accessories like disconnects and fuse blocks.
Electrical data for compressor and motors.
Electrical requirements for electric heat options.
Lists electrical accessories for this model.
Electrical data for compressor and motors.
Electrical requirements for electric heat options.
Lists electrical accessories for this model.
Electrical data for compressor and motors.
Electrical requirements for electric heat options.
Lists electrical accessories for this model.
Electrical data for compressor and motors.
Electrical requirements for electric heat options.
Lists electrical accessories for this model.
Details electric heat kW input and Btuh output.
Illustrates the physical layout of major KHA unit components.
Shows the layout and components within the KHA control box.
Describes the function of TB1 for thermostat connections.
Explains transformers powering control circuits.
Details outdoor fan capacitors and dual capacitors.
Explains contactors, relays, and other control box parts.
Explains defrost thermostat and control board functions.
Describes defrost timing intervals and test mode.
Explains compressor delay and time delay features.
Covers pressure switches, lockout, and diagnostic LEDs.
Shows the refrigerant piping layout for KHA units.
Indicates the position of the S49 freezestat on the indoor coil.
Details on compressor and electrical safety.
Explains protection switches for the indoor coil.
Details optional switches and the reversing valve.
Explains fan motor and optional compressor monitor.
Details filter drier and crankcase heater components.
Describes blower types and compartment locations.
Outlines blower operation and CFM determination for direct drive.
Steps for calculating CFM for belt drive blowers.
Guidelines for adjusting belt drives.
Procedures for checking belt tension and alignment.
Information on selecting field-furnished drives.
Details on electric heat controls and wiring.
Information on heating elements and protective fuses.
Guidelines for installing the KHA unit.
Pre-start-up checks for proper operation.
Steps for initiating heating and cooling operation.
Critical steps for ensuring correct 3-phase compressor rotation.
Procedures for verifying and adjusting refrigerant charge.
Method for verifying system charge using approach temperature.
Guidance on lubrication, filters, and cleaning.
Information on replacing the filter drier.
Details on roof mounting frames for KHA units.
Information on transitions and outdoor air dampers.
Explains economizer control module and sensors.
Describes economizer functions and LED indicators.
Covers diffusers and economizer operational modes.
How to adjust the free cooling setpoint.
Setting the minimum damper position.
Adjusting settings for Demand Control Ventilation.
Describes damper positions based on thermostat demand.
Details manual and motorized damper operation.
Explains the function of the power exhaust fan.
Describes filter switch and CO2 sensor functions.
Details the optional overflow switch for drain pans.
Wiring diagram for P voltage models.
Wiring diagram for Y voltage models.
Wiring diagram for G, J voltage models.
Describes start-up sequences for various modes.
Outlines heating, electric heat, and defrost operation.
Diagram for connecting electronic or electromechanical thermostats.
How the thermostat controls the unit's functions.
Shows wiring for the economizer section.
Describes economizer control logic and damper positioning.
Wiring for P voltage electric heat configurations.
Wiring for Y voltage electric heat configurations.
Wiring for G, J voltage electric heat configurations.
Operation sequence for P voltage electric heat.
Operation sequence for Y, G, J voltage electric heat.
General
