SPECIFICATIONS AND DIMENSIONS
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| Shipping Weights (lbs) |
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| BTUH | (A) | (B) | (C) | (J) |
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| Cast Iron | Capron |
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| Heater | Heater |
| Indoor | |||||
Heater | Input | Cabinet | Flue | Indoor |
| Gas | Water |
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| w/Stackless | w/Stackless |
| Draft- | |||||||
Model | (000) | Width | Dia. | Drafthood |
| Conn. | Conn. | Top | Top |
| hood |
R185B | 181 | 6" | 3/4" | 2" | 191 | 172 |
| 12 | |||
R265B | 264 | 7" | 3/4" | 2" | 214 | 195 |
| 15 | |||
R335B | 334 | 8" | 3/4" | 2" | 234 | 215 |
| 17 | |||
R405B | 399 |
| 9" |
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| 3/4" | 2" | 253 | 234 |
| 20 |
*Designation for Propane is "EP", Natural gas is "EN". Prefix "C" is for Cast Iron (ASME) Headers; "P" is for Plastic (Polymer) Headers. Atmospheric heaters: reduce input 4% for each 1000 ft. above sea level when installed above 2000 ft. elevation. Low NOx heaters: for elevations above 5,000 feet consult factory. For Canada, no
Fig # 9037.2
*Electrical Connection On Left Side is
COMBUSTION AND VENTILATION AIR (Indoor Units Only)
Theheatermusthavebothcombustionandventilationair. Minimum requirements for net free air supply openings, one opening that is 12 inches from the ceiling for ventilation and one opening that is 12 inches from the floor for combustion air as outlined in the latest edition of the National Fuel Gas Code, ANSI
CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty.
a. All Air From Inside The Building:
Each opening shall have a minimum net free square | |||
inches as noted: |
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Model Square Inches Model Square Inches | |||
185 | 181 | 335 | 333 |
265 | 264 | 405 | 399 |
b. All Air From Outdoors:
When air is supplied directly from outside of building, each opening shall have a minimum net free square
inches as noted: |
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| Model |
| Square Inches | |
| 185 |
| 46 |
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265 |
| 66 |
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335 |
| 84 |
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405 |
| 100 |
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