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TW2000 WOOD-FIRED BOILER – INSTRUCTION MANUAL
TW2000 10/6/05
14
The National Standard of Canada, Installation Code for Solid-Fuel-Burning
Appliances and Equipment, CSA-B365-01 clause 5.2.9 states that:
Two or more appliances shall not be connected to the same chimney flue unless:
a. The appliances are located on the same story;
b. A negative pressure is maintained at the flue collar of each
appliance;
c. Each appliance is provided with a means to control the rate of flow
of air or flue gases through the appliance combustion and heat
exchanger chambers. Where limitations on flue pressure (draft) are
contained in the manufacturer’s instructions, such means shall be
capable of maintaining at the flue collar, the pressure specified by
the appliance manufacture; NOTE: For the purpose of this Clause,
draft controls include ash pit air control dampers, dampers or draft
slides wherever located, over fire and flue key pipe dampers, and
check draft controls located on or in the flue pipe.
d. The flue pipes of the appliances are connected to a manifold as
close to the chimney as practicable or directly to the chimney in the
following order:
(i) If only solid fuel is used, the flue pipe from the smallest
appliance shall be on top (downstream);
(ii) If different fuels are used as permitted in Clause 5.2.7, the oil
flue pipe shall be on top (downstream); and the solid fuel flue
pipe on the bottom (upstream); and
e. The chimney flue is capable of venting the flue gas by natural draft
when all appliances not interlocked to prevent simultaneous firing
are firing at their maximum rate at the same time.
WARNING: If this setting is exceeded it could cause a solid fuel fire to burn out
of control.
When installing a wood-burning appliance to an existing chimney carefully
inspect entire chimney for the presence of old inlet holes, which may be
improperly covered by metal caps or other unacceptable means. Fill any
openings with brick and mortar to ensure no hazardous openings exist.