Lennox International Inc BV4000C DOOR/GLASS Gasket and ASH Dump Gasket, Servicing Glass

MAINTENANCE

DOOR/GLASS GASKET AND ASH DUMP GASKET		To inhibit the build up of creosote, adjust the primary air
A 3/4" spun fiberglass gasket provides the seal around		control to a medium-high or high setting for a 10-minute pe-
the fuel door and a flat spun fiberglass rope gasket (1/8”		riod each day. Do not attempt to burn out heavy creosote
x 1”) provides the seal around the glass. A cerawool pad		accumulations in this manner. This must be removed from
(4 1/4” x 4 1/4” x 1/2”) provides the seal for the ash dump		the chimney by scraping or brushing to reduce the risk of a
cover. Should these gaskets become frayed or damaged,		chimney fire.
they should be replaced with the same size and type as		Burn Approved Fuel Only - This stove is approved for
the original gasket. Contact your dealer for ordering. Use
		burning dry seasoned natural wood only. Using green or
high temperature silicone sealer as an adhesive for re-
		inadequately seasoned wood may increase creosote
placing door and ash dump gaskets. The glass gasket
		buildup.
has a self-adhesive backing.
		Inspection Frequency - The chimney connector and
WARNING: The gaskets must be kept in good condition.
		chimney should be inspected at least twice monthly dur-
Do not leave the stove burning with the door or ash dump		ing the heating season to determine if a creosote buildup
cover off. This will cause excessive heat build up in the unit		has occurred. If creosote has accumulated it should be
and could ignite surrounding combustibles as well as		removed to reduce the risk of a chimney fire.
damage the stove by overfiring it. Overfiring is a condition		Cleaning - Remove the catalytic combustor and open the
where excessive temperatures are reached, beyond the
		bypass damper prior to having your chimney cleaned
design capabilities of the stove (such damage is not cov-		(should be done by a qualified chimney sweep). See
ered by the manufacturer's warranty).		Maintenance, Catalytic Combustor, on page 19 for in-
SERVICING GLASS		structions on removing catalytic combustor.
		IMPORTANT: Make sure the bypass damper is in the
CAUTION: Be careful not to abuse door assembly by		open position prior to chimney cleaning.
striking or slamming it. If the door assembly or glass is
		In the event of a chimney fire - Make sure the fuel door is
broken or damaged, they must be replaced before
heater can be safely operated. Use only components		securely closed. Adjust the primary air control to the lowest
provided by the manufacturer as replacement parts.		(most closed) setting. Call the fire department immediately.
Cleaning Glass: Ensure stove is cold prior to cleaning glass.		After a chimney fire, the complete chimney system should be
		checked by a qualified technician before further use.
A commercial glass cleaner designed for stoves is recom-
mended. Do not use abrasive cleaners.		Consult your dealer for suggestions on proper chimney care.
Replacing Glass:		Contact your local municipal or provincial fire authority for
1.	Remove door from stove by lifting door up and off hinge	information on how to handle a chimney fire. Have a clearly
	pins: Place the door on a flat protected (towel) clean flat	understood plan for handling a chimney fire.
	surface with the inside of the door facing up. Remove the	CATALYST REPLACEMENT
	glass clips (by removing screws holding clips), then
		The normal expected life of a catalytic combustor is
	carefully remove broken glass one piece at a time (pro-
		10,000 to 12,000 hours (if appliance is operated correctly
	tective gloves are recommended).
2. Clean area where the glass with gasket will be installed.		and proper fuels are used). If the catalyst has been deac-
3.	Install new glass with gasket (use only factory 5-mm	tivated, it should be replaced. Symptoms of deactivation
	glass with glass channel gasket. Do not substitute).	include – noticeably darker smoke exiting chimney and
	Carefully reinstall glass clips. Be very careful not to	less heat output. If these symptoms remain after normal
	overtighten screws.	maintenance or a major cleaning (soak in heated vine-
4.	Reinstall door.	gar/water solution, see page 19), the catalyst probably
CREOSOTE FORMATION AND NEED FOR REMOVAL		needs replacement. Also, if the catalyst is broken and/or
		missing large pieces, it should be replaced.
What is Creosote - When wood is burned slowly, it pro-		Note: The catalyst does not need to be glowing to be
duces tar and other organic vapors, which combine with ex-
		working. It will glow at times, but it can work very effec-
pelled moisture to form creosote. The creosote vapors con-
		tively at temperatures well below the 1000° F level at
dense in the relatively cool chimney flue of a slow-burning
		which it will begin to glow.
fire. As a result, creosote residue accumulates on the flue
lining. When ignited this creosote makes an extremely hot		CLEANING BLOWERS
fire. Also, creosote deposits tend to form in long runs of		The blowers require inspection and cleaning annually to
venting where gases become too cool prior to exhausting.		remove lint, dust, etc. If there are pets in the dwelling, the
Note: Single wall pipe cools rapidly, therefore installations		blowers should be cleaned at least twice a year To ac-
using this type of flue are more susceptible to creosote de-		cess, remove blower cover (remove the two ¼” hex head
posits.		screws), then inspect propellers (replace if cracked, bro-

ken or melted) and vacuum out lint, dust, and debris. PAGE 18