PYLE Audio MN300HGA Fresh Air For Combustion And Ventilation, Producing Adequate Ventilation

FRESH AIR FOR

COMBUSTION AND

VENTILATION

	WARNING: This			heater
shall	not	be installed			in a
confined space			or unusually
tight	construction			unless
provisions		are	provided		for
adequate		combustion			and
ventilation		air.	Read		the
follow in g in stru ctio ns					to

insure proper fresh air for this

and other fuel-burning appliances in your home.

PRODUCING ADEQUATE VENTILATION

The following are excerpts from National Fuel Gas Code. NFPA 54/ ANS Z223.1, Section 5.3. Air for Combustion and Ventilation. All spaces in homes fall into one of the three following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 4 through 6 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a

continuous water vapor retarder with a rating of one perm (6×10-11kg per pa-sec-m2) or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings. If your home meets all of the three criteria above, you must provide additional fresh air. See Ventilation Air from Outdoors, page 6.

If your home does not meet all of the three criteria above, see Determining Fresh-Air Flow for Heater Location, page 5

Confined and

Unconfined Space

The National Fuel Gas Code ANS

Z223.1 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with

th e sp ac e	in w h ic h th e
appliances are	installed*, through

openings not furnished with doors, are considered a part of the unconfined space.

This heater shall not be installed in a confined space or unusually

tig h t c o n s tru c t io n				u n le ss
provisions are			provided		for
adequate		combustion			and
ventilation		air.
*	A d j o i n in g		r o o m s		a r e
communicating only if				there	are
d o o rless		p ass ag e w ays			o r
ventilation		grills between		them.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if you have a Confined or Unconfined Space*

Use this worksheet to determine if you have a confined or unconfined space.

Space: Includes			the room in which you will install heater plus any adjoining rooms with doorless passageways
or	ventilation	grills between			the rooms.		×	×
1.	Determine	the	volume of		the space (length
								width height)
	×		×	Height=		cu.ft. (volume of space)
	Length Width
					×			×	height)=2560cu. ft. (volume of space)
	Example: Space size 20ft. (length) 16ft.( width) 8ft. (ceiling
	If additional ventilation to adjoining room is							supplied with	grills or openings, add the volume of these
	rooms to	the	total volume of the space.

2.Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support. (volume of space)÷50 cu. ft.=(Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space)÷50 cu.ft.=51.2 or 51.200(maximum Btu/Hr the space can support)

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and

ventilation air	by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3
or applicable	local codes.

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