Frameless Trench

The OSMO Frameless Trench fan coil is a robust solution for heating and cooling large windows and sliding doors, preventing cold infiltration.

It efficiently circulates air, with continuous filtration for protection. Its low flow allows precise temperature control, enhanced by a quiet ECM fan. Compatible with low-temperature sources, it’s fully floor-mounted, discreet, durable, and reliable with stainless steel casings and copper-aluminum heat exchangers.

Key Features

  • Fully recessed into the floor
  • Auto-restart
  • Washable filters

Options

  • LCDI power cord

Operation

  • Cool, heat, dehumidify, and auto
  • Selectable fan speeds, low, med, high, and auto

Connection

  • 2-pipe
  • Can connect to low temperature 4 pipe systems with optional 6-way valve
  • Available in 1/2 or 3/4 connections

Mounting

  • Recessed floor mount

Airflow

  • Supply air vertical
  • Return air vertical

Included controls

  • WiFi app for Android and iPhone
  • Centralized control
  • Wall Mounted Basic touch controller
  • Third party thermostat interface
  • BACnet/Modbus interface

How It Works

OSMO Frameless Trench fan coils create an effective air barrier for large windows, neutralizing negative thermal comfort effects. Compared to standard solutions, they feature a more compact design and smaller dimensions, providing the same power with a reduced footprint.

Floor grille

The walkable floor grille seamlessly sits inside the recessed steel frame. It is easily removable for access to the filter and features a fixed deflector for even air flow distribution.

Trench fan coil

Fully floor-mounted trench coil system for efficient heating and cooling of large windows and sliding doors, preventing cold infiltration. It continuously circulates and filters air, and enables precise low-flow control via a quiet ECM fan with durable stainless steel casings.

Steel frame

A galvanized sheet metal casing, designed for floor insertion to house the fan coil comes with cutouts for hydraulic pipes and electrical cables. Positioned during construction, it facilitates preparation of plumbing and electrical connections for subsequent terminal installation.

Dimensions

Technical Specifications

 

  • Total (MBh)
  • Sensible (MBh)
  • Water flow (GPM)
  • Pressure (Ft H2O)

FT4

  • 4.1
  • 3.4
  • 55
  • 3.7

FT6

  • 5.5
  • 4.9
  • 74
  • 1.7

FT8

  • 7.2
  • 6.8
  • 96
  • 1.8

 

  • Capacity (MBh)
  • Water flow (GPM)
  • Pressure (Ft H2O)

FT4

  • 5.2
  • 69
  • 5.4

FT6

  • 6.9
  • 92
  • 2.4

FT8

  • 8.9
  • 119
  • 2.7

 

  • High (CFM)
  • Medium (CFM)
  • Low (CFM)
  • Static pressure (In W.C.)

FT4

  • 134
  • 91
  • 49
  • 0.04

FT6

  • 195
  • 135
  • 73
  • 0.04

FT8

  • 259
  • 167
  • 81
  • 0.04

 

  • Coil Volume (Gal)
  • Maximum operating (PSI) Max. operating (PSI)
  • Hydraulic connections (In) connections (In)

FT4

  • 0.13
  • 145
  •  

FT6

  • 0.16
  • 145
  • Choice of 1/2 or 3/4  

FT8

  • 0.20
  • 145
  •   Choice of 1/2 or 3/4

 

  • Power supply voltage (V/ph/Hz)
  • Maximum draw (W)
  • Maximum current input (A)
  • Minimum draw (W)

FT4

  • 230/1/60 ​
  • 19
  • 0.16
  • 4

FT6

  • 230/1/60 ​
  • 20
  • 0.18
  • 4

FT8

  • 230/1/60
  • 29
  • 0.26
  • 4

 

  • High (dB(A))
  • Medium (dB(A))
  • Low (dB(A))

FT4

  • 40
  • 33
  • 25

FT6

  • 41
  • 34
  • 25

FT8

  • 42
  • 34
  • 26

 

  • Length (In)
  • Height (In)
  • Depth (In)
  • Net weight (Lb)

FT4

  • 35.2
  • 17.0
  • 7.4
  • 30.8

FT6

  • 43.1
  • 17.0
  • 7.4
  • 35.2

FT8

  • 51.0
  • 17.0
  • 7.4
  • 41.8

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