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Simplify Boiler Reset Control for Efficient Heating Solutions

Don't let boiler control be complicated! Learn how to improve energy efficiency with simple adjustments. Understand the basics of boiler operation, reduce standby losses, and enhance heating performance. Explore options and programming for optimal results.

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Simplify Boiler Reset Control for Efficient Heating Solutions

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  1. Boiler Reset Control It doesn’t have to be complicated!

  2. Your Customers’ #1 Concern! • Energy efficiency • Cars • Lights & appliances • Home heating • What aboutboilers? • Replace? • Improve?

  3. Some Basics… • Heat loss • Size for “coldest day” • < 3% of heating season • Install for “coldest day” • Heat loss varies • ↑ as it gets colder • ↓ as it gets warmer

  4. More Basics… • Heat supplied must = heat lost • Boiler is one size • Heat emitters one size • How do we keep from overheating? • Fewer BTU’s needed • Shorten run time

  5. Still More Basics… • Short-cycling • Shortens run-fraction • Kills cycle efficiency • More wear & tear • Greater standby losses • Inefficient operation • Stop & go city driving

  6. Add Boiler Reset! • Matches boiler output to heating load • Automatically adjust boiler temp • Colder out – hotter water • Warmer out – cooler water • ↓ boiler temp – use less fuel • Reduce standby losses • Reduce losses to unheated spaces • Conservative savings estimate: • 5 to 15% for CI, non-condensing boiler

  7. 5 to 15%? That Ain’t Much… • Or is it? • Older home using 1,200 gallons/yr • Split the difference – call it 10% • Save 120 gallons • At $3.75/gallon – that’s $450.00 savings! • A good investment?

  8. So, What’s Involved? • Taco PC-700 & EXP relay • E-Z installation • E-Z wiring • E-Z programming

  9. How Does It Work? • Calculates required boilertemp based on weather,programming • Tells boiler when to fire& target temp • Monitors differential • Prevents short-cycling • Automatic adjust • “Partial” reset – non condensing boilers

  10. Problem… • 3 zones w/indirect • 7 year old boiler • Gas conversion - $9K • Homeowner goal:use less fuel,save $$ • Easy reset!

  11. A Priority On Here’s What We Have: Control for 3 heating zones + DHW priority Using SR 504

  12. Boiler Reset Made Easy • Option 1: • Keep SR 504 • Add SR 501-EXP relay • Add PC-700 Boiler Reset control • Option 2: • Dump SR-504 • Add SR 504-EXP • Add PC-700 Boiler Reset control

  13. A T T DHW Circulator Option 1

  14. A T T Option 2

  15. Min: 10 seconds Max: 7 Minutes Plug-In Power Port Cards • PC-600 – Post Purge Timer • PC-605 – Priority Protection • PC-610 – Pump Exercise

  16. Installing The Sensors • Boiler sensor: • 1 Boil • 3 Com • Outdoor sensor • 2 Out • 3 Com

  17. The Boiler Sensor • Strapped to piping – not too tight! • Insulate for accuracy • Downstream from an elbow

  18. The Outdoor Sensor • Flush mount or electrical box • North facing wall (usually) • Out of direct sunlight • Away from dryer vent, etc • Above snowline!

  19. Programming • Two menus • View • Adjust • Three buttons • Item • Up/Down arrows

  20. The View Menu • Press Item button to scroll • Startup • Outdoor Temp • Boiler Temp • Boiler Target

  21. Programming Made Easy! • PC-700 factory programmed! • Settings for typical Northeast US system

  22. The Adjust Menu • BOIL Start • OUTDR Start • BOIL DSGN • OUTDR DSGN • BOIL MIN • DIFF • WWSD • Units

  23. Reset Myths • Reset can’t be used withCast iron/non-condensingboilers… • Reset can’t be used withindirect water heaters… • You need an engineeringdegree to figure ‘em out… • Reset’s not worth the $$$... • Can’t use reset with baseboard…

  24. Sterling Slant/Fin Baseboard Ratings

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