Nordyne O4HD-091A-12-FA User Manual

151B0801 R5 3/28/2006
1
OIL-FIRED WARM AIR
FURNACE
O4HD-091A-12-FA AND O4HD-091A-V-F
O4HD-140A-16-FA AND O4HD-140A-V-F
(UPFLOW OR HORIZONTAL MODELS)
NORDYNE
INSTALLATION
INSTRUCTIONS
Read this manual completely before beginning
installation.
Important: These instructions must be kept with
the furnace for future reference.
TABLE OF CONTENTS
INTRODUCTION ....................................................... 3
HEAT LOSS .............................................................. 3
LOCATION OF UNIT................................................. 3
AIR CONDITIONING ................................................. 4
COMBUSTION AIR ................................................... 4
CHIMNEY VENTING ................................................. 5
OIL TANK.................................................................. 7
PIPING INSTALLATION ........................................... 7
ELECTRICAL CONNECTIONS................................. 7
CIRCULATING AIR BLOWER (ECM)....................... 8
FURNACE CONTROLS ............................................ 9
OIL BURNER ............................................................ 9
FURNACE INSTALLATION SET-UP...................... 11
MAINTENANCE AND SERVICE............................. 12
OPERATING INSTRUCTIONS................................ 12
TABLE A-1: BECKETT OIL BURNER SET-UP...... 13
TABLE A-2: DIRECT DRIVE BLOWER SET-UP.... 13
TABLE A-3: DIRECT DRIVE BLOWER
CHARACTERISTICS .............................................. 14
GENERAL DIMENSIONS – O4HD MODELS ......... 15
APPENDIX A: WIRING DIAGRAM O4HD-091A-12-FA
AND O4HD-140A-16-FA ......................................... 16
APPENDIX B: WIRING DIAGRAM O4HD-091A-V-F
AND O4HD-140A-V-F ............................................. 17
WIRING NOTES ...................................................... 18
R7184 DETAILED SEQUENCE OF OPERATION .. 19
TABLE C-1: EFT DETAILED SEQUENCE OF
OPERATION ........................................................... 20
TABLE C-1: EFT DETAILED SEQUENCE OF
OPERATION ........................................................... 21
TABLE C-2: CAD CELL RESISTANCE................. 23
TABLE C-3: R7184 TROUBLESHOOTING ........... 24
TABLE C-4: SYSTEM AND GENERAL
TROUBLESHOOTING ............................................ 26
AIR FILTER LOCATION ......................................... 29
PARTS..................................................................... 30

Nordyne O4HD-091A-12-FA Specifications

General

Brand	Nordyne
Model	O4HD-091A-12-FA
Category	Furnace
BTU Output	72, 000
Efficiency	80%
Voltage	115V
Phase	1
Blower Motor	PSC
Blower Speeds	4
Ignition Type	Direct Spark
Gas Type	Natural Gas
Vent Size	4 inches
Type	Gas
BTU Input	90000
Filter Size	16x25 inches