Originally Posted by northstar1960
with those non vented wave heaters i would also ad a co alarm . i don't trust them even when they are set up right you will get combustion gases in the unit . your better off with an electric heater . but if you got to use one be very careful . there's a reason why they tell you to leave a window open . an oxygen sensor may not be good enough a carbon monoxide alarm will be better only need about 10ppm to start causing problems
Found this letter from Camco concerning the wave heater:
International Sales Manager
Camco Manufacturing Inc.
121 Landmark Dr. Greensboro, NC 27409
Tel: 800.334.2004 Ext. 151
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(1) Are the Wave heaters comparable to other unvented heaters with regard to producing CO?
A.Yes. As long as adequate ventilation is provided, their CO production will be notably less than traditional, open-flame heaters.
(2) Is it suitable for use at night in the RV while humans are sleeping anywhere in the coach?
A.Yes. We use the term "sleep area" to encompass couches, convert-a-beds, and other such areas that a person may sleep outside of a traditional bedroom.
We do not recommend sleeping adjacent to the heater or with it in a bedroom. Within the direct vicinity of the heater, there is a localized increase in CO and a decrease in oxygen content. It is necessary to allow this to dissipate into the volume of air within the room and exchange it through ventilation. Typically, a [closed] bedroom does not provide sufficient volume of air for safe heater operation.
(3) Must/should the ventilation be 50% from the very bottom of the coach, with the other 50% at the very top (skylight vent) as many have advised, or can oppose windows be opened equally?
A.Our recommendation for ventilation is in the Air Supply section of the owner's manual. It states:
This heater consumes air oxygen from the room in which it is installed. To assure complete combustion, an adequate fresh-air supply to the room is necessary. It is good practice to have at least two openings, one high and one low. The room must have a total of at least 24 square inches free-air opening (i.e. an opening of 4" x 6"=24 square inches).
Provide additional ventilation of at least 2 square inches for every 1,000 BTUs per hour of input for any additional fuel burning appliances used at the same time.
It is the best practice to provide a low and a high opening. But in cases where this is not possible, cross-draft ventilation may be used as long as the heater is in the vicinity of the cross-draft. The most common form of this would be to open a window on opposing walls and place the heater in line with the windows.
(4) Where is the best place to locate the two Kidde CO monitors I have for my RV as far as height in the RV, and area of the coach to place them?
A.Place one in the sleeping area and the other one near the heater, but not so close that it reads the false concentrations. The ideal height is the sleeping height. To avoid damage or tampering by pets and children, it is acceptable to place it chest high.