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Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what
is covered. Keep the warranty certificate in a safe place, so you can find it, if necessary.

Before using this manual, check the serial plate for proper model identification.

Installer

- Affix this manual, the Installation Guide, and Specifications Sheet adjacent to the

appliance.

Owner

- Keep all product literature in a safe place for future reference.

THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY

QUALIFIED, EXPERIENCED TECHNICIANS ONLY.

WARNING

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the furnace
before shutting off the electrical supply.

WARNING

To avoid death, personal injury or property damage, do not use this furnace if any part of the furnace has been
under water. Immediately call a qualified service technician to inspect the furnace and to replace any part of the
control system and any gas control having been under water.

Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what
is covered. Keep the warranty certificate in a safe place, so you can find it, if necessary.

Before using this manual, check the serial plate for proper model identification.

Installer

- Affix this manual, the Installation Guide, and Specifications Sheet adjacent to the

appliance.

Owner

- Keep all product literature in a safe place for future reference.

THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY

QUALIFIED, EXPERIENCED TECHNICIANS ONLY.

WARNING

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the furnace
before shutting off the electrical supply.

WARNING

To avoid death, personal injury or property damage, do not use this furnace if any part of the furnace has been
under water. Immediately call a qualified service technician to inspect the furnace and to replace any part of the
control system and any gas control having been under water.

Summary of Contents for XF8S

Page 1: ...tained Take time to familiarize yourself with the information concerning furnace installation features operation and maintenance contained within this manual 80 TWO STAGE GAS FIRED FURNACE User s Info...

Page 2: ...the customer This includes all safety precautions and related items Prior to actual installation thoroughly familiarize yourself with this Instruction Manual Pay special attention to all safety warnin...

Page 3: ...the furnace and to replace any part of the control system and any gas control having been under water Your warranty certificate is also supplied with the unit Read the warranty carefully and note what...

Page 4: ...use can shorten the life of the furnace and create hazards for you the homeowner General Information Unit Location 1 The furnace area and the vicinity of any other gas ap pliances must be kept clear...

Page 5: ...home and is warmed to 72 F the relative humidity will drop to 6 very dry if no more moisture is added General Information Check the burner flames for 1 Good adjustment 2 Stable soft and blue 3 Not cur...

Page 6: ...F 20 40 10 F 15 35 0 F 10 30 10 F 5 25 20 F 5 20 30 F 3 18 Table 1 For Propane LP Installations Only For furnaces operating on propane please review the fol lowing warnings before use WARNING To avoid...

Page 7: ...ical components are contained in both compartments To avoid electrical shock injury or death do not remove any internal compartment covers Contact a qualified servicer at once if an abnormal condition...

Page 8: ...ute wait ing period in Step 7 follow the instructions on the front page of this manual If gas can not be smelled Turn the gas control knob or lever counterclockwise to the ON position The knob or leve...

Page 9: ...reset temperature activated sensor This limit guards against overheating as a result of insufficient conditioned air passing over the heat exchanger Disconnect electrical power prior to removing the...

Page 10: ...t is made to engage the roll out protection device and turn the furnace back on Resetting From Lockout Furnace lockout is characterized by a non functioning furnace circulator blower may be running co...

Page 11: ...sonal injury due to electrical shock disconnect the electrical power before performing any maintenance If filter replacement becomes necessary it must be replaced with a filter of the same type and si...

Page 12: ...e same type and size To reinstall filter follow instructions included with external filter rack kit BE SURE AIRFLOW DIRECTION ARROW POINTS TOWARDS THE BLOWER When the filter is located in the bottom o...

Page 13: ...inspect the appliance and to replace any part of the control system and any gas control which has been underwater 1 STOP Read the safety information above on this label 2 Set the thermostat to lowest...

Page 14: ...ial Number of the unit must be supplied These numbers are recorded on the nameplate of the furnace For convenience record this information here MODEL NUMBER _ _ _ _ _ _ _ _ _ _ _ MANUFACTURING NUMBER...

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