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  1. Replies
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    the delta across the heat exchanger was 12 from...

    the delta across the heat exchanger was 12 from inlet to outlet.. so you think its just low water flow? the 30 subcooling seemed like a red flag to me
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    there is no strainer, the balancing valves are...

    there is no strainer, the balancing valves are wide open, and the heat exchanger has been flushed and i ran rydlime through it for an hour. i was taught to take the temp of the water and add 30 and...
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    2 ton trane heat pump

    2 ton trane heat pump thats not getting a good delta t across the evaporator(13-15 degrees). Checked the superheat (12) and subcooling (30). Im thinking a possible restriction due to the high...
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    i did drop them into the bin to clean them. i...

    i did drop them into the bin to clean them. i used a clean rag with a allen key to wipe them off.
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    scottsman ice machine problem

    scottsman ice machine
    model # cme656ae-32a
    S# 121666-12b

    The controller reads full bin when there isn't a full bin. I cleaned the sensors and the unit would run for a few hours then reads full...
  6. Using A/C easy seal by nucalgon on a cap tube system

    I have a small prep table that has a leak that i cannot find. I have heard mixed feelings on using the a/c easy seal by nucalgon. Has anyone used this much? Had any problems afterwards? The system...
  7. pilot problems with and older gordon piatt burner

    we have been having problems with flame failure on an older gordon piatt burner for a boiler. there was a guy from my company there the other day that had adjusted the pilot pressure and air. i got...
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    hey appreciate the info. lol

    hey appreciate the info. lol
  9. Replies
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    reznor direct fire make up air unit

    reznor
    m#RDF1-65

    I got this old make up air unit from 1986 that is having problems staying lit. I only had a few minutes to check it out today and have to return in the morning. no wiring...
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    dayton wall unit question

    I got a troubleshooting problem im a bit unsure about. The unit will call for heat. The pilot will light and when it goes to light the main burner the gas valve starts clicking and making noise...
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    figured it would be cheaper. how much does the...

    figured it would be cheaper. how much does the bosch run? i did find out that if you use a pump with the instant hot water heaters it voids the warranty... so thats out of the question
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    infloor radiant heat questions

    Can a instant hot water tank be used for infloor radiant heat?

    If so what brands and models do you suggest

    I havent done much infloor radiant heat so any suggestions would be appreciated.
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    done. thank you

    done. thank you
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    do you have a link for this design software?

    do you have a link for this design software?
  15. Replies
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    infloor radiant heat question

    Im looking for some information on installing infloor radiant heat into floors joist spaces. Sizing of the lines, maximum lengths of runs... info like that. I havent ever installed just work on it...
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    hydronic heating question

    Im going to be installing an outdoor wood boiler in a friends house for heat but he doesnt want to have baseboard heat. So i suggested infloor radiant heat. For backup he still wants a forced air...
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    i have also ohmed out the windings of the...

    i have also ohmed out the windings of the compressor. I got 1.3 between each.
  18. Replies
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    sorry should of given you guys some more info....

    sorry should of given you guys some more info. This is a data aire heat pump unit ( water cooled). Voltages and amp draws after replacing the fuses look good. Then after a day or so of running the...
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    problem with blowing fuses

    I have a problem with this unit blowing fuses. The fuses are in the compressor curcuit. The only two loads in the curcuit are the compressor and the crank case heater. The cch is wired off the...
  20. anyone have a troubleshooting manual for honeywell economizers??

    could use it for tomorrow if anyone does thanks
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    i guess im not sure how to message him lol

    i guess im not sure how to message him lol
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    it was wired the same as the other one and none...

    it was wired the same as the other one and none of the wiring was damaged.
  23. Replies
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    the module in separate from the motor

    the module in separate from the motor
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    they seemed to work fine on the other rtu. then...

    they seemed to work fine on the other rtu. then when i put them in the rtu that was running in free cooling the unit continued to run in free cooling. Thats why i was confused... i didnt think there...
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    i swapped both parts from another rtu and had no...

    i swapped both parts from another rtu and had no luck
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    yes they did

    yes they did
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    carrier RTU aboiut 10 years old

    When i got on site the rtu was in free cooling mode. There was another identical unit near by. So i first swapped the enthalpy sensor... still ran in free cooling. Then i swapped the honeywell...
  28. Replies
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    tripping on oil pressure

    I got a split system with a trane semi hermetic compressor. The model of the compressor is M# 2F5A58. When i got on site the compressor was tripped on oil pressure. Then I reset the switch and...
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    domestic hot water problem

    I have a domestic hot water system with a recirculation line that is spiking in temperature. There is also a mixing valve that controls the water temp to the space. The one thing i noticed is that...
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    location western new york.

    location western new york.
  31. Replies
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    resisdential sizing question

    I dont usually do alot of sizing of hvac equipment but am attempting on this one. I checked out this duplex house ( two side by side apartments with an upstairs and downstairs on each side) roughly...
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    Ended up splitting the condenser coil and...

    Ended up splitting the condenser coil and cleaning it with foaming cleaner. It was like a blanket in between. so after that was done i checked my superheat and subcooling again... 30 superheat and...
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    Yes i did have the compressor door on when i was...

    Yes i did have the compressor door on when i was checking pressures.
  34. Replies
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    yes it is a adjustable sheave.

    yes it is a adjustable sheave.
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    2001 trane rtu

    Checked out this unit today. The unit was tripped on high head when i arrived. I reset the unit and it started up and ran. I checked pressures on curcuit one i had 55 psi suction, 315 head with...
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    Re Verber Ray Radiant Tube heaters

    There are 3 sets of these radiant heaters twined up... totaling 6 heaters. There has been multiple call backs this heating season for flame failure on these units. Different units every time. The...
  37. Replies
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    well come to find out we have been there numerous...

    well come to find out we have been there numerous times in the past replacing contactors... so this makes sense. I believe it was 20ga wire installed in the unit before i changed it. This would...
  38. Replies
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    there are 7 conductors

    there are 7 conductors
  39. Replies
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    The unit did have small diameter stat wire that...

    The unit did have small diameter stat wire that had been spliced in one spot originally installed. When i seen this i did change out the stat wire. I did check the voltage at the coil after the...
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    well do you have any suggestions as to what could...

    well do you have any suggestions as to what could be causeing the problem?
  41. Replies
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    well do you have any suggestions as to what could...

    well do you have any suggestions as to what could be causeing the problem?
  42. Replies
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    Problem solved... there was multiple contactors...

    Problem solved... there was multiple contactors in the heating circuit that were causing a voltage drop on the low voltage side.
  43. Replies
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    If something was miswired it would have to be in...

    If something was miswired it would have to be in that heating control curcuit?

    What do you mean by breeding through?
  44. Replies
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    the thermostat is about 40 feet away and there is...

    the thermostat is about 40 feet away and there is 7 conductors
  45. Replies
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    What would cause it to draw amperage when it is...

    What would cause it to draw amperage when it is supposed to be off?
  46. Replies
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    Yes it was 24.6 volts sorry i edited the post... ...

    Yes it was 24.6 volts sorry i edited the post...

    I am going to check the voltage to the coil of the contactor when i get back with the replacement contactor. I just dont understand why the 1st...
  47. Replies
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    problem with an older AAON unit form 1992

    The original service call was for no heat... after checking out the unit the transformer was tripping out when the unit was calling for heat. I narrowed the problem down the a shorted 24v coil on...
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    help with in floor radiant heat

    Ill start from the beginning. I went to the customers house there was a leak on the return manifold. I tried to get replacement parts but was unable to... so i replaced the supply and return...
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    r22

    r22
  50. Replies
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    I did brush the condenser coil and blow it out...

    I did brush the condenser coil and blow it out with nitrogen
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