Bosch 830 ES - Page 31

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