Archgard Chalet 1800I, Руководство по установке, эксплуатации и обслуживанию для пользователей, Страница: 14 / 36

Chalet 1800 Ins 14
INSTALLATION INTO A MASONRY CHIMNEY
In the USA, there are two ways that this insert can be installed into a masonry fireplace. One is
with a full Stainless Steel Liner or Positive Flue Connection or the second method, which is called
the Direct Connection or the connection from the flue collar of the insert to the first flue tile in the
chimney.
We at Archgard recommend the Full Liner installation for numerous reasons.
The CHALET 1800 WOOD Fireplace Insert is designed with a 6" flue collar and by installing a full
liner from the top of the flue collar of the insert all the way to the top of the chimney optimizes draft
conditions and performance and it eliminates the need to pull the insert out of the fireplace every
time you need to have the chimney swept.
You will find that if you are doing the full reline, you may also have to insulate the liner to manu-
facturers installation instructions. The benefit to insulating the liner is that it stays hotter, therefore
you will get a better draft and less condensation which means less creosote which means a safer
better performing system.
The other installation option is the Direct Connection. In this method, a blocker plate is installed in
the throat area of the fireplace with a hole, the diameter of the flue pipe, cut out in the area above
the flue of the insert. This blocker plate is installed and a stainless pipe (stainless steel because it
is in a concealed space - do not use black or galvanized pipe) installed through the hole and up to
the first flue tile. The insert is installed into the firebox and the flue pipe is hooked up to it and the
assembly is sealed.
If it’s an inside chimney and the flue cross -sectional area is more than three times the cross-
sectional area of the flue collar on the insert or if it’s an outside chimney, meaning if it has at least
one side exposed to the weather, and it’s cross
-sectional area is more than two times that of the
flue collar of the insert, then, according to NFPA 211, you cannot install the insert with the Direct
Connect method. You must install a full liner.
The cross sectional area of the 6” flue collar is 26 square inches. Once you start venting this ap-
pliance into an oversize flue, the exhaust gases start slowing down and so does the draft. Once
the draft slows down, the by-products of combustion have more time to give off their heat to the
chimney walls and reduce the draft even more, this is called “residence time” and at the same
time depositing tar droplets on the chimney walls as creosote. The optimum rule of venting is to
have flue gas temperature in the vent system above dew point (in a vapor) so that the exhaust ex-
its the top of your chimney before it turns from a vapor state to a moisture state and condenses on
the chimney walls forming acids and creosote. If the flue is oversized, install a full liner