TR6 thermostatic expansion valve installations

TR6 thermostatic expansion valve installations


[NARRATOR[ Installing the TR6 is quick and easy. [music] [music] Let’s take a look at a typical
installation of a TR6 on an indoor A coil. First, pump down the refrigerant
charge in the unit into the condenser or recovery cylinder. Next, disconnect the
liquid line from the metering device and remove it from the system. If a piston is
installed, as it was in our unit, be sure to remove it. Next, it’s time to braze
the outlet fitting you’ve selected to the TR6 outlet port. If the coil is
equipped with a chatleff fitting that requires a teflon O-ring, remove the
O-ring prior to any brazing in this case our technician is loosely connecting the
fitting to the distributor for stability during brazing. Be sure to wrap the body
of the TR6 with a wet towel or use heat block paste to protect the internal
components. Also be sure to keep the sensing bulb and capillary tube away
from the heat. After brazing the female connector keep the towel in place while
you sweat the connector to the existing 3/8 inch liquid line pipe. Remove the towel, replace the teflon
O-ring if equipped and tighten the outlet coupling. Now the sensing bulb and
equalization port can be installed the sensing bulb and equalization line should
be installed on the suction line after the header. This unit already has the
quarter inch male flare access fitting installed. Connect the tube to an
existing access port or make a suitable connection by either brazing a port into
the line or installing a copper T. Never install the equalization tube on the
bottom side of a horizontal pipe, as oil can clog this port. Now locate a
horizontal section of the suction line and place the temperature sensing bulb
on the top of the pipe. Locate the bulb between 10 and 2 o’clock position. Mount
the capillary tube facing upwards, using the patented copper strap included with
a valve. Tighten the bulb on to the pipe. This will create a slight
indentation into the suction line which ensures excellent heat transfer.
Completely wrap the bulb in all exposed ends with the insulation tape that is
included with the TR6. This will ensure that the bulb is
sensing the refrigerant and not any ambient temperatures. Now with the TR6
installed, perform a leak check on all connections. After ensuring there are no leaks you can properly charge the system,
making sure there is the correct amount of subcooling. Finally, let the system run for 15 minutes for stabilization before checking the superheat. [music]

3 thoughts on “TR6 thermostatic expansion valve installations

  1. you don't charge by super heat with txv so why check it unless there is a problem. The instructions usually say 10 o'clock or 2 o'clock for the bulb position on the pipe. I do not think you tightened the fittings to proper torque. And its never that clean or well lit not realistic must be a fake video. Probably a guy who has never changed one before only in the books.

  2. Heloo sir.. Emerson 10. Kw capacity walking chiller.. Temperatur +5c…using danfose expansion valve.. What wiil be size of orifice in side that

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