Document RjJ40vkN8z03JamzKNRvY2ZLB

344 Chapter 18 I' 1945 Guide Table 3. Second Story Warm-Air Ducts--Single Wall Stacks and Fittings- Unit No. Leader Pipe Diameter, In. Stack1* Size-.' In. Floor ii 8 12 9 10 x 3M 12 x 3M 8x 10 8x 12 13 9 13 x 314 8x 14 14 10 15 12 14x3M 12 x 5*4 8..x...1..4. 16 .12 - 14 x bX -- Register Size, In*. Baseboard Size Extension 10 x 8 " 12 x 8 12 x 8 12 x 8 12 x 10 13 x 11 2*. 2X VA VA m. 3H Sidewall 10x8 12 x 8 12x8 12x8 ............. . ^Recommended stack sizes. Tables may also be applied to 3 in. and 3H in- stack depths. Table 4. Second Story Warm-Air Ducts--Double Wall Stacks and Fittings Unit No. Leader Pipe Diameter, In. Stack Size, In. Internal External Floor Register Size, In. Baseboard Size Extension Sidewall 21 8 22 8 23 9 24 9 2y2c x lb 3 x 10 2W x 12 3 x 12 3 x 10% 3% x 105^ 3 x 12% 3% xl2% 8x 10 8x 10 8x 12 8x 12 10x8 10 x 8 12x8 12 x 8 VA VA Vi 2K t 10x8 10x8 12x8 12x8 eCommercial sizes vary H in- from values shown. Table 5. Return Air Ducts UNIT No. Duct Dia. In.- Area at Shoe Con nection, Sq In. Metal Grille Sizes Choose One ABc When Joist Lining is Used* When Duct is , Used No. of Minimum* Joists Depth, Lined In. Choose One 31 10 1 8x14 10x12 i 7 14 x 6 12 x 8 32 12 6x30 8x24 12x14 i 9 22 x 6 16 x 8 33 14 170 8x30 10x24 14x16 i 12 28 x 6 22x 8 34 16 220 10x30 12x24 2 8 28 x 8 22x10 35 18 280 12x30 14x24 2 10 36 x 8 28x10 36 20 340 14x30 18x24 2 12.5 36x10 30x12 37 22 420 18x30 2 15.0 42x10 36x12 3 10.0 42x10 36x12 . 38 24 500 20x30 2 . 18.0 42x12 36x14 3 12.0 42x12 36 x 14 * Based on 14 in. space between joists. Use full depth of joist except when joist depth is less than minimum depth required, when pan mast be used. -. T a b l e 0. W ar m A ir .Ca r r y in g Ca p a c it y , B t u D e l iv e r e d , F ir st Story R egisters1'*1'0 _________________ ____________ Length o f Leader P ip e -- i n Feet Gravity Warm Air Furnace Systems 345 >H b. ooooo 05 ooooo 00 05 pH co *** r- pHINtOOlH OOOOO WOOWiO OphON ooooo OhNhh 00 O CO ooooo 05 x* t- 0-00 CO r#<C5 rji 05 xtf 00 p-h CO ^ CO pH co-^ooo pH ooooo ooooo ooooo OOOOO ooooo & 00 --* -xf O CO 00 OOlOOO H'hhioo PH * Ot- TjtcOOOO OMCcO i-h co co 05 O pH CO O- cs C5 pH CO co el ^'lONC5 CO 'tiOCOON ** 05 H?' 00 1-H CO-Tf 00 pH pH pH H b. ooooo COONWO ooo5co OOOOO iONOOJh ooooo *000*0CO CO *0 00 COO 'OOOOO o pH CO 05 05 .ooooo coco O PH CO 00 C4 ^1-oco i-H pH Tjiior-Oico ^oow ^05 X* 00-H ooooo OOOOO- ooooo OOOOO ooooo r- i-h 05 o PH -^ O CO O CO CO 05 05 CO oo ph r- o 05 CO UJNOOH cor^ C5eOCOC5 ^"cor-"o-* x* r-OCO r-pco ^ 05 x*c505 a-. ooooo 05 ph 00 COOOO lOCONH^ pH pH ooooo pH CO O0 pH CO O ^oso^ 1-H PH ooooo N005U50 05 CO CONOCO ooooo 005 0-0 .O pH ^tco ooooo oo.x* C900 W* C5 . ooooo r- x* r>. ooooo ONOcOlO ooooo CO pH coo lO OOOOO pH Tjl ooooo cot- HIOO^O OCO 000*0 OOl-HiOt-O 00 05 CO- o o 00 ph pH pH 5CONH^l pH pH ^CONO^ , ^NOTO pH pH -xj< t-- CO L, . b. ooooo xt* CO COT-CO 00 to CO CO H o ooooo 05C0rH hiOO^O 10(0 00 i-H ooooo pH 00*0 pH co r-- H}i fp. pH pH pH OOOOO o co o 00 ^CONOW pH pH ooooo tJ0005 00 05 CO CONOCO H pH . fa ooooo HNQHTf 050 ooooo cocoo50 COh* CO 00*0 ooooo UJHCOON IHUJO-^O OOOOO r- ^ 05 05 0-Hj3 ooooo C5 No^coa 00 05 iO00HO pH pH *C CO 00 i-H h* pH pH Tt< r- x* CONOCO pH pH faH ooooo 00 00t-00 pH 00 ooooo C5 Tji oO tH 05 -xj< ph ooooo pHpHOOlOVi cor- <n i> ^ ooooo pH CO CO 00 pH xf 05 CO O0 OOOOO Ht*0500 05 Is- CO oo r-00 05 00 05 00 pH r- pH pH i-H pH pH Wr-x* pH pH ooooo ooooo ooooo ooooo OOOOO CO^IHOO CO ^ Hj* CO I-H CO lO ^ pH CO O O or-05 lO PH C5 ' 05 05 CO ^ o O nf 05 00 O t>. 05 r*- r- oo 05 00 05 *d oo ph io tOONH^ faH ooooo 05 0505 O x*< CO ooooo CO 05 -H 00C0O05C5 o o oo o 05 05 CO pHt--H*CO ooooo 05 PH tip Tt< co ** r- ooooo CO 00 PH 05PH05 V CONOWN id t> C5 csi co 0-00 05 *d05 ooph ^H I-H pH pH No. of E lbows --I 05 CO o H HNW^lO I-HM CO D I-H 05 CO pH 05 CO W* ph 05 CO -xtf* HUU I