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iZONE Wall-Mounted & Ducted Fan Coil Units

Split, Horizontal Concealed & Horizontal Exposed Series

Complete technical specifications for HLC 51G–102G wall-mount, HLC 34HC–238HC concealed ducted, and HLC 34HE–238HE exposed fan coil units. Cooling 1.8–14.0 kW, heating 2.7–22.1 kW.

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Split Fan Coil Units (Wall-Mounted)

Model Series HLC 51G – 102G — 4 models covering 2.8–5.6 kW cooling and 4.2–8.2 kW heating. Direct replacement for split AC indoor units.

HLC 51G – 102G Specifications

2-pipe wall-mounted hydronic fan coil units

Parameter HLC 51G HLC 68G HLC 85G HLC 102G
Air Flow m³/h 510 680 850 1020
Air Flow CFM 300 400 500 600
Cooling Capacity W 2800 3700 4700 5600
Cooling Capacity BTU/h 9556 12628 16041 19113
Heating Capacity W 4190 5490 6930 8220
Heating Capacity BTU/h 14300 18737 23652 28055
Water Flow kg/h 600 770 960 1190
Power Input W 52 62 76 96
Noise Level dB(A) 39 41 43 45
Dimensions (L×W×H) mm 890×280×190 890×280×190 980×320×205 1080×330×220
Water Supply DN DN15 DN15 DN20 DN20
Water Return DN DN15 DN15 DN20 DN20
Condensate Drain DN DN20 DN20 DN20 DN20

Split Wall-Mount Notes

  • All models are 2-pipe configuration (1 coil, heating or cooling)
  • Quiet operation from 39 dB(A) — suitable for bedrooms and hotel rooms
  • Wall bracket mounting — identical installation to conventional split AC indoor units
  • Integrated condensate pump available as optional accessory
  • Compatible with iHEAT R290 heat pump systems

Horizontal Concealed Fan Coil Units (Ducted)

Model Series HLC 34HC – 238HC — 9 models, 340–2,380 m³/h airflow, 2.2–14.0 kW cooling. Fully concealed above ceiling with ducted air distribution. Static pressure up to 50 Pa.

HLC 34HC – 238HC Specifications

Horizontal concealed ducted fan coil units — 0 Pa static pressure (standard)

Parameter HLC 34HC HLC 51HC HLC 68HC HLC 85HC HLC 102HC HLC 136HC HLC 170HC HLC 204HC HLC 238HC
Air Flow — High m³/h 340 510 680 850 1020 1360 1700 2040 2380
Air Flow — Medium m³/h 255 383 510 638 765 1020 1275 1530 1785
Air Flow — Low m³/h 170 255 340 425 510 680 850 1020 1190
Cooling Capacity W 2247 3146 4146 5056 5955 7758 9657 11601 13965
Cooling Capacity BTU/h 7669 10737 14150 17256 20324 26478 32959 39594 47663
Heating Capacity W 3251 4697 6189 7747 9491 11997 14732 18162 22137
Heating Capacity BTU/h 11096 16031 21123 26441 32393 40946 50280 61987 75554
Power Input W 37 52 62 76 96 134 152 189 228
Motor Power W 10 16 20 25 30 20×2 25×2 30×2 40×2
Fan Motor Quantity 1 2 2 2 2 3 4 4 4
Noise Level dB(A) ≤37 ≤39 ≤41 ≤43 ≤45 ≤46 ≤48 ≤50 ≤52
Water Supply kg/h 324 482 655 814 936 1278 1602 1915 2178
Water Resistance kPa 30 30 30 30 40 40 40 40 50
Dimensions — Length mm 780 880 980 1080 1180 1480 1680 1780 1880
Dimensions — Width mm 500 500 500 500 500 500 500 500 500
Dimensions — Height mm 260 260 260 260 260 260 260 260 260

Horizontal Concealed Notes

  • All performance data at 0 Pa external static pressure (standard configuration)
  • Available in 12 Pa, 30 Pa, and 50 Pa static pressure configurations — see Operating Conditions below
  • Width is 500 mm and height is 260 mm across all 9 models
  • Models HLC 136HC and above use multiple fan motors for balanced air distribution
  • Flexible duct connections on supply and return air sides
  • Drain pan and condensate connection included on all models

Horizontal Exposed Fan Coil Units

Model Series HLC 34HE – 238HE — 9 models, 340–2,380 m³/h airflow, 1.8–12.6 kW cooling. Visible or semi-concealed ceiling mount with direct air discharge.

HLC 34HE – 238HE Specifications

Horizontal exposed fan coil units

Parameter HLC 34HE HLC 51HE HLC 68HE HLC 85HE HLC 102HE HLC 136HE HLC 170HE HLC 204HE HLC 238HE
Air Flow — High m³/h 340 510 680 850 1020 1360 1700 2040 2380
Air Flow — Medium m³/h 255 383 510 638 765 1020 1275 1530 1785
Air Flow — Low m³/h 170 255 340 425 510 680 850 1020 1190
Cooling Capacity W 1800 2700 3600 4500 5400 7200 9000 10800 12600
Cooling Capacity BTU/h 6143 9215 12287 15359 18430 24574 30717 36860 43004
Heating Capacity W 2700 4050 5400 6750 8100 10800 13500 16200 18900
Heating Capacity BTU/h 9215 13823 18430 23038 27645 36860 46076 55291 64506
Power Input W 37 52 62 76 96 134 152 189 228
Motor Power W 10 16 20 25 30 20×2 25×2 30×2 40×2
Fan Motor Quantity 1 2 2 2 2 3 4 4 4
Noise Level dB(A) ≤37 ≤39 ≤41 ≤43 ≤45 ≤46 ≤48 ≤50 ≤52
Water Supply kg/h 324 482 655 814 936 1278 1602 1915 2178
Water Resistance kPa 30 30 30 30 40 40 40 40 50
Dimensions — Length mm 900 900 1110 1150 1290 1520 1740 1950 2140
Dimensions — Width mm 520 520 520 520 520 520 520 520 520
Dimensions — Height mm 285 285 285 285 285 285 285 285 285

Horizontal Exposed Notes

  • Exposed units mount below ceiling — no false ceiling required
  • Direct air discharge without ductwork — 0 Pa static pressure
  • Width is 520 mm and height is 285 mm across all 9 models
  • Same motor, fan quantity, noise, water supply, and water resistance specifications as the HC (concealed) series
  • Decorative casing included — suitable for visible installation
  • Optional return air grille and filter available

Operating Conditions

Standard test conditions, static pressure configurations, and installation specifications for all HLC fan coil unit series.

Standard Test Conditions

  • Cooling: Indoor 27°C DB / 19.5°C WB
  • Cooling water: Inlet 7°C, Outlet 12°C
  • Heating: Indoor 20°C DB
  • Heating water: Inlet 60°C, Outlet 50°C
  • Static pressure: 0 Pa (standard rating)

High Static Pressure — 30 Pa

  • Applies to: HLC HC (concealed) series only
  • Airflow derating: ~85% of nominal high-speed value
  • Cooling capacity: Derated proportionally to reduced airflow
  • Use case: Medium-length duct runs, 1–2 grille outlets
  • Motor selection: Verify motor power is sufficient for static load

High Static Pressure — 50 Pa

  • Applies to: HLC HC (concealed) series only
  • Airflow derating: ~70% of nominal high-speed value
  • Cooling capacity: Derated proportionally to reduced airflow
  • Use case: Longer duct runs, multiple grille outlets, complex routing
  • Motor selection: Higher motor power models recommended (HLC 102HC+)

Installation Specifications

  • Power supply: 220–240V / 50Hz, single phase
  • Pipe material: Copper or PPR recommended
  • Insulation: All chilled water pipes must be insulated to prevent condensation
  • Condensate: Gravity drain preferred; condensate pump optional on wall-mount units
  • Clearances: Maintain manufacturer-specified service clearances on all sides
  • Controls: Compatible with 2-pipe on/off and modulating valve configurations

General Notes

  • All capacities measured per EN 1397 and EN 16430 standards
  • Noise levels measured at 1 metre distance in free field conditions
  • Water resistance values are for the coil only — additional losses from valves and fittings must be calculated separately
  • Specifications are subject to change — consult Karnot for latest technical data
  • All units are 2-pipe configuration (single coil for heating or cooling)
  • For project-specific sizing and selection, contact Karnot Engineering at sales@karnot.com

Frequently Asked Questions

What is the difference between concealed and exposed horizontal fan coil units?

Concealed (HC) units are fully hidden above the ceiling with ducted air distribution and support static pressures up to 50 Pa. Exposed (HE) units are visible or semi-concealed below the ceiling and discharge air directly without ductwork.

What cooling capacity range do the HLC split wall-mount units cover?

The HLC 51G to 102G split wall-mount fan coil units cover cooling capacities from 2,800 W (9,556 BTU/h) to 5,600 W (19,113 BTU/h), with heating capacities from 4,190 W to 8,220 W.

Can the horizontal concealed units handle high static pressure duct runs?

Yes. The HLC HC series supports static pressure configurations of 0, 12, 30, and 50 Pa. At 30 Pa and 50 Pa, airflow values are derated. Consult the operating conditions section for specific derating factors.

What pipe connections do the split wall-mount units use?

The HLC 51G and 68G use DN15 (1/2 inch) supply and return connections. The HLC 85G and 102G use DN20 (3/4 inch) connections. Condensate drain is DN20 across all models.