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  1. Replies
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    532

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

    Thanks glennac,
    When you say round duct, do you mean rigid or alumaflex ?
  2. Replies
    4
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    532

    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...
  4. Replies
    13
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    584

    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...
  5. Replies
    13
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    584

    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...
  6. Replies
    13
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    584

    Would larger increase suction?

    Would larger increase suction?
  7. Replies
    13
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    584

    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.
  8. Replies
    13
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    584

    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....
  13. Replies
    3
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    1,166

    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...
  14. Replies
    3
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    1,166

    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.
  19. Replies
    20
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    1,750

    Are you checking/replacing the start contactor?...

    Are you checking/replacing the start contactor? /// What barbar said?
  20. Replies
    24
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    5,160

    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...
  21. Replies
    6
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    928

    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...
  22. Replies
    1
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    394

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

    Found it .... Southwire EZ-IN Mini Split Cable
  23. Replies
    1
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    394

    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.
  24. Replies
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    2,843

    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...
  26. ORI -- Opens on Rise of Inlet pressure ,, ORD...

    ORI -- Opens on Rise of Inlet pressure ,, ORD -- Opens on Rise of Differential pressure
  27. Replies
    21
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    2,108

    Sometimes I try to "weigh out" the charge when...

    Sometimes I try to "weigh out" the charge when recovering. If you can find a nameplate charge it gives an idea. I'm sure the dirty condenser didn't help anything.
  28. Replies
    21
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    2,108

    High discharge temp, over charge?

    High discharge temp, over charge?
  29. 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....
  30. Replies
    9
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    990

    Yes the unit I'm working on is running. I have...

    Yes the unit I'm working on is running. I have 50lb recovery tanks. Could I attach a line from the unit liquid reciever to the liquid tank port and a line from a suction port to the tank vapor port...
  31. Replies
    9
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    990

    Sorry, I'm wondering if there is a recovery...

    Sorry,
    I'm wondering if there is a recovery machine that would be able to remove 100lb quickly.
  32. Replies
    9
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    990

    100+pound recovery machine?

    Could anyone recommend a setup for recovering a large amount of refrigerant quickly? I currently use a Promax RG6000 which is good but very slow.

    Thanks for any ideas
  33. The unit does have a reciever M/N UR108 I agree...

    The unit does have a reciever M/N UR108 I agree the reciever should be storing the extra refrigerant and not the condenser. It appears that the liquid is not being let out of the condenser when it...
  34. ORI-ORD setup -- 350 lb head, 50 lb suction Problem

    Anyone have problems with this set-up before. I have clean filters liquid and suction. This is circuit B on a SA30 Desert-Aire heat recovery system serving a natatorium. Unit pressures are normal in...
  35. S8610U has bleed resistor from TH-W to ground.

    I found this in a RUUD URGG-05E24JKR unit today. Unit works fine, (after I replaced the rusted out burners) just wondering why the resister is there. Can't find any foot notes on it. Anyone know...
  36. Replies
    6
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    1,684

    Bangor BFGC-5 Freezer case

    Could I please get a copy of that booklet? I have a customer with lighting problem and was hoping to find a wiring diagram or any imformation possible.

    Thanks
    Kirk
  37. Replies
    2
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    667

    GOODMAN GMP-075-3 Ignitor question

    I have a customer that has this unit and HSI comes on 3 times before the gas valve opens gas fires and then it stays on. No fault codes. Any idea why its not firing the firts time th HSI comes on?...
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