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Caution, Shutting down your furnace, Performing routine maintenance – Carrier 58MVC User Manual

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12. Set your thermostat to the temperature that satisfies your

comfort requirements.

SUGGESTION: Setting the thermostat back a few degrees
and compensating for the difference with warmer clothing
can make a big difference in your fuel consumption. The few

degrees at the top of your thermostat “comfort level” are the
most costly degrees to obtain.

When the room temperature drops below the temperature selected

on the thermostat, the furnace will switch on automatically.
When the room temperature reaches the temperature selected on

the thermostat, the furnace will be switched off automatically.
Some thermostats have a FAN mode with 2 selections: AUTO

and ON. When set on AUTO, the furnace blower cycles on and

off. In the ON mode, the furnace blower runs continuously.
Continuous fan keeps the temperature level in your home more

evenly balanced. It also permits the indoor air to be continuously
filtered. With the unique feature Fan On Plust

, the blower speed

can be increased or decreased if desired due to change of seasons,

large gatherings in your home, etc. Simply change your FAN
from ON to OFF for 1 to 3 seconds (or AUTO depending on

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

A08013

Fig. 16 -- Lowest Temperature Setting

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:

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

A04150

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.

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).

CAUTION

!

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: