MIL-PRF-24775A(SH)
1.2.5 Heater requirement. The heater requirements of air conditioning fan units are as follows:
Item A1
-
Cooling unit with low voltage heater
Item A2
-
Cooling unit with medium voltage heater
Item A3
-
Cooling unit with high voltage heater
1.2.6 Motor protection. The motor protections of air conditioning fan units are as follows:
Motor Protection LVP
-
Low voltage protection
Motor Protection LVR
-
Low voltage release
1.3 Part or identifying number (PIN). PINs to be used for horizontal and vertical type air conditioning fan-coil
units acquired to this specification are created as follows:
24775
-
X
X
XX
X
X
X
M
Prefix for
Specification
Type (see
Size (see
Class (see
Grade
Heater
Motor
Military
Number
code
code
code
(see code
requirement
protection
Specification
below)
below)
below)
below)
(see code
(see code
below)
below)
Heater
Motor Protection
Type Code
Size Code
Class Code
Grade Code
Requirement
Code
Code
Motor
Type
Code
Size
Code
Class
Code
Grade
Code
Heater
Code
Code
protect.
H
A
1
1
RH
RH
HI shock
1
A1
A
LVP
1
V
B
2
2
LH
LH
Type X
2
A2
B
LVR
2
NMH
C
3
3
A3
C
NMV
D
4
4
5
5
6
6
7
7
8
8
Examples: M24775-A2RH1A2
M24775-B8LH2B1
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This
section does not include documents cited in other sections of this specification or recommended for additional
information or as examples. While every effort has been made to ensure the completeness of this list, document
users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this
specification, whether or not they are listed.
2
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