Keystone Boilers and Water Heaters
Page 51
SIZE SIZE SIZE SIZE SIZE SIZE SIZE
ITEM DESCRIPTION KS 399 KS 500 KS 600 KS 750 KS 850
KW 199 KW 285 KW 399 KW 500 KW600 KW750 KW 850
Gas Train Components – See Figure 35
40 Combustion Air Blower KSR300 KSR300 KSR301 KSR301 KSR302 KSR302 KSR302
41 Gas Valve / Venturi KSR303 KSR304 —————
42 Gas Valve — — KSR305 KSR306 KSR307 KSR307 KSR307
43 Gas / Air Venturi — — — KSR308 KSR309 KSR309 KSR309
44 Manual Shut off KSR310 KSR311 KSR311 KSR312 KSR312
(2 for KS600)
44A Manual Shut off — — — KSR310 — KSR311 KSR311
45 Gas Valve Flange Kit — — — KSR313 KSR313 KSR313 KSR313
46 Gas Valve/ Venturi Cork Gasket — — — KSR314 KSR314 KSR314 KSR314
47 Gas Valve O-ring KSR315 KSR315 —————
48 Venturi O-ring — — KSR316 KSR316 KSR316 KSR316 KSR316
49 High Gas Pressure Switch — — — KSR317 KSR318 KSR319 KSR319
50 Low Gas Pressure Switch — — — KSR320 KSR321 KSR322 KSR322
51 Duct / Venturi Transition KSR323 KSR324 — KSR325 KSR326 KSR326 KSR327
52 Gas Supply Pipe KSR328 KSR329 KSR330 KSR331 KSR331 KSR332 KSR332
53 Gas Pipe, 3/4" NPT Formed Nipple — — KSR333 ————
55 Air Inlet Flex Hose KSR334 KSR334 KSR335 KRS336 KSR337 KSR338 KSR338
56 Air Inlet Collector KSR339 KSR339 KSR340 ————
57 Electrical Connector w/ Cable — — KSR341 KSR341 — — —
58 Elbow Adaptor — — KSR342 KSR342 — — —
59 Blower Gasket w/ Fasteners ————KSR343 KSR343 KSR343
Heat Exchanger Components – See Figure 36
60 Heat Exchanger KSR400 KSR401 KSR402 KSR403 KSR404 KSR405 KSR406
62 Low Water Cutoff Switch — — — KSR407 KSR407 KSR407 KSR407
63 Water temp sensor KSR408 KSR408 KSR408 KSR408 KSR408 KSR408 KSR408
64 Duplex water temp sensor KSR409 KSR409 KSR409 KSR409 KSR409 KSR409 KSR409
65 Duplex Stack temp sensor KSR410 KSR411 KSR411 KSR411 KSR411 KSR411 KSR411
66 Pressure relief valve KS (175psi) — — KSR412 KSR412 KSR412 KSR412 KSR412
66 Pressure relief valve KW (125psi)KSR413 KSR413 KSR413 KSR413 KSR413 KSR413 KSR413
67 Air vent KSR414 KSR414 KSR414 KSR414 KSR414 KSR414 KSR414
68 Burner door w/ gaskets KSR415 KSR415 KSR415 KSR415 KSR415 KSR415 KSR415
68A Gaskets-only (burner door) KSR416 KSR416 KSR416 KSR416 KSR416 KSR416 KSR416
69 Burner gasket KSR417 KSR417 KSR417 KSR417 KSR417 KSR417 KSR417
69A Gasket set (burner, ignitor, KSR418 KSR418 KSR418 KSR418 KSR418 KSR418 KSR418
sensor & door gaskets)
70 Front refractory tile KSR419 KSR419 KSR419 KSR419 KSR419 KSR419 KSR419
71 Rear refractory tile KSR420 KSR420 KSR420 KSR420 KSR420 KSR420 KSR420
72 Main burner w/ gasket KSR421 KSR422 KSR423 KSR423 KSR424 KSR425 KSR426
73 Flame sensor w/ gasket KSR427 KSR427 KSR427 KSR427 KSR427 KSR428 KSR428
74 Ignitor w/ gasket KSR429 KSR429 KSR429 KSR429 KSR429 KSR430 KSR430
74A Ignitor gasket KSR431 KSR431 KSR431 KSR431 KSR431 KSR431 KSR431
Ignition cable (not shown) KSR432 KSR432 KSR432 KSR432 KSR432 KSR433 KSR433
74B Screw, ignitor / flame sensor KSR434 KSR434 KSR434 KSR434 KSR434 KSR434 KSR434
74C Flame / sensor gasket KSR435 KSR435 KSR435 KSR435 KSR435 KSR435 KSR435
75 Air/gas Channel KSR436 KSR436 KSR436 KSR437 KSR437 — —
Air Adaptor —————KSR438 KSR438
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