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  1. Replies
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    I understand that 3/4 hp can do more work in an...

    I understand that 3/4 hp can do more work in an hour than 1/2 hp can. On paper, the 3/4 should have more torque at 23 ft. lb. than the 1/2 at 15.3 ft. lb.

    Assuming you do not switch motor types,...
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    Yes I was talking PSC

    Yes I was talking PSC
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    657

    Motor HP vs Amps

    I understand the importance of replacing motors by FLA rating. But when doing this, can you change HP as well?

    Example:

    Century D1076 - 3/4 HP, 208/230 V, 1075 RPM, 4.0 FLA
    GE 3588 - 1/2 HP, ...
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    It is about 20-24" inches from the left wall......

    It is about 20-24" inches from the left wall... About 12-16" from the back wall.

    When I was by there it wasn't full of lint yet, but that was only because it was brand new. The yard wasn't even...
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    Not my install...

    Not the best location for a HEAT PUMP and clothes dryer vent.472461
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    Clarification on a textbook example

    Hello,

    I've been reading "commercial refrigeration for Air Conditioning Technicians". There is a statement in there that has me scratching my head a little.

    It is in chapter discussing...
  7. Anyone?

    Anyone?
  8. Which TXV to stock, Sporlan R series or Danfoss TR6?

    I'm trying to decide which TXVs to keep on the van. I try to keep a Sporlan BQ kit handy, but that won't do for heat pumps.

    If the BQ series would through in the internal check, it would cover it...
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    Thanks for all the good information!

    Thanks for all the good information!
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    466

    Thanks for the input. Currently there is no air...

    Thanks for the input. Currently there is no air positively supplied to the room.

    I didnt expect 0 sp on the exhaust but was just stating the fan capacity. The 16 inch duct is just about 4 foot...
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    Burners are clean. They werent the problem. Old...

    Burners are clean. They werent the problem. Old HSI was weak. The GlowFly did better and is in the gas flow. Like I said the gas valve should open slow but isnt...
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    Isn't mercaptan used in LP and natural gas? LP...

    Isn't mercaptan used in LP and natural gas? LP uses copper frequently.
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    Why aluminum tubing for pilots?

    Why is aluminum tubing used for pilots?

    It isn't to save the cost of copper. It might have been at some point.

    Then I thought maybe it was for vibration and stress cracks, but compressors and...
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    I talked to the homeowner. The problem is better,...

    I talked to the homeowner. The problem is better, but not completely solved.

    I've done a little more research and the Honeywell VR8205H8016 gas valve comes up as a slow opening. In watching the...
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    Anyone willing to give me their two cents on this?

    Anyone willing to give me their two cents on this?
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    1,475

    No smart valve.

    No smart valve.
  17. Replies
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    HSI glows but won't light gas

    Get a call for "furnace won't light - sometimes". I hate these. Get there and it operates flawlessly. I probably cycle it 20 times in about a half hour. No problems.

    The HSI has a small hotspot as...
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    Kitchen exhaust fan.

    I have a bakery with a kitchen exhaust fan that hasn't operated since they have been in the building. It wasn't a kitchen before they were there.

    The room is about 32x35 (8 foot dropped tile...
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    I couldnt get a picture but there were a couple...

    I couldnt get a picture but there were a couple small holes as well as about 3x more rust. I'm guessing the ac freezes up somewhat often because there looks to be water running down the inside of...
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    Failed heat exchanger

    Gotta love when it is easy to fail a heat exchanger...459951459961
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    Currently it wont produce enough heat to keep the...

    Currently it wont produce enough heat to keep the fanstat on. The blower cycles but the burner doesn't. I tried to unscrew a couple of the burners but the are froze and the brass on top was...
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    Both are 100k btu, but the replacement is made...

    Both are 100k btu, but the replacement is made for a grill or turkey fryer!



    It's getting replaced... was just joking about repair... No safety devices. The pilot is on a ball valve. Main valve...
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    Looks like a direct replacement,...

    Looks like a direct replacement, right?459361459371
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    I found no problem with the heat exchanger. The...

    I found no problem with the heat exchanger. The round burner is shot. It is a 100k btu unit putting out about 40k by clocking the meter. I tried to work on it and it is seized and brittle.

    If I...
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    Thanks for the confirmation. It's before my time....

    Thanks for the confirmation. It's before my time. I figured units in the 70s had gas valves similar to todays. This had a seperate valve, regulator, and thermocouple control. It was interesting. It...
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