H1
V1
Note: 1 ft. of vertical drop decreases horizontal length by 2 ft.
V2
MAXIMUM
VERTICAL
DROP
H2
NOTE: Maximum total vent run= Total vertical vent run + Total horizontal vent run
DIRECT VENT WITH 2 FT. MINIMUM VERTICAL (V1) OFF TOP OF APPLIANCE
MAX. ELBOWS | MAX. TOTAL VENT RUN (FT.) |
| MAX. VERT. DROP (FT.) | |
(45° & 90°) | Total V + Total H |
| V2 | |
3 | 24 ft. |
| 7 ft. | |
4 | 17 ft. |
| 7 ft. | |
|
|
|
|
|
DIRECT VENT WITH 3 FT. MINIMUM VERTICAL (V1)OFF TOP OF APPLIANCE |
| |||
MAX. ELBOWS | MAX. TOTAL VENT RUN (FT.) | MAX. VERT. DROP (FT.) |
| |
(45° & 90°) | Total V + Total H |
| V2 |
|
3 | 29 ft. |
| 7 ft. |
|
4 | 22 ft. |
| 7 ft. |
|
|
| |||
DIRECT VENT WITH 4 FT. MINIMUM VERTICAL (V1) OFF TOP OF APPLIANCE | ||||
MAX. ELBOWS | MAX. TOTAL VENT RUN (FT.) |
| MAX. VERT. DROP (FT.) | |
(45° & 90°) | Total V + Total H |
| V2 | |
3 | 34 ft. |
| 7 ft. | |
4 | 26 ft. |
| 7 ft. |
Figure 7.49
Heat & Glo • RED60 • | 47 |