Document 15Y71kDQzXMVy6z7ZLgp48rNa

490 CHAPTER 19 1957 Guide- Table 8. Capacity and Sizing Table--First Story For Warm Air and Return Air Stack, Branch, and Registers Equiv. Length or Fittings and Registers Horizontal Length Furnace to Register - Insulated Ducts* Attic Ducts First Story Room Heat Loss--btuh CoL a Col. b Col. c Col. d Col. e Col. f Col. g Coi. h Col. i CoL j Up to 70 Eq. Ft. 71 to 100 Eq. Ft. 101 to 130 * Eq. Ft. 131 to 165 Eq. Ft. 166 to 200 Eq. Ft. Up to 7 8-12 13-17 18-25 Up to 5 6-0 10-13 14-18 26-35 36-45 46-55 Up to 7 8-12 13-17 .18-25 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 26-35 36-45 46-65 Up to 7 8-12 13-17 18-25 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14--18 26-35 36-45 46-65 Up to 7 8-12 13-17 18-25 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 26-35 36-45 46-55 Up to 7 8-12 13-17 18-25. 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 26-35 36-45 46-65 19-25 26-35 36-45 46-65 7,200 6,700 6,100 5,600 4,800 4,100 3,500 3,000 . 5,500 5,100 4,800 4,500 3,900 3,400 3.000 2,600 4,600 4,300 4,100 3,800 3,300 3,000 2,700 2,300 4,100 3,800 3,600 3,400 2,900 .2,600 2,300 2,000 3,800 3,500 3,300 3,100 2,700 2,400 2,100 1,700 12,500 11,700 - 10,800 9,900 16,000 15,000 14,000 13,000 8,500 7.400 6,400 5,500 9,900 9,200 8,600 8,100 11,000 9,900 8,700 7,700 13,100 12,300 11,600 ' 10,900 7,100 6.200 5,400 4,600 8,500 7,900 7,400 6,900 9,700 8,500 7,500 6,500 11,300 10,600 10,000 9,400 6,100 5,300 4,700 4,000 7,300 6,900 6,400 6,000 8,400 7,400 6,500 6,400 9,800 9,100 8.600 8.100 5,300 .4,700 4,200 3,600 6,500 6,100 5,700 5,400 7,200 6,400 5,600 4,700 8,800 8,200 7,700 7,200 4,800 4,300 3,800 3,000 6.400 5,700 5,000 3,900 19,100 18,000 17,000 16,000 14,200 . 12,500 11,000 9,600 16,300 15,400 14.500 13,700 12,200 10,800 9,500 8,300 14,300 13,500 12,700 11,900 10,500 9,300 8,300 7,000 12,300 11,700 11,000 10,300 9,100 8,100 7,100 6,000 11,000 10,500 9,900 9,300 8,300 7,300 6,400 5.100 25,000 23,400 21,600 19,800 17,000 14,800 12,800 11,000 19,800 18,400 17,200 16,200 14,200 12,400 10,800 9,200 17,000 15,800 14,800 13,800 12,200 10,600 9,400 8,000 14,600 13,800 12,800 12,000 10,600 9,600 8.400 7,200 13,000 12,200 11,400 10,800 9,600 8,600 7,600 6,000 32,000 30,000 28,000 26,000 22,600 19,800 17,400 15,400 26,200 24,600 .23,200 21,800 19,400 17,000 15,000 13,000 22,600 21,200 20,000 18,800 16,800 14,800 13,000 10,800 19,600 18,200 17,200 16,200 14,400 12,800 11,200 9,400 17,600 16,400 15,400 14,400 12,800 11,400 10,000 7,800 80.000 75,000 70.0&IK 65.000 56,500 49,500 43,500 38,500 65,500 61,500 58,000 54,500 48,500 42,500 37,500 33,500 56,200 52,600 50,200 47,300 42,000 37,000 32,400 27,000 49,200 45,800 41,900 40,300 36,000 31,800 28.100 23,500 44,100 51.500 38,800 36,000 32,000 28,200 24,700 19.500 Combination Number Stacks^ No. Eire Rectangular Branch Size Round Branch Size (Diam) Number of Joist Spaces and Minimum Depth-Return Air 41 1 10x3% 3x8 5 1 at 3 42 j 10x3% 4x8 6 1 at 3 43 1 12x3% 5x8 7 1 at 4 44 1 14x3% 6x8 8 1 at 5 45 2 10x3% 8x8 9 1 at 6 or 2 at 3 46 2 12x3% 10x8 10 1 at 7 or 2 at 4 47 -- _ 15x8 12 1 at 9 or 3 at 5 Registers: Low Wall, High Wall Registers: Floor-Warm Air 10x6 8x10 10x6 8x10 12x6 9x12 14x6 9x12 (2)10x6 or (1)24x6 10x12 (2)12x6 or (1)30x6 12x14 -- ____ -- Registers: Floor-Return Air Trunk Duct Increase. Inches 6x10 or 4x14 1 6x10 or 4x14 2 6x12 or 6x14 3 longer 6x14 4 6x30 5 _ 6x30 8x30 ___ - 7 12 ________ * Uninsulated ducta in heated spaces and insulated ducte in unheated spaces. b Note: For return air a 14x3% in. stud space may be used instead of 10x3% in: stack. Where 12x3% Pj* or 14x3% in. stack is required, a 14x3% in. stud space may be used only when inside of stud space is smQO* and without protruding plaster keys. The number of joist spaces for combination 47 is based on 2x8 in. joists One space may be used with 2x10 in. joists. The limiting factor for a duct combination is the stack capacity. Warm Air Heating Systems 491 Table 9. Capacity and Sizing Table--Second Story For Warm Air and Return Air Stack, Branch, and Registers Equiv. Length or Fittings and Registers Horizontal Length Furnace to Register Insulated Ducts* Attic Ducts Second Story Room Heat Loss--stub Col. a Col. b Col. c. Col. d Col. e Col. f Col. g Col. h Col. i CoL j Up to 70 Eq. Ft. 71 to 100 Eq. Ft. 101 to 130 Eq. Ft. 131 to 165 Eq. Ft. 166 to 200 Eq. Ft. Up to 7 8-12 13-17 18-25 26-35 36-45 46-55 Up to 7 8-12 13-17 18-25 26-35 36-45 46-55 Up to 7 8-12 13-17 18-25 26-35 36-45 46-55 Up to 7 8-12 13-17 18-25 26-35 36-45 46-55 Up to 7 8-12 13-17 18-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 10-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 19-25 26-35 36-45 46-55 Up to 5 6-9 10-13 14-18 19-25 26-35 36-45 46-55 6,300 5,700 5,200 4.800 4.100 3,500 3.100 2.800 5.000 4,600 4.300 4.000 3,400 3.000 2,700 2.300 4,200 3,900 3,700 3,500 3.000 2,600 2,400 . 2.000 3.800 3,500 3,200 3,000 2,700 2,300 1,960 1.800 3.500 3,200 2.900 2,700 2.500 2,100 1.900 1.500 10,900 10,000 9,200 8,500 7,300 6,400 5,600 5,000 9,000 8,200 7,600 7,100 6,200 5,400 4,700 4,200 7.700 7.200 6.700 6.200 5,400 4.700 4,100 3,600 6,800 6.300 6,800 5,500 4,800 4,200 3,400 3.300 6,100 6,700 5,300 5,000 4.400 3,900 . 3.400 2,800 14.000 13,000' 12,100 11,400 17.000 15.900 14.900 13,900 10.000 8,800 7.800 6.800 11,900 11,000 10,300 9,600 12,400 11,100 9,900 9.000 14.800 13,900 13,000 12,200 8,400 7,500 6.700 6,000 10,400 9,700 9,000 8.400 10.800 9,600 8.500 7.500 13,000 12,100 11,300 10,600 7.400 6,500 5.800 4.800 6,100 8.400 ` 7,900 7.400 9.400 8,300 7.400 6,500 11,400 10,500 9.800 . 9,200 6.300 5,700 4,500 4.300 8,200 7,600 7.100 6,700 8,100 7.200 5.800 5,400 10,300 9.500 8,900 8,300 5,700 6.100 4.500 3.500 7,400 6.500 5,800 4,700 21,800 20,000 18,400 17.000 14.600 12,800 11,200 10.000 18,000 16.400 15.200 14.200 12.400 10,800 9.400 8.400 15.400 14.400 13.400 12.400 10,800 9,400 8,200 7.200 .13,600 12,600 11,600 .11,000 9.600 * 8,400 6,800 6.600 12,200 11,400 10,600 10,000 8.800 7.800 6.800 5.600 28,000 26.000 24,200 22,400 20,000 17.600 15.600 13.600 23,900 22,000 20,600 19,200 16,800 15.000 13,400 12.000 21,700 19,400 . 18,000 16,800 14,800 13,000 11,600 9,600 18,200 16,800 16,800 14,800 12,600 11,400 9,000 8,600 16.400 15.200 14.200 13.400 11.400 10.200 9.000 7.000 70.000 65.000 60,500 57.000 50.000 44.000 39.000 34.000 59.500 55.000 51.500 48.000 42.000 37.500 33.500 30.000 52,200 48,400 45.300 42.300 37.000 32,500 29.000 24.000 45.500 42,000 39,600 36.800 32.200 28.200 22.800 21.500 41.000 38,300 35.800 33,400 29.000 25.800 22.800 17,500 Combination Number Stacks^ No. _____ Size Ewtanmlar Branch Sixe "and Branch Size (Diam) w? ol Joist Spaces and siimmum Depth-Return Air Floor, Warm Air Floor, Return Air T`unk Duct increase, Inchea 41 .1 10x3% 3x8 5 1 at 3 10x6 42 1 10x3% 4x8 6 1 at 3 10x6 8x10 8x10 0x10 or 4x14 1 6x10 or 4x14 2 43 :1 12x3% 5x8 7 1 at 4 12x6 9x12 6x12 or 6x14 3 44 45 1 14x3% 2 10x3% 6x8 8x8 89 1 at 1 at 6 5 or 2 at 3 14x6 . (2)10x6 or (1)24x6 9x12 or longer 10x12 6x14 6x30 48 2 12x3% 10x8 10 1 at 7 or 2 at 4 (2)12x6 or (1)30x6 12x14 6x30 47' __ 15x8 12 1 at 9 or 2 at 6 " 8x30 4 5 7 12 -------------- ) .inu heated spaces and insulated ducts in .u. n...h..e...a..trewd. spaces. or Hxgul2 ^.r rturn air a 14x3% in. stud space may be used instead of 10x3% in. stack. Where 12x3% in. and withln* 8*ac* is rQuired, a 14x3% in. stud space may be used only when inside of stud space is smooth One protruding plaster keya. The number of joist spaces for combination 47 is based on 2x8 joists. "V? be used with 2xK) joists. Siting factor for a duct combination is the stack capacity.