Maximum Gas Flow Capacity; Supply And Return Duct Openings; Vertical Duct Cover Removed; Lance Location For Vertical Duct Opening Cover - Bryant 588A Installation, Start-Up And Service Instructions Manual

NOMINAL
INTERNAL
IRON PIPE,
DIAMETER
SIZE
(in.)
(in.)
1 ⁄ .622
2
3 ⁄ .824
4
1 1.049
1 ⁄ 1.380
1
4
1 ⁄ 1.610
1
2
*Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5-in. wg (based on
a 0.60 specific gravity gas). Refer to Table C-4, National Fire Protection Association NFPA 54.
†This length includes an ordinary number of fittings.
SUPPLY DUCT OPENING RETURN DUCT OPENING
Fig. 16 — Supply and Return Duct Openings
Fig. 17 — Lance Location for Vertical Duct
Opening Cover
Table 3 — Maximum Gas Flow Capacity*
10 20 30 40
175 120 97 82
360 250 200 170
680 465 375 320
1400 950 770 600
2100 1460 1180 990
LENGTH OF PIPE, FT†
50 60 70 80
73 66 61 57
151 138 125 118
285 260 240 220
580 530 490 460
900 810 750 690
Fig. 18 — Vertical Duct Cover Removed
Fig. 19 — Removal of Vertical Discharge
—17—
90 100 125 150
53 50 44 40
110 103 93 84
205 195 175 160
430 400 360 325
650 620 550 500
Opening Cover
175 200
— —
77 72
145 135
300 280
460 430