1、MIL-H-3177B 1 September i966 MILWY SPECIFICATION HEATERS, COOLANT, WGINE: MULTIFLTEL-BURNING, 2bVOLT DOC This specification is approved for use by a11 Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope This specification covers 24-volt direct-current, multifuel-burning, forced
2、-draft, engine-coolant heaters. 1.2 Classification. The coolant heaters shall be of the following nominal capacities, as specified (see 6.2) : Capacity A - 15,000 Btu per hour. Capacity B - 30,000 Btu per hour. Capacity C - 60,000 Btu per hour. 2. APPLICABLE COCUMENTS 2.1 The following documents of
3、the issue in effect on date of invitation for bids or request for proposal form a part of this specification to the extent specified herein: SPECIFICATIONS Federal W-F-800 W-G-76 PPP-B-601 PPP -B - 62 1 PPP-B-636 PPP-F -320 PPP-P-40 - Fuel Oil, Diesel. - Gasoline, Automotive. - Boxes, Wood, Cleated-
4、Plywood. - Boxes, Wood, Nailed and Lock-Corner. - Boxes, Shipping, Fiberboard. - Fiberboard; Corrugated and Solid, Sheet Stock (Container Grade), and Cut Shapes - Packaging and Packing of Hand Tools. FSC 2990 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
5、HS-,-,-MIL-H-3377C 29 9999906 0383292 Lt a Military MIL-P- MIL-V-173 MIL-P-514 MIL-T-704 MIL-G - 30 5 6 MIL-C-5015 MIL-T- 5624 MIL-L-O MIL-w-6858 MIL-W-86U MIL-A-11755 1-13486 MIL-P-14105 1-23827 MIL-L-46167 STANDARDS Militaq MIL-STD-O MIL-STD-129 MIL-STD-130 MIL-STD-461 - Preservation-Packaging Met
6、hods of. - Varnish, Moisture-and-Fungus-Resistant (for Treatment of Communications, Electronic, and Associated Equipment) . - Plates, Identification, instruction and Marking, Blank. - fieatment and Painting of Materiel. - Gasoline, Automotive, Combat. - Connectors Electric, “A“ Type. - Turbine Fuel,
7、 Aviation, Grades - Lubricating Oil: Aircraft instrument, - Welding, Resistance : Aluminum, JP-4 and JP-5. Low Volatility. Magnesium, Nonhardening Steels or Alloys, Nickel Alloys, Heat-Resisting Alloys, and Titanium Alloys; Spot and Seam. - Welding, Metal Arc and Gas, Steels, and Corrosion and Heat
8、Resistant Alloys; Process for. - Antifreeze, Arctic-Type. - Cable, Special Purpose, Electrical: Low-Tension, Heavy Duty Single Con- ductor and Multiconductor. I - Paint, Heat-Resisting (For Steel Surfaces) - Grease, Aircraft and instrument, Gear and Actuator Screw. - Lubricating Oil, internal-Combus
9、tion Engine, Arctic. - Sampling Procedures and Tables for Inspection by Attributes. - Marking for Shipment and Storage. - Identification Marking of US - Electromagnetic interference Military Property. Characteristics Requirements for EQuipment 2 Provided by IHSNot for ResaleNo reproduction or networ
10、king permitted without license from IHS-,-,-MIL-H-3177C 29 W 9999906 0183293 b mf MIL-STD-810 MIL-STD-889 MS2 5331-4 39061 Mi351321 - Ehvironmental Test Methods. - Dissimilar Metals. - Light Assembly, Press to Test - Switch, Toggle, SPST, SPEI?, 24 Volt, - Pump, Fuel, Electrical - 24 Volts Indicator
11、. D.C., 25 Amp (Waterproof). D.C., 25 G.P.H. Capacity. (Copies of sjiecif i.cati.onr; and 8 tandards required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The followin
12、g documents form a part of this specification tothe extent specified herein. the issue in effect on date of invitation for bids or request for proposal shall apply. Unless otherwise indicated, AMERICAN IRON AND STEZL INSTITUTE (AISI) Steel Products Manual (Application for copies snould be addressed
13、to the American Iron and Steel Institute, i50 East 42nd Street, New York, NY lOOl7.) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) Power Test Code - Supplement on Instruments and Apparatus. Part LO - Flue Exhaust Gas Analysis. (Application for copies should be addressed to tne American Society 100
14、17.) of Mechanical Engineers, 345 East 47th Street, New York, NY COUNTY OF LOS ANGELES - AIR POLLUTION CONTROL DISTRICT Rule 66 - Organic Solvents, (Application for copies should be addressed to the County of Los Angeles - Air Pollution Control District, 434 Angeles, CA 90003.) S. San Pedro Street,
15、Los 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t MIL-H-3L77C 27 m 979790b 0183294 m 3.1 Description. The heater shall consist of a burner, combination combustion-chamber and heat-exchanger, combustion-air blower and fuel- metering and evaporiz
16、ing arrangement all assembled in one unit with necessary integral control devices, plus compatible but separate ac- cessories including a control box, wiring harness, fuel filter, fuel pump, coolant pump, and pressure relief valve. The heater shall be achptable for installation in either a horizonta
17、l or vertical position within the overall dimensions shown in Table I and with the coolant . discharge connection at the highest point. Table I. Maximum Installation Dimensions Position Height Width Length Capacity 171 7“ 20 7 7 11 26 9 A Horizontal 11“ 17 7 u B Horizontal ll B Vertical 20 C Horizon
18、tal 13 26 9. 13 A Vertical C Vert i cal NOTE: The control box, fuel pump, fuel filter, coolant pump, or com- bustion air inlet danper (see 3.12) need not be confined within the dim- ensions specified in Table I. Nl performance in tilted positions is also required (see 3.8.3.1) 4 3.2 First article (p
19、reproduction model). The supplier shall furnish two heaters for examination and testing within the time frame specified (see 6.2), to prove prior to starting production that his production methods will produce heaters that comply with the requirements of this specification. Examination and tests sha
20、ll be as specified in Section 4; and, unless otherwise specified herein, all examination and tests shaU be conducted by the supplier subject to surveillance and approval by the Government (see 6.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-._
21、_ I_- -_-I-.-_._ .I_- - - - -_-_- _- - flIL-H-3177C 29 I 9999906 0183295 T I M IL-H - 377C 3.3 Material. Material shall be as specified herein, Wterials not specified shal be selected by the supplier and shall be subject to all provisions of this specification. 3.3.1 met als ) fied in Dissimilar met
22、als Nonpermissable gavanic couples (dissimilar as defined in MIL-STD-889, Type II shall be insulated as speci- Section 5 of MIL-STD-889. -. 3.4 Fasteners. All screws, bolts, nuts, and other fasteners which are not inherently corrosion-resistant shall be cadmium-, zinc- or nickel-plated to resist atm
23、ospheric corrosion under the environmental conditions specified herein, not be used. Sheet metal or self-tapping screws shall 3.5 Environmental conditions. The heater shall function under the following environmental conditions: During operation in ambient temperatures from plus 80“ F to minus 65“ F,
24、 After exposure to conditions of rain, humidity, salt fog, sand and dust, vibration, and shock as specified in MIL-STD-810 and in Section 4 herein. After storage at ambient temperatures of plus 155“ F with dewpoint not over 85“ F for 4 hours daily for a period of 2 days and at minus 65 “ F for 72 ho
25、urs. (a) (b) (c) 3.6 Safetx. All moving parts and parts which are subject to high operating temperatures or- are energized electrically shall be insulated, fully enclosed, or guarded. Protective devices shall not impair the operating functions. as specified in 3.8.3 and 3.8.4.2. or operation of the
26、heater shall be identified as early as possible in the life cycle and eliminated or suitably controlleci as required by MIL-STD-882. Possible sources of fuel leakage should be located where fuel cannot; contact hot surfaces or electrical. companents. Fire hazard shall be minimized by automatic funct
27、ions Hazards associated with the handling 3.7. Maintainability. The heater shall provide for quick disconnection and demouriting so that maintenance and adjustment can normally be ac- complished indoors. When denounted, all parts and assemblies of the heater shall be accessible for servicing, repair
28、, and adjustment . required shall be the minimum consistent with required performance. as practicable, adjustments shall not be disturbed by disassembly required for cleaning and checking, or shall be readily returnable to correct settings. All practicableprovision shall be made to preventthe possib
29、ility of misassembly of components and subassemblies . Service adjustments Insofar 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3L77C 27 7777706 OL3276 L 3.8 Performance. 3.8.1 Heat output. When tested in accordance with 4.5.4.5, the heate
30、r shall conform to tne heat output requirements specified in Table II. Table II. Minimum Heat Output Capacity Heat to Coolant Btu/hr Exhaust Back Pressure A 13,500 at 5“ HgO B 27,000 at e75 H20 1.00 H 0 2 C 54,000 at The above minimum shall be otained when operating in minus 50“ F ambient temperatur
31、e, consuming diesel fuel in accordance with W-F-800, Grade DF-A. 3.8.2 - Fuel. The heater shall operate witnout adjustment and as speci- fied herein on any of the following fuels: (a) (b) (c) (a) (e) Gasoline conforming to MIL-G-3056, Type II. Jet fuel conforming to MIL-T-5624, Grades JP-4 and JP-5,
32、 in ambient temperatures above the pour and cloud points of the fuel. Gasoline conforming to W-G-76, reguiar grade. Leaded or aromatic fuels up to 100-octane grade. Diesel fuel conforming to W-F-800, Grades DF-A and DF-1, in ambient temperatures above the pour and cloud points of the fuel. 1 3.8.3 C
33、old starting. The heater shall start and operate at 19 volts electric input within the time periods specified using the fuels at the ambient temperatures specified in Table III. Combustion shall become selfsustaining, clean, and steady within the specified time periods. Table III. Cold Starting Ambi
34、ent Temperature Fuel Time Period, Minutes Minus 65“ F Gasoline, MIL-G-3056, Tyye II 3 Minus 65“ F Jet fuel, MIL-T-5624, Grade JP-4 3 Minus 50“ F Diesel fuel, W-F-800, Grade DF-A 4 6 n - - . . . .- .e.$ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
35、MIL-H-3377C 29 I 9999906 0383297 3 mr When specified (see 6.2), an automatic control system shall carry out the designed starting cycle after the main control switch is operated. automatic control system shall cut off electric power to the heater fuel pump, and coolant pump when combustion is not ob
36、tained within minutes after the control switch is turned to “ON“ position. reset of this switch or of a circuit breaker shall be necessary to initiate another starting attempt after automatic cutoff because of com- bustion failure. The t Manual 3.8.3.1 Cold starting and operation in tilted positions
37、. The heater shall start and operate a6 specified herein continuously for not less than 1 hour when tilted i5 degrees in each .of the four directionsfrom level position in either the horizontal. or vertical installation-adaptation (see Table I) . 3.8.4 Operation. After combustion is stabilized with
38、each of the fuels at the temperatures specified in Table III, operating characteristics of the heaters shall be as specified in Table IV. shall be obtained with 24-volt de power supply and shall include inputs to the fuel pump and coolant pump with coolant conforming to MIL-A-11755 initially at ambi
39、ent temperature at the pump intake. Power input re- quirements in Table IV are to be measured after heater ignition and do not include ignition requirements. to be measured 12 inches beyond point of discharge from heater. The power input values Exhaust temperatures under Table IV are Table IV. Opera
40、ting Characteristics Power Input, Watts, Fuel Rate, Exhaust Capacity Total Max. Lb/200 F 1,200 F 3.8.4.1 Combustion. During stabilized operation in accordance with 3.8.4 above (including each of the three temperature-fuel corubinations), com- bustion shall continue to be self-sustaining, clean, and
41、steady. dioxide content of the exhaust gas shall be not less than 8.0 percent, aiid the smoke reading shall be not more than 1 on a Bacharach smokemeter or the equivalent reading on other approved device. Carbon 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
42、rom IHS-,-,-MIL-H-3177C 29 m 9999906 0383298 5 I 3.8.4.2 Automatic functioning. The following functions in addition to those required for starting (see 3.8.3) shall be accomplished automatically: L Purge unburned fuel and cool combustion chamber after every initiation of the “cutoff“ cycle regardles
43、s of whether ini- tiation is accomplished manually or automatically. blower and coolant pump sMJ. continue to operate during this purge period. exceed 4 minutes. Cutoff operation in event of combustion failure resulting from exhaustion of fuel supply or blockge of inlet air. reset shall then be nece
44、ssary to reinitiate the starting cycle. Cutoff operation when the temperature of coolant returning to the heater reaches 100 to 120 F, and start it again when the coolant-return temperature reaches 50“ to 60“ F. Keep an indicator lamp lighted on the control box Or panel, whenever cornbustion is sust
45、ained in the heater. Cutoff operation if the coolant temperature should reach 230“ F at the outlet of the heater. reset to restore operation. Protect motors against overheat and provide one or more circuit breakers as practicable to protect circuitry against shorts or overload . The The time period
46、for purging shall not Manual This cutoff shall require manual 1 3.8.5 Service life. When tested as specified in 4.5.412, the heater shall operate without structural failure. There shall be not more than two occurences of leakage or of malfunction or performance-deterioration requiring cleaning, adju
47、stment, or replacement of parks. 3.8.6 Electromagnetic interference. The electromagnetic interference emission and susceptability characteristics of the heaters shall conform to MIL-STD-461, Class III C . 3.9 Fuel pump. The electrical fuel pump furnished with each heater shall conform to MS51321-2.
48、system of the heater. The pump shall be controlled by ?he control 3.10 Coolant pump. The coolant pump may be integra3 with or separate from the heater. heater control system, shall operate whenever there is sustained combustion In either case the pup shall be controlled by the ? Provided by IHSNot f
49、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-3177C in the heater, and shall discharge into the heater jacket. Pump inlet and outlet (except if the pump is integral) shall be threaded, 3/4 inch NPT, female, and fitted with hose-to-pipe adapter for 3/4 inch ID hose. pump shall have a permanent shaft seal and shall b
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