LENNOX KG-KC-KH Landmark and Raider Rooftop Units User Manual
- October 30, 2023
- Lennox
Table of Contents
LENNOX KG-KC-KH Landmark and Raider Rooftop Units
Product Information
The Commercial Training Toolbox Tips is a resource for Lennox Landmark and Raider Rooftop Units that have a factory or field-installed economizer with a Honeywell W7220 controller. An economizer uses a combination of sensible and enthalpy sensors to determine when outside air is suitable for free cooling. The type and number of sensors depend on the controller.
Honeywell Jade W7220 Economizer Controller Sensors
The Honeywell Jade W7220 Economizer Controller Sensors are used for
KG/KC/KH and ZG/ZC/ZH Units with a Honeywell W7220 Economizer Controller. The
sensors include:
- Enthalpy Return Air Sensor (11G21): Measures return air enthalpy for dual enthalpy (differential enthalpy) functions. Compares with Outside Air enthalpy sensor for control.
- Sensible Return Air Sensor (11G26): Measures return air temperature for differential sensible control. Measures outside air enthalpy for dual enthalpy (differential enthalpy) functions. In single enthalpy applications, it compares the enthalpy to the ES Curve Setting to enable free cooling. Enables free cooling operation when conditions are favorable.
- Sensible Outside Air Sensor (11G26): Measures outside air temperature for single and differential sensible control.
- Sensible Discharge Air Sensor (11G26): Measures discharge air after the cooling coil.
Helpful Resources
For installation and service literature, visit
LennoxCommercial.com or
LennoxPros.com. You can also access self-service
technical support with no wait times by downloading the apps on the Lennox
Commercial YouTube Channel and registering for Technical Training Webinars.
Product Usage Instructions
To use the Commercial Training Toolbox Tips, follow the below instructions:
- Ensure that your Lennox Landmark or Raider Rooftop Unit has a factory or field-installed economizer with a Honeywell W7220 controller.
- Refer to the Honeywell Jade W7220 Economizer Controller Sensors section to understand the type and number of sensors required for your unit.
- Use the sensors to determine when outside air is suitable for free cooling and enable free cooling operation when conditions are favorable. The specific instructions for using the sensors will depend on the type of sensor and the controller being used.
- If you require additional assistance, visit LennoxCommercial.com or LennoxPros.com for installation and service literature or access self-service technical support through the apps on the Lennox Commercial YouTube Channel and Technical Training Webinars.
COMMERCIAL TRAINING TOOLBOX TIPS
Economizer Setup for KG/K/KH and ZG/ZC/ZH Units with a Honeywell W7220
Economizer Controller
Applies to Lennox Landmark and Raider Rooftop Units that have a factory or
field-installed economizer with a Honeywell
W7220 controller
Helpful Resources
- Installation and service literature on LennoxCommercial.com or LennoxPros.com An economizer uses a combination of sensible and enthalpy sensors to determine when the outside air is suitable for free cooling. The type and number of sensors depend on the controller.
Self-Service Technical Support with No Wait Times Click on the black logos below to download these apps
- View Service Videos Lennox Commercial YouTube Channel
- Download all Training Toolbox Tips
- Register for Technical Training Webinars
Honeywell Jade W7220 Economizer Controller Sensors
| Type | Sensor | Cat # | Action | Image |
|---|
Enthalpy
| ****
Return Air
| ****
11G21
| ****
Measures return air enthalpy for dual enthalpy(differential enthalpy) functions. Compares with Outside Air enthalpy sensor for control.
| ****
Sensible
| ****
Return Air
| ****
11G26
| ****
Measures return air temperature for differential sensible control.
| ****
Enthalpy
| ****
Outside Air
| ****
11G21
| ****
Measures outside air enthalpy for dual enthalpy(differential enthalpy) functions.
| ****
In single enthalpy applications, it compares the enthalpy to the ES Curve
Setting to enable free cooling.
Enables free cooling operation when conditions are favorable.
Sensible
| ****
Outside Air
| ****
11G26
| ****
Measures outside air temperature for single and differential sensible control.
| ****
Enables free cooling operation when conditions are favorable.
Sensible
| ****
Discharge Air
| ****
11G26
| ****
Measures discharge air after the cooling coil.
| ****
Documents / Resources
|
LENNOX KG-KC-KH Landmark and Raider Rooftop
Units
[pdf] User Manual
KG-KC-KH, ZG-ZC-ZH, KG-KC-KH Landmark and Raider Rooftop Units, KG-KC-KH,
Landmark and Raider Rooftop Units, Raider Rooftop Units, Rooftop Units
---|---
|
LENNOX KG-KC-KH Landmark and Raider Rooftop
Units
[pdf] User Manual
KG-KC-KH, ZG-ZC-ZH, KG-KC-KH Landmark and Raider Rooftop Units, KG-KC-KH,
Landmark and Raider Rooftop Units, Raider Rooftop Units, Rooftop Units
References
- Commercial Air Conditioning & Heating Units | Lennox Commercial
- LennoxPros - HVAC Lennox Supplier | LennoxPROs.com
- Commercial Air Conditioning & Heating Units | Lennox Commercial
- Lennox Commercial Technical Training
- Commercial Training Toolbox Tips