LG KNUDB091A Four Way Ceiling Cassette Indoor Unit Owner’s Manual

KNUDB091A Four Way Ceiling Cassette Indoor Unit

Specifications:

  • Model: KNUDB091A
  • Type: R32 Multi F 2 x 2 Four-Way Ceiling Cassette Indoor
    Unit
  • Cooling Capacity: 9,000 Btu/h
  • Heating Capacity: 10,400 Btu/h
  • Refrigerant Type: R32
  • Sound Pressure: 36 dB(A) / 33 dB(A) / 30 dB(A) (H/M/L)
  • Net Weight: 34 lbs.
  • Shipping Weight: 6.3 lbs.

Product Usage Instructions:

Installation:

  1. Ensure proper mounting of the ceiling cassette unit according
    to the installation manual.
  2. Connect the liquid and vapor pipes with the specified sizes and
    connections.
  3. Install the drain system as per the provided guidelines.

Controls and Settings:

  • Use the included Wireless Remote Controller (PWLSSB21H) for
    operating the unit.
  • Refer to the user manual for detailed instructions on
    controlling the temperature and fan settings.

Maintenance:

  1. Clean or replace the washable filter regularly to ensure
    efficient operation.
  2. Check for any leaks in the piping system and repair if
    necessary.

FAQ:

Q: Can I use additional accessories with this unit?

A: Yes, you can use optional accessories like Ventilation
Flange, Auxiliary Heater Kit, Wi-Fi Module, etc. for added
functionalities. Refer to the manual for compatibility details.

Q: How can I change the settings using the Remote
Controller?

A: Press the appropriate buttons on the Wireless Remote
Controller to adjust temperature, fan speed, and other settings.
Consult the user manual for specific instructions.

Q: What should I do if the unit is not cooling/heating
properly?

A: Check if the filters are clean, ensure proper airflow around
the unit, and verify that all connections are secure. If issues
persist, contact a qualified technician for assistance.

“`

Job Name/Location: Date: PO No.: Architect: Engr: Rep:
(Company)

For: File Approval
GC: Mech:
(Project Manager)

KNUDB091A
R32 Multi F 2 x 2 Four-Way Ceiling Cassette Indoor Unit
9,000 Btu/h

Resubmit Other

Tag No:

Performance: Nominal Cooling Capacity (Btu/h) Nominal Heating Capacity (Btu/h)
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

9,000 10,400

Electrical: Power Supply (V/Hz/Ø)1,2 Rated Amps (A)
Piping: Installed Liquid Pipe (in., O.D.) Installed Vapor Pipe (in., O.D.) Liquid Connection (in., O.D.) Vapor Connection (in., O.D.) Drain (in., O.D. / I.D.) Temperature Sensor

208-230/60/1 0.25
ø1/4 ø3/8 ø1/4 ø3/8 1-1/4, 1 Thermistor

Controls Features:

· Two thermistor control · 24-Hour on / off timer · Auto operation · Auto restart
· Swirl swing · Control lock function · Drain pump

· Group control · Inverter (variable speed fan) · Jet cool
· R32 leak detection sensor · Compatible with accessory Wi-Fi
module
· Compatible with applicable Single

Zone Outdoor Units (see single zone

Included Accessories:

literature for matching system details)

Wireless Remote Controller – PWLSSB21H

Required Accessories: Panel (24-13/32″ x 24-13/32″) – PT-QAGW0

Optional Accessories: Ventilation Flange3 – PTVK430 Auxiliary Heater Kit – PRARH1 Wi-Fi Module – PWFMDD200 Single-Port Shutoff Valve – PRHPZ010A Controller Options: MultiSITETM CRC* Controllers Simple Remote Controllers Standard III Remote Controllers Deluxe Remote Controller Remote Temperature Button Sensor Dry Contacts

Entering Mixed Air: Cooling (°F DB) Heating (°F WB)

57 ~ 77 59 ~ 81

Unit Data: Refrigerant Type Refrigerant Control Sound Pressure (H/M/L) dB(A)4 Standard Filter5 Net Weight (lbs.) Shipping Weight (lbs.) Panel Net Weight (lbs.) Panel Shipping Weight (lbs.)

R32 EEV 36 / 33 / 30 Washable 28.4
34
6.3
8.6

Fan: Type Quantity Motor/Drive Air Flow H/M/L (CFM) Dehumidification Rate (pts./hr.)

Turbo
1 Brushless Digitally Controlled/Direct
300 / 265 / 230 1.5

Notes:
1. Acceptable operating voltage: 187V-253V. 2. 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 Branch Distribution Unit to Indoor Unit (No. x AWG) 3 x 14 / 2 x 18. 3. Must comply with applicable codes for fire isolation dampers. 4. Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745. 5. Removable Washable Filter size: 14″ x 14″ x 1″. 6. See Engineering Manual for sensible and latent capacities. 7. The indoor unit comes with a dry helium charge. 8. Corresponding refrigerant piping length is in accordance with standard length of each outdoor unit and the level difference is 0 ft. All capacities are net with a combination ratio between 95 – 105%. 9. Must follow 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.

SB_MultiF_FourWayCassette_2x2_R32_KNUDB091A_2024_12_17_140735

© 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

Page 1 of 2

Job Name/Location:
KNUDB091A
R32 Multi F 2 x 2 Four-Way Ceiling Cassette Indoor Unit
9,000 Btu/h

Tag No.: Date: PO No.:

For continual product development, LG reserves the right to change specifications without notice.

SB_MultiF_FourWayCassette_2x2_R32_KNUDB091A_2024_12_17_140735

© 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

Page 2 of 2

Documents / Resources

LG KNUDB091A Four Way Ceiling Cassette Indoor Unit [pdf] Owner's Manual
KNUDB091A Four Way Ceiling Cassette Indoor Unit, KNUDB091A, Four Way Ceiling Cassette Indoor Unit, Ceiling Cassette Indoor Unit, Cassette Indoor Unit, Indoor Unit

References

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