[INCH-POUND] WW-F-2743A May 27, 1998
SUPERSEDING WW-F-2743
October 31, 1989
FEDERAL SPECIFICATION
FURNACES, WARM AIR AND HEATERS, UNIT, FORCED AIR CIRCULATION, OIL- AND GAS-FIRED
The General Services Administration has authorized the use of this specification by all Federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers self-contained, forced-circulation, air heating units designed to distribute warm air for heating purposes either through a duct system for central furnaces or by direct diffusion for unit heaters.
1.2 Classification.
1.2.1 Types, styles, groups, and burner kinds. The heating units will be of the following types, styles, groups, and burner kinds, as specified (see 6.2):
Type I - Central furnace. Type II - Unit heater.
Style A - Upflow, high-boy. Style B - Upflow, low-boy. Style C - Downflow.
Style D - Horizontal flow.
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: Commanding Officer (Code 15E2), Naval Construction Battalion Center, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
AMSC N/A FSC 4520
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