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  1. Wiring Diagram Needed Continental Chiller

    Good Afternoon,
    The company I work for recently purchased a chiller my technicians were trying to get it up and running to use as a mobile chiller for various job sites that require temporary...
  2. Thanks Samwinter, That helps out immensely. ...

    Thanks Samwinter,

    That helps out immensely. It looks that I would possibly be stuck with trying to find a Honeywell T7067 stat? I don't have the wiring schematic on a newer Trane zone sensor...
  3. Help with Trane RTU controller replacement

    Good evening,

    I have a co worker that visited a site today. The main controller down in the church that has all the temperature adjustments,night setback and scheduling went bad today. The...
  4. It is on natural gas. I did have to go through...

    It is on natural gas. I did have to go through and clean the blower wheel. I also tried to blow.out the secondary heat exchanger and evap coil with co2. It seems that the upper back side.of.the...
  5. the furnace is only 80,000 BT U's . It is vented...

    the furnace is only 80,000 BT U's . It is vented with 2 inch PVC and only goes about 8 feet. I check the outlet of the flue and it is clear. I will pull of the inducer today and take a look at the...
  6. Tripping vent switch on Nordyne furnace issue

    I recently ran into a issue with a tripping vent stack switch on a Nordyne 90% 1 pipe upflow furnace. I found the blower wheel dirty along with a dirty secondary heat exchange and evap coil. I have...
  7. Replies
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    Opinions on Goodman Mini Splits

    Good afternoon,

    I am looking for some reviews/opinions on the Goodman mini splits. I know on the past Goodman has had its problems with quality issues. I also am aware that they have improved...
  8. Telaire Smoke Detector/Test Station question

    I have a new Carrier RTU that has a factory mounted Telaire duct detector. I was told by the local wholesaler that guys are retrofitting Air Products Test Stations on the duct detectors. In my...
  9. Replies
    0
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    684

    Telaire smoke detector test station

    Good evening,

    I have a factory mounted Telaire TSD-CJCO1 duct smoke in my RTU. I tried to get support from Telaire without any luck. I am looking for a compatible remote test station with...
  10. Replies
    8
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    1,787

    The RTU has a W973J1017

    The RTU has a W973J1017
  11. Replies
    8
    Views
    1,787

    I will consult with my technician later on this...

    I will consult with my technician later on this afternoon to confirm if it is has a W973. I will try to get some more information from him also. Thanks for the help thus far.
  12. Replies
    8
    Views
    1,787

    Trane Intellipak control question

    I have a site with an older Intellipak CV RTU. The job currently has an inopperative controller for the day/night setback and temp controls. The customer would like to know if there is a way that...
  13. Replies
    8
    Views
    1,268

    Mitsubishi uses linesets where the gas and liquid...

    Mitsubishi uses linesets where the gas and liquid line are insulated individualy but connected together.
  14. Replies
    6
    Views
    1,520

    It sounds like there is possibly alot of guessing...

    It sounds like there is possibly alot of guessing going on. More info fronm technical standoint would help. Outdoor ambient, indoor temp, amps, pressures, temps. All THE VITAL STUFF!
  15. Replies
    7
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    2,257

    They should have protected those economiser...

    They should have protected those economiser boards but why? Sell more boards. I have prob come across a dozen boards that have had the funky green stuff on.
  16. Replies
    2
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    3,188

    adding oil into hermetic compressor

    Good evening,

    I have a question about adding oil into a hermtic compressor. What is the best process on adding oil to a hermtic compressor. One of our other techs was changing out a 15 ton...
  17. Replies
    11
    Views
    2,182

    The head pressure trip is set at 375/ The...

    The head pressure trip is set at 375/ The ambient the other day was 84 deg adn the head pressure was at 275-280psi. But that doesn't mean it isn't tripping. Just witnessing it is the issue.
  18. Replies
    7
    Views
    2,257

    I have dealt with these darn economizer boards...

    I have dealt with these darn economizer boards for years. On the older Voyagers, the boards start to gather corrosion from the elements over time.
  19. Replies
    10
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    1,181

    Sounds like one of three things. Either both...

    Sounds like one of three things. Either both dont give a crap, dont know any better, or are the business of making and selling control boards. Fix the source of the problem not only the problem.
  20. Replies
    11
    Views
    2,182

    All I have been told is that the owner has to...

    All I have been told is that the owner has to reset the combination low/high pressure control. The high pressure setting was at 375 psi and the low at 20 psi according to the owner. He resets the...
  21. Replies
    10
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    1,181

    My question is, did the tech investigate the...

    My question is, did the tech investigate the reason why the board fried ie. water dripping on it. Or did he just replace it and leave?
  22. Replies
    11
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    2,182

    I stopped by to take peek at it and the low side...

    I stopped by to take peek at it and the low side was @ 25psi but what alarmed me was that the high side was @ 275psi. Box appears to be maintaining temp but will trip low/high pressure control. ...
  23. Replies
    11
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    2,182

    Typical operating pressures for 507 freezer

    Good evening everyone.

    I was asked by a friend to check out his walk in freezer. I normally dont work on refrigeration equipment. It is another animal. Anyway, I was wondering what would normal...
  24. Replies
    7
    Views
    2,257

    Make sure that all the jumpers on the LTB are...

    Make sure that all the jumpers on the LTB are tight and with clean connections. Any smoke detectors wired in that may be causing issue? I hate Trane stats. They have nice features but are not end...
  25. Replies
    25
    Views
    1,685

    I agree with most of everything that was...

    I agree with most of everything that was previously said. But after the RTU reaches setpoint and satisifies, is there still a demand at the LTB for cooild ie. 24volts from y1 to common? Everyone is...
  26. Replies
    5
    Views
    1,541

    AAON Dehum question

    I recently came across a Aaon RTU 6ton I believe R-22. This RTU controls a testing room for a car part supplier. They are trying to control 45-55% rh in this space. Lately the humidity has been...
  27. Replies
    8
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    759

    At their service course in Chicago, their main...

    At their service course in Chicago, their main service guy basically told us that when we walk up to the condenser for a service call, that we should be able to pinpoint the problem in 15 minutes. ...
  28. Replies
    87
    Views
    5,453

    I DID NOT RUN ONE LINESET! Sorry if I didn't...

    I DID NOT RUN ONE LINESET! Sorry if I didn't explain it clear enough. I have one 12 1/2 ton condenser with 1 3/8" suction and 7/8" liq to one circuit on the evap. And I have another 12 /12 ton...
  29. Replies
    87
    Views
    5,453

    I have two two stage condensers single piped into...

    I have two two stage condensers single piped into a dual circuit evaporator. The condensers have fan cycling controls but I also tried running the consers with both fans at full speed. The only way...
  30. Replies
    18
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    3,006

    The sad thing is that alot of this crap goes on...

    The sad thing is that alot of this crap goes on all the time. It sits on the roof and noone can see the abortion someone has created. Makes me sick because I'm a plumb and level guy. Low bid got...
  31. Replies
    8
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    759

    I have installed a few cilty multi systems and...

    I have installed a few cilty multi systems and went to numerous classes. Mitsubishi works soley on correct line sizing, then checking your charts to add the correct amount of refrigerant according...
  32. Replies
    87
    Views
    5,453

    York startup problem

    Hey everyone, I have an issue and I was hoping to get a little insight on. Ill start with my condtion then my problem. Bear with me. I have two 12 1/2 ton 410A condensers, single piped into a 25...
  33. Replies
    11
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    3,361

    I have serviced a NHMC200 several times. They...

    I have serviced a NHMC200 several times. They are very touchy. You are supposed to clean the drain and fill valve every cylinder replacement. These humidifers are nice when they work but seem to...
  34. Replies
    4
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    1,430

    If your talking outside, then the makeup air has...

    If your talking outside, then the makeup air has to be minimum 10 feet away or the exhaust outlet has to be 2ft above the top of the intake or make up air.
  35. Replies
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    1,405

    The screws are ridiculous. They are very simple...

    The screws are ridiculous. They are very simple to troubleshoot. They are like a oversized 80% furnace. Can't beat some of the warranties they offer. Im still in the air with my opinion though.
  36. Replies
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    1,084

    Perfect Rundawg. Thanks!!

    Perfect Rundawg. Thanks!!
  37. Replies
    4
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    1,084

    Yes, I'm pretty sure. The condenser says Johnson...

    Yes, I'm pretty sure. The condenser says Johnson Controls on the outside but that shouldn't matter since they are the same as York
  38. I had an issue like this on a 5 ton prescedant...

    I had an issue like this on a 5 ton prescedant unit. Check the wiring coming from the left hand side in the control compartment from the heating or the blower comaprtment. Trane had issue with not...
  39. Replies
    4
    Views
    1,084

    Johnson (York) IOM Manual

    Hey guys,

    I'm trying to find a iom manual for a johnson/york condenser. M/N J12YCC00A2TLD2
    Tried to go to their website but didn't have much luck. Thanks for any help.
  40. Replies
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    350

    Rheem on demand hot water tank question

    I know this is a HVAC forum but I saw a Rheem on demand hot water tank installed by a homeowner while on a service call. What suprised me was that the flue was ran ino the chimney along with the...
  41. Replies
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    3,530

    look at all the scrap money to be made. They...

    look at all the scrap money to be made. They must have not been warranty compressors or moron did not get credit back.
  42. Thread: Easy service

    by dmd-marc
    Replies
    24
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    3,149

    At least the control access doors arent facing...

    At least the control access doors arent facing each other.
  43. Replies
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    2,595

    Question of the day.... which happens first; the...

    Question of the day.... which happens first; the aux drain pan plugs up or the condensate switch trips?
  44. Thread: MUA question

    by dmd-marc
    Replies
    5
    Views
    722

    I also found their site, thanks. Will have to...

    I also found their site, thanks. Will have to contact them for some manuals. The valve is getting power and losing 120v for some reason. I thought it was the valve to until it had intermitent...
  45. Thread: MUA question

    by dmd-marc
    Replies
    5
    Views
    722

    MUA question

    I recently had a service call for a clicking sound from a direct fired MUA unit. I was told that another contractor had made at least 8 service calls for this issue without any resolution. The...
  46. Replies
    109
    Views
    14,383

    The nice thing about the 5mm tubing is that it...

    The nice thing about the 5mm tubing is that it starts to brong the concensers down to old 10 seer sizes in physical dimensions instead of these tanks everyone else is manufacturing. Also love...
  47. Replies
    109
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    14,383

    Goodman are usually cheaper than the rest but it...

    Goodman are usually cheaper than the rest but it really depends on the install and the contractor doing the job. Goodman has had a bad rep over the years. They offer a great warranty and have...
  48. Replies
    8
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    1,719

    The filters are clean. They get changed four...

    The filters are clean. They get changed four times a year. Im suspect to the dirty coils and or trap issues. I will take neg press reading in corallation with trap sizes.
  49. Replies
    8
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    1,719

    Thanks, I think it may be the dirty coil more...

    Thanks,

    I think it may be the dirty coil more than the traps. But I will keep all options open. I will measure the traps/pressure tomorrow. The traps have been in place for 10 years. So i'm...
  50. Replies
    8
    Views
    1,719

    Mcquay AHU leaking water

    I have several 5-15 ton AHU with dx cooling in an attic of a facilty. Until recently, a few of the ahu's have been leaking water. The problem is that they are not filling up the drain pans. They...
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