Heatrex
425 Hanley Industrail Court, St. Louis, MO 63144
Toll Free: (800) 394-6589 • Phone: (814) 724-1800 • Fax: (314) 644-5332
E-mail: sales@heatrex.com
• Website:
www.heatrex.com
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All Categories > Explosion-Proof Duct Heaters Comparison Chart
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Explosion-Proof Duct Heaters Comparison Chart
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Engineering developments at Heatrex have made electric duct heaters for hazardous locations readily available at affordable prices.
227 Series Explosion Proof Duct Heater:
- CSA Approved for virtually all Class I and Class II, Division 1 and 2 hazardous gas or dusty atmospheres.
- Ignition temperatures as low as 320°F (160°C).
- Six standard sizes to fit a wide range of ducts.
- Ratings up to 240 KW, 600 volts.
220 Series Explosion Proof Duct Heater:
- CSA Approved for Class I, Division 2 locations where a hazardous gas is occasionally present.
- Ignition temperatures as low as 392°F (200°C).
- For ducts up to 240" (610 cm) wide by 120" (305 cm) high.
- Ratings up to 1000 KW, 600 volts.
Custom:
- Wider range of sizes than available in the other two designs.
- Vertical airflow.
- Ratings up to 750 KW, 600 volts.
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| Heater Type | Heater Information | KW and Control Range | Class and Division | NEC Ignition Temperature Code | Special Considerations | | 227 Series | For hazardous gas or dust atmospheres
Fits ducts from 12"W x 12"H to 75"W to 35"H | Up to 240 KW
Single stage or SCR Control | Class I, Divisions 1 and 2, Groups B, C and D
Class II, Divisions 1 and 2, Groups E, F and G | T3C 320°F (160°C) | - Fastest delivery of the three designs
- Available for outdoor or wet locations
- Corrosion resistant construction available
- Horizontal airflow only
- Not approved for shipboard use
| | 220 Series | For Division 2 hazardous gases (hazard exists only occassionally) | Up to 1000 KW
Multi-stage or SCR Control | Class I, Division 2, Groups C and D | T3 392°F (200°C) | - Available for outdoor or wet locations
- May be less expensive than 227 Series
- For larger KW designs
- Horizontal airflow only
- Approved for shipboard use
| | Custom | Designed for each project
Not FM or CSA Approved | Up to 750 KW
Multi-stage or SCR Control | Class I, Divisions 1 and 2, Groups C and D
Class II, Divisions 1 and 2, Groups E, F and G | T1 842°F (450°C) through T3B 329°F (165°C) | - Horizontal or vertical airflow
- Slip-in or flanged mounting
- For ducts smaller than 12" x 12"
- Available for outdoor or wet locations
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