ICP N9MP2 - 1. Safe Installation Requirements; Safety Rules

Service Manual
Single Stage Multi Position Furnace
TABLE OF CONTENTS
1. INTRODUCTION 2............................................................
2. UNIT IDENTIFICATION 2.....................................................
3. FURNACE THEORY OF OPERATION 3........................................
4. ELECTRICAL SUPPLY 4......................................................
5. INTERLOCK SWITCH 5......................................................
6. GAS SUPPLY 5..............................................................
7. BURNERS 7................................................................
8. L.P. PRESSURE SWITCH 7...................................................
9. HIGH ALTITUDE OPERATION 7...............................................
10. CHECKING TEMPERATURE RISE 8..........................................
11. ROOM THERMOSTATS 8....................................................
12. CONTROL WIRING 9.......................................................
13. TWINNING KITS 10..........................................................
14. LIMIT SWITCHES 10.........................................................
15. PRESSURE SWITCHES 12...................................................
16. VENT/COMBUSTION AIR PIPING 14..........................................
17. STANDARD VENT TERMINATION 14..........................................
18. CONCENTRIC VENT TERMINATION 16........................................
19. EXHAUST BLOWER 17......................................................
20. CONDENSATE DRAIN TRAP 17...............................................
21. HONEYWELL ST9160B FAN TIMER/FURNACE CONTROL 18....................
22. ST9160B TESTING SEQUENCE 19............................................
23. ST9160B -- UNIQUE CONTROL FUNCTIONS/RESPONSES 19...................
24. HONEYWELL SV9541M GAS VALVE/IGNITION SYSTEM 20.....................
25. HONEYWELL SV9541M SYSTEM OPERATION 20..............................
26. CHECKING FLAME CURRENT 21.............................................
27. CAPACITORS 22............................................................
28. BLOWER ASSEMBLY 22.....................................................
29. BLOWER ROTATION 23......................................................
30. HEAT EXCHANGER REMOVAL/REPLACEMENT 44.............................
SV9541M “SMART VALVE” -- Sequence of Operation 45.............................
SV9541M “SMART VALVE” -- Trouble shooting 47...................................
SV9541M “SMART VALVE” -- Electrical Variation 49.................................
WIRING DIAGRAM 50...........................................................
TECHNICAL SER VICE DATA (N9MP1 or 2) 52......................................
TECHNICAL SERVICE DATA (*9MPD/A1) 54......................................
TECHNICAL SERVICE DATA (*9MPD/A2) 55......................................
BLOWER PERFORMANCE DATA (N9MP1 or 2 & *9MPD) 56.........................
APPENDIX OF HELPFUL INFORMATION 57.......................................