HP DB-102 manual Clearances Fig S102-1, Minimum safety clearances to combustibles are

SCOTTY WOOD FURNACE – INSTRUCTION MANUAL

We recommend that the KERR SCOTTY Wood Furnace be connected to its own chimney. However, two or more fuel fired appliances, other than fireplaces or incinerators, may be connected to the same chimney.

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 storey;

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.

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.

2.5CLEARANCES (Fig S102-1)

The KERR SCOTTY Wood Furnace is to be installed in accordance with National Building Code or local regulations. Allowances front and rear must be made for cleaning and servicing.

NOTE: Regardless of minimum clearances to combustibles for safety reasons, a minimum clearance of 30 inches (765 mm) should be allowed at the furnace rear for cleaning (due to length of cleaning rake) and access to smoke pipe.

Minimum safety clearances to combustibles are:
Front	48”	1220 mm
One Side	6”	155 mm
Other Side (for rear access)	24”	610 mm
Rear (see Note above)	24”	610 mm
Flue Pipe to combustible, other furnace & electrical wiring	18”	457 mm
Wood Furnace Above Plenum and 6’(1.8 m) of duct	6”	153 mm
Supply Duct beyond 6’	2”	50 mm
Return Duct Plenum and 6’(1.8 m) of duct	6”	150 mm

Scotty 12 Oct-06