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Exquisite Heat

Thermostat Demand Analysis over time resets burner fire time for steam boiler.This will remove the leads and lags associated with the over and under steam value.Interior space thermostat analysis can anticipate needed heat replacement precisely. . Time based system. Programmable limits of maxi

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Exquisite Heat

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    1. Exquisite Heat For Steam Boilers

    2. Thermostat Demand Analysis over time resets burner fire time for steam boiler. This will remove the leads and lags associated with the over and under steam value. Interior space thermostat analysis can anticipate needed heat replacement precisely. Time based system

    3. Programmable limits of maximum and minimum burner fire times. Time limit minimums avoid boiler fire short cycle. All firings are thermostat initiated, and controlled by system pressure limits. Start up fire times are determined by how long it takes to meet system pressure controls from a cold start. Fire timing

    4. Controller demand analysis (previously discussed) resets fire times, from hour to hour. Burner fire time will be increased or decreased at the end of each analysis period ( 60 min.) in order to meet the ideal thermostat demand ratio. (60%). On mild days this may well allow comfort satisfaction at lower than system pressure limit setting at the boiler. Fire time adjustments

    5. March 27, 2012 5

    7. Algorithm Start-up fire time = the time it takes to satisfy pressure limit from a cold start. (15-90 minutes) Boiler pressure controls and thermostat satisfaction can over ride the fire time.

    8. Test pressure gauges and pressure control. Check piping insulation. Boiler should be making steam within 30-45 minutes. If not the boiler may be undersized. Check that boiler burner rate is high enough to produce good steam. (see boiler instructions) Analyze burner for proper firing and minimum excess air. ( CO2, stack temperature.) Check piping insulation, vents, traps, condensate return lines and boiler water level. Proper Boiler Firing

    9. The amount of time it takes to recover to steam delivery after a break. 10-40 minutes Minimum = Fire Time 10 min. Minimum burner fire time

    10. Each building has its own rhythm. Factory settings can be adjusted if needed by the installer. Break time

    11. The goal is to have the thermostat satisfied into the break. There are savings and comfort advantages as the thermostat is satisfied after the burner is off. The thermostat overrides all calls for burner firing. Break time

    12. If the thermostat does not call heat for more than one hour the controller set back to “Start up time”, at thermostat activation. Should the thermostat be satisfied at any time, the boiler will be shut down and a break begins. Start up Time

    13. Maximum Burner Time 45-90 minutes Fixed break time 10-90 minutes. Start up burn time: 20, 30, 45, 60, 90 min. Min Burn time : 10 minutes.(short cycle prev.) Ideal demand ratio .5, .6, .7, .8 Analysis time: 40, 60, 90 minutes All variables are changeable

    14. Thermostat activity analysis within the hour will determine the increase or decrease adjustment of the burner fire time in the following hour. Actual demand ratio vs. Ideal demand ratio determines + or - to length of fire on time, adjustment from previous hour calculated fire time. Algorithm

    15. Actual demand ratio = 70 Ideal Demand ratio = .60 (.70-.60)=.10 x 10= 1 time change factor Time increment factor= 2 minutes Previous hr. fire time 30 minutes 1 time chg.. factor x 2 min = +2 min Prev. fire time 30min + 2 min= 32 min New Burner fire time 32 min (increase) Fire Time change

    16. Steam Systems require annual maintenance inspection and service by a professional steam expert and periodic weekly owner system checks.

    18. Boiler water level. 1/3-1/2 water in fill glass Pressure monitoring .5-2.0 lbs Blow down auto refill devices to remove rust Watch it cycle for a full two firings to verify pressuretrol safety operation. Check for short cycling. Check for continuous boiler firing. (longer than 40 minutes) This means you need to talk to your boiler service to explain. Check that all radiation is getting steam. Weekly Checks

    20. Steam is delivered as soon as it is generated. Traveling at great speed it will satisfy BTU demand quickly. It is most important that all system components are in good working order as designed. It can not be overemphasized, that complete inspection service and repair maintenance be done, annually by a professional. System Service

    21. Boiler firing rate and oil nozzle size must be proper for the boiler to have efficient heat exchange from the fire to the waterside. If the nozzle is too small the boiler will take forever to heat. Steam pressure should be met in less than 30 minutes. If not have the boiler fire size checked by a professional boiler person. See manufacturers suggested gallons / hour. This information can be found at manufacturers website. Boiler Firing

    24. Many systems have had the asbestos insulation removed. Few replace the insulation due to the added expense. With fuel prices going up, insulation return on investment is becoming very attractive. The system was designed to work with insulated pipes. Most steam systems can be reinsulated for 5-10 dollars per pipe foot. You are wasting the heat in the pipes if you do not. System Insulation

    25. Proper boiler piping measurement check. Testing cleaning and repair of: air vents, traps, safety controls, chimney inspection, flue gas analysis, heat exchange cleaning, make up water supply rate, piping insulation, condensate return systems and boiler water, fuel supply and storage. Proper venting of boiler room for fresh air and fire prevention. System Components

    26. Out door temperature changes take hours before being reflected in interior heat loss. Boiler is on before it is needed. This causes uneven over heating, and open windows. Indoor thermostat takes all heat loss into consideration from the occupied space, where the people are. No wasted heat. Outdoor temperature

    27. We strongly urge all owners and managers of steam systems to begin their search for complete information about their steam heating equipment with a visit to Dan Holohans’ web site : http://www.Heatinghelp.com Dan has a great library from beginner to advanced for heating information. References

    28. Steam heat now has the opportunity to be comfortable and efficient with the intelligent management offered by Exquisite Heat control. www.Exqheat.com 914-588-4791 John Cockerill US Patent: 6,402,043 Comfort

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