Boiler Modulation Ratio’s & Key Benefits Explained

//Boiler Modulation Ratio’s & Key Benefits Explained

Boiler Modulation Ratio’s & Key Benefits Explained

There are many commercial, industrial and domestic gas, oil and biogas boilers available, all with different modulation ratios. What does the term mean and how does the modulation ratio benefit energy and maintenance costs, below we explain this.

Over recent years most manufacturers of boilers have listed their products modulation ratios but it is up to us the mechanical, heating and energy services professionals to specify which best suits our customers needs.

Contact us at (01)8293875 or email info@acaraenergy.ie for more information.

 

In simple terms, the modulation ratio is a boiler’s ability to reduce its maximum output to its minimum output.  A small modulation range gives a poor ratio (3:1) whereas a large range provides a good ratio (10:1).

Example: A boiler has a maximum output of 30kW and a minimum output of 7.5kW its modulation ratio is 4:1.  Meanwhile, a boiler with a maximum output of 30kW and a minimum output of 3.3kW has a larger (hence better) modulation ratio of 9:1.

To class a boiler as having a good modulation range its minimum output should be 1/6 or 1/5 of its maximum output.

Contact us at (01)8293875 or email info@acaraenergy.ie for more information.

 

One of the most important reasons for good modulation ratio is as follows.

1: Good boiler modulation ratio reduces periods of ON/OFF boiler cycling, this improves energy efficiency and the boilers life span.

A boilers maximum output is 150kW, modulation range is 4:1, boiler will only modulate down to 37.5kW.

A boiler with a large maximum output and good modulation ratio will be able to modulate down to a low output resulting in fewer ON/OFF cycles which increases fuel efficiency.

 

Contact us at (01)8293875 or email info@acaraenergy.ie for more information.

 

Good modulation ratios offer a number of benefits:

1: Increased fuel efficiency.

2: End user comfort.

3: Boiler longevity.

4: Reduction in maintenance costs.

 

Contact us at (01)8293875 or email info@acaraenergy.ie for more information.

2017-01-04T20:57:05+00:00 January 4th, 2017|General|

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