Field Controls The WMO-1 blocked vent switch is recommended for installation with an oil fired appliance that normally operates with its vent system under a negative pressure. This device is intended to detect a blocked vent system, responds to hot flue gases backing up through its heat transfer tube, and can be wired to shut off the oil burner. It requires manual resetting.

• Efficiently detect flue gas spillage due to a blocked flue, continuous down drafting or inadequate draft condition
• With the safety switch wired in series with the burner circuit, the switch will de-energize the systems burner or burner control once it senses the spillage of hot flue gases
• Silver contact
• Includes (1) blocked vent switch assembly, (2) 5/8-11 UNC hex jam nuts, (1) instruction sheet

Sid Harvey Item #:WMO-1: Replaces Part #:'s : X71-293,
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Field Controls 02724001 Silver Barometric Draft Control for Gas-Fired Furnaces and Boilers is Widely Used for Conversion Burner Installations, Gas Atmospheric Appliances, 6"

• 28.3 sq-inch capacity
• 5 - 6" pipe size
• 24 ga (ring and gate), 26 ga (collar) thickness
• Because it is double acting, it opens out to relieve positive vent system pressures as low as 0.01"
• Can improve combustion stability and draft on many gas atmospheric installations with venting problems
• Provides precise, accurate control of drafts at levels higher than permitted by a standard draft diverter

Sid Harvey Item #:100-10: Replaces Part #:'s : 40573,
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Field Controls 100-10

The Field RC is furnished as standard equipment on many leading brands of oil or coal-fired heating equipment. It is calibrated to allow for easy adjustment to the furnace or boiler manufacturers specifications. Designed for settings from 0.02 - 0.08", this control is so sensitive that instrumentation should be used when adjusting the unit during installation.

• 20 ga steel ring and gate, 26 ga collar
• 63.6 sq-inch nominal capacity
• 25-1/4 - 31-1/2 circumference

Sid Harvey Item #:100-26: Replaces Part #:'s : 6H101,
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The Field RC is furnished as standard equipment on many leading brands of oil or coal-fired heating equipment. It is calibrated to allow for easy adjustment to the furnace or boiler manufacturer's specifications. Designed for settings from 0.02 - 0.08", this control is so sensitive that instrumentation should be used when adjusting the unit during installation.

Sid Harvey Item #:100-30: Replaces Part #:'s : x71-292,
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Field Controls 100-30

Field Controls 100-11 Barometric Draft Damper Gas 7" A double-acting control for gas-fired furnaces and boilers is widely used for conversion burner installations, gas draft-induced appliance operation with mechanical draft inducers, or sidewall power venters. It is also recommended for use on gas atmospheric appliances where a draft hood cannot be installed, and can improve combustion stability and draft on many gas atmospheric installations with venting problems. The MG-1 provides precise, accurate control of drafts at levels higher than permitted by a standard draft diverter, which is a frequent requirement with gas.

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Field Controls 100-11

The Field RC is furnished as standard equipment on many leading brands of oil or coal-fired heating equipment. It is calibrated to allow for easy adjustment to the furnace or boiler manufacturer's specifications. Designed for settings from 0.02 - 0.08", this control is so sensitive that instrumentation should be used when adjusting the unit during installation.

Sid Harvey Item #:100-24: Replaces Part #:'s : x89-860,
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Field Controls 100-24

Field Controls 01950201 10" M+MG2 barometric draft control for gas and oil type M+MG2 barometric draft controls overview solid, oil or gas commercial/industrial, this is a series of compact, rugged, heavy-duty controls for use on large residential, commercial, and industrial applications. The Field Type M+MG2 draft control provides precise draft regulations for solid fuels, oil, gas, or oil/gas appliances requiring only the simplest, on-the-job adjustments depending on which fuel is to be utilized. In a gas installation, the double-acting Type M+MG2 is specified instead of a draft hood to give the appliance the assistance of the chimney. In a duel fuel oil/gas or a gas-fired only application, use the M+MG2 as a double-acting draft control with the optional Field Thermal Switch accessory. Use the M+MG2 as a single-acting draft control for oil or solid fuel applications. For any installation with 10" or larger diameter vent pipe, specify our standard M+MG2 Draft Control, the unit that can be adapted to any fuel. The moving part (gate) rests on a long, thin, stainless steel knife edge which, in turn, is supported by self-aligning and self-cleaning bearings. When the heavy gauge gate moves, only the knife edge rests on the bearing for minimum friction and maximum sensitivity to draft changes.

Sid Harvey Item #:100-4: Replaces Part #:'s : 111,
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Field Controls 100-4

The Field RC is furnished as standard equipment on many leading brands of oil or coal-fired heating equipment. It is calibrated to allow for easy adjustment to the furnace or boiler manufacturer's specifications. Designed for settings from 0.02 - 0.08", this control is so sensitive that instrumentation should be used when adjusting the unit during installation.

Sid Harvey Item #:100-22: Replaces Part #:'s : x71-184,
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Field Controls 100-22

Field Controls 00963801 Silver Barometric Draft Control for Residential Oil, Wood and Coal, 6"

• M control lends itself ideally to conditions requiring a great deal of stability and accuracy
• Designed for settings from 0.01 - 0.1"
• Type M features an infinitely variable screw adjustment, permitting an extremely fine instrument setting
• M employs side wings to control air direction with gate curvatures designed to compensate for differences in horizontal and vertical settings

Sid Harvey Item #:100: Replaces Part #:'s : 29218,
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Tjernlund 100-12 Barometric Draft Damper Gas 7"-8",
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Field Controls 100-20 Barometric Draft Control W/Collar 6" For proper operation and efficient fuel consumption in oil, gas, and/or coal-fired heating appliances, draft must remain constant. When it is, combustion is more complete, fuels are utilized efficiently, and money is saved. Field Draft Controls maintain consistent draft by counteracting the negative forces caused by changes in temperature and barometric pressure, as well as the effects of wind.

• With collar

Sid Harvey Item #:100-20: Replaces Part #:'s : x71-179,

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Field Controls 100-20

Weil-McLain Heating Parts 382200345 Blower Fan Motor Replacement Kit GVGV90+ Boilers,
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