Field Instruments

Product Overview

The Daikin McQuay Control Kit (Part No. 350147413) with module designation MT3044 is a Modbus® communications upgrade kit designed for integration with MicroTech® III-controlled chillers (such as the AWS, AWV, AGZ, AMZ, ADS platforms). This module enables high-level communication via RS-485 for building automation system (BAS) interfacing, remote monitoring, and control of chiller units.

Key Features

• Upgrades a compatible chiller to Modbus® RTU communications over RS-485, facilitating Integration into BAS networks.
• Board-mounted plug-in module that connects to the MicroTech III unit controller via a 10-pin board-to-board connector and attaches to the chiller’s control panel.
• Dual channel RS-485 interface (Channel 0 top connector, Channel 1 optional/daisy-chain) for flexible networking.
• Diagnostic LEDs: one for BSP/firmware status, another for BUS communication state (traffic, timeout, errors).
• Configurable network options (address 1-247, baud rates 4,800 / 9,600 / 19,200 / 38,400 bps, parity, stop bits) via unit controller keypad.
• Fits models from the Pathfinder® / MicroTech® III chiller range, making it a direct plug-in upgrade.
• Factory new OEM kit, one-year manufacturer’s warranty.

Technical Specifications

Make: Daikin McQuay

Model: MT3044 (Communication Module Kit)
Part Number: 350147413
Type: Modbus® RTU Communication Interface Kit for Chillers
Supports: MicroTech® III controllers in Daikin/McQuay chillers (AWS, AWV, AGZ, AMZ, ADS)
Network Port: RS-485 (EIA-485) 3-wire twisted pair (T1, T2, Ref)
Bus Channels: Channel 0 (top connector) standard; Channel 1 available for daisy-chain
Bus Termination: 120 Ω resistor selectable or internal load switch for the first/last node
Baud Rate Options: 4,800 / 9,600 / 19,200 / 38,400 bps
Network Address Range: 1 – 247 (configurable)
Power Supply: +5 V DC (via unit controller) max current ~270 mA
Firmware Support: Board Support Package (BSP) version 10.14 and newer
Dimensions: Approx. 45 mm × 110 mm × 75 mm (1.77″ × 4.33″ × 2.95″)
Certifications: UL916, UL873 (US); CSA C22.2 M205 (Canada); EMC & Low-Voltage Directives (Europe)
Installation: Requires removal of the left-most board knockout from the chiller controller, insertion of the new module and network cable; see “Installation & Maintenance Manual IM 969-6”.
Diagnostics Indicators:

• BSP LED: Green = normal; Yellow = initialising; Red = hardware error.
• BUS LED: Green = network communicating; Yellow = initialising; Red = communication error/timeout.

Applications

• Chiller unit integration into BAS systems for remote monitoring and control.
• Energy management and telemetry for large HVAC installations using Daikin/McQuay chillers.
• Upgrading chillers for improved data visibility, fault logging, and performance monitoring.
• Sites requiring Modbus® protocol support for integration with building automation, SCADA, or IoT platforms.

Why Buy from FieldInstruments.lk?

At FieldInstruments.lk, Sri Lanka’s trusted supplier of industrial instrumentation and automation components, we deliver:

• 100% genuine Daikin/McQuay parts with official OEM warranty and full traceability.
• Competitive pricing and fast island-wide delivery in Sri Lanka.
• Local technical consultation, setup assistance, and after-sales support.
• One-stop partner for HVAC controls, BAS integration modules, and industrial automation solutions.

This control kit offers a reliable route to modernising legacy chiller systems for networked communication and enhanced automation capability.

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Fieldinstruments.lk
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Phone: +94718555888 Email: info@fieldinstruments.lk