Bosch C 950 - Page 34

Installation instructions
C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)
34
C 950ES (Pro TL 175 C) Fan Speed Adjustment
Table 31 C 950ES (Pro TL 175 C) Fan speed adjustment for 2" piping
Table 32 C 950ES (Pro TL 175 C) Fan speed adjustment for 3" piping
Natural Gas Liquid
propane
Natural Gas Liquid
propane
Altitude (above
sea level)
Vent
terminal
Total
equivalent vent
length
1)
1) Full equivalent length (inlet + outlet piping + fittings)
Minimum
power fan
speed (P2)
Minimum
power fan
speed (P2)
Maximum
power fan
speed (P1)
Maximum
power fan
speed (P1)
0 - 2000 ft
(0 - 610 m)
Twin
system
3.5 - 11 ft 12
3)
17
3)
48
3)
48
3)
12 - 19 ft 12
3)
17
3)
48
3)
48
3)
2000 - 4500 ft
2)
(610 - 1372 m)
2) When installing in altitude, the unit may not reach the rated Input
Twin
system
3.5 - 11 ft 13
3)
17
3)
48
3)
48
3)
12 - 19 ft 13
3)
3) When adjusting the unit, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.5 for instructions.
17
3)
49
3)
49
3)
Natural Gas Liquid
propane
Natural Gas Liquid
propane
Altitude (above
sea level)
Vent
terminal
Total
equivalent vent
length
1)
1) Full equivalent length (inlet + outlet piping + fittings)
Minimum
power fan
speed (P2)
Minimum
power fan
speed (P2)
Maximum
power fan
speed (P1)
Maximum
power fan
speed
0 - 2000 ft
(0 - 610 m)
Concentric 6 - 25 ft No modification required on installations below 2000 ft Altitude
26 - 46 ft
Twin
system
6 - 37 ft
38 - 62 ft
2000 - 4500 ft
(610 - 1372 m)
Concentric 6 - 25 ft 11* 14* 47* 47* 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
26 - 46 ft 11* 14* 48* 48*
Twin
system
6 - 37 ft 10* 13* 47* 47*
38 - 62 ft 11* 14* 48* 48*
4500 - 8000 ft
(1372 - 2439 m)
Concentric 6 - 25 ft 11* 14* 48* 48*
26 - 46 ft 13* 16* 48* 48*
Twin
system
6 - 37 ft 11* 14* 48* 48*
38 - 62 ft 12* 15* 48* 48*
* Above 2000 ft, CO2 levels must be checked with a combustion gas analyzer, see chapter 7.5 for instructions.