RBI SPECTRUM Series - Page 10

Finned copper tube gas boilers & water heaters – Boiler Manual
10
Table 7 Temperature Rise Table – 2 Pass Headers
Table 8 Temperature Rise Table – 4 Pass Headers
∆T = 10°F ∆T = 5.5°C ∆T = 20°F ∆T = 11.1°C ∆T = 30°F ∆T = 16.7°C
Model
Number
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
GPM Ft L/s kPa GPM Ft L/s kPa GPM Ft L/s kPa
100 16.4 0.34 1.0 1.0 — — — — — — — —
150 24.6 0.94 1.6 2.8 — — — — — — — —
200 32.4 1.92 2.0 5.7 16.2 0.53 1.0 1.6 — — — —
250 40.5 3.46 2.6 10.2 20.3 0.96 1.3 2.8 — — — —
300 49.8* 5.89 3.1 17.3 24.9 1.63 1.6 4.8 16.6 0.80 1.0 2.3
350
See Note
29.1 2.47 1.8 7.3 19.4 1.20 1.2 3.4
400 33.2 3.54 2.1 10.4 22.1 1.70 1.4 4.9
Note: Unit equipped with 2-pass headers, see Table 7.
*Flow exceeds recommended maximum use a greater temperature rise or consult manufacturer. Cupro-nickel heat exchanger
should be considered.
∆T = 10°F ∆T = 5.5°C ∆T = 20°F ∆T = 11.1°C ∆T = 30°F ∆T = 16.7°C
Model
Number
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
Flow
Rate
Pres.
Drop
GPM Ft L/s kPa GPM Ft L/s kPa GPM Ft L/s kPa
100 16.4 0.05 1.0 0.1 — — — — — — — —
150 24.6 0.13 1.6 0.4 — — — — — — — —
200 32.4 0.27 2.0 0.8 16.2 0.07 1.0 0.2 — — — —
250 40.5 0.48 2.6 1.4 20.3 0.13 1.3 0.4 — — — —
300 49.8 0.82 3.1 2.4 24.9 0.23 1.6 0.7 16.6 0.10 1.0 0.3
350 58.1 1.23 3.7 3.6 29.1 0.34 1.8 1.0 19.4 0.20 1.2 0.5
400 66.4 1.77 4.2 5.2 33.2 0.49 2.1 1.4 22.1 0.20 1.4 0.7
Note: Unit equipped with 4-pass headers, see Table 8.