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Type: Posts; User: coens

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  1. Replies
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    Most mini splits you are not reading liquid...

    Most mini splits you are not reading liquid pressure with the two taps on the outside of the unit, the one you think is liquid is actually metered refrigerant. All of the ductless s I have installed...
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    I used 427a on a 15 ton Carrier package unit with...

    I used 427a on a 15 ton Carrier package unit with no oil change. Unit seems to be working good has been in service with that gas for 6 months. Requires only about 90% of the required charge for r22.
  3. Thread: J B Prowler

    by coens
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    633

    Have one used it for a summer, love it. Very...

    Have one used it for a summer, love it. Very sensitive. Picked up a leak from a water cooled condenser that two other leak detectors didn't find.
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    Its not plywood its cedar board, tried to find...

    Its not plywood its cedar board, tried to find the closest wood to match the existing wood in the building. The cedar just needs 100 years to age haha
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    I see what you are saying, I didn't have a 5/8...

    I see what you are saying, I didn't have a 5/8 bender for the suc line and hand bending a tight corner with out kinking the tubing and still making it fit in the line hide 90 would have been very...
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    I believe comfort air is their own company.

    I believe comfort air is their own company.
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    1,795

    In an earthquake prone area the gas line shaking...

    In an earthquake prone area the gas line shaking and breaking issues more of a hazard than a water line breaking. Im not in an earthquake zone are, the reason flex line was used is because it was...
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    25' roughly is the lineset. Used all long radius...

    25' roughly is the lineset. Used all long radius 90's. Actually went to a factory training on these heat pumps and they said they like the min line set to be 10' but if shorter do not adjust the...
  9. Thread: big boiler job

    by coens
    Replies
    6
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    1,507

    County Court house building

    County Court house building
  10. Thread: big boiler job

    by coens
    Replies
    6
    Views
    1,507

    Owners are tracking their natural gas bills. Last...

    Owners are tracking their natural gas bills. Last I spoke to them they were saving close to 1000 a month just on domestic hot water
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    Used concrete anchors to adhear the wood backing...

    Used concrete anchors to adhear the wood backing and used little pieces of 1/2 in black iron cut as spacers to put in between the wood and the concrete to keep it level .
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    These units are sealed up really well, there is...

    These units are sealed up really well, there is even weather stripping along the access to where you make your electrical connections.
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    Viessman boiler project

    462111462121462131462141462151462161462171
  14. Thread: big boiler job

    by coens
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    6
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    1,507

    big boiler job

    Here we took out 2 old 1950's 2.4 million btu a piece and put in 4 701 lochinvars win 2 indirect h20 heaters.

    462081462091462101
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    had nothing to do with the seal tight, the...

    had nothing to do with the seal tight, the condensing units were previously install and they had multiple leaks within the piping so we replaced. i agree it looks like crap. the 90's were to offset...
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    Another 3 ton heat pump

    462041462051462061462071
  17. Thread: Odd yet cool job

    by coens
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    917

    Odd yet cool job

    installed a new condensing unit for a moist cabinet, there is also a custom made coil that we made that sits in the water in the cabinet.

    462011462021462031
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    3-ton inverter heat pump

    Heat pump I put in at an arts center.

    461991462001
  19. Replies
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    1,910

    Cooler and freezer new evaps and repipe

    Job we did re-piping the outdoor condensing units on a walkin cooler and walk in freezer.461971461981
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    We usually have a safety that we put/wire in. the...

    We usually have a safety that we put/wire in. the maintenance guy that takes care of the building said he didnt need one because he is in the mechanical room every day
  21. Thread: Water Furnace

    by coens
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    2,946

    Looks Good!

    Looks Good!
  22. Replies
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    the units have factory LL dries. and the other...

    the units have factory LL dries. and the other cool thing the furnaces were internally trapped so i didnt have to worry about one outside the unit. No state license yet, i am taking the test in...
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    why would i get a new pad when there was cement...

    why would i get a new pad when there was cement already there that i wasnt going to take out. i used benders and soft copper on the inside for the liquid line just to get me outside where i could run...
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    it is black iron. the existing gas piping is...

    it is black iron. the existing gas piping is painted grey
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    Yea the first two years of the program are...

    Yea the first two years of the program are service work then the last two years are the engineering side, pipe/duct work sizing, controls, equipment selection. I had more experienced help there one...
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    First New furace/ac install

    I am a 22 year old 4th year student at Ferris State University in the HVACR program and this is one of the jobs i did over Christmas break before heading back to school. I took out two old 20+ year...
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