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Type: Posts; User: tonymjr

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    High Static/Right CFM

    I have a 75,000 btu furnace with an 2.5 ton "A" coil. After balancing the system I have the correct CFM at each diffuser but the supply static seems high at a .40. The return static is a .25. ESP is...
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    We looked a a job for a food mart and they have...

    We looked a a job for a food mart and they have an old Engineered Refrigeration System rooftop unit. Does anyone know where we can find information for this unit?
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    Anyone know where I can find info on Enviro-Tech...

    Anyone know where I can find info on Enviro-Tech VAV's?
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    756

    On single phase units you add up the total amp...

    On single phase units you add up the total amp draw of the electric heaters. On a 3 phase heater, do you add or just use one reading from the heater.
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    Are control transformers in HVAC units grounded...

    Are control transformers in HVAC units grounded only for safety reasons?
  6. Thread: Wages part 2

    by tonymjr
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    I can remember when I was at 14-15 per hour I was...

    I can remember when I was at 14-15 per hour I was on call, overhaulin compressors, and working for a Comm/Ind contractor. Today it seem the apprentice/pm guys want an expierenced tech salary doing...
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    Where can I find info on the old time guards?

    Where can I find info on the old time guards?
  8. Thread: STEAM

    by tonymjr
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    If you are having a steam issue with a Hydro...

    If you are having a steam issue with a Hydro system check for a contactor stuck closed.
  9. Replies
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    The fan will only run with the burner off if the...

    The fan will only run with the burner off if the thermostat fan switch is in the on position.
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    Looking for info to size a natural gas line with...

    Looking for info to size a natural gas line with 3 appliances. two at 125,000btu and one at 204,000 btu's.
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    Where is this moved to?

    Where is this moved to?
  12. Replies
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    1,452

    I am looking for pricing information to propose a...

    I am looking for pricing information to propose a full coverage maintenance agreement. The agreement would include pm service,parts and labor. I know LINC contractors sell these types of agreements....
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    Does anyone know who makes a thermostat that can...

    Does anyone know who makes a thermostat that can have up to 5 averging sensors and can be capable of being tied into a computer for remote temperature monitoring.
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    So everyone knows, I put in a 100 ohm resistor...

    So everyone knows, I put in a 100 ohm resistor across P and P1 and the motor drives open.
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    The P and P1 terminals (that use a remote...

    The P and P1 terminals (that use a remote poteniometer) on a Honeywell logic board for an economizer motor, can they be jumped to drive the motor or do you need to add a resistor?
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    We have a new Trane RTU TCH180 unit with...

    We have a new Trane RTU TCH180 unit with economizer. We need to open the economizer dampers if a smoke alarm trips. We jumped P & P1 but it did not drive. These terminals are used for a remote...
  17. Thread: The Boss

    by tonymjr
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    Just looking for some input. We have all worked...

    Just looking for some input. We have all worked for some good and not so good people. I guess good and not so good is not the best way to describe them. My case is how do you deal with someone who is...
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    where can I find info on or how can I size...

    where can I find info on or how can I size transformers and determine fuse protection
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    1,240

    Are the T.E.C.H. Method study books still...

    Are the T.E.C.H. Method study books still available?
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    The purpose of a trap is to create an air seal...

    The purpose of a trap is to create an air seal between the drain pan outlet and the end of the drain line to allow proper drainage. By not having this seal air is allowed to be pulled thru the drain...
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    Bad run capacitor

    Bad run capacitor
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    What are the formulas for calculating cfm on...

    What are the formulas for calculating cfm on oil,natural gas and LP furnaces? Btu input x ? divided by 1.08 x delta T
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    On a contactor it gives two contact amp ratings....

    On a contactor it gives two contact amp ratings. FLA is obivious. Does the resistive rating deal with loads other than motors?
  24. Thread: Hourly wage

    by tonymjr
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    763

    Input needed for the following: New hire about 2...

    Input needed for the following: New hire about 2 months. Was an installer with no service or maintenance expierence.
    Last worked in the field 1997-98. Hired for 13/hr but wanted 14/hr. Boss said we...
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    What make? 1 or 2 loop pumps?

    What make? 1 or 2 loop pumps?
  26. Thread: Milli Volts

    by tonymjr
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    so what does a thermocouple generate ac or dc? I...

    so what does a thermocouple generate ac or dc? I always thought dc
  27. Thread: Milli Volts

    by tonymjr
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    2,366

    well it's a thermopile for a gas boiler

    well it's a thermopile for a gas boiler
  28. Thread: Milli Volts

    by tonymjr
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    2,366

    ac and dc scales

    ac and dc scales
  29. Thread: Milli Volts

    by tonymjr
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    2,366

    What would you set your multi meter to to check...

    What would you set your multi meter to to check for 750mv with no actual mv scale?
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    The water flow lite is blinking because the...

    The water flow lite is blinking because the freeze protection thermistor senses no flow from the pumps. the unit locks out after two trials to start. The control board energizes the pumps thru a...
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    Forgot to mention this valve is non adjustable,...

    Forgot to mention this valve is non adjustable, used on a geo heat pump with side and bottom connections.
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    Had problem today with liquid entering compressor...

    Had problem today with liquid entering compressor thru external equalizer. Anyone else ever see this?
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    Our company uses methanol anti freeze for geo...

    Our company uses methanol anti freeze for geo thermal closed loops. Does anyone know what happens to the viscosity if there is too much methanol and also the heat transfer?
  34. Thread: C3 & C4 oils

    by tonymjr
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    781

    We have a chiller that has Carrier O6D...

    We have a chiller that has Carrier O6D compressors. A technician replaced drier cores and changed oil. He used C4 instead of C3 which I know is the right oil. C4 was used more in R12,11,113...
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    Been working on refrigeration equip. now more...

    Been working on refrigeration equip. now more than ever.
    Had a call today on a R12 converted to MP39 Reach in bev. cooler with glass doors. Found bad contacts on lp switch. Changed out switch but...
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    I'snt superheat part of getting your charge right?

    I'snt superheat part of getting your charge right?
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    Copeland wants to see 20deg @ the compressor. I...

    Copeland wants to see 20deg @ the compressor. I have seen 8 to 10 deg superheat at the suction line just before it enters the condensing unit and 30 to 40 at the suction service valve. The length...
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    Don't you risk the chance of an over charge...

    Don't you risk the chance of an over charge because of the heat picked up in the condensing unit from the condenser fan blowing over the accumulator and suction line?
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    Where is the best place to get the proper suction...

    Where is the best place to get the proper suction line temp when checking the superheat at the compressor in refrigeration applications? I have seen a big difference from after and before an...
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    My supply temp at the honeycomb grill is 28 deg....

    My supply temp at the honeycomb grill is 28 deg. The type of prouduct is packaged bacon, hot dogs, ham, etc. No red meat. Thanks for the replies.
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    I recently started with a new company that does...

    I recently started with a new company that does more refrigeration than any other co. I've worked for. Been doing pm at a small store and while taking psi's and temps I have some questions. Lets take...
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    What terminates the harvest cycle, time or is...

    What terminates the harvest cycle, time or is there a sensor on the evap?
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    Anyone know the formula to size a fuse for the...

    Anyone know the formula to size a fuse for the load side of a transformer?
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    Worked on a Trane SFHCC55 rtu and noticed a 40lb...

    Worked on a Trane SFHCC55 rtu and noticed a 40lb psi drop thru coil. 280 @ dis. svc valve, 240 @ drier inlet, 235 at drier outlet. SH and SC ok unit operates ok. System has 2 circuits with 2 14ton...
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    I like to use a smaller line for equalizers like...

    I like to use a smaller line for equalizers like 1/8 inch. It can take vibrations better than 1/4 inch. As for guage connections, try using a tee with a good schrader or a valve.
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    We've all seen driers rated for small systems be...

    We've all seen driers rated for small systems be installed on large systems. I recently did a job but questioned the drier size. 28 ton circuit with a c-305-s drier. Liquid line is 5/8. I was told to...
  47. Thread: Trane SFHCC55

    by tonymjr
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    1,724

    "2lb per ton" never heard that one. txv's should...

    "2lb per ton" never heard that one. txv's should never hunt if all is correct with the system. and if you overfeed your probably going to flood.
  48. Thread: Trane SFHCC55

    by tonymjr
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    1,724

    Hi Allen, When I recovered the circuit to replace...

    Hi Allen, When I recovered the circuit to replace the compressors, approx 27lb was recovered. We then weighed in the 53lbs (no leaks found when we questioned the 27lbs). After start up we encountered...
  49. Thread: Trane SFHCC55

    by tonymjr
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    Hey Rog, I noticed trane in your name. I have a...

    Hey Rog, I noticed trane in your name. I have a question on the charge data on the name plate. It says TOTAL CHARGE EACH CIRCUIT- CIRCUIT 1 53lb CIRCUIT 2 (is blank) This unit has 2 circuits. My...
  50. Thread: Trane SFHCC55

    by tonymjr
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    Hey Allen, thanks for the info. I thought about...

    Hey Allen, thanks for the info. I thought about it last night and figured it might be overcharged. Arrived to the job and took readings. Found 40 deg subcooling. adjusted charge to 18-20 deg...
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