Dear Team,

                   Iam having Lennox HVAC system which was installed in my machine. It has programmable controller such as temperature,pressure,flow control settings.Now i planned to replaced the lennox controller with siemens controller.Is there any model for that.The existing controller image is attached.

Dear Balajirajendran,

Thank you for your question.

Siemens has a wide range of HVAC and Building Automation controllers for different purposes, like room automation, primary control, chiller applications, OEM, etc. There are freely programmable controllers, pre-programmed devices, with various communication protocols and a wide range of application libraries and tools. 

One part of the controller range can be found in the system catalogue under the following link: https://www.downloads.siemens.com/download-center/Download.aspx?pos=download&fct=getasset&id1=A6V10387472

Other controllers can be selected in the HIT tool: http://www.hqs.sbt.siemens.com/gip/general/linkmapper/Linkmapper.aspx?application=HIT&language=en&domain=HQEU&module=Product&Submodule=ShowGroup

The picture provided does not show the controller type. We would also need detailed information about the I/O usage, programming option and required communication protocol and/or system integration for an advice.

We recommend to contact your local Siemens BT sales office. They are glad support you and to advise you for the best possible solution for your specific use case.

Best regards,

Albis