Burnham MST513, MST288, MST396, MST629 manual Install air intake terminal. See Figure

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 17.

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.

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