Retrofitting To An Existing Brick Chimney
The CFM Majestic Products Company strongly recommends installing an approved chimney liner in an existing brick chimney.
This will maximize the potential draft of the chimney and lessen the effects of slow chimney start up.
This is important because many homes (including older renovated ones) have become much tighter with respect to air exchange (a home breathing). An overly tight home will create conditions that will affect proper vent performance.
It may be necessary to install some form of makeup air to the lowest extremities of the home. This will help to ensure the above noted condition will not effect the proper operation of this or any other combustion fireplace within the dwelling.
VENT SAFETY SYSTEM
This fireplace is equipped with a vent safety shut down switch. This switch is factory installed, wired and tested. Check and make sure the switch and wires are in the proper position. The safety switch is heat activated and wired in series with the pilot system.
Operation of this fireplace when not connected to a properly installed and maintained venting system or tampering with the vent safety shutoff system can result in carbon monoxide (CO) poisoning and possibly death.
PROPER VENT PERFORMANCE
Check
Draft
Here
Fig. 12
A spillage test must be performed prior to leaving the fireplace with the customer. Carry this test out in the following manner.
1)Close all windows and doors in the room; start all exhaust fans in the house and furnace blower.
2)Light the fireplace and place in operation on high fire.
3)After several minutes, test with smoke match that there is adequate "pull" at the draft hood opening (located on the sides of the fireplace near back. See Figure 12) If the flue is blocked (match being blown back into room) the Vent Safety Switch will automatically shut down the heater.
4)Should the heater turn off, wait approximately
COMBUSTION AIR
It is very important that an adequate air supply is available when the unit is being operated. Since most homes of today are tightly sealed and insulated, additional make- up air is usually necessary.
This fireplace has been designed to operate by drawing air in from the front and outer perimeters of the fireplace. The air provides combustion air ensuring a clean burning flame, dilution air for proper venting, as well as, the air which the fan circulates over the firebox/heat exchanger system.
Insulating around the fireplace will result in overheating and possible malfunctioning of the circulating fan.
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