SCOTTY SS DB-202A, Owner'S Manual

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SCOTTY SS – INSTRUCTION MANUAL
Scotty SS Nov-05 25
3.2 Duct Connection
– (Fig S202-2, Fig S202-4)
See template packed in Scotty SS firebox for the dimensions and locations of
permissible openings in the wood furnace casings for ducts, blower or emergency air.
Make or enlarge the opening in the wood furnace casing exactly as identified for ADD-
ON connection and on the appropriate side, trim the wood furnace insulation flush with
cut opening. Fasten edges of insulation securely with metal straps or bend tabs of duct
starting collar over insulation to hold it in place.
Make all duct connections for the “S” type interconnection – See. Fig. S202-2 and S202-
4.
IMPORTANT – If necessary move main ducts to meet safe clearance requirements of
ADD-ON wood furnace. See Fig. S202-1.
3.2.1 S-Type Duct Connection (
Fig S202-2)
Use only 10” x 20” “S” type duct interconnection. Duct elbows must be increasing from
10” x 20” to 12” x 20” clinch collar type.
DO NOT use duct elbows having an inside radius less than 6”.
3.2.2 Divided Plenum
(Fig S202-4)
The Kerr Scotty SS DB-202A is also certified for installation using a divider in the
plenum of the oil furnace.
CAUTION: When a plenum divider (split plenum) is used in the oil furnace warm air
plenum, all fan limit controls in the oil furnace plenum must be located 5”
(127 mm) BELOW the divider. Limit controls for either the wood furnace or
the oil furnace shall not be within 5” (127 mm) of any inlet or outlet duct or
plenum divider when the controls are mounted as specified.