Document 0LynzaLmwK97xy9R0ZrX44NmO

500 CHAPTER 19 1957 Guide Table 12. Determination op Free Area and Total Pressure Loss of Register for 22 Deg Deflection of Air * " "' Register Free Area in Square Inches (Upper value in each group) Pressure Loss in Inches of Water (Lower valuein each group) Cfm Up to 59 Residential j: Use 1 Reg. Size . OB Equiv alent 10 x 4 10 x 6 Pres- 1 BURE Loss .01 .01 j Cfm 100-119 Residential Use . Reg. Size OB Equiv alent 12 x 6 14x4 Pres sure Loss .02 .02 Distance From Register to Opposite Wall Cfm 11-34 35-39 KM9 a>0-59 >0-69 70-79 BO-89 700-739 A' B 243 186 127 i 85 0.02 0.03 0.06j 0.11 60-69 10 x 6 12 x 4 .01 120-129 .02 12x6 14x6 .02 .02 740-779 271 208 141 94 0.02 0.03 0.05 0.10 70-99 10 x 6 .02 130-169 1*4x6 12 x 6 .02 .02 ^ 780-819 230 157 105 0.02 0.05 0.09 Cfm 190-209 210-229 230-249 250-269 170-189 14 x 8 .02 820-859 Distance From Register to Opposite W Up 19-2lj22-24 25-27 28--30|31--34 35-39 40-49 50-59 TO 18 A 68 49 38 29 24 19 0.02 0.03 0.05 0.08 0.11 0.16 860-899 900-930 82 60 45 35 28 23 0.02 0.03 0.04 0.06 0.10 0.13 71 54 42 34 28 22E 0.02 0.04 0.06 0.08 0.11 0.17 84 63 49 40 32 25 0.02 0.03 0.05 0.07 0.10 0.16 940-979 980-1019 1020-1059 254 173 115 0.02 0.04 0.08 278 190 126 0.02 0.04 o.os 304 207 138 0.02 0.04 0.07 332 226 151 108 0.02 0.03 0.07 0.12 360 245 163 118 0.02 0.03 0.06 0.11 390 265 177 127 0.02 0.03 0.06 0.11 -- -- 270-299 300-339 100 76 60 48 38 30 0.02 0.03 0.04 0.06 0.09 0.13 96 73 60 48 37 0.02 0.04 0.05 0.07 0.11 1060-1099 1100-1139 285 190 137 0.03 0.06 0.10 307 204 147 0.03 0.05 0.09 340-379 122 95 78 61 47 33 0.02 0.03 0.04 0.06 0.09 0.18 1140-1179 330 220 158 0.02 0.05 0.09 380-419 420-459 460-499 500-539 540-579 580-619 620-659 660-699 117 94 75 58 39 0.02 0.03 0.05 0.08 0.15 1180-1219 142 113 91 70 47 0.02 0.03 0.04 0.06 0.13 1220-1259 168 135 108 83 56 0.02 0.03 0.04 0.06 0.11 1260-1299 159 126 97 66 0.02 0.03 0.05 0.10 1300-1339 185 147 113 77 0.02 0.03 0.04 0.08 1340-1379 212 169 130 88 51 0.02 0.03 0.04 0.08 0.18 1380-1419 192 147 100 59 0.02 0.03 0.07 0.15 1420-1469 217 166 113 75` ! 0.02 0.03 0.06 o.ia 1460-1500 353 235 169 0.02 0.04 0.08 -- 376 251 180 0.02 0.04 0.08 401 0.02 267 0.04 192 0.07 136 0.13 ur426 0.02 284 0.04 204 0.07 144 0.13 452 0.02 301 0.04 217 0.06 154 0.12 0.22 479 0.02 319 0.04 230 0.06 163 0.12 116 0.2! "5*508 o;02 338 0.03 244 0.06 172 o.n 122 0.20 536 0.02 356 0.03 02.506_JU18C2 JU? * If register selected based on distance from register to opposite wall is unsatisfactory on account of sis P jf re- loss, it is permissible to shift one or more spaces left or right in the tobies to obtain a more suitable regia quirementa fall in blank space, select two registers in place of one and divide CFM capacity between tne b Total pressure (static plus velocity) loss fa based on FLAT FACE ADJUSTABLE BAR TYPE an include stockhead. ande00* 0 Values on the right of line A and A' should not be used in applications such as churches, auditoriums* cert halls. irturethe* ^ Values on right of line B and B' should not be used in applications such as residential work, motion P1 ters, court rooms and schools. CFM Xji- For floor and baseboard registers where a velocity of approximately 300 FPM is used, the free area -- J00 CFM <>r approximately. Assume a pressure loss of 0.01. Warm Air Heating Systems 501 Table 13. Determination of Free Area and Total Pressure Loss of Register for No Deflection of Air **> Register Free Air in Square Inches (Up-per value in each group) Pressure Loss in Inches of Water Column (Lower value in each group) CFM Distance prom Register to Opposite Wall 19-21122-24{25-27|2S-30[31-34| 85-30 1 40-49 150-69 160-69 ISO*-209 62 47 37 30 24 18 0.02 0.03 0.04 0.06 0.09 0.15 660-699 Distance pbom Rkoxsteb i Opposite Wall 35 39 40-49150-59 { 60-69} 70-70 180-59 ii* Ir. 210 143 95 69 49 0.02 0.03 0.07 0.12 0.22 76 45 36 29 22 0.02 0.04 0.05 0.08 0.12 700-739 236 160 107 77 54 0.03 0.03 0.08 0.11 0.21 53 43 0.03 0.04 0.11 740-779 262 179 119 86 61 0.02 0.03 0.06 0.10 0.18 81 50 40 0.02 0.04 0.06 21 0.18 780-819 291 198 132 95 67 0.02 0.03 0.05 0.09 0.17 73 59 47 0.02 0.03 0.05 24 0.16 820-859 320 218 145 105 74 0.02 0.03 0.05 0.08 0.15, 95 77 61 46 32 0.02 0.03 0.04 0.06 0.12 860-899 352 240 160 115 81 0.02 0.02 0.04 0.03 0.14 340-379 120 97 77 0.02 0.02 0.03 40 0.10 900-939- 385 262 175 126 89 0.01 0.02 0.04 0.07 0.13 380-419 119 95 73 0.02 0.03 0.04 940-979 419 285 190 137 97 0.01 0.02 0.04 0.07 0.12 420-459 149 114 0.02 0.03 60 0.07 980-1019 455 309 206 0.01 0.02 0.04 148 105 0.08 0.11 460-499 171 136 105 71 0.02 0.02 0.03 0.06 1020-1059 493 335 223 161 113 0.01 0.02 0.03 0.06 0.11 500-539 160 123 84 0.02 0.03 0.05 1060-1099 530 361 241 173 123 0.01 0.02 0.03 0.06 0.10 540-579 186 143 97 0.02 0.02 0.05 65 47 0.09 0.17 lioO-1139 571 388 258 186 132 93 0.01 0.02 0.03 0.05 0.09 0.17 580-619 213 164 0.02 0.02 111 74 54 0.04 0.08 0.15 1140-1179 416 277 199 141 100 0.02 0.03 0.05 0.08 0.16 620-659 127 85 61 0.04 0.07 0.14 B sitp ^feted based on distance from register to oppo- nerrnr*ui uPaa^ctoryon account of size or pressure loss, it fa to nKtf?iWe * *kift one or more spaces left or right in the tobies artaixT^fi aJ"ore suitable register. If requirements fall in blank itv V?0 registers in place of one and divide CFM capao*y between the two registers. FAcirD. wckhead. )Ius velocity) loss is based on FLAT iR TYPE and does NOT include plicatb^i68 right of line A and A* should not be used in ap- ^ ns such as churches, auditoriums, and concert halls. Phcatfona^,?1!/^* of line B and B' should not be used in ap- ourt ror!L8U a** residential work, motion picture theaters, rooms and schools. For floor aa(j baseboard registers where a velocity of ap proximately 300 FPM is used, the free area = CF^ 144 or ap proximately CFM. , 2 Assume a pressure loss of .01. Por tlny vlume under 190 CFM use Table 12. 1180-1219 1220-1259 1260-1299 1300-1339 1340-1379 1380-1419 1420-1459 1460-1500 446 297 214 151 107 0.02 0.03 0.04 0.08 0.15 476 317. 228 161 116 .0.02 0.03 0.04 0.07 0.14 507 338 243 172 123 0.01 0.02 0.04 0.07 0.13 539 359 258 183 130 . 0.01 0.02 0.04 0.07 0.12 382 274 195 138 0.02 0.04 0.07 0.13 403 290 206 146 0.02 0.03 0.06 0.12 308 218 155 0.03 0.06 0.10 324 230 163 0.03 0.06 0.10 A* B`