Document jBzN1va0e4MZVqN0VX2gvL5o9

508 CHAPTER 19 1958 Guide Table 12. Determination op Free Area and Total Pressure Loss op Register fob 22 Deg Deflection of AiR**b'c',i`e Register Free Area in Square Inches (Upper value in each group) Pressure Loss in Inches of Water (Lower value in each group) Cm Up to 59 Residential Use Reg. Size OB Equiv alent 10 x 4 10x6 Pres sure Loss .01 .01 Cpm 100-119 Residential Use Reg. Size OB Equiv alent 12 x 6 14x4 Pres sure Loss .02 .02 Cpm 700-739 Distance From Register to Opposite Wall 50-59t 60-69 31-34 35-39 40t49 70-79 80-89 1A Il' 243 186 127 85 0.02 0.03 0.06 0.11 60-69 10 x 6 .01 120-129 12x6 12 x 4 .02 14 x 6 .02 .02 740-779 271 208 141 94 0.02 0.03 0.05 0.1C 70-99 10 x 6 .02 130-169 14 x 6 12 x 6 .02 .02 780-819 230 157 105 0.02 0.05 0.09 Cm 190-209 170-189 14x8 .02 Distance From Register to Opposite Wall Up 19-21 22-24 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 0.16 820-859 860-899 900-930 254 173 115 0.02 0.04 0.08 278 190 126 0.02 0.04 0.08 304 207 138 0.02 0.04 0.07 210-229 82 60 45 35 28 23 0.02 0.03 0.04 0.06 0.10 0.13 940-979 332- 226 151 108 0.02 0.03 0.07 0.12 230-249 71 54 42 34 28 22 0.02 0.04 0.06 0.08 0.11 0.17 980-1019 360 245 163 118 0.02 0.03 0.06 0.11 250-269 84 63 49 40 32 25 0.02 0.03 0.05 0.07 0.10 0.16 1020-1059 390 265 177 127 0.02 0.03 0.06 0.11 270-299 100 76 60 48 38 30 0.02 0.03 0.04 0.06 0.09 0.13 1060-1099 285 190 137 0.03 0.06 0.10 300-339 96 73 60 48 37 0.02 0.04 0.05 0.07 0.11 1100-1139 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 0.09 380-419 117 94 75 58 39 0.02 0.03 0.05 0.08 0.15 1180-1219 353 235 169 0.02 0.04 0.08 420-459 142 113 91 70 47 0.02 0.03 0.04 0.06 0.13 1220-1259 376 251 180 0.02 0.04 0.08 460-499 168 135 108 83 56 0.02 0.03 0.04 0.06 0.11 1260-1299 401 267 192 136 0.02 0.04 0.07 0.13 500-639 159 126 97 66 0.02 0.03 0.05 0.10 1300-1339 426 284 204 144 0.02 0.04 0.07 0.13 540-579 185 147 113 77 0.02 0.03 0.04 0.08 1340-1379. 452 301 217 154 109 0.02 0.04 0.06 0.12 0.22 580-619 212 169 130 88 51 0.02 0.03 0.04 0.08 0.18 1380-1419 479 319 230 163 116 0.02 0.04 0.06 0.12 0.21 620-659 192 147 100 59 0.02 0.03 0.07 0.15 1420-1459 508 0.02 338 0.03 244 0.06 172 0.11 122 0.20 660-699 217 166 113 75 0.02 0.03 0.06 0.13 1460-1500 536 356 256 182 129 0.02 0.03 0.06 0.10 Q_lj AB A' B' * If register selected based on distance from register to opposite wall is unsatisfactory on account of size or pressure loss, it is permissible to shift one or more spaces left or right in the tables to obtain a more suitable register. U quirements fall in blank space, select two registers in place of one and divide CFM capacity between the two registers. b Total pressure (static plus velocity) loss is based on FLAT FACE ADJUSTABLE. BAR TYPE and does NOT include stackhead. - Values on the right of line A and A' should not be used in applications such as churches, auditoriums, and cos' cert halls. d Values on right of line B and B' should not be used in applications such as residential work, motion picture thea ters, court rooms and schools. CFM X lM For floor and baseboard registers where a velocity of approximately 300 FPM is used, the free area --------- ggjj approximately. CFM Assume a pressure loss of 0.01. Warm Air Heating Systems 509 Table 13. Determination of Free Area and Total Pressure Loss of Register for No Deflection of Am"'b'c'd'' Register Free Air in Square Inches (Upper value in each group) Pressure Loss in Inches of Water Column (Lower value in each group) CFM Distance prom Register to Opposite Wall 19-21 (22-24(25-27 28-30|31-34| 35-39 1 40-49 1 50-59 160-69 Jt : 190,-209 62 47 37 30 24 18 0.02 0.03 0.04 0.06 0.09 0.15 CFM 660-699 Distance from Register TO Opposite Wall 35-39|40-49|60-59|60-69 70-79 80-89 /i' B ' 210 143 95 69 49 0.02 0.03 0.07 0.12 0.22 210-229 76 58 45 36 29 22 0.02 0.02 0.04 0.05 0.08 0.12 700-739 236 160 107 77 54 0.02 0.03 0.06 0.11 0.21 230-249 69 53 43 34 26 0.02 0.03 0.04 0.07 0.11 \ 740-779 262 179 119 86 61 0.02 0.03 0.06 0.10 0.18 250-269 81 63 50 40 31 21 0.02 0.03 0.04 0.06 0.09 0.18 780-819 291 198 132 95 67 0.02 0.03 0.05 0.09 0.17 270-299 93 73 59 47 36 24 0.02 0.02 0.03 0.05 0.08 0.16 820-859 320 218 145 105 74 0.02 0.03 0.05 0.08 0.15 300-339 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 0.08 0.14 340-379 120 97 77 59 40 0.02 0.02 0.03 0.05 0.10 900-939 385 262 175 126 89 0.01 0.02 0.04 0.07 0.13 380-419 119 95 73 50 0.02 0.03 0.04 0.08 940-979 419 285 190 137 97 0.01 0.02 0.04 0.07 0.13 420-459 149 114 88 60 0.02 0.03 0.04 0.07 980-1019 455 309 206 0.01 0.02 0.04 148 105 0.05 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 0.10 640-579 186 143 97 0.02 .0.02 0.05 65 47 0.09 0.17 1100-1139 571 388 258 186 132 93 0.01 0.02 0.03 0.05 0.09 0.17 680-619 213 164 0.02 0.02 111 74 64 0.04 0.08 0.15 1140-1179 416 277 199 141 100 0.02 0.03 0.05 0.08 0.16 620-659 180 127 85 61 0.02 0.04 0.07 0.14 AB sjf_ Jf register selected based on distance from register to opponpnr.;:S uPsat,sfactory on account of size or pressure loss, it is tn nk*f;Irle 40 8^t.one or more spaces left or right in the tables -*ft5-P^ore smtable register. If requirements fall in blank itv ^ssiaters in place of one and divide CFM capac- y ""wen the two registers. PACEAnTI^rK>?^lt!S Plus velocity) loss is based on FLAT stockhesd S?ABLE BAR TYPE and doea NOT include 1180-1219 1220-1259 1260-1299 1300-1339 plicahnnl^,?^l^^e *1*kt of line A and A' should not be used in apd uch as churches, auditoriums, and concert halls. plicationa^iiiS,"^* ? B and B' should not be used in apcourt rooms and^chools611^ WOr^' mo**on P*ctoire theaters, For floor and baseboard registers where a velocity of ap proximately 300 FPM is used, the free area proximately .2 I Jj Assume a pressure loss of .01. "y TO*ome under 190 CFM use Table 12. 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 0.14 507 338 243 172 122 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 0.12 403 290 206 146 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'