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OSMO Frameless Trench

For large windows and doors

The OSMO Frameless Trench fan coil is a robust solution for heating and cooling large windows and sliding doors, preventing cold infiltration. Efficiently circulating air with continuous filtration for protection. Low flow allows precise temperature control, enhanced by a quiet ECM fan. Fully floor-mounted with stainless steel casings and copper-aluminum heat exchangers, it's discreet, durable, and reliable.

Compatible with low-temperature generators such as heat pumps, condensing boilers, and solar-integrated systems.

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.

AFloor 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.
BTrench 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.
CSteel 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

OSMO Frameless Trench dimensioned drawing

Technical Specifications

Cooling

	FT4	FT6	FT8
Total (MBh)	4.1	5.5	7.2
Sensible (MBh)	3.4	4.9	6.8
Water flow (GPM)	55	74	96
Pressure (Ft H2O)	3.7	1.7	1.8

Heating

	FT4	FT6	FT8
Capacity (MBh)	5.2	6.9	8.9
Water flow (GPM)	69	92	119
Pressure (Ft H2O)	5.4	2.4	2.7

Airflow

	FT4	FT6	FT8
High (CFM)	134	195	259
Medium (CFM)	91	135	167
Low (CFM)	49	73	81
Static pressure (In W.C.)	0.04	0.04	0.04

Cooling

	FT4	FT6	FT8
Total (kW)	1.2	1.6	2.1
Sensible (kW)	1.0	1.4	2.0
Water flow (L)	208.2	280.1	363.4
Pressure (kPa)	11.1	5.1	5.4

Heating

	FT4	FT6	FT8
Capacity (kW)	1.5	2.0	2.6
Water flow (L)	261.2	348.3	450.5
Pressure (kPa)	16.1	7.2	8.1

Airflow

	FT4	FT6	FT8
High (m³/h)	228	331	440
Medium (m³/h)	155	229	284
Low (m³/h)	83	124	138
Static pressure (Pa)	10	10	10

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