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Field Controls WMO-1 Blocked Vent Switch Oil Fired

Field Controls

$108.95

In Stock

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SKU:
WMO-1
Product Type:
Blocked Vent Switch
Subcategory:
Oil Burner Safety Control
Application:
Residential/Commercial
System Type:
Oil Furnace, Oil Boiler
Installation Type:
OEM Replacement
Mounting Type:
Vent Pipe Mount
Fuel Type:
Oil
Inlet Size:
3/4" diameter hole
Connection Type:
Vent Pipe
Control Type:
Manual Reset
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Flat-rate shipping. The same price to anywhere in the 50 states.

Ships same or next business day · UPS Ground, typically 1–5 business days.

The WMO-1 is a blocked vent safety switch designed for oil-fired appliances operating under negative pressure. It detects blocked vent systems by sensing hot flue gases backing up through its heat transfer tube and can be wired to shut off the oil burner. Includes gasket and requires manual resetting. Must be installed by a qualified agency in accordance with manufacturer instructions.