Document noYMQgbOnKY6odqyr86nRb86

Air System Equipment Registers and Grilles Air Diffusers W. B. CONNOR ENGINEERING CORP. 114 East 32nd Street, New York 16, N. Y. Representatives in All Principal Cities In Canada: Douglas Engineering Co., Ltd., Montreal. P. Q. KNO-DRAFT Adjustable AIR DIFFUSERS KNO-DRAFT Adjustable Air Diffusers insure efficient air distribution, maximum secondary air induction, noiseless and draftless diffusion, and uniform temperature throughout the occupied zone, regardless of season or ventilation requirements. Every KNO-DRAFT unit is easily and quickly adjustable for individual or seasonal require ments. The same KNO-DRAFT Diffuser is equally effective to expel chilled air parallel to the ceiling or eject heated air downward to prevent stratification. TYPE KDA FOR SUPPLY AIR--At tractive--light, yet sturdy--for high or low ceilings orattachment to exposed ducts. Anti-smudge rim prevents streaked ceilings. Sizes4in. to 36 in. neck diameter for capaci ties from 50 to 15,000 cfm per unit. TYPE SRD FOR SUPPLY AND RE TURN AIR--To simplify duct work.. Sizes 6 in. to 24 in. supply-air neck diam eter for supply capacities from 50 to 2,500 cfm per unit, with central, return neck area 75 per cent of supply neck area. The KNO-DRAFT Diffuser will effectively distribute large volumes of air--pre mixing room and supply air. It permits the use of higher duct velocities--resulting in smaller ducts and lower costs. Duct designs are simplified and fewer outlets are required. KNO-DRAFT Diffusers are simple in construction, light in weight, and easily installed. KNO-DRAFT Diffusers are geometrically proportional, size for size, insuring like resistance at like neck velocity for any size--and balanced static pressure throughout the system. THE TYPE D AIR VOLUME CONTROL is designed for application exclusively to KNO-DRAFT ADJUSTABLE CEILING AIR DIFFUSERS. It is furnished already assembled within the diffuser and requires neither field assembly nor attachment to ducts, angle rings or other external appurtenances. Type D Air Volume Con trol is adjusted and tested before shipment and ready to function when the diffuser is installed. Its operation is en tirely independent of the air direction ad justment which is part of all standard KNODRAFT Air Diffusers. Type D Air Volume Con trol complements the func tion of the air diffuser. It varies only the quantity, not the characteristic of the air distribution. With it, a series of diffusers may be balanced with out affecting the air diffusion efficiency. With KNO-DRAFT TYPE KD ADJUSTABLE CEILING AIR DIFFUSERS the desired air pattern for any room or zone is AT YOUR FINGER TIPS Kno-Draft Diffusers are covered by U. S. Patents Nos. 2,865,867; 2,869,119; 2,482.289 and others+Pcnding; Canadian Patents Nos. 429,206; 448.285. 1100 W. B. Connor Engineering Corp. Regis ters Air System Equipment and Grilles Air Diffusers APPEARANCE The KNO-DRAFT Adjustable Air Diffuser lends itself well to any architectural or indus trial requirement. Its simple, unobtrusive appearance and functional design make it an attractive air conditioning accessory in any commercial or manufacturing area. UTILITY An air diffuser is the sole "point of contact" between the conditioning system and the people it serves. If the diffuser is not adjustable after installation everything about that "point of contact" must be decided in advance. This can impose an often difficult, and always unfair, limitation on the designer. Air diffusion, especially in a room not yet built, can be a hazardous element to predict with complete accuracy. Air movement requirements, in a structure already built, may sometimes change with relocation of heat-producing equipment, people, or partitions. The advantage of ad justment after installation offers a new approach to this phase of the system design problem. With KNO-DRAFT Adjustable Air Diffusers, the behavior pattern of an air distribution system can, within fairly wide limits, be con trolled, hence altered, after, installation. INSTALLATION--Removable self-contained inner assembly cuts installation time anil costs. ECONOMY The economy of the KNO-DRAFT Adjust able Air Diffuser is a combination of three distinct economies, each contributing an added control over costs. INSTALLATION--The self-contained re movable inner assembly can reduce installation time by as much as 50 per cent. Where ceilings already exist the outer cone is attached to duct or collar quickly and easily. BALANCING--A minimum of time and effort is required to balance a KNO-DRAFT air distribution system. The single annular air stream permits immediate and accurate velometer reading. Desired air supply ratios may be rapidly obtained by adjusting the volume control dampers. ADJUSTMENT -- By simply raising or lowering the inner-cone the diffuser is adjusted for any direction of air discharge from vertical to horizontal. By adjusting the volume control damper the air supply may be increased or de creased at will at individual points or zones. AIR DIRECTION ADJUSTMENT--Raising or lowering inner assembly proiddes any air direction angle--after installation. BALANCING--Single air stream allows direct velometer reading of volume immediately. NEW CATALOG AND HANDBOOK --This new catalog contains in one com plete and concise manual all the data necessary for the proper selection of air diffu sers. Much information onair diffusion in general is in cluded. Write for Bulletin K-20. AIR VOLUME ADJUSTMENT--Twist of wrist regulates air volume instantly after instal lation. (See pages 1020 and 1021 for data on DOREX Air Recovery Equipment) 1101