TRANE 18-AH76D1-1A-EN Replacement Coils Installation Guide
- June 9, 2024
- Trane
Table of Contents
TRANE 18-AH76D1-1A-EN Replacement Coils
Safety
warning
Only qualified personnel should install and service the equipment. The
installation, starting up, and servicing of heating, ventilating, and air-
conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted, or altered equipment by an
unqualified person could result in death or serious injury. When working on
the equipment, observe all precautions in the literature and the tags,
stickers, and labels that are attached to the equipment.
HAZARDOUS VOLTAGE!
Failure to follow this Warning could result in property damage, severe
personal injury, or death. Disconnect all electric power, including remote
disconnects before servicing. Follow proper lock out/tag out procedures to
ensure the power cannot be inadvertently energized.
CAUTION
Failure to follow proper procedures can result in personal illness or injury
or severe equipment damage. System contains oil and refrigerant under high
pressure. Recover refrigerant to relieve pressure before opening system.
warning
This product can expose you to chemicals including lead, which are known to
the State of California to cause cancer and birth defects or other
reproductive harm. For more information go to
www.P65Warning.ca.gov
BRAZING REQUIRED – IF USING MECHANICAL CONNECTIONS, ENSURE LEAK TEST IS
NEGATIVE!
Failure to inspect lines or use proper service tools may result in equipment
damage or personal injury.
If using existing refrigerant lines make certain that all joints are brazed,
not soldered.
Inspection
- a. Unpack all components of the kit.
- b. Check carefully for any shipping damage. If any damage is found, this must be reported immediately and a claim made against the transportation company.
- c. Check to be sure all components are in the package. Any missing components should be reported to your supplier at once and replaced with authorized components only.
General Information
For all heat pumps, RunTru cooling, and Ameristar cooling units: Replacement
coils are identical to the production coil.
For Trane and American Standard cooling units only: Replacement coil may or
may not be identical to the production coil (including coil height). This
replacement coil has been verified to perform the same or better compared to
the production coil.
It is recommended to change the filter drier when replacing the coil.
NOTE: In some cases, the replacement coil will require minor adjustments for proper installation.
Installation
NOTE: One or more of the below listed modifications may need to be performed to install the replacement coils. See Figure 1.
- a. If the gas manifold extends too far below the discharge connection, remove an appropriate amount of tubing from the gas manifold on the replacement coil.
- b. If the original unit contains an internal filter drier, it is recommended to convert to a filter drier external to the cabinet.
- c. If the liquid valve connection tube on the replacement coil does not reach the liquid service valve, brazing an extension is required.
Figure 1: Generic Example to Outline the Recommended
Modifications
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.
Representative-only illustrations included in this document.
18-AH76D1-1A-EN 26 Oct 2022 Supersedes (New)