Document MMzM22bq54NjNeOjevq792bwj

e R e g iste r d e liv e ry vo lu m e s in c o lu m n 1 ore fo r soro le n g th o f d u o t. g ro u p ). each in v a lu e ; rJ^egister^Delivery Volume in CFM' per 1000 B T U per H r. ....... (For Buildings 'Having aH eat LossGreater than SSO^OOO-BTU/Hr.) ....... T b 'm p b b a t u r e , R e g is t e r T e m p e r a t u r e a n d R e g is t e r . D e l iv e r y (CFM) 378 ?'r M `.iil !.'''. CHAPTER 20 1955 Guide Forced Warm Air Systems Table 5. Determination of Free Area and Total Pressure Loss of Register for 22 Deg Deflection .of Aik .h'c'd. - ' Register Free Area in Square Inches (Upper value in each group) Pr1/T TSiftQ ttl Tn/'koo nf Vtfntar l T /> ___I \ CpM Up to 59 Residential Use Reg. Size Pbeb- OB BUBE Equiv Lose alent 10 x 4 10 x 6 .01 ,01 60-69 10 x 6 12 x 4 .01 .02 70-99 10 x 6 12x6 .02 : ,02 Residential Use Cfm 100-119 Reg. . Size OB Equiv alent 12x6 14x4 PRESSDBS Loss .02 .02 120-129 12 x 6 14x6 .02 .02 130-169 14 x 6 ;o2 CPM 700-739 740-779 780-819 Distance Fbom Regibtbb to _________Opposite Wall - i 35-35 40-49 60-69 60-69 70-79 A ]l 243 186 I 127 85 0.02 0.031 0.06 0.11 271 208 141 94 0.02 0.03 0.05 0.10 170-189 14x8. .02 lo w e r e u p ). (U s o .r ug t cBh n ea 1000 i r e e u p l va te er in u pp m u r (U ee eet pe f R e g is te r te m p e ra tu re , F a h re n h e it. R e g is te r d o liv o ry v o lu m o in e u b io i A: .Se l e c t io n o f T able i. - )! / jf AB A' 'B'' I08?, it is pertoi^i ^>5^ n distance ^rom register to opposite wall is unsatisfactory on account of size or pressure 9uiremeat8 fall in one or more spaces left or ngnt in the tables to obtain a more suitable register. If re- b Total n lank 8pace' se^ect two registers m place of one and divide CFM capacity between the two registers, include stacked (atftt* pluf> velocit'y) loss * based on FLAT FACE ADJUSTABLE BAR TYPE and dots NOT ^ halls. a 4 VaJu , ^ne ^ and -A' should not be used in applications such as churches, auditoriums, and eon-- ter8, cUrtiWina8andfschoobftI1<* shoul<I not ** 086(1 applications such as residential wo rk, motion picture thea- Por floor and baseboard registers where a velocity of approximately 300 FPM ia used, the free area = fojj. X 144 Approximately, 5TM Assume a pressure loss of 0.01. ,' ^