CMU – Compact Make-up Air Unit

New models available!

Higher flow: Up to 2000 CFM
More power: Up to 35 kW
Better precision: Centrifugal ECM fans

ABOUT

CMU – Compact Make-up Air Unit

Neptronic's Compact Make-Up Air Unit (CMU) is equipped with advanced control strategies and a variety of size options to accommodate a wide range of HVAC applications. The CMU maximizes efficiency and enhances indoor air compensation, ensuring superior performance in HVAC system management. Equipped with Electronic Airflow Sensors (EAS), the CMU delivers precise temperature readings and integrates seamlessly with other building management systems with BACnet MS/TP and Modbus RTU communication protocols. Now, users can monitor supply temperatures, configure temperature setpoints based on airflow requirements, and receive alarm notifications.

APPLICATIONS

Typical Applications

Condominiums and Apartment buildings

Improves indoor air quality with fresh
incoming air
Provides cost-effective tempered air
Reduces odors and air contaminants
Keeps tenants comfortable and healthy

Commercial Kitchens and Restaurants

Optimizes exhaust hood fan ventilation
Improves cleanliness of kitchens
Prevents dangerous back drafts like carbon monoxide
Avoids negative air pressure

Gyms

Provides more oxygen from outside for successful workouts
Reduces unwanted odors and bacteria
Improves indoor air quality for staff and visitors
Increases comfort with cost-effective tempered air

Garages

Reduces stuffiness of enclosed spaces
Adjusts temperature cost-effectively to compensate for wide door openings
Eliminates odors, dust and air contaminants
Reduces negative air pressure and back drafts

Storage Spaces

Replaces stuffy air with fresh outdoor air
Adjusts temperature cost-effectively to compensate for wide door openings
Eliminates odors, dust and air contaminants
Reduces negative air pressure and back drafts

Battery Charging Rooms

Lowers hydrogen gas concentration
Reduces air explosiveness
Prevents dangerous chemical back drafts
Adapts temperature for specific battery
needs

SPECIFICATION

Technical Specification

Collar Size (in)	Power Rating (kW)	Voltage (V)
			Air Flow (CFM) [m³/h]
			Axial Fan		Centrifugal Fan
			@ 0,05”WC (12,5Pa)	@ 0,3”WC (75Pa)	@ 0,25”WC (62,5Pa)	@ 1,00”WC (250Pa)
06	1 \| 1.5 \| 2 \| 3	120-1PH \| 208-1PH \| 208-3PH \| 240-1PH \| 347-1PH \| 480-1PH \| 480-3PH \| 600-1PH \| 600-3PH	118 [200]	80 [136]	218 [370]	120 [204]
08	2 \| 3 \| 4 \| 4.5 \|5 \| 6 \| 8	208-1PH \| 208-3PH \| 240-1PH \| 347-1PH \| 480-1PH \| 480-3PH \| 600-1PH \| 600-3PH	304 [516]	225 [382]	325 [552]	250 [425]
10	3 \| 6 \| 7 \| 8 \| 9 \| 10 \| 12	208-1PH \| 208-3PH \| 240-1PH \| 347-1PH \| 480-1PH \| 480-3PH \| 600-1PH \| 600-3PH	617 [1048]	450 [765]	471 [800]	383 [651]
12	6 \| 8 \| 10 \| 12 \| 14 \| 16 \| 18 \| 20*	208-1PH \| 208-3PH \| 240-1PH \| 347-1PH \| 480-1PH \| 480-3PH \| 600-1PH \| 600-3PH	717 [1218]	550 [935]	633 [1075]	433 [736]

* Select Models Only

Click here to see the new models.

Technical Drawing

TYPE OF FANS

Axial Fan

Used in standard applications with aluminum filters, in which there is a lower pressure drop.
Includes the option of an AC or ECM motor:

- AC motor provides a cost effective solution, with simple installation and operation.

- ECM motor provides advanced control strategies, with high modulation capabilities and better efficiency.

Centrifugal Fan

Used in applications with higher restriction on the filter, duct or zoning requirements, which result in a higher pressure drop.
Includes ECM motor:

- ECM motor provides advanced control strategies, with high modulation capabilities and better efficiency.

CMU Axial Fan Performance (Imperial)

CMU Axial Fan Performance (Metric)

CMU Centrifugal Fan Performance (Imperial)

CMU Centrifugal Fan Performance (Metric)

FEATURES

Network Communication

BACnet MS/TP or Modbus RTU (selectable via DIP switch)
Select MAC address via DIP switch or via network

BACnet MS/TP

MS/TP @9600, 19200, 38400 or 76800 bps
BACnet scheduler (up to 6 events)
Firmware upgradeable via network
COV (change of value)
Copy and broadcast configuration to other devices via menu or network
Automatic baud rate detection
Automatic device instance configuration

Modbus RTU

Modbus RTU @9600, 19200, 38400 or 57600 bps
RTU Slave, 8 bits (configurable parity and stop bits)
Connects to any Modbus RTU master

Add-On Module

Ease of operation with Neptronic TDF digital room sensors

Display supply temperature
Configure CFM and temperature setpoints
Monitor alarms

Intelligent control strategies with ECM and AC fan options

Indoor air quality applications with integrated temperature, humidity and CO2 sensor
Interlock with extraction fans
Outside air sensors prime heater coils for fast response and comfort
Static pressure PID algorithms, control of fresh air and return air

CMU – Compact Make-up Air Unit

CMU – Compact Make-up Air Unit

Benefits of the Neptronic CMU