ControlTalk Now for the Week Ending April 21, 2013

CTA Awards Steering Committee is the sponsor for this week’s ControlTalk NOW. The extraordinary BB King Blues Club will be the site of the 2013 ControlTrends Awards. Located in NYC’s Time Square, this famous venue promises to enhance the excitement and entertainment of the CTA’s.

Connexx Energy: Get Your Energy Products into the Market with Connexx Energy Software and Control Systems. For all the ControlTrends Community members attending the Haystack Connect 2013, in Chattanooga, TN at the end of this month, make sure you visit the Lynxspring booth and learn more about Connexx. Connecting enterprise energy software and energy control systems has many [Read more…]

Principle of Fire Tube Boilers Part 1

Stromquist and Company does not sell fire tube boilers but we do sell a vast amount of controls for these boilers from manufactures such as Conbraco, Honeywell, Asco, McDonnell & Miller, Maxitrol, and numerous other control manufacturers. The understanding of these boilers is a major concern in our continuing efforts to keep our readers informed.

FIRE TUBE BOILERS:

In a fire tube steam boiler, heat and gases of combustion pass through the tube surrounded by water. Fire tube boilers steam boilers maybe either high or low pressure boilers. The three types of fire tube steam boilers are horizontal return tubular boiler, scotch marine boiler, and vertical fire tube boiler.

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The Correct Way To Do Boiler Bottom Blowdown

Proper boiler blowdown is an essential part of firetube boiler operating proceedures. It is necessary to control the amount of TDS (total dissolved solids) in the boiler water.The total TDS should not exceed 3500 parts per million in a scotch marine boiler. If the blowdown is not controlled, excessive dissolved solids will have a tendency to increase and concentrate to a point that will cause a foaming or a carry over condition which will contaminate the  steam.

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Boiler control retrofits made easy: Product Review the Honeywell Echo

Need to replace the older M series Fireye controls?  Honeywell has introduced  the Honeywell ECHO retrofit solution for replacing the Fireye TFM and UVM FSG controls. The ECHO (R7210M series) controls are a Smart Fit series of controls which allow the contractor to replace the older Fireye M series controls without the extensive wiring required in the past.

The Honeywell ECHO system is based on the standard Honeywell 7800 series controls and all of the standard 7800 series components will work with this control. With the Honeywell ECHO you can now expand the functions that were limited on the Fireye M Series controls to include displays that improve diagnostics and troubleshooting and including the addition of Modbus to connect the equipment to a building automation system.

How easy is the Honeywell ECHO system to install? Simply remove the old Fireye M series control, attach the Echo’s metal conversion frame, and plug in the ECHO control… Add the required purge timing card (if needed), the flame amplifier , and the Flame detector for UV systems…It’s that easy…

While your at it sign up for the Stromquist & Company Boiler Vision Program and save even more !!

So when you need to replace an older Fireye M series control give us a call here at Stromquist and Company and listen to the ECHO….

Proper Heat Exchanger Piping

Over the years I have been asked how to properly pipe a steam heat exchanger. I developed the drawing below to help answer this question. There are other piping additions that can be added according to your needs, and this drawing does not cover all the additions but should serve as a good workable starting point. A few points to remember…1. A vacuum breaker and/or vent should be installed…. 2. The steam trap should be properly sized for the amount of the pounds per hour steam capacity of the heat exchanger, and the trap should be sized for the pressure at the trap not for the inlet pressure of the control valve…3. A properly sized relief valve must be installed on the hot water outlet side to protect the heat exchanger from possible damage due to volumetric expansion.

I hope this answers some questions you may have. If you need more answers please call Stromquist and Company at 1-800-241-9471, and we would be happy to finalize an answer for you.