Lanair MXB360 - Manual (Page 11)

8. Do not use more than one 90° elbow. Each 90° elbow equals a 10’ run of chimney. The maximum run for the chimney
connector is 30’.
9. Secure all connections in the chimney connector with 3 screws per joint.
10. The chimney connector clearance to any combustible material is 18”. The Class "A” chimney clearance to any com-
bustible is 2”. FOLLOW THE CHIMNEY MANUFACTURER’S INSTRUCTIONS.
11. Do not install heat re-claimers, manual draft controls, or any other type of restrictive control in the chimney.
12. Install a 8” diameter clean out tee with a cap, at the transition of the chimney.
FOLLOW CHIMNEY MANUFACTURER’S INSTRUCTIONS.
13. Use a 8” inside diameter “Class A” insulated chimney pipe to vent exhaust gases through wall, ceilings, attics, roofs,
combustibles, etc..
14. Vent chimney at least 3 feet above the roof and at least 3 feet higher than any portion of the building, roof, or
obstruction within 10 feet of the chimney.
15. The chimney cap should be at least 3’ above the roof exit.
16. Do not use a rotating chimney cap. Use a non-restrictive “Class A” cap made for the type of “Class A” chimney you are
using. FOLLOW CHIMNEY MANUFACTURER’S INSTRUCTIONS.
17. The chimney must be capable of producing a negative -.02 W.C. draft when cold and -.06 W.C. draft when hot. Refer
to Section 5 Draft Instructions.
18. If you are unable to attain the proper draft, check for exhaust fans in the building. To test if there is a problem, open
an overhead door and see if you now have the proper draft. You may have to add one or more sections of “Class A”
chimney to the roof to get the proper draft.
19. The boiler and chimney must be installed in accordance with all state and local codes. The boiler must be
installed by a licensed HVAC/Hydronics contractor in accordance with the specifications listed in this manual.
The chimney must be installed per the chimney manufacturers instruction. Use “Class A” chimney only.
Visit our website at: www.lanair.com 11
Section 4 - Chimney or Vent System
Section 5 - Draft
The boiler should have a (negative) -.02 draft reading when cold, and a (negative) -.06 when hot. Check the boiler when it
is running after 45 minutes. If the reading is not what it should be, adjust the barometric damper according to the
instructions provided with the damper. The draft reading should be taken with a manometer. Consult your heating con-
tractor, or manometers can be purchased from the Lanair Customer Service Department 800-753-1601.
WARNING: FOLLOW THE CHIMNEY MANUFACTURER’S INSTALLATION INSTRUCTIONS AS
WELL AS STATE AND LOCAL FIRE CODES.
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