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| Model |
Doe
Heating Capacity BTU/HR |
IBR
Net Rating Steam BTU/HR |
DIM
"A" INS. |
AFUE%
Efficiency (No Stack Damper Required) |
| NS-118 |
118,000 |
89,000 |
16-¼ |
81.7 |
| NS-145 |
145,000 |
109,000 |
16-¼ |
80.2 |
| NS-156 |
156,000 |
117,000 |
16-¼ |
80.0 |
| NS-177 |
177,000 |
133,000 |
20-½ |
82.3 |
| NS-204 |
204,000 |
153,000 |
20-½ |
81.1 |
| NS-215 |
215,000 |
161,000 |
20-½ |
80.5 |
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