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Retrofit Boiler Controls


am looking schools with steam (and some hot water) boilers. What are

some examples of good boiler control panels for schools (such as heat

timer) and what are the pros and cons?

Most heat timers that I see are bypassed. Most are controlled just by outdoor air sensor. The schools have lots of overheating because of 30 year old univents all over with disabled controls or no controls. 

I understand that a complete overhaul of the system is needed - but that just is not possible.

What would you suggest as boiler controls and why? I am not a specialist - I am not familiar with all of the systems.


  • Randy Baerg
    Randy Baerg Member Posts: 26
    steam and hydronic boiler controls

    For steam boilers you can get excellent operation and energy savings by

    using an outdoor reset control. This adjusts the running time of the

    boiler based on how cold it is outside. You can also add Indoor Sensors

    which provide further information to the control to fine tune the

    running time if the building is over or under heating.

    tekmar Control Systems makes a steam control Model 279 that has outdoor and indoor sensing capabilities.

    Keep in mind a good control won't fix all your steam problems. Clean steam traps, vents and good balancing have a big role.

    For hot water heating systems they also have single or multistage boiler controls for same.

    Here is a link to the steam control promo document.

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