Description / Abstract:
This standard establishes the minimum requirements for an
internal heat exchanger (IHX) assembly to be used in R134a, GMW5038
and R1234yf, GMW16283 Air Conditioning (A/C) systems.
Supplier qualification shall be demonstrated for the IHX design
before the supplier may bid on IHX business. To obtain
qualification, the supplier's IHX design shall meet all
requirements of this specification and shall be approved by the
General Motors Bill of Material (BOM) Family Owner (BFO).
This standard does not include the IHX validation requirements
for: brazed/welded fittings, access ports, etc., (covered in
GMW15787), Air Conditioning Refrigerant System Connections (covered
in GMW15787), internal cleanliness (covered in GMW14319) or seal
washers (covered in GMW15779). In addition, this specification does
not include the validation requirements for larger assemblies
containing an IHX. IHX production assembly parts shall be in
accordance with metallic refrigerant lines GMW15773, and lines
containing elastomeric hose, or coupled hose assemblies shall
fulfill GMW14319.