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    Thanks glennac, When you say round duct, do you...

    Thanks glennac,
    When you say round duct, do you mean rigid or alumaflex ?
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    414

    Air flow question

    Checking out a American Standard unit 2YCX3060 for poor performance. Found some air flow problems. The unit has 2 floor return grills that have 10" duct pipe. The filters are laying right over the...
  3. Filter shell has small weld leak / repair ideas requested

    Hi everyone,
    I found a small leak in a suction filer shell and am wondering what might be the best way to repair it. It's a BTAS-313-V brass suction filter shell. The leak is at the bottom of the...
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    488

    I can borrow a flow hood from PG&E training...

    I can borrow a flow hood from PG&E training center to read cfm. A static pressure reading could also work provided I can get a chart from the furnace mfg. My airflow check so far has been to make...
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    The charging chart is gone, rotted out, so is the...

    The charging chart is gone, rotted out, so is the condensing unit identification plate. The condenser is a older unit, the A coil and furnace are new. The compressor is a Copeland ZR36K3 Rated at...
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    Would larger increase suction?

    Would larger increase suction?
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    488

    Would a smaller size piston increase suction...

    Would a smaller size piston increase suction pressure? The evaporator TD was 17F. No temp diff across liquid filter, No difference in pressures with air filter out.
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    Refrigerant metering problem

    A customer has their furnace and A coil replaced this last winter and wanted the air conditioner charge checked for summer operation. Its a R-22 3 ton system. The A coil is a R-22 AllStyle non-TXV...
  9. @Dallas Duster-- this unit has a single internal...

    @Dallas Duster-- this unit has a single internal pump.

    What we have found --- even though the water fill valve was open, it was not filling the system We manually added water by removing one of...
  10. Nuclrchiller, Yes they are about 3 ft. away from...

    Nuclrchiller,
    Yes they are about 3 ft. away from the unit. I reversed the gauges because thought the return gauge was broken but it is not. I cleaned and flushed the taps.
  11. I found the domestic water valves are open to the...

    I found the domestic water valves are open to the system. There is a back flow preventer then a pressure regulator, the valves are all open. I don't know why they are open or if the should be. The...
  12. Carrier 30RA chiller return water pressure

    Hello,
    I have a customer that has a chilled water system for a school building that has a flow error code. The system has a supply water pressure of 35 psi and the return pressure is about 0-5psi....
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    Just wanted a second opinion. There is no...

    Just wanted a second opinion. There is no readable wiring diagram on the unit. One thing I didn't mention, when I first got there and turned on the unit after it had been off all night, it clicked a...
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    Rheem RGAA-08EC gas valve issue

    I was on a no heat service call this morning (Sat)on this Rheem unit. I was finding that the pilot would light and stand for 20 sec. or so and then I would hear solenoid clicking, the pilot would...
  15. Girgling noise at unit start-up and shut down

    Customer has 2 story house, furnace and A coil in attic horizontal. Customer hears girgling when it starts and shuts off. Lennox with TXV. Is this normal ? If not what can be done to keep it quiet?...
  16. Would a evaporative cooler still be the best MUA?...

    Would a evaporative cooler still be the best MUA? I don't know if they make them that small 1200 cfm? The area where the restaurant is located is on a river edge and the humidity ranges from 26% on...
  17. Restaurant kitchen exhaust hood / make up air problem

    I have a customer that has a kitchen that is open to the dining area and the stove area has a 1500 cfm exhaust blower. Next to the hood they have a 5000 cfm evaporative cooler running at full speed...
  18. I've installed 5 Fugitsu systems and they all...

    I've installed 5 Fugitsu systems and they all work great. Customer support is also excellent.
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    Are you checking/replacing the start contactor?...

    Are you checking/replacing the start contactor? /// What barbar said?
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    I just installed 2 Fugitsu units. They are...

    I just installed 2 Fugitsu units. They are awesome! The bigger unit is a ASU15RSL2 and is 21 SEER the smaller was 25. All the Fugitsu units I have installed work great and they are a little less...
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    410A evaporator coil conversion to R-22

    Has anyone had any experience with a 410A coil TXV conversion to R-22? I have been told that a 036 coil is to small for a R-22 036 condenser. If that is true would you use a bigger coil like a 048...
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    Found it .... Southwire EZ-IN Mini Split Cable

    Found it .... Southwire EZ-IN Mini Split Cable
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    Mini Split communication cable

    Hello, I was trying to find the cable mfg that I saw advertising on this site. The electrical cable was for mini-split unit communication. Did anybody happen to write it down? Thanks for any help.
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    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
  25. Siemans 24v contactor coil keeps failing

    Hi, I have a problem with these 75 amp contactors. Last week I found both compressor contactor coils shorted. ( 2 compressor unit) I find it odd that they would both go exactly at the same time. The...
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