Document Z4LEx7QJB3jm8YO7qqrv2qQ7d

nn if-' in 'i / I72 CHAPTER 5 1962 Guide And Data Book v/cnn Air Heating Systems GROUP 1. WARM AIR ANO RETURN AIR BONNET OR PLENUM. r.ROUP 4. BOOT FITTINGS - FROM BRANCH TO STACK. (THESE VALUES MAY ALSO BE USED FOR FLOOR OlFFUSER BOXES) VJ^ 71 73 ill i ii F NOT RECOMMENDED RETURN AIR ONLY H ANO I NOT RECOMMENDED GRQU^S^. ANCLES ANO ELBOWS FOR TRUNK DUCTS. INSIDE radius ^ width of DUCT;. ii K 1 fgt ll li I m EXTENDED PLENUM TAKEOFFS EPI AND EP2, SIOE TAKEOFFS EP3 AND EP4 TOP TAKEOFFS Rg. 7.... Equivalent Length of Rftings and Intakes EP4 50 tar* GROUP 5. STACK ANGLES, ELBOWS, ANO COMBINATIONS A ANO 0 HAVE 3" THROAT RAOIUS O AND E HAVE 5" THROAT RAOtUS 5 tt n 10 ^3 joft s "'* lO'WIDT?- 10 i2* - is 14- - IS ICf WIDTH.40 ir -ss (4* - GROUP 6 RETURN AIR io x .3E - eo 12 * 314 . 73 14 X 3 ^ 73 <a.(t 10 x 3 W - 75 12 X 3 E - 90 14 X 3 4 - 90 FLOOR GRILL TO LINER Fig. 7----- Equivalent Length of Rttings and Intakes (Conceded)