RBI Spectrum series Installation And Operation Instructions Manual page 10

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