J801X Installation Manual

2
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION .........................3
REQUIREMENTS & CODES .........................................3
Combustion Air Quality .............................................. 4
Clearances to Combustible Materials ........................ 4
Heating Load .............................................................4
Installation in a Garage ..............................................4
Operation of Furnace During Construction ................ 5
COMBUSTION AIR & VENTING REQUIREMENTS .....5
Installation In A Confined Space ...............................6
Air From Inside ........................................................6
Outdoor Air from a Crawl Space or Vented Attic .....6
Outdoor Air Using Vertical Ducts .............................6
Outdoor Air Using Horizontal Ducts ......................... 6
Air Directly Through An Exterior Wall ......................7
Alternate Method of Providing Air from Outside: .....7
Installation In An Unconfined Space ..........................7
Category I Venting ..................................................... 8
Flexible Vent Systems ...............................................8
CIRCULATING AIR REQUIREMENTS ..........................9
Plenums & Air Ducts ..................................................9
Return Air Connections .............................................9
Upflow & Horizontal Furnaces .................................9
Supply Air Connections .............................................9
Acoustical Treatments ...............................................10
FURNACE INSTALLATION ...........................................10
About The Furnace .................................................... 10
Before You Install the Furnace ..................................10
Locating the Furnace ................................................. 10
Upflow Furnaces ........................................................10
Horizontal Furnaces ..................................................11
Pressure Switch Tubing .............................................11
Bottom Panel Removal .............................................. 11
GAS SUPPLY & PIPING ................................................12
Alternate Bottom Panel Removal .............................12
Leak Check ................................................................13
High Altitude Application ............................................13
ELECTRICAL WIRING ..................................................14
Line Voltage Wiring ...................................................14
Grounding .................................................................. 14
Thermostat / Low Voltage Connections .....................14
Heat Anticipator .........................................................15
START-UP & ADJUSTMENTS ...................................... 15
Pre-Start Check List ..................................................15
Start-up Procedures ..................................................15
Verifying & Adjusting Input Rate ................................ 15
Verifying & Adjusting Temperature Rise ....................16
Verifying Burner Operation ........................................16
Verify Operation of the Supply Air Limit Switch .........16
OPERATING SEQUENCE .............................................16
Heating Cycle ............................................................16
Cooling Cycle ............................................................17
Fan Mode ..................................................................17
MAINTENANCE .............................................................17
TROUBLESHOOTING ...................................................18
FURNACE COMPONENTS ...........................................19
FIGURES & TABLES .....................................................20
Figure 18. Furnace Dimensions ...............................20
Airflow Data ...............................................................21
Table 3. Blower Data for J801X055A Models .......... 21
Table 4. Blower Data for J801X070B Models .......... 22
Table 5. Blower Data for J801X100C Models ..........23
Electrical Information .................................................24
Figure 19. Wiring Diagram ....................................... 24
Figure 20. Ladder Diagram ...................................... 25
Gas Information .........................................................26
Table 6. Gas Flow Rates .........................................26
Table 7. Gas Pipe Capacities ..................................26
Table 8. Natural Gas Heating Values ......................27
Table 9. High Altitude Deration Chart for Natural
Gas - High Heating Value ..........................27
Table 10. High Altitude Deration Chart for Natural
Gas - Low Heating Value ........................27
INSTALLATION CHECKLIST ........................................28
REPLACEMENT PARTS ...............................................28