Shutting Down Your Furnace, Filtering OUT Trouble

your thermostat), and then return to ON. The blower will switch to the next higher speed. There are at least 3 speeds to choose from. If the blower is running on its highest speed, a request to change will direct the blower to return to its lowest speed.

If you own an Evolution Control, simply push the “fan” button to change the fan speed.

SHUTTING DOWN YOUR FURNACE

Should you ever need to shut down your furnace for service or maintenance, you will need to turn the furnace off. The following procedures must be followed:

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Fig. 16 - Lowest Temperature Setting

1.Set your room thermostat to the lowest temperature setting. (See Fig. 16.)

2.Turn off electrical supply to the furnace. (See Fig. 17.)

3.Remove main furnace door. (See Fig. 10.)

4.Turn the switch on the gas control to the OFF position. (See Fig. 18.)

A92185

Fig. 17 - Turn Off Electrical Supply

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Fig. 18 - Control Switch to OFF

5.Replace the main furnace door. (See Fig. 13.)

6.If the furnace is being shut down because of a malfunction, call your dealer as soon as possible.

!CAUTION

UNIT AND PROPERTY DAMAGE

Failure to follow this caution may result in damage to the furnace and other property damage.

Furnace is not to be installed, operated, and then turned off and left turned off in an unoccupied structure during winter. (See “Heading South for the Winter” procedures in maintenance section on page 12).

PERFORMING ROUTINE

MAINTENANCE

NOTE: The qualified installer or agency must use only factory-authorized replacement parts, kits, and accessories when modifying this product.

Installing and servicing heating equipment can be hazardous due to gas and electrical components.

Only trained and qualified personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters.

All other operations must be performed by trained and qualified service agency personnel. Observe safety precautions in this manual, on tags, and on labels attached to the furnace, and other safety precautions that may apply.

With proper maintenance and care, your furnace will operate economically and dependably. Instructions for basic maintenance are found on this and the following pages. However, before beginning maintenance, follow these safety precautions:

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury/death.

Turn off electrical power supply to your furnace before removing the access doors to service or perform maintenance.

!CAUTION

CUT HAZARD

Failure to follow this caution may result in minor personal injury.

Although special care has been taken to minimize sharp edges, be extremely careful when handling parts or reaching into the furnace.

FILTERING OUT TROUBLE

!CAUTION

UNIT PERFORMANCE HAZARD

Failure to follow this caution may result in product damage.

Never operate your furnace without a filter in place. Doing so may damage the furnace blower motor. An accumulation of dust and lint on internal parts of your furnace can cause a loss of efficiency.

A dirty air filter will cause a loss of airflow in your duct system. When excessive loss of airflow occurs, the furnace may cycle on its safety controls. If this condition is left unattended, the furnace

355CAV specifications

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