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Intellidyne Guarantee

ECS and Intellidyne are so confident that the IntelliCon products offered will reduce your energy consumption by a minimum of 10% in the first year, or we will refund your entire purchase price if we are unable to attain these savings. Ask you sales rep for details.

Green Team Member


ECS is an official partner with ConEd to maximize the incentives available for our products and services.

FAQs On the IntelliCon

A recent e-mail exchange between a potential customer and a technician seems to explain in a clear concise way how the IntelliCon functions.


This is a response to the 5 questions from a potential client with little or no editing.


Our Hydronic Economizers monitor the boiler water temperature leaving the boiler, going to the heating elements via a strap-on sensor mounted on the supply pipe of the boiler.


Typically, a hydronic heating boilers operating control (aquastat) is set between 180 and 200 degrees F. As the boiler water temperature drops we monitor this "rate of change," with our sensor. As the boiler water temperature continues to drop, the aquastat will close its contacts allowing the burner to start and raise the water temperature back up to its set-point and shutting the burner off.


The Intellidyne control is connected in series between the operating control and the burner, and it will hold the burner from firing based on this "rate of change." This temperature change is being monitored three (3) times a second by the sensor. During this hold-off period the IntelliCon is constantly arriving at a new starting temperature for the burner. When the IntelliCon releases the burner to run, al existing automatic operating boiler controls now take over and the burner fires, allowing the boiler water temperature to reach the aquastat high limit set-point.


The IntelliCon controls do not shut the burner off or modulate the boiler water temperature, as outdoor reset controls do. All our control does is delay the start of the burner based on the rate of change at the boiler supply pipe, which is directly related to the load on the boiler. There is a built in "hard floor low limit" in the Hydronic Heating Economizers which will never let the boiler temperature drop below 145 degrees F. Should our control hold the boiler from firing and this temperature is sensed by the sensor, the IntelliCon will release the burner to run. We are basically a dynamic differential.


The result is less burner cycling for short periods and more efficient burn cycles.


The Steam Heating Economizers work the same way with the exception of the sensor. This control uses a pressure transducer to monitor the steam pressure that is being used to heat the space with.


Again, there is a hard floor low limit that is two (2) PSI. Should the IntelliCon hold the burner from firing and this pressure is reached, the IntelliCon will release the burner to fire using the existing automatic controls. Again, we do not shut the burner off or terminate the burner cycle, the boiler always reaches its controllers set point, be t fixed or variable (such as outdoor reset).


Not all steam heating systems are applications for our economizers due to the hard floor limit which is two (2) PSI . Some steam heating boilers operate with control setting of four (4) PSI off and two (2) PSI on. As you can see, the "burner on" is two (2) which is our hard floor load limit... there would be Economy (holding the burner from firing) Cycle from the IntelliCon.


There is an IntelliCon for both low and high pressure steam boilers.


Some FAQ's (Frequently Asked Questions)


1. What is the lowest and highest temperature the controller will modulate to be on the high limit of a hot water boiler?


We do not "modulate" the boiler water temperature in the sense of an outdoor reset control (Heat-Timer). The only temperature we change is the low limit (start temperature) of the burner. We do not adjust or change the upper limit or "cut-off" temperature (where the burner shuts off).


2. What is the lowest and highest pressure controller will modulate on the high end of a steam boiler?


Our Steam Heating Economizers for low pressure applications are: 4 PSI to 25 PSI, with a hard floor low limit of 2 PSI.

Our Steam Heating Economizers for high pressure applications are: 25 PSI to 145 PSI.

Again we do not change the operating parameters of the system. If the operating pressure control is set at 8 PSI, once released to run, the burner will run until that pressure is reached, and then shut off.


3. Does the controller also modulate the low limit on boilers? If so, what is the highest and lowest temperature the controller will modulate to on the low limit of a hot water boiler? And what is the lowest and highest pressure the controller will modulate to on the low limit of a steam boiler?


We do not modulate, we only delay the start of the burner for more efficient burn cycles. The lowest the IntelliCon will let the water temperature drop in a hydronic boiler is 145 degrees F.

The lowest pressure on a typical steam heating boiler is 2 PSI. We have nothing to do with the telling the boiler to shut of, we do not change the burner off temperature or pressure.


4. On multiple boilers with modulating controls, how does the controller alter control limits without interfering with the existing controls or limits that control the lead lag sequence and operation of the boilers? Do controllers communicate with each other?


On multiple installations, each boiler will have its own IntelliCon control. As we are concerned with the start point of that burner and not the other ones in the boiler room, we are electrically connected between the limit circuit and the burner relay. Lead/Lag or other such controllers (such as Heat-Timer) are not affected and do not affect the IntelliCon. The IntelliCon is concerned with the boiler that it is connected to which is after any and all Lead/Lag controllers.


5. Can the pre-set control curve be field adjusted to account for variations in thermal loads in different buildings?


No, the control curve cannot be field adjusted and it's not necessary to do so. The IntelliCon is installed/connected to an individual boiler/burner system, and that system is in a building that it is sized for. The IntelliCon is self learning and will adapt to any change in operating conditions. Remember, the IntelliCon is monitoring the rate of change of the boilers supply pipe which is directly related to the load on the boiler from the building.