York International P3HMX12F08001, Installation Instructions Manual

1 

OIL-FIRED WARM AIR 

FURNACE 

P3HMX12F08001   P3HMX14F10001 

P3HMX20F12001 

(Upflow or Horizontal Models) 

P3LBX12F08001   P3LBX14F12001 

(Lowboy Models)

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 ....................................................... 2

HEAT LOSS .............................................................. 2

LOCATION OF UNIT................................................. 2

AIR CONDITIONING ................................................. 4

COMBUSTION AIR ................................................... 4

CHIMNEY VENTING ................................................. 4

OIL TANK.................................................................. 6

PIPING INSTALLATION ........................................... 6

ELECTRICAL CONNECTIONS ................................ 6

CIRCULATING AIR BLOWER .................................. 7

FURNACE CONTROLS ............................................ 7

OIL BURNER ............................................................ 8

FURNACE INSTALLATION SET-UP........................ 9

MAINTENANCE AND SERVICE............................. 10

OPERATING INSTRUCTIONS ............................... 10

TABLE A-1: BECKETT OIL BURNER SET-UP...... 11

TABLE A-2: DIRECT DRIVE BLOWER SET-UP.... 11

TABLE A-3: DIRECT DRIVE BLOWER 
CHARACTERISTICS .............................................. 12

GENERAL DIMENSIONS – P3HMX MODELS ....... 14

GENERAL DIMENSIONS – P3LBX MODELS........ 15

APPENDIX A: WIRING DIAGRAM ......................... 16

WIRING NOTES ...................................................... 17

R7184 DETAILED SEQUENCE OF OPERATION .. 18

TABLE C-1:  EFT DETAILED SEQUENCE OF 
OPERATION ........................................................... 19

TABLE C-1:  EFT DETAILED SEQUENCE OF 
OPERATION ........................................................... 20

TABLE C-2:  CAD CELL RESISTANCE................. 22

TABLE C-3:  R7184 TROUBLESHOOTING........... 23

TABLE C-4:  SYSTEM AND GENERAL 
TROUBLESHOOTING ............................................ 25

AIR FILTER LOCATIONS ....................................... 28

REPAIR PART LIST – P3HMX12F08001, 
P3HMX14F10001 & P3HMX20F12001 ................... 29

REPAIR PART LIST – P3LBX12F08001A & 
P3LBX14F12001A .................................................. 30

REPAIR PART LIST – P3HMX12F08001 ............... 31

REPLACEMENT PART CONTACT INFORMATION32