Overview of Primary Product

ManualsBrandsField Controls ManualsBoiler Venting4" Intake Air Hood

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Please retain these instructions after installation.

This device MUST be installed by a qualiﬁed agency in accordance with the manufacturer's installation instructions. The deﬁnition of

a qualiﬁed agency is: any individual, ﬁrm, corporation or company which either in person or through a representative is engaged

in, and is responsible for, the installation and operation of HVAC appliances, who is experienced in such work, familiar with all the

precautions required, and has complied with all the requirements of the authority having jurisdiction.

READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE PROCEEDING WITH THE INSTALLATION.

Installation Date:

Installed By: Phone:

COMBUSTION AIR SYSTEM

MODEL: CAS-2WM

The Air Boot™ model CAS-2WM is for use only on the designated burner(s) as described in these

instructions only when the speciﬁc burner includes this Air Boot™ when shipped from the burner

manufacturer or where the burner instructions speciﬁcally reference the model CAS-2WM Air Boot™ as an

optional air intake system.

WEIL-MCLAIN OUTSIDE AIR KIT

FOR USE WITH OIL BURNER MODELS QB-180 & QB-300

ITEMS INCLUDED IN KIT:

1 - Air Boot™

1 - 4" VRV (Vacuum Relief Valve)

1 - 4" IAH Hood

1 - Set of Gaskets

1 - Burner Coupling Set

2 - Mounting Bolts

INSTALLER SUPPLIED ITEMS:

Air Duct Pipe and Elbows as needed - use 4" Dryer

Venter, Aluminum or Galvanized Steel

⁄4" NPT 90° street ell for oil line, if needed

Exterior rated caulk, silicone sealant, or equivalent

4" VRV

4" IAH HOOD

AIR BOOT

Summary of content (8 pages)

PAGE 1
COMBUSTION AIR SYSTEM MODEL: CAS-2WM WEIL-MCLAIN OUTSIDE AIR KIT FOR USE WITH OIL BURNER MODELS QB-180 & QB-300 4" VRV AIR BOOTTM 4" IAH HOOD The Air Boot™ model CAS-2WM is for use only on the designated burner(s) as described in these instructions only when the specific burner includes this Air Boot™ when shipped from the burner manufacturer or where the burner instructions specifically reference the model CAS-2WM Air Boot™ as an optional air intake system.
PAGE 2
THE PURPOSE OF THE VACUUM RELIEF VALVE (VRV) The vacuum relief valve provides combustion air to the burner if the outside air supply is interrupted for any reason. Typical situations would be blockage of the air intake or duct, or wind effect which cause a negative pressure at the air intake hood. Rotate Oil Solenoid valve and realign 90º fitting as shown below.
PAGE 3
7. Now put the oil pump and the AirBoot™ kit coupling back into place. Replace the two 1 ⁄4" oil pump mounting screws. Tighten the screws. 8. Reconnect the burner oil line to the ell fitting on the oil pump per Figure 1, drawings E and F. Figure 4 9. Mount the VRV tee assembly or 90° elbow onto the Air Boot™ intake. Fasten using three (3) sheet metal screws on all joints.
PAGE 4
10. Assemble the VRV balance weight onto the gate. Screw the weight all the way in. Then attach lock nut and knurl nut. (See Figure 6) Figure 6 11. Mount the VRV assembly onto the tee and fasten with the supplied screw and nut in collar tabs. To ensure proper operation, check the gate for being level across the pivot points and plumb.
PAGE 5
12. Refer to Figure 8 for general installation layout. AIR DUCT AND AIR INTAKE HOOD (See Figure 8) 1. Mount the air intake hood through an outside wall. It must be at least 12" ABOVE grade or snow line. 2. Locate the air intake hood at least 3' BELOW or 6' horizontally from any appliance VENT termination. 3. When the appliance is sidewall vented, locate the air intake hood on the same side of the building as the appliance vent outlet. 4. Always mount the air hood with the intake pointed down. 5.
PAGE 6
7. Locate the air hood so the air piping length doesn't exceed the limits below: NUMBER OF ELBOWS MAXIMUM LENGTH OF AIR PIPE 2 to 4 35' 5 28' 6 21' 7 14' 8. Construct the air duct piping with 4" diameter dryer vent or aluminum or galvanized steel pipe, using as few elbows as possible. 9. Fasten and support the air duct piping to prevent damage and separation of joints.
PAGE 7
ADJUSTMENTS AIR INTAKE BOOT AIR SETTING 1. Follow the instructions in the Boiler and Burner Installation Manuals for adjusting and setting the burner. WARNING: Failure to properly adjust the burner after installing this kit can result in severe personal injury, death or substantial property damage. 2. Loosen the air band screw on the Air Boot™. Position the screw at the initial setting on the following chart. Use this setting only as a starting point.
PAGE 8
LIMITED WARRANTY Field Controls, LLC (“Company”) warrants that its products shall be free from defects in material and workmanship under normal use for the limited period indicated, from the date of manufacture, subject to the provisions 1-8 below. Eighteen (18) months All Field Controls Products (except for those listed below as 5 years or 90 days). Five (5) years Field Controls Direct Vent Systems (FDVS), Field Oil Vent Kits (FOVP), and ComboVents (CV).