LTD HEATER INSTALLATION
LOW TEMPERATURE HEATER SPECIFICATIONS
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| 18" |
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All models | Inside diameter | 18.5/16" |
| Bolt circle diameter | 19.7/16" |
| Length | 22" |
| BTU rating | 400000 |
| Weight | 81 |
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Vapor models | Maximum fuel flow (GPH) | 167 |
| Orifice | 5/64" |
| Modulating valve bypass orifice | Red |
| Minimum operating pressure | 2 |
| Maximum operating pressure | 20 |
| Minimum line size | 3/8" |
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Natural gas | Maximum fuel flow (CFH) | 421 |
models | Orifice | 9/64" |
| Modulating valve bypass orifice | Yellow |
| Minimum operating pressure | 1 |
| Maximum operating pressure | 7 |
| Minimum line size | 1/2" |
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