Model number
Tube
diameter
BTU/Hr
Combustion tube
length (ft)
Radiant tube
length (ft)
Min distance to
bend (ft)
40S20
3
45,720
10’ (1-CC)
10’ (1-MS)
10’
60S20
3
60,000
40S25
3 45,720
10’ (1-CC)
10’ (1-MS)
10’ (2#5’-MS)
10’
60S25
3 60,000
80S25
3 80,000
20’
40S30
3
45,720
10’ (1-CC)
10’
60S30
3
60,000
80S30
3
80,000
20’
100S30
4
100,000
10’ (1-AS)
20’ (2#10’-MS)
20’
60S40
3 60,000
10’ (1-CC)
30’ (3#10’-MS)
10’
80S40
3 80,000
100S40
4 100,000
10’ (1-AS)
30’ (3#10’-MS)
20’
125S40
4 125,000
150S40
4 150,000
100S50
4
100,000
10’ (1-AS)
40’ (4#10’-MS)
20’
125S50
4
125,000
150S50
4
150,000
170S50
4
175,000
20’ (2#10’-AS)
30’ (3#10’-MS)
30’
200S50
4
200,000
125S60
4 125,000
10’ (1-AS)
50’ (5#10’-MS)
20’
150S60
4 150,000
170S60
4 175,000
20’ (2#10’-AS)
40’ (4#10’-MS)
30’
200S60
4 200,000
170S70
4
175,000
20’ (2#10’-AS)
50’ (5#10’-MS)
30’
200S70
4
200,000
200S80
4
200,000
20’ (2#10’-AS)
60’ (6#10’-MS)
30’
20’ (2#10’-MS)
20’
Table 7b: Linear Heater Tube Materials
Tube nomenclature:
CC 4”-3” Combustion tube
AS
Aluminum coated steel tube
MS Mild steel tube
17