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| DIMENSIONS |
| |
| BW1 and BW2 MODELS |
| ||
ASME | VENT | TEMPERATURE/ | 1 1⁄4″ SUPPLY | |
DAMPER | PRESSURE GAGE |
| AQUASTAT | |
RELIEF |
| A |
| 26 1⁄2″ |
VALVE |
|
| ||
|
|
| 8″ | 4 3⁄4″ |
| 1 1⁄4″ NPT |
|
| 1 1⁄4″ |
|
|
| RETURN | |
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| |
| SPILL |
|
| |
| SWITCH | 31 | 3⁄8″ | |
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23 1⁄4″ |
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|
| 12 1⁄4″ |
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| |
|
|
| 5 3⁄8″ |
|
| DRAIN VALVE | ROLLOUT | GAS | INT. PILOT |
|
| SWITCH | CONTROL | |
|
| VALVE | ||
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| |
| LEFT SIDE | FRONT |
| RIGHT SIDE |
DIMENSIONS (In.) | CLEARANCES (In.) |
UNIT SIZE | A | VENT CONNECTION |
037 | 8 | 3 |
070 | 5 | |
105 | 6 | |
|
|
|
140 | 6 | |
175 | 21 | 7 |
210 | 7 | |
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245 | 7 | |
280 | 7 |
| 6 | ||
RIGHT SIDE | 24 | ||
LEFT SIDE | 6 | ||
24 | |||
| |||
TOP |
| 6 | |
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|
| |
BACK |
| 6 | |
FRONT |
| 6* |
*Service clearance requirement 24 in.
RATINGS AND CAPACITIES*
| GAS | NUMBER | MAX | HEATING | NET |
| AFUE % | APPROX | |
| OF | INPUT | CAPACITY | RATING |
| SHIP. | |||
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BW1, BW2 | TYPE | SECTIONS | (BTUH) | (BTUH) | (BTUH) | BW1 |
| BW2 | WT (Lb) |
AAN037 | Natural | 2 | 37,500 | 30,000 | 26,000 | 80.0 |
| 81.4 | 227 |
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|
AAN070 | Natural | 3 | 70,000 | 57,000 | 50,000 | 80.4 |
| 81.6 | 285 |
AAN105 | Natural | 4 | 105,000 | 85,000 | 74,000 | 80.4 |
| 81.5 | 350 |
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AAN140 | Natural | 5 | 140,000 | 113,000 | 98,000 | 80.3 |
| 81.3 | 421 |
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AAN175 | Natural | 6 | 175,000 | 142,000 | 124,000 | 80.2 |
| 81.1 | 488 |
AAN210 | Natural | 7 | 210,000 | 170,000 | 148,000 | 80.1 |
| 81.0 | 564 |
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AAN245 | Natural | 8 | 245,000 | 198,000 | 172,000 | 80.0 |
| 81.6 | 626 |
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AAN280 | Natural | 9 | 280,000 | 226,000 | 197,000 | 80.0 |
| 80.7 | 689 |
*Ratings are for altitudes to 2000 ft. Unit ratings for altitudes over 2000 ft are 4% less for each 1000 ft above sea level.