Daikin DM80S - Page 2

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ELECTRICAL CONNECTIONS.....................................................14
Wiring Harness ......................................................14
115 Volt Line Connections ......................................14
Fossil Fuel Applications.........................................14
Junction Box Relocation .........................................14
24 Volt Thermostat Wiring .....................................15
DM80HE Furnace
with 2-Stage Condenser Field Wiring.................15
Setting the Heat Anticipator ...................................16
115 Volt Line Connection of Accessories ...............16
Electronic Air Cleaner.............................................16
(DM80HE, DD80HS & DM80HS models only) .....16
24 Vac Humidifier ...................................................16
GAS SUPPLY AND PIPING ........................................................16
High Altitude Derate ...............................................17
Propane Gas Conversion ........................................17
Gas Piping Connections .........................................17
Upflow Installations...............................................18
Counterflow Installations ......................................18
Gas Piping Checks ..................................................18
Propane Gas Tanks and Piping...............................19
CIRCULATING AIR AND FILTERS ...............................................20
Ductwork - Air Flow ................................................20
Filters - Read This Section Before
Installing The Return Air Ductwork ....................20
Upright Installations..............................................20
Circulation Air Filters.............................................20
Horizontal Installations.........................................20
SEQUENCE OF OPERATION
(INTEGRATED IGNITION CONTROL) ......................................22
Power Up.................................................................22
Heating Mode ..........................................................22
(Mode DIP switch is set to “1 STG” position) .....22
(Mode DIP Switch is set to “2 STG” position) .....22
Cooling Mode..........................................................22
Fan Only Mode........................................................23
START-UP PROCEDURE AND ADJUSTMENT ..............................23
Furnace Operation..................................................23
Furnace Start-up .....................................................23
Furnace Shutdown ..................................................23
Gas Supply Pressure Measurement .......................23
Gas Manifold Pressure Measurement
and Adjustment ................................................... 25
Gas Input Rate Measurement (Natural Gas Only) .27
Temperature Rise ....................................................27
Circulator Blower Speed Adjustment .....................27
Circulator Blower Fan Timing Adjustment.............28
Setting Furnace Operating Mode (DD80HS,
DM80HS and DM80HE models only) ..................28
OPERATIONAL CHECKS ............................................................28
Checking Duct Static ...............................................28
Burner Flame...........................................................29
SAFETY CIRCUIT DESCRIPTION ................................................29
General....................................................................29
Integrated Control Module .....................................29
Primary Limit ..........................................................29
Auxiliary Limit ........................................................29
Rollout Limits..........................................................29
Pressure Switches...................................................29
Flame Sensor...........................................................30
TROUBLESHOOTING ...............................................................30
Electrostatic Discharge (ESD) Precautions ............30
Diagnostic Chart.....................................................30
Fault Recall (Furnaces equipped
with PCBBF132 Control Board only)...................30
Resetting From Lockout ...........................................30
MAINTENANCE ........................................................................30
Annual inspection ..................................................30
Filters......................................................................31
Filter Maintenance .................................................31
Filter Removal.........................................................31
Induced Draft and Circulator Blower Motors........31
Flame Sensor (Qualified Servicer Only).................31
Igniter (Qualified Servicer Only) ............................31
Burners....................................................................31
CLEANING (QUALIFIED SERVICER ONLY) ..................................31
BEFORE LEAVING AN INSTALLATION ........................................32
REPAIR AND REPLACEMENT PARTS ..........................................32
Component ID .........................................................33
Troubleshooting Chart............................................35
APPENDIX ...............................................................................35
TROUBLESHOOTING CHART
PCBBF134 & PCBBF132 CONTROL BOARDS .. 35
BLOWER PERFORMANCE DATA ...............................................38
DM80(H,S)S .............................................................38
DD80(H,S)S ..............................................................39
DM80HE ..................................................................40
DM80SS / DD80SS Wiring Diagram ......................................41
DM80HE Wiring Diagram, Honeywell Gas Valve..................42
DM80HS / DD80HS Wiring Diagram ,
Honeywell Gas Valve...............................................43