Reznor R8HE Unit Installation Manual User Manual
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TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION .............................. 3
REQUIREMENTS & CODES .............................................. 4
GENERAL INFORMATION ................................................. 5
Before you install this unit ........................................................... 5
Locating the Equipment .............................................................. 5
Heating Load ............................................................................... 5
COMBUSTION AIR & VENTING REQUIREMENTS ........... 5
Vent Termination.......................................................................... 6
CIRCULATING AIR SUPPLY .............................................. 7
Air Ducts ...................................................................................... 7
Unconditioned Spaces ................................................................ 7
Acoustical Duct Work .................................................................. 7
UNIT INSTALLATION ......................................................... 7
Packaging Removal..................................................................... 7
Rigging & Hoisting ....................................................................... 7
Clearances to Combustible Materials ......................................... 8
Ground Level ............................................................................... 8
Rooftop ........................................................................................ 8
Horizontal to Downflow Conversion ............................................ 9
Condensate Drain (Air Conditioning) .......................................... 9
Air Filter Requirements................................................................ 9
Removal of Internal Filter Rack ................................................... 9
Installing Filters in the Internal Filter Rack .................................. 9
Removing Filters from Internal Filter Rack.................................. 9
ELECTRICAL WIRING ........................................................ 11
Pre-Electrical Checklist ............................................................... 11
Grounding .................................................................................... 11
Line Voltage ................................................................................. 11
Unbalanced 3-Phase Supply Voltage ......................................... 12
Thermostat / Low Voltage Connections ...................................... 12
2-Stage Heat / 1-Stage Cool Thermostat ................................ 12
Single Stage Heat / Single Stage Cool Thermostat ................. 12
Heat Anticipator ........................................................................... 13
Cooling Configurations ................................................................ 13
Heating Configurations ................................................................ 13
Blower Speed .............................................................................. 13
Configuring the Fixed Speed Blower ....................................... 13
Selecting Cooling Airflow ......................................................... 13
Selecting Heating Airflow......................................................... 13
Dehumidification Options ............................................................ 14
Optional Furnace Control Board Connections ............................ 14
Electronic Air Cleaner .............................................................. 14
Humidifier ................................................................................ 14
GAS SUPPLY & PIPING ..................................................... 15
Leak Check .................................................................................. 15
High Altitude Conversion - Natural Gas ...................................... 16
LP / Propane Gas Conversion..................................................... 16
START UP & ADJUSTMENTS ........................................... 18
Pre-Start Check List .................................................................... 18
Start-Up Procedure ..................................................................... 18
Air Circulation .......................................................................... 18
Lighting the Appliance ............................................................. 18
Verifying System Heating ........................................................ 19
Verifying & Adjusting Temperature Rise .................................. 19
Gas Supply Pressure Verification & Adjustment ...................... 19
Verifying the Firing Rate of the Appliance ............................... 19
Measuring the Manifold Pressure ............................................ 20
Adjusting the Manifold Pressure .............................................. 20
Removing the Manometer/Pressure Gauge ............................ 20
Verifying Over-Temperature Limit Control Operation ............... 20
Verifying Burner Operation ...................................................... 21
Verifying System Cooling......................................................... 21
OPERATING SEQUENCE .................................................. 21
Heating Mode .............................................................................. 21
Thaw Cycle Start Up / Shutdown ................................................ 22
Blocked Vent / Condensate Disposal Shut Down ....................... 23
Cooling Mode - Single Stage Operation ..................................... 23
De-Humidification Control ........................................................... 23
Fan Mode ..................................................................................... 23
COMPONENT FUNCTIONS ............................................... 23
EQUIPMENT MAINTENANCE ............................................ 24
Heat Exchanger & Burner Maintenance ..................................... 24
Cleaning of Burners ..................................................................... 25
Cooling Mode .............................................................................. 25
Heating Mode .............................................................................. 25
FIGURES & TABLES .......................................................... 26
Figure 8. Unit Dimensions ....................................................... 26
Table 7. Center of Gravity & Shipping Weights ........................ 27
Airflow Information .................................................................... 28
Table 8. Cooling Airflow Settings ............................................. 28
Table 9. Heating Airflow Settings ............................................. 28
Table 10. Blower Performance - 2 & 2.5 Ton ............................ 29
Table 11. Blower Performance - 3 Ton ..................................... 30
Table 12. Blower Performance - 3.5 Ton .................................. 31
Table 13. Blower Performance - 4 & 5 Ton ............................... 32
Gas Information ......................................................................... 33
Table 14. Gas Pipe Capacities ................................................. 33
Table 15. Gas Flow Rates ........................................................ 33
Figure 9. Gas Valve Label ........................................................ 34
Electrical Data ............................................................................ 35
Table 16. Electrical Data. ......................................................... 35
Table 17. Copper Wire Size ..................................................... 35
Table 18. Thermostat Wire Gauge ........................................... 35
Electrical Diagrams .................................................................... 36
Figure 10. Two Stage Heating / Single Stage Cooling
Configuration .......................................................... 36
Figure 11. Fixed Speed Motor Control Board .......................... 36
Figure 12. Ignition Control Board - 624817 ............................. 36
Wiring Diagrams ........................................................................ 37
Figure 13. Single Phase, 2-5 Ton, 208/230V .......................... 37
Figure 14. Three Phase, 3-5 Ton, 208/230V ............................ 38
Figure 15. Three Phase, 3-5 Ton, 460V ................................... 39
Charging Charts ......................................................................... 40
Figure 16. Charging Chart for 2 Ton Units ............................... 40
Figure 17. Charging Chart for 2.5 Ton Units ............................ 40
Figure 18. Charging Chart for 3 Ton Units ............................... 41
Figure 19. Charging Chart for 3.5 Ton Units ............................ 41
Figure 20. Charging Chart for 4 Ton Units ............................... 42
Figure 21. Charging Chart for 5 Ton Units ............................... 42
APPENDIX A - HEAT EXCHANGER CONDENSATE DRAIN
& VENT KIT (HORIZONTAL MOUNT APPLICATIONS) ..... 43
About the Kit ................................................................................ 43
Vent Pipe & Drain Hose Assembly .............................................. 43
Vertical Drain Pit Method ............................................................ 43
Preparing the pit ...................................................................... 44
Percolation Test (Optional) ...................................................... 44
Vertical Drain Pipe Installation ................................................. 44
Horizontal Drain Trench Method ................................................. 44
Preparing the Trench ............................................................... 45
Horizontal Drain Pipe Installation ............................................ 45
Completing the Vent Installation ................................................. 45
APPENDIX B - HEAT EXCHANGER CONDENSATE DRAIN
& VENT KIT (ROOF CURB MOUNT APPLICATIONS) ...... 47
About the Kit ................................................................................ 47
Before Setting unit on the Curb ................................................... 47
Setting the Unit ............................................................................ 48
Completing the Heat Exchanger Condensate Drain Installation 48
Completing the Vent Pipe Installation and Assembly ................. 48