Bosch C 1210 ES Installation Manual page 21

Altitude
Vent
(above sea
terminal
level)
Concentric
0 - 2000 ft
(0 - 610 m)
Twin
system
Concentric
2000 - 4500 ft
(610 - 1372 m)
Twin
system
Concentric
4500 - 8000 ft
(1372 - 2439 m)
Twin
system
Table 18 Fan speed adjustment for 3" piping
1) Full equivalent length (inlet + outlet piping + fittings)
Altitude
Vent
(above sea
terminal
level)
Concentric
0 - 2000 ft
(0 - 610 m)
Twin
system
Concentric
2000 - 4500 ft
(610 - 1372 m)
Twin
system
Concentric
4500 - 8000 ft
(1372 - 2439 m)
Twin
system
* Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see section 6.5 for instructions.
Table 19 Fan speed adjustment for 4" piping
1) Full equivalent length (inlet + outlet piping + fittings)
6 720 644 887
Minimum
Total equivalent
power fan
1)
vent length
speed (P2)
6 - 25 ft
26 - 46 ft
6 - 37 ft
38 - 62 ft
6 - 25 ft
26 - 46 ft
6 - 37 ft
38 - 62 ft
6 - 25 ft
26 - 46 ft
6 - 37 ft
38 - 62 ft
Minimum
Total equivalent
power fan
1)
vent length
speed (P2)
3.5 - 25 ft
26 - 46 ft
3.5 - 59 ft
60 - 126 ft
3.5 - 25 ft
26 - 46 ft
3.5 - 59 ft
60 - 126 ft
3.5 - 25 ft
26 - 46 ft
3.5 - 59 ft
60 - 126 ft
NG LPG
Minimum
power fan
speed (P2)
12 12
12 13
12 12
12 14
12 14
13 14
12 13
13 14
13 14
13 15
13 14
13 15
NG LPG
Minimum
power fan
speed (P2)
12 12
12 13
12 12
14
12
12* 14*
13* 14*
12* 13*
13* 14*
13* 14*
13* 14*
13* 14*
13* 15*
Installation instructions
NG/LPG
Maximum
power fan
speed (P1)
For operation at
elevations above
2,000 ft (610 m)
the equipment
No ratings shall be
modification reduced at the
rate of 4% for
each 1,000 ft
(305 m) above
sea level
NG/LPG
Maximum
power fan
speed (P1)
For operation at
elevations above
2,000 ft (610 m)
No the equipment rat-
modification ings shall be
required reduced at the rate
of 4% for each
1,000 ft (305 m)
above sea level
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