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Space between the Coil and
4.3 Install Replacement Coil
Note: All legacy Apex A and N coils will be replaced with
square-cut A-coils.
Remove replacement coil from packaging.
1.
Remove rubber plug from suction line connection.
2.
4.3.1 Reinstall TXV (if previously equipped)
Using back-up wrench, remove mechanical fitting
1.
from distributor.
Remove existing O-ring from the outlet of the TXV and
2.
replace with the new O-ring supplied with the replace-
ment coil.
Install TXV assembly and hand tighten the mechanical
3.
fitting. Use back-up wrench and tighten assembly firmly.
Do not over tighten.
18-AH77D1-1A-EN
right wall of the unit
Figure 8
Install external equalizer and hand tighten the fitting.
4.
Use back-up wrench and tighten assembly firmly. Do
not over tighten.
Install TXV sensing bulb on the suction manifold. Wrap
5.
sensing bulb with the new insulation provided with the
replacement coil. Use tie wrap to secure.
4.3.2 Reinstall Orifice Metering Device (if previously
equipped)
Using back-up wrench, remove mechanical fitting from
1.
distributor.
Remove existing o-ring from the copper liquid line
2.
tube and replace with the new o-ring supplied with the
replacement coil.
Install orifice metering device inside distributor.
3.
Install copper liquid line tube on the distributor and
4.
hand tighten the mechanical fitting. Use back-up
wrench and tighten assembly firmly. Do not over
tighten.
Reinstall Schrader valve in the external equalizer port
5.
on the suction manifold. Replace cap.
4.3.3 Coil Installation for Upflow Applications
Attach the horizontal drain pan to the replacement
1.
coil and slide the assembly into the unit. See Figure
9.
Reinstall coil retaining brackets and horizontal
2.
brace(s). See Figure 10.
If equipped, reinstall refrigerant sensor in same loca-
3.
tion as before and reconnect. See Figure 10.
4.3.4 Coil Installation for Horizontal Left Applications
Note: Some replacement coils ship with a horizontal
drain pan extension. For horizontal left or right
applications, install horizontal drain pan extension when
applicable. See Figure 11.
Attach the horizontal drain pan with extension to the
1.
replacement coil and slide the assembly into the unit.
See Figure 12.
When included and applicable, install top baffle
2.
extensions. See Figure 13.
Reinstall the coil retaining brackets. See Figure 14.
3.
NOTE: Replacements for "N" coils will ship with an
additional retaining bracket that will be required for
horizontal left installations.
Reinstall horizontal brace(s). See Figure 14.
4.
If equipped, reinstall refrigerant sensor in same
5.
location as before and reconnect. See Figure 14.
5
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