3. The maximum number of elbows in a run of duct is two.
4. Maintain at least 10" (254 mm) clearance from the outlet grille framing to a combustible
ceiling, side wall or mantel.
5. When passing through a combustible wall or floor, a firestop must be installed at the wall
or floor penetration. The hole size must be in accordance with the duct manufacturer’s
instructions.
6. Do not connect the hot air ducts to a central heating system. Malfunction of the heating
system’s fan will cause the fireplace to overheat.
8. Do not use insulated flexible ducts as they may overheat.
9. Do not use tees or any other components than the ones specifically listed here.
10. All ducts must extend upwards or horizontally.
Never route the ducting downwards
.
11. The hot air outlet grilles must be installed with the louvers pointing downwards in order to
prevent overheating adjacent ceilings.
12. Always install the two outlet grilles when using the hot air outlet kit and blocking the
upper louver of the fireplace.
3.5.2 Central Forced Air Kit (Not tested under EPA certification)
The knock-outs provided on the back and on the sides of the OSBURN
STRATFORD
allow
the connection of insulated flexible pipe which enables you to heat adjacent rooms up to 50
feet from the fireplace (see figure 18).
The ducting system must be installed as described below:
A) Remove the knock outs at the back and/or the side of the fireplace and cut the
insulation around the hole. Fix the adapter into place with screws. You can use more
than one outlet on the fireplace (figure 16);
B) Attach the 5
″
flexible pipe, using the collars provided. Important: Make sure that the
plastic wrapping around the flexible pipe is not in contact with the fireplace;
C) Attach the flexible pipe to the fan’s air inlet using the collars provided (figure 17);
D) Attach a flexible pipe to the fan’s air outlet and route the flexible pipe to the chosen
location. The ducting system can be installed either in an upper room or in a lower
room;
E) At that point, the flexible pipe can be attached to any air distribution grille.
F) Make the electrical connections to the PC Board as explained with the forced air kit
owner’s manual.
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