OTERRA Wall Mounts (BX Series) Cooling Only

0.75 to 2 Tons  |  Model: RK_BX + FTK_BX

Refrigerant: R-410A

***OBSOLETE: Transitioned to R-32*** - See replacement RKF_AX + FTKF_AX

Model: RK_BX

Cooling Only
Max VerticalLength (ft)49' (9-12 MBH)66' (18-24 MBH)Max Total Length (ft)66' (9-12 MBH)98' (18-24 MBH)

Model: FTK_BX

Dimensions (H x W x D)

9-12 MBH: 21-11/16" x 26-1/2" x 11-3/16"
18-24 MBH: 27-13/32" x 36-5/8" x 13-13/16"

Dimensions (H x W x D)

9-12 MBH: 11-1/3" x 30-29/32" x 9-27/32"
18-24 MBH: 11-11/16" x 39-1/2" x 11-1/3"

Piping
Model NumberNominal Size (MBH)Nominal Cooling @95°F (BTU/HR)Lineset SizeMax Total Length (ft)Max Vertical Length (ft)Energy Star Certified
FTK09BXVJU + RK09BXVJU98,9001/4" x 3/8"6649Yes
FTK12BXVJU + RK12BXVJU1210,9001/4" x 3/8"6649Yes
FTK18BXVJU + RK18BXVJU1818,0001/4" x 1/2"9866Yes
FTK24BXVJU + RK24BXVJU2421,2001/4" x 5/8"9866No

  • Cooling operation range: 50°F to 115°F
  • Low ambient cooling to -4°F available with wind baffle
  • Full low ambient cooling kits to -40°F available

Features

  • Colored LED indication light on wall mount
  • 5 selectable fan speed with smooth stepping for best sound performance
  • (Quiet mode as low as 19 dBA)
  • Auto restart after power failure (reinstates previous settings)
  • Powerful and ECO+ modes
  • Hydrophilic blue fin coating of indoor unit for enhanced coil cleanliness and lifespan
  • Detachable drain pan (for cleaning and for easy blower and fan motor removal)
  • Options for gravity drained condensate or field installed condensate pump that fits within the unit cabinet.

Electrical Information

MCA (A) / MOP (A)
TypeVoltage9 MBH12 MBH18 MBH24 MBH
Outdoor unit208-230V/1ph7.8 / 157.8 / 1513.4 / 2013.4 / 20
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Version 0.7.0 - Last updated 22/07/2025 09:40, ext 25/06/2025 22:45