Whirlpool WPIO-369B Instruction Manual download pdf (Page 9)

All installations must be vented in accordance with National Fuel

Gas Code NFPA 54/ANSI Z223.1—latest edition. In Canada, the

furnaces must be vented in accordance with the National

Standard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2—

latest editions and amendments.

NOTE: The vertical height of the Category I venting system must

be at least as great as the horizontal length of the venting system.

The minimum vent diameter for the Category I venting system is

as shown in the Minimum Vent chart.

Under some conditions, larger vents than those shown in the

Minimum Vent chart may be required or allowed. 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.

Upflow or horizontal units are shipped with the induced draft

blower discharging from the top of the furnace. (“Top” is as

viewed for an upflow installation.) The induced draft blower can

be rotated 90 degrees with the Chimney Transition Bottom kit

(0270F01119) for Category I venting. For horizontal installations,

a 4" (10.2 cm) single-wall pipe can be used to extend the induced

draft blower outlet ¹⁄₂" (1.3 cm) beyond the furnace cabinet.

NOTE: This product is not designed for counterclockwise

induced draft blower rotation.

Vent the furnace in accordance with the National Fuel Gas Code

NFPA 54/ANSI Z223.1—latest edition. In Canada, vent the

furnace in accordance with the National Standard of Canada,

CAN/CSA B149.1 and CAN/CSA B149.2—latest editions and

amendments.

Venting—Furnace Installed in Horizontal Position

NOTE: This furnace is not design certified to be horizontally

vented through an exterior side wall.

The following describes an optional venting procedure when the

furance is installed in the horizontal left discharge position.

To rotate the induced draft blower clockwise, you will need to

purchase one chimney transition bottom kit (Part Number

0270F01119).

1. Disconnect electrical power from the furnace.

2. Disconnect the induced draft blower power leads, flue pipe

and pressure switch tubing.

3. Remove the round cutout from the right side of the wrapper.

4. Remove and save the 4 screws that fasten the induced draft

blower to the flue collector box.

5. Remove and save the 3 screws that hold the chimney

assembly to the induced draft blower.

6. Remove and save the 4 screws that fasten the chimney top to

the chimney bottom.

7. Remove the chimney transition bottom from the transition

bottom kit.

8. Install the chimney top with the 4 screws retained from Step

6 onto the new chimney transition bottom from the transition

bottom kit.

9. Remove the induced draft blower and install the new chimney

assembly to it using the 3 screws retained in Step 5.

10. Rotate the induced draft blower 90 degrees to the right,

feeding the flue pipe through the round cutout from the

outside of the wrapper, and fitting the blower onto the

chimney top assembly.

11. Secure the pipe to the chimney top from the front, top and

bottom using 3 screws. Rotate the induced draft blower to

properly orient the assembly.

NOTE: If the pipe section is less than 18" (45.7 cm), then

attach it directly to the chimney top on 3 sides, and feed it

through the round cutout from the inside of the wrapper.

12. Reattach the induced draft blower using the 4 screws

retained in Step 4. Ensure that the gasket located between

the induced draft blower and collector box is rotated

accordingly.

13. Reconnect the induced draft blower power leads.

NOTE: If the wires are not long enough, pull extra wire from

the wire bundle in the blower compartment.

14. Reconnect the remaining flue pipe and the pressure switch

tubing. Ensure that all wires and the pressure switch tubing

are at least 1" (2.5 cm) from the flue pipe, or any other hot

surface.

15. Reconnect electrical power to the furnace.

NOTE: In a horizontal installation, the air conditioning coil must

be adequately supported by the proper brackets and supports.

Inadequate coil support can result in furnace cabinet distortion

and air leakage.

Category I Furnaces Only—Exterior Masonry

Chimneys

An exterior masonry chimney is defined as a “Masonry chimney

exposed to the outdoors on one or more sides below the roof

line.” The ability to use a clay-lined masonry chimney depends on

a parameter not associated with interior chimneys. This variable

is the geographic location of the installation. Researchers have

discovered that the winter design temperatures have a direct

impact on the suitability of this type of venting. In most situations,

the existing masonry chimneys will require a properly-sized

metallic liner.

Counterflow units are shipped with the induced draft blower

discharging from the top (as viewed for a counterflow installation)

of the furnace.

Vent the furnace in accordance with the National Fuel Gas Code

NFPA 54/ANSI Z223.1—latest edition. In Canada, vent the

furnace in accordance with the National Standard of Canada,

CAN/CSA B149.1 AND CAN/CSA B149.2—latest editions and

amendments.

Minimum Vent

Model Upflow Counterflow

70 4" (10.2 cm) 4" (10.2 cm)

90 4" (10.2 cm) 4" (10.2 cm)

115 5" (12.7 cm) 4" (10.2 cm)

Goodman 67

To prevent possible personal injury or death, due to

asphyxiation, common venting with other manufacturer's

induced draft appliances is not allowed.

WARNING

Goodman 68

Never allow the products of combustion, including carbon

monoxide, to enter the return ductwork or circulation air

supply.

WARNING

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Whirlpool WPIO-369B Instruction Manual Page 9

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