30
6.8 Multiple Boiler Venting Installation
• Multiple boiler application boiler can vent individually
or use common vent pipes.
• If boilers vent individually follow guidelines as
described in
fi
gures 6-1 through 6-7.
• If boilers vent through common vent pipes, as shown
in Figure 6-17, choose common vent pipe per Table 8.
Choose size from Table 9 for pipes between boiler and
common vent pipes.
• Longest individual vent lengths and common vent
length together must be shorter than 100 ft. (30m).
H + L
≤
100 ft (30m) (See
fi
gure 6-17)
• Each boiler must have air
fl
ow check valve to prevent
fl
ue gas back
fl
ow.
• External terminals follow same rule as single boiler
venting as described in Section 6.6 and 6.7
FIGURE 6-17 Mulitple Boilers With Common Venting Pipe
Model
Minimum
Diameter
050
2" (51mm)
075
3" (73mm)
100
3" (73mm)
150
3" (73mm)
200
3" (73mm)
299
3" (73mm)
Table 8 - Minimum Diameter for Individual
Boiler in Common Venting System
Total
Firing
Rate
Minimum
Diameter of
Common vent
pipes if
L< 50 ft (16m)
Minimum
Diameter of
Common vent
pipes if
L>50 ft (16m)
400
4" (101mm)
5" (127mm)
600
5" (127mm)
6" (152mm)
800
1000
6" (152mm)
7" (177mm)
1200
1400
1600
7" (177mm)
8" (203mm)
1800
2000
Table 9 - Common Venting Pipe Diameters
L
H
6 - COMBUSTION AIR AND VENT PIPING
Air Flow
Check Valve
Air Flow
Check Valve
Air Flow
Check Valve
12" (305mm)
Anticipated
Snow Line
Vent
Combustion
Air
Ground Level
Содержание Olsen OLSSC-299
Страница 47: ...47 13 TROUBLE SHOOTING ...
Страница 51: ...51 13 TROUBLE SHOOTING ...
Страница 53: ...53 13 TROUBLE SHOOTING ...
Страница 62: ...62 Supply Water Temperature Sensor Resistance Chart 13 TROUBLE SHOOTING ...
Страница 66: ...66 14 3 Connection Diagram 299 MBH 14 WIRING DIAGRAM EXTERNAL PUMP RELAY LIMIT OF 1 AMP PER PUMP SEE SECTION 8 ...
Страница 84: ...ECR International Inc 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...