4520-00-273-1256 HEATER,VENTILATION,DUCT TYPE Index 4520-00-273-1258 HEATER,VENTILATION,DUCT TYPE

National Stock Number:
4520-00-273-1257

Federal Supply Class:
4520

National Item Identification Number:
002731257

Description:
HEATER,VENTILATION,DUCT TYPE

Detail:
A HEAT TRANSFERRING UNIT UTILIZING A SEPARATE SOURCE OF STEAM OR HOT WATER AS THE HEAT TRANSFER MEDIUM. IT CONSISTS OF FINNED PARALLEL TUBES JOINED TOGETHER BY A HEADER OR HEADERS AND IS DESIGNED FOR INSTALLATION IN THE DUCTS OF A FORCED AIR CIRCULATING SYSTEM. IT MAY BE PROVIDED WITH A FLANGED OUTER CASING TO FACILITATE MOUNTING OF THE UNIT IN PLANNED OR EXISTING DUCT WORK. CIRCULATION OF THE HEATED AIR IS ACHIEVED BY USE OF A BLOWER OR FAN NOT INTEGRAL WITH THE HEATING UNIT.


Manufacturer Information:
NSTDSIZET28L3FQN6MODINE MANUFACTURING CO
NSTDSIZET28L41197MODINE MFG CO
S3802-6697080064NAVAL SHIP SYSTEMS COMMAND
S3802-66970T28L80064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
DEPTH7.000 INCHES NOMINAL
DUCT HEIGHT9.500 INCHES
DUCT WIDTH30.000 INCHES
HEAT DELIVERY DIRECTIONHORIZONTAL
HEAT DIRECTING DEVICEFIXED LOUVER
HEAT DISCHARGE OUTLET TYPESTATIONARY
HEAT MEDIUM TYPEHOT WATER OR STEAM
HEAT OUTLET QUANTITY1
HEATING ELEMENT TYPEHOT WATER COIL AND STEAM COIL
HEIGHT39.250 INCHES NOMINAL
INCLOSURE MATERIALALUMINUM AND COPPER AND COPPER ALLOY AND STEEL CORROSION RESISTING
MAXIMUM PRESSURE LIMIT35.0 POUNDS PER SQUARE INCH GAGE
MOUNTING TYPEVENTILATION DUCT
SPECIAL FEATURESMAGNETIC PERMEABILITY SHALL BE LESS THAN 1.2 BEFORE FABRICATION AND NOT GREATER THAN 2.0 AFTER FABRICATION AS MEASURED IN A 200 OERSTED FIELD
WIDTH12.187 INCHES NOMINAL


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