Submittal Sheet

ManualsBrandsField Controls ManualsBoiler VentingBeckett Oil Burner AirBoot Kit (2.0 GPH)

Page 5

DUCT WORK INSTALLATION

1. Duct length distance, a maximum of 30 linear feet of standard duct pipe and two (2) 90° elbows at

maximum firing rate. Subtract 7 feet from the maximum linear feet for every 90° elbow added.

Longer pipe lengths require the use of a larger pipe between the VRV and the intake

hood. It also requires the use of a vent pipe increaser at the VRV and a reducer at the

intake hood. (See Table 1)

Table 1

Pipe

Diameter

Maximum Equivalent

Pipe Feet (between Air boot™

and duct termination)

Elbow*

Equivalent

Feet

Reducer or

Increaser

Equivalent Feet

4” 44’ 7’ -

5” 60’ 9’ (4” to 5”) 3’

6” 90’ 11’ (4” to 6”) 6’

*Note: Subtract the elbow or reducer equivalent feet from the maximum

equivalent feet to get maximum linear feet of pipe.

2. Route the duct work from the VRV tee to the inlet vent termination with as minimum a number of

elbows as possible.

3. Secure and support the duct work for the design and weight of the material used, to prevent physical

damage and separation of joints. For guidelines refer to recognized national building codes or

according to any local codes.

4. To reduce uncontrolled air leakage into the duct, tape all joints and seams using standard duct tape.

NOTE: Try to run a minimum of 12 feet of duct to help temper the outside air being brought into

burner.

AIR ADJUSTMENT

1. Adjust the air adjustment knob on the side of the Air Boot™ (See Table 2) to rough air setting.

NOTE: For proper burner operation, burner should be set up by using a combustion analysis

test set.

Table 2

ROUGH AIR SETTING

Knob Setting

GPH

CAS-2B CAS-2C CAS-2W

.75 25° 15° 70°

1.00 60° 25° 90°

1.50 160° 105° 135°

2. Start the burner and adjust the air control as needed to achieve the required CO

and smoke levels. Set over

fire draft to appliance manufacturers’ specifications (typically -.02” of water). Secure air control knob with

indicator bracket. If draft levels are not obtainable or controllable, use standard industry methods to control the

draft or call the Field Controls Tech Line at 1-800-742-8368 for more information, or check the website at

www.fieldcontrols.com.

3. Next, adjust the VRV gate by screwing the adjustment weight in until the VRV gate is just closed.

4. Re-check the burners operation and adjust accordingly.

5. Lock the adjustment weight in position by tightening the hex nut on the VRV gate.