1-way or 2-way linear slot diffuser with manually adjustable alternating air streams. Direction adjustment: horizontal / diagonal / vertical.

Installation flush with ceiling or free-hanging. Modular, continuous, flanged and flangeless options available. Mounting frame optional.

	Location – above: Integrated flush with a closed ceiling or freely suspended.
	Mixed flow discharge: 2-way blow or 1-way blow high aspiration alternating multi-stream discharge intensely mixes supply air with room air, producing high induction and creating strong supply air dilution with rapid discharge velocity decay. Low velocity, high momentum supply air motion of substantially uniform temperature distribution over short or long throws is achieved. Ideal for enhanced thermal comfort (ADPI ≥ 90%).
	Return air: Suitable for use as a return air inlet.
	Low temperature supply: May be used for low temperature (cold air) supply systems (Tsupply ≤ 10 °C), where ∆Tsupply-room ≥ -16 K.
	VAV dependent throw: VAV throw dependent upon airflow rate. Minimum airflow dependent upon ∆Tsupply-room (eg turndown to 25% and ≈1 L/s/m2 @ ∆Tsupply-room ≈ -16 K).
	Adjustable direction: Air pattern adjustable through 90°, from horizontal (cooling) through diagonal to vertical (heating). Maximum recommended discharge height: Cooling: ≈7 m Heating: ≈4 m
	Manual adjustment: Airflow direction adjustment is manual.
	Linear face shape: Modular or continuous linear aesthetic, each with flanged or flangeless edge profiles.
	Slot face pattern: Barrel nozzles create linear slot appearance with 1 to 8-slot options. Slots match SMARTEMP Linear multi-Jet Ceiling Diffuser (LJC-AD) and Linear Multi-stream Wall Diffuser (LMW-AD).
	Plastic Face: Adjustable black plastic barrel nozzles.
	Metal Face: Anodised or powder coated linear aluminium profiles.

Options

	Mounting Frame: Suitable for rendering into plaster board ceiling. Diffuser clips in from below.
	Plenums: Side-entry connection boxes with concealed diffuser fastenings.

SMARTEMP Linear Multi-stream Ceiling Diffuser LMC-AD

High induction, 1-way blow or 2-way blow linear ceiling diffuser with 1-to-8 slots, each with multiple barrel nozzles discharging alternating multi-stream mini-jets. Mini-jets individually adjustable through 90° to alter air pattern from horizontal through diagonal to vertical. Nozzle barrels may be rotated to shut off airflow in segments. Suitable for low temperature supply air (≥ 5°C) and CAV or VAV systems with extended turndown.

Airflow rate 

• 6 – 228 L/s/m (22 – 821 m³/h/m)

Nominal length

• 1200 mm neck
• 1195 mm face
• Other lengths available on request
• Modular or continuous aesthetic available (joining strips on request)
• Flanged or flangeless side and end profiles

Element width

• Flangeless: n x 28 + 3 mm, where n = number of rows (1 to 6 rows)
• Flanged: n x 28 + 20 mm, where n = number of rows (1 to 6 rows)

Discharge height

• 2.4 – 7.0 m

Features

• 1 – 8 slot configurations
• 1 or 2 way discharge patterns
• Adjustable horizontal, diagonal or vertical discharge direction
• High induction alternating mini-jet discharge
• Barrel nozzles individually adjustable through 90°
• Barrel nozzles of plastic, black
• Side and end profiles of aluminium, natural anodised or powder coated
• Flanged or flangeless side and end profiles
• Installation flush with ceiling or free hanging

Function

The SMARTEMP Linear Multi-stream Ceiling Diffuser, type LMC-AD, is a high induction linear slot diffuser. A multitude of barrel nozzles produce alternating mini-jet discharge. The discharge direction of each barrel nozzle is individually adjustable, providing accurate air pattern adjustment. The diffuser is available with 1-way (adjustable through 90° for horizontal through diagonal to vertical discharge) or 2-way discharge patterns (each direction adjustable through 90° for horizontal through diagonal to vertical discharge).

The diffuser may be flush mounted in a ceiling or freely suspended (ie no Coanda attachment to the ceiling required). The diffuser’s 1 to 8-row linear slots (greater slot numbers available on request) comprise a multitude of nozzles with manually adjustable discharge direction adjustment to produce high induction discharge by breaking up the supply air stream into many miniature jets.  The barrel nozzles are made of polycarbonate, dyed black (optionally white), and are located in aluminium extrusions that are anodised or powder coated.

High aspiration causes intense mixing at the diffuser discharge face, strongly diluting the supply air stream with large quantities of room air. High induction, additionally, rapidly equalises the supply air stream temperature with room air, preventing cold air dumping. Rapid supply-to-room air temperature equalisation also improves heating performance by preventing the supply air from being too buoyant. High induction airflow is characterised by uniform temperature distribution and high comfort levels in the space. High induction also produces a strong increase in supply air stream mass flow rate, as well as rapid discharge velocity decay. At any given airflow rate, the SMARTEMP LMC-AD diffuser is suitable both for long throws (due to the supply air stream’s high momentum) as well as short throws (due to the supply air stream’s low velocity).

The SMARTEMP LMC-AD diffuser may be used in CAV systems, as well as VAV systems, including low-temperature supply air systems with ΔT_supply-room ≥ -16 K. VAV system turndown is dependent upon ΔT_supply-room (eg to 25% at ΔT_supply-room = -16 K). Due to high induction mini-jet discharge, the effective air changes per hour in the space are increased, allowing minimum specific airflow rates as low as approximately 1 L/s/m² when the diffuser is fully turned down, whilst maintaining enhanced comfort of 90% ADPI. Due to the rapid discharge decay characteristics of the micro-jet discharge, a high maximum specific airflow rate of 15 L/s/m² may be achieved at 90% ADPI.