MIL-PRF-62550/3A(AT)
NOTES:
1. Personnel heater must be in accordance with performance specification
MIL-PRF-62550, Type I, Class I.
2. Unless otherwise specified, dimensions are in millimeters (mm). Tolerances are + 1.50
on decimals, and + 1° on angular dimensions.
3. No fasteners or raised sharp edges are allowed in the strap space areas. The diameter
for these areas shall be 160 mm.
4. A diameter of 158 + 1 mm shall be maintained for 18 mm min starting from the heater
outlet.
5. The connector 13 mm center may be within 32 mm to the controls cover centerline. If
it is perpendicular distance from the heater's shell remains at 33 mm.
6. Referenced documents shall be of the issue in effect on date of invitations for bid.
7. Interpret according to ANSI Y14.5-1982.
8. This is a critical item.
9. Diameter excluding areas specified by Notes 3 and 4.
10. Opening in controls cover must be at least 25 mm wide and allow not less than 13 mm
access space about the centers of the fuel inlet and air bleed.
11. As long as the remaining drawing requirements are met, fuel inlet and air bleed valve
are not required to be within the controls cover.
Custodian:
Preparing Activity:
Army - AT
Army - AT
(Project 2540-A042-3)
3 of 3
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