9. Wrap the bulb with supplied insulation and secure
with supplied cable tie (Figure 4).
The entire length of the bulb must be in firm
contact with the gas line. The remote bulb tubing
must not be allowed to touch a surface colder
than the remote bulb location. The remote bulb
tubing must be isolated from rubbing all other
components.
Do not allow copper and aluminum materials to touch.
Maintain a minimum of .25" between copper and
aluminum material to avoid galvanic corrosion which
may lead to coil leaks.
Equalizer Line
Fitting
Position the Bulb
between 10 and 2
o'clock in-line with
copper gas line for
best results
Insulation and
Cable Tie
Copper
Aluminum
Push-in
Cable Tie
If needed, wrap copper
lines to prevent touching
aluminum and allowing
galvanic corrosion
10. Pressurize with dry nitrogen and leak test all joints
to ensure no leaks exist. Evacuate system to a
minimum of 500 microns.
11. Verify that all distributor tubes are positioned over the
drain pan to ensure distributor tubing condensate is
collected.
12. Open valves to outdoor unit if pumped-down or
charge to a minimum of 50 psig static pressure.
Start system and charge to appropriate level per the
charging method recommended in the Outdoor Unit
Installer's Guide.
Figure 4
About Trane and American Standard Heating and Air Conditioning
Trane and American Standard create comfortable, energy efficient indoor environments for residential applications.
For more information, please visit www.trane.com or www.americanstandardair.com
The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are
committed to using environmentally conscious print practices.
© 2020
88-A4AH4TXV-1C-EN 19 Jun 2020
Supersedes 88-A4AH4TXV-1B-EN (October 2019)
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