background image

Page 5

WARNING

ELECTRICAL SHOCK, FIRE,

OR EXPLOSION HAZARD.

Failure to follow safety warnings exactly could result
in dangerous operation, serious injury, death or
property damage.
Improper servicing could result in dangerous opera­
tion, serious injury, death, or property damage.
Before servicing, disconnect all electrical power to
furnace.
When servicing controls, label all wires prior to dis­
connecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.

CAUTION

To ensure proper operation, a licensed professional
service  technician (or equivalent) should check the
burner flame and conduct a combustion analysis
annually.

Annually (before heating season) inspect furnace venting
system, vent cap, heat exchanger, and burners for corro­
sion, deterioration, or deposits of debris. Remove any ob­
structions.

Inspect the furnace for obvious signs of deterioration.

Inspect the furnace venting system to make sure it is in
place, physically sound, and without holes, corrosion, or
blockage.

Vent pipe must be clear and free of obstructions and must
slope upward away from the furnace.

Inspect the furnace return air duct connection to ensure
duct is sealed to the furnace and terminates outside the
space containing the furnace.

Inspect the physical support of the furnace to guarantee
that it is sound without sagging, cracks or gaps around
base and it maintains seal between base and support.

Inspect the condensate drain and trap for leaks and cracks.
The drain and trap must also be cleaned and the trap must
be filled with water.

During a seasonal check the service technician will con­
duct a combustion analysis. The technician will also in­
spect the indoor blower, burner flames, electrical connec­
tions and the venting system.

Blower

Check the blower wheel for debris and clean if necessary.
The blower motors are prelubricated for extended bearing
life. No further lubrication is needed.

WARNING

The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal inju­
ry or death.

Electrical

 1 - Check all wiring for loose connections.
 2 - Check for the correct voltage at the furnace (furnace

operating).

 3 - Check amp-draw on the blower motor.

Motor Nameplate__________Actual__________

Service Reminder

Call your Lennox service technician if the unit will not oper­
ate. Before calling, always check the following to be sure
service is required:

 1 - Check that electrical disconnect switches are 

ON.

 2 - Check room thermostat for proper setting.

 3 - Replace any blown fuses or reset circuit breakers.

 4 - Gas valve should be 

ON

.

 5 - Air filter should not be plugged, which will limit air flow.

 6 - Is gas turned on at meter?

 7 - Is manual main shut-off valve open?

Record the model and serial number of the furnace. These
numbers are on the unit nameplate, which is located on the
blower deck below the combustion air inducer.

Serial Number

__________________

Model Number __________________

Содержание ML180UH SERIES

Страница 1: ...use any phone in your building D Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions D If you cannot reach your gas supplier call the fire department D Le...

Страница 2: ...the equipment user Notice to Homeowner This furnace is equipped with safety devices that protect you and your property If one or more of these devices is activated furnace operation will stop If your...

Страница 3: ...into the living space resulting in personal injury or death Your furnace is a gas appliance It is critical that the gas supplied to the unit be completely burned to avoid the pro duction of carbon mo...

Страница 4: ...LD PRESSURE OUTLET PORT INLET PRESSURE PORT MANIFOLD PRESSURE ADJUSTMENT SCREW 9 Replace the upper access panel 10 Turn on all electrical power to to the unit 11 Set the thermostat to desired setting...

Страница 5: ...rt Inspect the condensate drain and trap for leaks and cracks The drain and trap must also be cleaned and the trap must be filled with water During a seasonal check the service technician will con duc...

Страница 6: ...ing Planned Service Pay attention to your furnace Situations can arise be tween annual furnace inspections that may result in unsafe operation For instance items innocently stored next to the furnace...

Страница 7: ...ase see Service and Application Note H 04 9 2 Verify that system total static pressure and airflow set tings are within specific operating parameters 3 Clock gas meter to ensure that the unit is opera...

Отзывы: