Bosch 830 ES Installation And Operating Instructions Manual page 31

Altitude (above Total equivalent
sea level) vent length
0 - 2000 ft 3.5 - 32 ft
(0 - 610 m)
33 - 57 ft
2000 - 4500 ft 3.5 - 32 ft
(610 - 1372 m)
33 - 57 ft
4500 - 8000 ft 3.5 - 32 ft
(1372 - 2439
33 - 57 ft
m)
* Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.4 for instructions.
1) Full equivalent length (inlet + outlet piping + fittings)
Table 23 Fan speed adjustment for 3" piping
Altitude (above Total equivalent
sea level) vent length
0 - 2000 ft 2.25 - 59 ft
(0 - 610 m)
60 - 122.5 ft
2000 - 4500 ft 2.25 - 59 ft
(610 - 1372 m)
60 - 122.5 ft
4500 - 8000 ft 2.25 - 59 ft
(1372 - 2439 m)
60 - 122.5 ft
* Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.4 for instructions.
1) Full equivalent length (inlet + outlet piping + fittings)
Table 24 Fan speed adjustment for 4" piping
830 ES – 6 720 644 936 (2021/08)
Natural Gas
Minimum Maximum power
1)
power fan fan speed (P1)
speed (P2)
7 No
modification
8
required
8* 48*
8* 48*
9* 49*
9* 49*
Natural Gas
Minimum Maximum power
1)
power fan fan speed (P1)
speed (P2)
7 No
modification
8
required
8* 48*
8* 48*
9* 49*
9* 49*
Liquid propane
Maximum power
fan speed (P1)
No For operation at elevations above
modification 2,000 ft (610 m) the equipment
required ratings shall be reduced at the rate
of 4% for each 1,000 ft (305 m)
40*
above sea level
41*
41*
41*
Liquid propane
Maximum power
fan speed (P1)
No For operation at elevations above
modification 2,000 ft (610 m) the equipment
required ratings shall be reduced at the rate
of 4% for each 1,000 ft (305 m)
40*
above sea level
41*
41*
41*
Installation instructions
31