Procom PCD18T Guia de Instalação descarregar pdf (Página 5)

QUALIFIED INSTALLING AGENCY

Installation and replacement of gas piping, gas utilization equipment or accessories and repair and servicing of equip-

ment shall be performed only by a qualied agency. The term “qualied agency” means any individual, rm, corpora-

tion, or company that either in person or through a representative is engaged in and is responsible for:

a) The installation, testing, or replacements of gas piping or

b) The connection, installation, testing, repair, or servicing of equipment; that is experienced in such work; that is

familiar with all precautions required; and that has complied with all the requirement of the authority having juris-

diction.

In areas that prohibit the use of vent-free heaters, the log set has been tested and approved to the ANSI Z21.60 stan-

dard for Vented Decorative Logs. When used as a vented log set refer to additional instructions on page 11.

WARNING: If the area in which the heater may be operated does not meet the required volume for indoor

combustion air, combustion and ventilation air shall be provided by one of the methods described in the National

Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes.

Today’s homes are built more energy efcient than ever. New materials, increased insulation, and new construction

methods help reduce heat loss in homes. Homeowners weather strip and caulk around windows and doors to keep

the cold air out and the warm air in. During heating months, homeowners want their homes as airtight as possible.

While it is good to make your home energy efcient, your home needs to breathe. Fresh air must enter your home. All

fuel-burning appliances need fresh air for proper combustion and ventilation. Exhaust fans, replaces, clothes dryers,

and fuel burning appliances draw air from the house. To operate you must provide adequate fresh air for these appli-

ances. This will insure proper venting of vented fuel-burning appliances.

PRODUCING ADEQUATE VENTILATION

All spaces in homes fall into one of the three following ventilation classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space

The information on pages 5 through 7 will help you classify your space and provide adequate ventilation.

Conned and Unconned Space

A conned space is a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 cubic meter per

kilowatt) of the aggregate input rating of all appliances installed in that space, and an unconned space as a space

whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 cubic meter per kilowatt) of the aggregate

input rating of all appliances installed in that space. Rooms connecting directly with the space in which the appliances

are installed*, through openings not furnished with doors, are considered a part of the unconned space.

This heater shall not be installed in a conned space or unusually tight construction unless provisions are provided for

adequate combustion and ventilation air.

*Adjoining rooms are connecting only if there are doorless passageways or ventilation grills between them.

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 dened as construction where:

a) walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one

perm (6x10

-11

kg per pa-sec-m

) or less with openings gasketed or sealed and

FRESH AIR FOR COMBUSTION AND VENTILATION

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