North American Tempest® High Velocity Gas Burner Performance Data
— Combustion Air: .8-104 mbar (0.3-41.6"w.c.) air pressure, max 177°C (350°F) .
— Control: Excellent performance with all control systems; StepFire™, on-ratio and thermal turndown. A limiting orifice valve must be installed in gas supply line within 300 mm (1 ft.) of burner. A ratio regulator should be within 1.2 M (4 ft.) of burner.
— Fuel: Natural gas with propane gas versions available in the -1 thru -4-B sizes. Gas pressure varies per size with 47 mabr (19"w.c.) is maximum required at design capacity, for 69 mbar (27.7"w.c.) combustion air pressure, stoich ratio. — Flame Supervision: Flame rod or UV detector Consult National Safety Standards and insurance underwriters for specific flame supervision requirements. Flame supervisory components must be ordered separately. See the parts list table for correct flame rod part number. — Ignition: Direct spark (no pilot) with 6000 V transformer. A halfwave transformer prevents UV sensing of the spark during trial for ignition. Lighting not recommended above 69 mbar (27.7"w.c.) main air pressure. Excess air required for ignition.
— Relight: Tempest® burners require spark for re-ignition. They will not relight from a hot tile or furnace.
— Piping: For cross-connected systems, maximum gas pressure at the burner can be adversely impacted by excessive pressure drop inthe gas line between the ratio regulator and the burner. The design, selection, and installation of these systems must take into account the gas pressure required at the burner to achieve the desired heat release (i.e. gas flow). For more detailed information on cross-connected control systems, see Sheet 7218-2 Instructions, Bulletin 7216 and Practical Pointer Book. — Capacities of the burners have not changed. Imperial units of static pressure are now given in inches of water column.
4441 NATURAL GAS PERFORMANCE DATA
(Performance for 69 mbar main air pressure operating at stoichiometric ratio unless stated otherwise)
Burner Size
-1
-2
-3
-4-A
-4-B
-5
-6
-7
-8-A 962 829 33.8
-8-B 1337 1123 29.1 11.3 33.2 40.9
-8-C 1684 1443 20.3 17.9 33.6 43.5 3000
Air Flow, not burning (Nm3/h)
43 33
72 59
107 88
163 140
219 184
294 254 37.9
508 401 17.9 6.4 38.8 42.7
695 588 17.4 9.3 30.2 33.2
Air Flow, (Nm3/h)xx
Air Orifice , UA-DA, (mbar) Gas Orifice , UG-DG (mbar)
32.3 40.6
42.6 20.8 42.7 58.2
40.2 19.3 37.9 51.3
40.4 20.8 39.2 54.7
9.5
16.4
7.1
6.1
Gas Pressure UG (mbar)
44.8 40.9
31.0 34.5
25.0 32.3
Gas Pressure UG (mbar), 30% XSF
51.7
60.3
Max. % XSA, (ignition and flame signal limit) 2000 3000
4000 6000
6000
6000 6000 6000
3000 3000
Max. % XSF, (ignition and flame signal limit) 30
30
30
30
30
30 711 152
30
30
30
30
30
254
254
305
508
660
914 178
1143 203
1270 305
1524 356
1727 356
Flame Length (mm)x Flame Diameter (mm)
25
51
51
76
102
4441 PROPANE GAS PERFORMANCE DATA (Performance for 69 mbar main air pressure operating at stoichiometric ratio unless stated otherwise) Burner Size -1 -2 -3 -4-A -4-B Air Flow, not burning (Nm3/h)xxxxxxxxxxxx 45 72 103 166 230 Air Flow, (Nm3/h)xxxxxxxxxxxxxxxxxxxxxxx 36 59 92 143 203 Air Orifice , UA-DA, (mbar)xxxxxxxxxxxxx 32.3 37.5 45.8 40.4 38.9 Gas Orifice , UG-DG (mbar)xxxxxxxxxxxx 4.7 7.8 20.3 7.8 11.0 Gas Pressure UG (mbar)xxxxxxxxxxxxxxxxx 39.6 35.8 39.6 28.4 30.2 Gas Pressure UG (mbar), 30% XSFxxxxxxxx 41.4 37.5 60.3 33.6 37.5 Max. % XSA, (igniton and flame signal limit) 2000 3000 4000 6000 6000 Max. % XSF, (ignition and flame signal limit) 30 30 30 30 30 Flame Length (mm)xxxxxxxxxxxxxxxxxxxxx 203 381 305 610 610 Flame Diameter (mm)xxxxxxxxxxxxxxxxxxx 25 25 51 102 152
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