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  1. Thread: R-410a split

    by heykiss
    Replies
    8
    Views
    949

    It was 83 deg. out during start up. Ran in june...

    It was 83 deg. out during start up. Ran in june when it was low 90's. Tripping w/ 77 deg. o.a. Maybe the cond. coil was dirtier than I thought.
  2. Thread: R-410a split

    by heykiss
    Replies
    8
    Views
    949

    R-410a split

    I consider myself a knowledgable mechanic, but I don't understand this one... I installed a 13 seer (Goodman indoor & outdoor coils) 2 ton split w/ t.x.v. 2 summers ago. The system ran w/outdoor amb....
  3. Replies
    16
    Views
    1,954

    The suction pressure is at its lowest at the...

    The suction pressure is at its lowest at the compressor inlet due to press. drop thru piping, which will cause first signs of frost when suction temp. gets less than 32 deg.
  4. Replies
    9
    Views
    3,702

    Most of the time, you get what you pay for.

    Most of the time, you get what you pay for.
  5. Replies
    19
    Views
    4,424

    Why would anyone want to pay a $1 a day in elec....

    Why would anyone want to pay a $1 a day in elec. to run a fan + taco 007 when you can run just the 007 for 10 cents a day ?
  6. Replies
    5
    Views
    2,979

    Oops, sorry K.

    Oops, sorry K.
  7. Replies
    5
    Views
    2,979

    The samsung units are wired different than the...

    The samsung units are wired different than the Mitsu. or sanyo. I believe you run (5) 14 guage conductors between the indoor & outdoor units, w/ 240 power(2 hots & ground from breaker). No neutral.
  8. Replies
    47
    Views
    6,372

    First of all, that is not a heat pump and the...

    First of all, that is not a heat pump and the accumulator was added to the system for flood back problems (look at weld drip). Most obvious, if you could spin back the accum. to its original...
  9. Replies
    46
    Views
    4,252

    4 Janitrol, 5 Bryant?

    4 Janitrol, 5 Bryant?
  10. Replies
    24
    Views
    6,075

    Those Cutler-Hammer contactors are garbage. I...

    Those Cutler-Hammer contactors are garbage. I guess it belongs on that unit.
  11. Replies
    28
    Views
    5,404

    Looks like it used to be a school, fire escape...

    Looks like it used to be a school, fire escape was code for kids in area, but now it's a condo building and they can do this. Still shouldn't be allowed. Could have saved a life.
  12. Replies
    12
    Views
    1,362

    We had to replace a coil that wasn't cleaned...

    We had to replace a coil that wasn't cleaned right, one year, and the pollen with coil cleaner solution hardened in the middle. The coil design on carriers plain suck. Plus, if you face the coil away...
  13. The compressor oil is probably 75% refrig. mix,...

    The compressor oil is probably 75% refrig. mix, causing low sub-cooling.
  14. Replies
    29
    Views
    3,583

    What's your head pressure? Is there a t.x.valve?...

    What's your head pressure? Is there a t.x.valve? Sounds overcharged to me.
  15. Replies
    17
    Views
    4,311

    Come on, get the copper changed out!

    Come on, get the copper changed out!
  16. Replies
    5
    Views
    1,099

    I would just go with a scroll compressor that can...

    I would just go with a scroll compressor that can start with high differential pressures if starting from scratch. I also can see why motor windings may break down with years of high torque starts,...
  17. Thread: Vacuum Time

    by heykiss
    Replies
    8
    Views
    1,443

    I agree Jay, but I don't bother removing shreader...

    I agree Jay, but I don't bother removing shreader cores on anything under 2 tons. As long as I have access to high & low sides. It's usually down to 150 microns when I get back from break.
  18. Replies
    26
    Views
    3,200

    Even if you had the right g.p.m. thru the coil,...

    Even if you had the right g.p.m. thru the coil, there's no way your going to get 15 tons of cooling with the supply & return backwards (no counter flow). I bet your air side t.d. is less than 10 deg....
  19. Replies
    21
    Views
    1,427

    My co. has a safety info. sheet with every...

    My co. has a safety info. sheet with every paycheck, and a safety meeting 6 times a year. I was bored at first. Now I think of my children whenever I want to save time and create a potential hazard....
  20. Replies
    20
    Views
    3,416

    The unit sometimes freezes? Start there.

    The unit sometimes freezes? Start there.
  21. Replies
    12
    Views
    926

    Then I would guess the tech. was not reading the...

    Then I would guess the tech. was not reading the suction line temp. accurately. Maybe using an infrared instead of a thermocouple. I'd say it's good to go.
  22. Replies
    24
    Views
    1,576

    Do you have a time delay thermostst?

    Do you have a time delay thermostst?
  23. Replies
    12
    Views
    926

    I'd like to know how you can have 22 deg....

    I'd like to know how you can have 22 deg. subcooling, 23 deg. t.d., and 27 deg. superheat. If you have low air flow, the superheat would be around 12 deg. If the airflow is o.k, then you're...
  24. Replies
    15
    Views
    1,978

    You will be o.k. if there's a t.x.valve. If cap...

    You will be o.k. if there's a t.x.valve. If cap tube, the 13 seer factory charge and extra subcooling will cause too low of a superheat. You'll have to recover some refrig. to get 14 deg. s.h. at...
  25. Thread: crane?

    by heykiss
    Replies
    26
    Views
    2,039

    Been there, the last few feet are the toughest,...

    Been there, the last few feet are the toughest, just when you're out of gas.Struggling to get it over the edge of the roof will make you wish you called the crane guy.
  26. Replies
    21
    Views
    3,397

    I would have made up a new proposal defining...

    I would have made up a new proposal defining Carrier as the equipment to be installed. The noise issue is most likely a design problem, not a brand problem (which he should address). You can't give...
  27. Replies
    29
    Views
    5,911

    Lifted one of those up the side of building once,...

    Lifted one of those up the side of building once, but for the last time. 166 lbs., two guys, bulky weight. If I don't see a crane on the jobsite, it doesn't get done, too bad.
  28. Replies
    5
    Views
    788

    As you found out the hard way, running reset with...

    As you found out the hard way, running reset with temp. setback has its drawbacks. Can you override the Tekmar control for a couple of hours in the morning and run the boilers at 185 deg. for short...
  29. Replies
    37
    Views
    7,580

    You will lose a little c.f.m. through a dry 3/4...

    You will lose a little c.f.m. through a dry 3/4 inch. pvc. on posative side. How much ?
  30. Replies
    20
    Views
    9,920

    I keep hearing about no valves at the expansion...

    I keep hearing about no valves at the expansion tank, why not?
  31. Replies
    26
    Views
    3,006

    Have an opened mind when arriving at a service...

    Have an opened mind when arriving at a service call. Listen to the customers version of the problem as a starting point, but don't let them tell you what the solution is (they called you). Get all...
  32. Replies
    4
    Views
    1,363

    Just plan on zero co-operation on warranty...

    Just plan on zero co-operation on warranty compressors!
  33. Replies
    56
    Views
    7,288

    Hate to say it, but it looks like that has been...

    Hate to say it, but it looks like that has been off for a day or so and it's venting somewhere, causing the refrigerant in the logged oil to boil off.
  34. Replies
    28
    Views
    4,033

    Those 13 seer units will become 11 seer at...

    Those 13 seer units will become 11 seer at best.Fla.?You got hacked.
  35. Replies
    12
    Views
    1,395

    Sizing central air with manual-J is the way to go...

    Sizing central air with manual-J is the way to go if you close up the house for the hot months and leave the t'stat at say, 74 deg. The problem is when you go to work and set up the t'stat to 80 and...
  36. Thread: TRUE Freezer

    by heykiss
    Replies
    8
    Views
    3,341

    You can wait up to 20 minutes before that...

    You can wait up to 20 minutes before that evap.fan delay makes. The door switch can be a problem too.
  37. Replies
    18
    Views
    1,444

    With 46 deg. outdoor air temp.,is'nt there a fan...

    With 46 deg. outdoor air temp.,is'nt there a fan cycling control on the outdoor unit to limit the coil temp. thus load? If not, and if that 46 deg. is humid air, you're overloading the indoor coils...
  38. Replies
    52
    Views
    9,270

    Putting in fixed orifaces in a coil is the...

    Putting in fixed orifaces in a coil is the equivalent of having a bunch of cap tubes feeding a bunch of seperate coils off of a common liquid line.When one feeds too much,it causes less flow to...
  39. Replies
    5
    Views
    2,007

    I'm having problems with a Novar panel and little...

    I'm having problems with a Novar panel and little tech support.No wonder nobody is replying to Novar questions.
  40. Replies
    5
    Views
    1,151

    Des Champs has many options.I like the...

    Des Champs has many options.I like the thermo-pipe over the thermo-wheel.Out of Va.
  41. Replies
    14
    Views
    3,885

    Once saw short radius 90's on hot gas line going...

    Once saw short radius 90's on hot gas line going to remote
    condenser. Had 300# @ condenser, 370# @ chiller. Seven elbows along the way up to roof. Next service call please.
  42. Replies
    19
    Views
    5,262

    I like to insulate the liquid line in those hot...

    I like to insulate the liquid line in those hot atticks.Nice job for sure.
  43. Replies
    28
    Views
    4,579

    "Hope the middle cond. unit doesn't run high head...

    "Hope the middle cond. unit doesn't run high head press.
    on a 90+ deg. afternoon."
  44. Replies
    77
    Views
    10,838

    Just checking, do you have a fresh air intake at...

    Just checking, do you have a fresh air intake at the return plenum?
  45. Replies
    17
    Views
    1,499

    I would think you are going to need a lot of...

    I would think you are going to need a lot of solar cells
    and batteries to take care of any a/c, even 3 tons.Batteries don't last for ever,more maintenance than geo.
  46. Replies
    3
    Views
    1,169

    We installed a bunch of ultra's in southeastern...

    We installed a bunch of ultra's in southeastern Ma. two years ago and have had service calls on about 3% of them due to minor issues (ignitor modules,inducer draft motors,a couple of main...
  47. Replies
    7
    Views
    3,606

    Just wondering if anyone else is frustrated with...

    Just wondering if anyone else is frustrated with carriers new econo. board for small tonnage packaged units?You know the one where you have to count how many times the red,yellow,and green lights...
  48. Replies
    11
    Views
    948

    Yep,I guess I'll just ask for some o.t.That guy...

    Yep,I guess I'll just ask for some o.t.That guy can put in a few window units.Thanks.
  49. Replies
    11
    Views
    948

    Now and then I get a small ( on the weekend)...

    Now and then I get a small ( on the weekend) split system install.This time, a neighbor of a previous job asks me to install a/c for his second floor. I said I would come over to take a look. Then he...
  50. Thread: Poor Cooling

    by heykiss
    Replies
    16
    Views
    2,619

    beenthere,6-8 deg. is my starting point,then set...

    beenthere,6-8 deg. is my starting point,then set s.h.,then depending on seer (forgot to mention), i would add refrig. for 8-13 deg sub. because if it's only 85 deg. outdoor amb. i would worry about...
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