The first (Kit #1) has a single sense electrode (one wire that goes to the electrode, applicable to S/N above 920500001), the second (Kit #2) has a dual sense electrode (two wires that go to the electrode, applicable to S/N below 920500001). Please verify which kit is applicable to your furnace prior to ordering
Tune-Up Kit #1 Contents: (links in blue)
Tune-Up Kit #2 Contents: (links in blue)
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Suburban Furnace NT34SP Exploded Parts View Links and Downloads
Item# 3 Bottom Duct Adapter Gasket
Item# 7 Thermostat, White 161154
Item# 7 Thermostat, Black 161210
Item# 10 Electrode, Single Sense 231933, Above S/N 920500001
Item# 10 Electrode, Dual Sense 230956, Below S/N 920500001 (New P# 525019)
Item# 12 Burner Access Door 030764
Item# 13 Electrode / Burner Door Gasket Kit 071076 (New P# 525011)
Item# 18 Electrode / Burner Door Gasket Kit 071076 (New P# 525011)
Item# 33 On / Off Switch 232351
Item# 35 Module Board (Ignitor Board) 521099
Item# 38 Module Board Insulator 070538
Item# 42 Vent Cap & Exhaust Tube Assembly 260573
Item# 43 Intake Tube Assembly 050906
Item# 48 Burner Assembly 010701
Item# 50 Manifold Gasket 070408
Item# 60 Gas Fitting 170374 (New P# 525025)
Item# 61 Room Air Wheel 350113
Item# 65 Sail Switch 230509 (New P# 233356)
Item# 72 Crossover Tube Gasket 070385
Item# 75 OEM Motor, 12VDC, 231208
Item# 75 After-Market Motor, 12VDC, 231208MC
Item# 77 Combustion Air Housing Assembly 390410BK NLA
Item# 79 Combustion Air Wheel 350110
Item# 81 Combustion Air Housing Gasket 070386
Item# 82 Combustion Air Housing Assembly 390424