Flue Gas Outlet And Combustion Air - QHT BIASI 3 WOOD Instructions Manual

WARNING
The chimney and flue must be made in compliance with building codes and resistant to
high temperature, condensate and mechanical stress, and that are airtight.
• Do not
connect to any chimney flue or vent servicing another appliance.
•
The 3WOOD takes in the combustion air from the room where the boiler is installed, which
MUST FEATURE ventilation openings as required by NFPA standards.
•
The flue (1) must ensure the minimum negative draft between .07 and .12 as specified in the
draft section specified on page
•
Undersized or incorrectly sized flues (1) and exhaust pipes (2) will cause problems of
condensation, which will affect combustion and plug the flue.
•
The joints should be installed with male ends facing down and sealed using materials that can
resist temperatures of at least 700°F.
Note: Material of the chimney connector
(minimum 24 gauge black or blued steel)
NO GALVANIZED PIPE.
1. The solid-fuel-fired boiler does not draw steadily, smells,
experiences smoke roll-out or burns poorly.
2. Any of the above symptoms are alleviated by opening a
window slightly on a calm day.
SOURCES OF COMBUSTION AIR ARE:
•
A mechanical "Fan in a Can".
•
A natural make-up air duct system with heat trap.
FLUE GAS OUTLET
17.
WARNING
COMBUSTION AIR INTAKE
A separate source of combustion air may be necessary if:
3. The house or basement is equipped with a well-
sealed vapor barrier insulation envelope tight
fitting windows and/or has any powered devices
that exhaust house air.
4. There is excessive condensation on windows in
the winter.
5. A ventilation system is installed in the house.
18
7"