Replacement Parts List
www.WaterHeaterParts.com
A. O. Smith Replacement Parts
23
Master Pack Tubs: Tankless Commercial
Tankless Commercial Models 520, 710, 910, 320
Tub Kit Number: 9009058005
NEW Part Number: 100233297
Part
Number
NEW Part
Number
Description
Qty
In Tub
Part
Number
NEW Part
Number
Description
Qty
In Tub
319143-053 100074238 Exhaust Fan Motor, 520 1 319143-143 100074328 Nylon Clamp 2
319143-043 100074228 Fan Motor 310, 510 1 319143-075 100074260 O-Ring, Jaso 1016, EPDM 2
319143-035 100074220 Flame Rod 310, 510 2 319143-099 100074284 O-Ring, Jaso 1017, EPDM 2
319143-092 100074277 Flow Sensor 1 320273-644 100076550 O-Ring, P12, FKM 6
319143-140 100074325 Fuse Box 2 320273-345 100076306 O-Ring, P14, FKM 3
319143-031 100074216 Gasket, All 2 320273-346 100076307 O-Ring, P15, FKM 2
319143-032 100074217 Gasket, All 2 320273-347 100076308 O-Ring, P16, FKM 14
319143-034 100074219 Gasket, All 5 319143-349 100074532 O-Ring, P18, EPDM 2
319143-044 100074229 Gasket, All 2 319143-350 100074533 O-Ring, P18, NBR 4
319143-045 100074230 Gasket, All 2 319143-057 100074242 O-Ring, P20 2
319143-301 100074485 Gasket, Burner Holder 2 320273-645 100076551 O-Ring, P25, FKM 2
319143-336 100074520 Gasket, Manifold B 2 319143-351 100074534 O-Ring, P26, NBR 2
319143-197 100074381 Water Filter Plug 2 320273-519 100076478 O-Ring, P3, FKM 2
319143-072 100074257 Water Inlet Filter 2 320273-342 100076303 O-Ring, P4, FKM 6
319143-095 100074280 High Limit Switch 2 319143-196 100074380 PCB 320 2
319143-052 100074237 Igniter 2 319143-126 100074311 PCB 520 1
319143-345 100074529 Igniter Cable 710 2 319143-267 100074451 PCB MC50 1
319143-039 100074224 Igniter Cable Assembly 2 319143-279 100074463 ASME PCB 710 1
319143-037 100074222 Igniter Rod 310, 510 2 319143-266 100074450 ASME PCB 910 1
9007603005 100112155 Remote Controller 1 319143-127 100074312 Transformer 520, 910, 320 1
319143-284 100074468 Surge Box 2 319143-309 100074493 Transformer 710 1
319143-131 100074316 Thermister Exhaust 2 319143-086 100074271 Water Control Valve 1
319143-085 100074270 Thermister IN 510 2 319143-227 100074411 Ground Fault Circuit Interrupter 2
319143-081 100074266 Thermister Mixing 2 319143-076 100074261 Heater Plate 2
319143-190 100074374 Thermister Mixing 2 319143-104 100074289 High Limit Exhaust Switch, DV 1
319143-096 100074281 Thermister OUT 510 1