W415-1013 / C / 11.19.13
44
EN
“ADD ON”
WOOD
FURNACE
EXISTING
FURNACE
“ADD ON”
WOOD
FURNACE
EXISTING
FURNACE
DIVIDER
“ADD ON”
WOOD
FURNACE
ELECTRIC
FURNACE
(downflow
or counterflow)
ALLOWABLE
PROHIBITED
HORIZONTAL
EXISTING
FURNACE
“ADD ON”
WOOD
FURNACE
H
“ADD ON”
WOOD
FURNACE
EXISTING
FURNACE
(downflow
or counterflow)
or counte
“ADD ON”
WOOD
FURNACE
HORIZONTAL
EXISTING
FURNACE
H
○
For installations on combustible
fl
ooring an ember stop protective
fl
oor covering must be installed.
○
An ember stop of minimum 0.015" (0.4mm) thick sheet steel extending 18" (457mm) in front of
fi
rebox door
to 2” (76mm) behind the cleanout of the chimney. The ember stop width must protrude a minimum of 8”
(203mm) from both sides of the furnace.
○
Carpet or other
fl
oor covering shall be removed before placement of ember stop sheet.
○
Refer to Section 7.1 of CAN/CSA-B365-10 for complete details of
fl
oor protection.
6.6 EMBER
STOP
SAMPLES OF ALLOWABLE PLENUM/DUCTING ARRANGEMENTS CONTINUED
H3.59
USE EXTREME CAUTION WHEN BUILDING PLENUM/DUCT WORK SYSTEMS SO AS NOT TO CREATE
A CONDITION WHERE HOT AIR CAN BE ENTRAPPED IN DUCT WORK, OR CREATING A REVERSE
FLOW CONDITION. WHERE HOT AIR WOULD FLOW BACKWARDS INTO THE COLD AIR RETURN
PLENUM AND DUCTING.
NEVER CONNECT THE WARM AIR SUPPLY OUTLET OF THE “ADD ON” FURNACE TO THE COLD AIR
SUPPLY OF THE CENTRAL (ORIGINAL) FURNACE. FAILURE TO COMPLY MAY RESULT IN DAMAGE
TO PROPERTY AND CREATE A FIRE HAZARD.
FOR MORE INFORMATION ON ALLOWABLE/PROHIBITED METHODS OF CONNECTING "ADD ON"
FURNACES TO A PRE EXISTING FURNACE SEE FIGURES 1 THROUGH 7 OF CAN/CSA-B366.1-M91.