BACnet Multi-Zone Heating Controller (MZ-503)

SKU: 271

BACnet Multi-Zone Heating Controller (MZ-503)

SKU: 271

Designed to provide independent heating control for up to 4 zones, the MZ-503 can be used as a stand-alone controller or can be seamlessly integrated into the Titan residential solution alongside the FCU-5 range of controllers.


An RDU can be connected to the controller, allowing the user to cycle between each of the configured zones (up to 4). Alternatively, if an RDU is required in each zone a RDU-T/Hub can be added which allows up to 4 individual RDUs to be connected.

Each zone can be allocated a control output, a control sensor to monitor the heating demand, and a high limit floor sensor the protect the flooring in underfloor heating (UFH) applications if required.

A common enable for plant such as HIUs, Boilers or Heat Pumps is provided as standard.

Setback and frost protection settings are available as standard and the controller is supplied with BACnet MS/TP communications for links to a BMS, Third Party Solutions or integration into Titan Residential solutions.

Key Benefits of The MZ-503:

  • Up to 4 zones of independent heating control.
  • High Temperature floor protection settings when used for UFH applications.
  • Setback / Frost protection settings.
  • Heat enable relay outputs for HIU/Boilers/Heat Pump with output delay option.
  • 8 x Temperature inputs
  • Ability to connect 4 x RDU interfaces (requires RDU-T/Hub)
  • Fully compatible with Titan Products residential control solution.

All Titan Products BACnet controllers are compatible with our 10K3 temperature sensors. At Titan we are happy to discuss your requirements prior to purchase to ensure the controller is set up perfectly for your application.

Project Quantity Price Breaks available. Contact us now for prices.

Got a question? Call us on 0161 406 6480 or email

MZ-503 Datasheet

Orders are normally prepared for dispatch the same day depending on stock, with all orders sent via a tracked courier service. Please see the cut-off times below. Orders placed after these times will be processed the following working day.

Monday – Thursday: 2.00pm

Friday: 11.00am

We will do our best to fulfil all orders within 1 to 2 working days meaning you will typically receive your item(s) within 48 hours of placing your order. In cases where items are temporarily out of stock, deliveries will take longer. Please contact the sales office to confirm stock availability.

UK Delivery Charges:

  • Standard (1 – 2 Working Days): £9.50
  • Next Day (Before Noon): £16.00
  • Next Day (Before 10.30am): £22.00

Delivery free of charge for all web orders over £500.

For deliveries abroad please see delivery options at checkout.

For returns there is a restocking charge of 15% of the total goods value (min. £10).

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