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SHUTDOWN
INSTRUCTIONS
TURNING OFF GAS TO
FURNACE
CAUTION
Should overheating occur, or the gas supply fail to shut off, shut off the main manual gas valve to the furnace before shutting off the electrical supply.
Set thermostat to the lowest set- ting.
TO GAS
SUPPLY
EXTERNAL MANUAL
SHUTOFF VALVE
GROUND JOINT UNION
MAY BE INSTALLED
INSIDE OR OUTSIDE UNIT
TO GAS
SUPPLY
DROP LEG
GAS VALVE 
TYPICAL GAS PIPING
1.Set thermostat to the lowest setting.
WARNING
Turn off all electrical power to the furnace if service is to be performed.
2.Remove the control access panel.
3.Turn gas control switch to ìOFFî. If gas valve is equipped with a control knob - turn knob clockwise to ìOFFî position.
4.Replace the control access panel.
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VALVE |
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GAS VALVE |
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YOUR FURNACE'S FILTER - WHAT IT DOES
The filter in your furnace takes the lint and dust out of the air that passes through it. This keeps dirt particles from getting into the mov-
ing parts of the furnace, where they could cause serious damage. It also keeps the dirt from circulating through your home.
As the filter continues to collect these particles, it becomes clogged and no longer allows enough air to circulate through the furnace. If this happens, the heat exchangers and blower motor could overheat; a potentially dangerous situation. It is very important to keep the air filter clean! Never operate your furnace without a suitable air filter.
WARNING
When replacing filters DO NOT use a type with excessively high pressure drop. Some high efficiency filters available will cause the furnace to operate improperly and could result in a safety hazard.
FREQUENCY OF
CHECKING FILTERS
Clean or change your furnace's fil- ter at least every three months. If you need to replace a filter, replace it with the same type or contact a qualified service person.
If your home is new, you should check the filter every week for the first four weeks after you begin to use the furnace, and then at least every three weeks after that, espe- cially if the system runs constantly.
4 | Unitary Products Group |
