COZY BFT301 and Installatie- en bedieningshandleiding - Pagina 5

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FRESH

AIR FOR COMBUSTION,

VENTILATION

AND HEAT

DISTRIBUTION

- CONTD.

STEP 4. Compare the total Btu the area can support (from Step 2) to the total Btu in the area the heater wilt be installed

(fioln Step 3). If the total froln Step 2 is larger this is considered an unconfined space, ifBtu total froln Step 3 is larger this

is considered a confined space and provisions must be made t\_radditional combustion and ventilation air. EXAMPLE:

Btu area can support is 56,250, total Btu in area is 106,000

this would be a confined space.

NOTE: A third construction class is one with unusually tight construction, defined as, construction where: (A) Walls

and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of 1 per (6x 10-11 Kg

per pa-sec-ln 2) or less with openings gasketed or sealed, and, (B) Weatherstripping has been added enable windows and

doors, and, (C) Caulking or sealants are applied to areas such as joints around window and door fialnes, between sole

plates and floors, between wall ceiling joints, between wall panels, at penetration t\_rplumbing, electrical, and gas lines,

and at other openings.

"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, ANSI Z223.1, Section 5.3 or applicable local codes." Examples would be to

provide two permanent openings either to an adjoining room, or to the outside. See the National Fuel Gas Code for

details. See Fibre 9 & Figure 10 below.

ater

illl

illllllltll

Equipment located in confined

spaces; all air fioln inside the

building. See 5.3.3(a).

Opening

-- _Chimney

or gas vent

Alternate

air inlet --

jVentilation

louvers

of attic)

4,,.A===_

[

]lHIlll

[

]IIIHH

I I

q']''

]'''

'T'

Ventilation

lomers

foi

1reheated cia,al

space

"-Outlet Air

!Inlet Air

Equipment located in confined spaces; all air from

outdoors - inlet air from ventilated crawl space and

outlet air to ventilated attic. See 5.3.3(b).

FIGURE 9

FIGURE 10

INSTALLATION

Installation and service must be performed by a qualified installel; service agency or the gas supplier.

LOCATION

For most efficient performance, locate heater as centrally as possible in the area to be heated.

Do not install heater in a closet, alcove or small hallway where the heater could be isolated from the space to be

heated and adequate combustion air by closing a door.

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