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| VENTING - CONTINUED |
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| More |
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| 10’ or |
| than 10’ | Height above any |
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| 10’ | roof surface |
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| Less | ||
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| within 10’ |
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| Ridge | horizontally |
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| 2’ Min. | ||
| 2’ Min. |
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| Ridge | 3’ Min. | ||
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| 3’ Min. | ||||||
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| Chimney |
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| Chimney | |
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| FIGURE A |
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| This appliance is equipped with a blocked flue switch. |
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| Listed | ||||
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| 3’ | 2’ Min. | Vent Top | |
| WARNING: Do not bypass the blocked flue switch. To |
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| Storm Collar | ||||
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| do so could expose the consumer to property damage, |
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| Roof | ||
| personal injury or possible death. |
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| Flashing | ||
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| Oval to round | |||
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| This switch, when activated, will interrupt the electrical circuit between |
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| adapter | |||
| the transformer and the gas valve causing the main burner flame to |
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| extinguish. The main burner will not |
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| Listed “BW” | |||
| has been manually reset. To reset the switch, after locating it between | 12’ |
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| Vent Pipe | |||
| the bottom of the fan shroud and the top of the draft diverter, simply |
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| push the red button on top of the switch. If the homeowner experiences | Min. | Ceiling | Base Plate | ||||
| this problem, then the vent system must be checked and corrected. |
| Header | |||||
| NOTE: An existing vent that has worked for years may not be adequate |
| Plate | |||||
| for today’s appliances because of higher efficiency requirements that |
| Spacer | Plate | ||||
| result in lower stack temperatures. |
| Lances |
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| WARNING: Operation of this wall furnace when not connected to a |
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| 2x4 Wall | |||
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| Stud | ||||
| properly installed and maintained venting system or tampering with |
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| the blocked flue switch can result in Carbon Monoxide (CO) |
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| poisoning and possible death. |
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| (SEE LISTOF POSSIBLECAUSESAND CORRECTIONS ON PAGE19). |
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| FIG. 1 - VENT INSTALLATION | |||
| All type “B” vents shall extend in a generally vertical |
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| direction with offsets not exceeding 45 degrees, except |
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| that a vent system having not more than one 60 degree |
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| offset may be allowed. |
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| Red |
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| Red |
| Any angle greater than 45 degrees from the vertical is |
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| Button | |
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| considered horizontal. The total horizontal run of a vent |
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| Blocked | |
| plus the horizontal vent connector shall be not greater |
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| Blocked |
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| than 75 percent of the vertical height of the vent. |
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| Flue | |
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| Switch |
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| Switch |
| Any offsets used should be as far above the drafthood as |
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| possible to allow a venting action to begin before any |
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| restriction is encountered. |
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| Draft Diverter |
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| Draft Diverter | ||
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| Relief Opening |
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| Relief Opening | ||
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| “CF35” Series Counterflow |
| “CF50/55/65” Series Counterflow | |||
Page 4
