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Existing Furnace Removal

NOTE: When an existing furnace is removed from a venting

system serving other appliances, the venting system may be too

large to properly vent the remaining attached appliances.

The following vent testing procedure is reproduced from the

American National Standard/National Standard of Canada for

Gas-Fired Central Furnaces ANSI Z21.47—latest edition,

CSA-2.3 latest edition Section 1.23.1.

The following steps shall be followed with each appliance

connected to the venting system placed in operation, while any

other appliances connected to the venting system are not in

operation:

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal

pitch, as required by the National Fuel Gas Code, ANSI

Z223.1 or the Natural Gas and Propane Installation Code,

CSA B149.1-05 and these instructions. Determine that there

is no blockage or restriction, leakage, corrosion and other

deficiencies which could cause an unsafe condition.

3. As far as practical, close all building doors and windows and

all doors between the space in which the appliance(s)

connected to the venting system are located and other

spaces of the building.

4. Close fireplace dampers.

5. Turn on clothes dryers and any appliance not connected to

the venting system. Turn on any exhaust fans, such as range

hoods and bathroom exhausts, so they shall operate at

maximum speed. Do not operate a summer exhaust fan.

6. Follow the lighting instructions. Place the appliance being

inspected in operation. Adjust thermostat so appliance shall

operate continuously.

7. Test for spillage from draft hood appliances at the draft hood

relief opening after 5 minutes of main burner operation. Use

the flame of a match or candle.

8. After it has been determined that each appliance connected

to the venting system properly vents when tested as outlined

above, return doors, windows, exhaust fans, fireplace

dampers and any other gas-burning appliance to their

previous conditions of use.

9. If improper venting is observed during any of the above tests,

the venting system must be corrected in accordance with the

National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or

Natural Gas and Propane Installation Code, CSA B149.1-05.

If resizing is required on any portion of the venting system, use

the appropriate table in Appendix G in the latest edition of the

National Fuel Gas Code, ANSI Z223.1 and/or Natural Gas and

Propane Installation Code, CSA B149.1-05.

Thermostat Location

The thermostat should be placed approximately 5 ft (1.5 m) from

the floor on a vibration-free, inside wall in an area having good air

circulation.

NOTE: Do not install the thermostat where it may be influenced

by any of the following:

■ Drafts, or dead spots behind doors, in corners or under

cabinets

■ Hot or cold air from registers

■ Radiant heat from the sun

■ Light fixtures or other appliances

■ Radiant heat from a fireplace

■ Concealed hot or cold water pipes or chimneys

■ Unconditioned areas behind the thermostat, such as an

outside wall

Consult the instructions packaged with the thermostat for

mounting instructions and further precautions.

COMBUSTION AND VENTILATION AIR REQUIREMENTS

Improved construction and additional insulation in buildings have

reduced heat loss by reducing air infiltration and escape around

doors and windows. These changes have helped in reducing

heating/cooling costs but have created a problem supplying

combustion and ventilation air for gas-fired and other

fuel-burning appliances. Appliances that pull air out of the house

(clothes dryers, exhaust fans, fireplaces, etc.) increase the

problem by starving appliances for air.

House depressurization can cause back drafting or improper

combustion of gas-fired appliances, thereby exposing building

occupants to gas combustion products that could include carbon

monoxide.

If this furnace is to be installed in the same space with other gas

appliances, such as a water heater, ensure that there is an

adequate supply of combustion and ventilation air for the other

appliances. Refer to the latest edition of the National Fuel Gas

Code NFPA 54/ANSI Z223.1 or Natural Gas and Propane

Installation Code, CSA B149.1-05 or applicable provisions of the

local building codes for determining the combustion air

requirements for the appliances.

NOTE: This furnace must use indoor air for combusion. It cannot

be installed as a direct vent, or sealed combustion, furnace.

Most homes will require outside air to be supplied to the furnace

area by means of ventilation grilles or ducts connecting directly

to the outdoors or spaces open to the outdoors such as attics or

crawl spaces.

Category I Venting—Vertical Venting

Category I Venting is venting at a nonpositive pressure. A furnace

vented as Category I is considered a fan-assisted appliance. The

vent system does not have to be “gas tight.”

NOTE: Single-stage gas furnaces with induced draft blowers

draw products of combustion through a heat exchanger allowing,

in some instances, common venting with natural draft appliances

(for example, water heaters).

Goodman 51

To avoid property damage, personal injury or death,

sufficient fresh air for proper combustion and ventilation

of flue gases must be supplied. Most homes require

outside air be supplied into the furnace area.

WARNING

Goodman 66

To prevent possible personal injury or death due to

asphyxiation, this furnace must be Category I vented.

Do not vent using Category III venting.

Provisions must be made for venting combustion

products outdoors through a proper venting system.

The length of flue pipe could be a limiting factor in

locating the furnace.

WARNING

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Whirlpool WPIO-369B Manuale delle Istruzioni Pagina 8

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