MIL-PRF-62550/1A(AT)
NOTES:
1. Personnel heater must be in accordance with performance specification
MIL-PRF-62550, Type II, Class II.
2. Unless otherwise specified, dimensions are in millimeters (mm). Tolerances are + 1.50
on decimals, and + 1° on angular dimensions.
3. Mounting tabs attached to the 193 - 205 mm diameter for the controls cover may
exceed the envelope by no more than 26 mm.
4. No fasteners or raised, sharp edges are allowed in the strap space areas. The diameter
for these areas shall be between 200 and 205 mm.
5. A diameter of 201 + 1 mm shall be maintained for 18 mm starting from the heater
outlet.
6. A diameter of 201 + 1 mm shall be maintained from the ventilation air intake to the top
of the 83 minimum (min) strap space.
7. Referenced documents shall be of the issue in effect on the date of invitations for bids.
8. Interpret according to ANSI Y14.5.
9. This is a critical item.
10. Diameter excluding areas specified by Notes 5 and 6.
11. Opening in controls cover must be at least 26 mm wide and allow not less than 13 mm
access space about the centers of the fuel inlet and air bleed.
12. This part for reprocurement only. For new design use MIL-PRF-62550/2.
13. As long as the remaining drawing requirements are met, fuel inlet and air bleed valve
are not required to be within the controls cover.
14. As long as Notes 7 and 8 and the remaining drawing requirements are met, screw
heads shall protrude above the heater surface by no more than 4 mm.
Custodian:
Preparing Activity:
Army - AT
Army - AT
(Project 2540-A042-1)
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