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Recent content by drfox

  1. drfox

    FM 200 Need help with budget $ info

    Thank you for the info. It was just what I needed. I have learned a bit more than I expected. Also about NOVEC 1230 which may replace some FM200 applications. All of it usefull for the next project. Thanks again!
  2. drfox

    FM 200 Need help with budget $ info

    I'm just the mech estimator. But I favor the air side. I know the basics of what FM 200 and some other "clean agent" extinguishing compounds are but only interested in the cost of retrofit projects. I looked back at previous posts and found a $65/lb for the agent,(?) but how do you...
  3. drfox

    Hot tapping a chilled water system

    Hey naraloka! You posted a question on the end of an old topic. You may want to repost as a new thread. As to your question, I only can offer this; Lots of surface area. Good luck. Fox
  4. drfox

    Hot tapping a chilled water system

    Looking for info, pitfalls or ? in determining a job involving tapping an 8" supply and return from a central plant for a small job. Approx 2" will be used. Capacity is not an issue. I am just looking for info like,,, "better have lots of buckets nearby" or need 3' clearance...
  5. drfox

    Backpressure on domestic heating/cooling systems

    imac has good advice. Don't throw good money into a bad situation. If you are unsure of what you have, simply measure the ducting, draw out a floor plan and use the handy dandy 'ductulator' and get the facts on what you have to work with. If the equipment is undersized, experience says the...
  6. drfox

    Ventilation Using Stack Effect Principals

    This may be a silly question,,, Heat of course rises, but this air is ladden with humidity. Will the principal of gravity venting perform well regardless of how many openings there are in the roof?
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