Install Instructions

2. After determining location, cut a hole in the wall to

accept 4 inch air intake pipe. See Figure 20.

3. Remove the metal knockout in right side of burner

cover. Install U.S. Boiler Company Inlet Air

Accessory Kit, P/N 611280031.

4. Mount the Vacuum Relief Valve Tee Assembly (P/N

8116268 included with Kit) or 90° elbow into the

burner inlet ring. See Figure 20.

a. Secure with at least three (3) sheet metal screws

evenly spaced around the burner inlet ring.

b. Assembly the vacuum relief valve balance

weight onto the gate. Refer to the vacuum relief

valve manufacturer's instructions.

c. Mount the vacuum relief valve into the tee and

fasten with a screw and nut in collar tabs. To

ensure proper operation, the gate must be level

across the pivot point and plumb. Refer to

vacuum relief valve manufacturer's instructions.

5. Install remainder of air intake, securing each joint

with at least three (3) sheet metal screws evenly

spaced.

6. Install air intake terminal. See Figure 20.

NOTICE

Intake terminal must be at least 12 inches above

grade plus snow accumulation.

7. Seal all external joints with weatherproof caulk.

WARNING

DO NOT locate air intake where petroleum

distillates, CFC's, detergents, volatile vapors or

any other chemicals are present. Severe boiler

corrosion and failure will result.

Figure 20: Optional Air Intake Piping Installation - Only Available with Beckett Burner

SECTION VIII: VENTING AND AIR INTAKE PIPING (continued)