LG KNMLB241A R32 Multi F Multi Position Air Handling Unit Owner's Manual

Ensure the unit is placed in a well-ventilated area with proper clearance for airflow.
Connect the liquid and vapor pipes as per the specified sizes and connections.

Install the temperature sensor in the designated location.
Use the provided controller options to adjust settings according to your preference.

Monitor the temperature and adjust fan settings for optimal comfort.
Refer to the user manual for detailed operating instructions.

Maintenance

Regularly clean the air filters to ensure efficient operation.
Schedule professional maintenance checks to keep the unit running smoothly.

Job Name/Location

Date:…………………………………………….

PO No.:…………………………………………
Architect:………………………………………

Engr:…………………………………………….
Rep:……………………………………………..

For:……………………… File Resubmit Approval Other
GC:………………………………………………

Mech:…………………………………………..

KNMLB241A

R32 Multi F Multi-Position Air Handling Unit 24,000 Btu/h Indoor Unit

Performance

Nominal Cooling Capacity (Btu/h): 24,000
Nominal Heating Capacity (Btu/h): 27,000
- Cooling Nominal Test Conditions:
- Indoor: 80°F DB / 67°F WB
- Outdoor: 95°F DB / 75°F WB
- Heating Nominal Test Conditions:
- Indoor: 70°F DB / 60°F WB
- Outdoor: 47°F DB / 43°F WB

Electrical

Power Supply (V/Hz/Ø)¹,²: 208-230 / 60 / 1
Rated Amps (A): 2.8

Piping

Installed Liquid Pipe (in., O.D.): 1/4 Flare
Installed Vapor Pipe (in., O.D.): 1/2 Flare
Liquid Connection (in., O.D.): 1/4 Flare
Vapor Connection (in., O.D.): 1/2 Flare

Drain (in., O.D. / I.D.): 3/4 FPT
Temperature Sensor: Thermistor

Standard Features

Access Panel for Field Supplied Air Filter

Controls Features

Inverter (variable speed fan)
Hot start

Self-diagnosis
Soft dry operation
Auto operation

Auto restart
Sleep mode
Timer (on/off/weekly)

R32 leak detection sensor
Integrated connections for 3rd third-party thermostat
ECM fan provides constant airflow regardless of the permitted ESP

Optional Accessories

Single-Port Shutoff Valve – PRHPZ010A
Auxiliary Heater Kit – PRARH14
Electric Heater Kits – ANEHxx3Cx⁵

Downflow Conversion Kit – PNDFA0
Wi-Fi Module – PWFMDD200

Controller Options

MultiSITE™ CRC* Controllers

Simple Remote Controllers
Standard III Remote Controllers
Deluxe Remote Controller

Wireless Remote Controller⁶
Remote Temperature Button Sensor
Dry Contacts

Entering Mixed Air

Cooling (°F WB): 57 ~ 77
Heating (°F DB): 59 ~ 81

Unit Data

Refrigerant Type: R32
Refrigerant Control: EEV

Sound Pressure (H/M/L) dB(A)³: 36 / 33 / 29
Filter Dimensions7 (in): 16 x 20 x 1
Net Weight (lbs.): 115.3

Shipping Weight (lbs.): 127.4

Fan

Type: Sirocco

Quantity: 1
Motor/Drive: Brushless Digitally Controlled / Direct
Air Flow H/M/L (CFM): 800 / 700 / 580

Minimum~Maximum External Static Pressure8 (in wg): 0.1~1.0
Fan Setting Value: N/A – Constant Flow
Dehumidification (pts./hr.): 4.23

Notes

Acceptable operating voltage: 187V-253V.
The power wiring and the communication wiring from the outdoor unit to the indoor unit, or from the branch distribution unit to the indoor unit, is field supplied and must be stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only). All wiring must comply with applicable local and national codes.
- a. Power wiring and communication wiring from outdoor unit to indoor unit (No.. x AWG) 3 x 14 / 2 x 18.
- b. Power wiring and communication wiring from the branch distribution unit to the indoor unit (No.. x AWG) 3 x 14 / 2 x 18.
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.

If a Third-Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed, supplemental heat capability cannot be controlled by the Third-Party Thermostat.
Electric heater accessory is available in 3/5/8kW capacities for the 12MBH AHU, 3/5/8/10kW capacities for 18- 30MBH AHUs, and 3/5/8/10/15kW capacities for the 36MBH AHU. Refer to the engineering manual for details.
Requires an LG wall controller because Multi-Position Air Handling Units do not have an infrared receiver.

Actual filter sizes may vary.
Maximum static pressure may result in reduced airflow (CFM).
See the Engineering Manual for sensible and latent capacities.

The indoor unit comes with a dry helium charge.
Corresponding refrigerant piping length is in accordance with the standard length of each outdoor uni,t and the level difference is 0 ft. All capacities are net with a combination ratio between 95% and 105%.
Must follow the installation instructions in the applicable LG installation manual.

For a complete list of available accessories, contact your LG representative.
For continual product development, LG reserves the right to change specifications without notice.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com

Installation Instructions

Dimension

For continual product development, LG reserves the right to change specifications without notice.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com

FAQ

Q: Can I install additional accessories to this unit?
- A: Yes, you can add optional accessories like Single-Port Shutoff Valve, Auxiliary Heater Kit, Electric Heater Kits, Downflow Conversion Kit, and Wi-Fi Module for added functionalities.
Q: What should I do if the unit malfunctions?
- A: If you encounter any issues with the unit, refer to the troubleshooting section in the manual or contact customer support for assistance.

Documents / Resources

LG KNMLB241A R32 Multi F Multi Position Air Handling Unit [pdf] Owner's Manual
KNMLB241A, KNMLB241A R32 Multi F Multi Position Air Handling Unit, R32 Multi F Multi Position Air Handling Unit, Multi F Multi Position Air Handling Unit, Multi Position Air Handling Unit, Air Handling Unit

References

User Manual

LG KNMLB241A R32 Multi F Multi Position Air Handling Unit

Product Information

Product Usage Instructions