
100267335 / 2000507928 Rev A
Replacement Parts List
PARTS & SERVICE DEPARTMENT
Nashville, Tennessee
615-889-8900 • Fax: 615-882-2918
parts_team@lochinvar.com
www.Lochinvar.com
Knight
Fire Tube Boilers
KH 55 thru 285
44
3
4
48
49
47
43
42
2
46
52
45
50
41
2000507833 00

GAS TRAIN
22
21
20
19
17
24
18
23
16
13
15
HEAT EXCHANGER
27
28
29
30
31
25
26
14
12
32
33
2000507841 00
36
CONTROL PANEL
35
40
38
7
51
37
10
11
5
ITEM NO.
6
8
2000507836 00
PART NO. LEGACY NO. DESCRIPTION
39
40
9
HEAT EXCHANGER ASSEMBLY
1 100266940 - HEAT EXCHANGER KH 055
1 100266951 - HEAT EXCHANGER KH 085
1 100266953 - HEAT EXCHANGER KH 110
1 100266958 - HEAT EXCHANGER KH 155
1 100266959 - HEAT EXCHANGER KH 199
1 100266971 - HEAT EXCHANGER KH 285
CONTROLS
2 100267999 - DISPLAY BEZEL ASSEMBLY ALL
3 100189277 RLY20136 USER INTERFACE CONTROL ALL
4 100162600 MSC20123 KNOB, FLUTED W/ SKIRT ALL
5 100169476 SWT2006 SWITCH, POWER ON/OFF ALL
6 100209755 RLY20155 LOW VOLTAGE CONNECTION BOARD ALL
7 100266976 - INTEGRATED CONTROL BOARD KH 055
7 100266977 - INTEGRATED CONTROL BOARD KH 085
7 100266978 - INTEGRATED CONTROL BOARD KH 110
7 100266979 - INTEGRATED CONTROL BOARD KH 155
7 100266980 - INTEGRATED CONTROL BOARD KH 199
7 100266982 - INTEGRATED CONTROL BOARD KH 285
7 100266992 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 055
7 100266993 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 085
7 100266994 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 110
7 100266995 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 155
7 100266996 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 199
7 100266997 - INTEGRATED CONTROL BOARD, HIGH ALTITUDE KH 285
8 100170172 TRF20000 TRANSFORMER, 24V, 40VA ALL
9 100170551 TST20023 INLET SENSOR ALL
10 100170550 TST20022 OUTLET SENSOR / HIGH LIMIT ALL
11 100170535 TST20007 FLUE SENSOR ALL
PLEASE HAVE MODEL AND SERIAL NUMBER WHEN ORDERING PARTS
100267335 / 2000507928 Rev A
2 of 4
34
1
2000507840 00
MODEL

ITEM NO.
12 100268028 - GAS VALVE ASSEMBLY KH 055
12 100268029 - GAS VALVE ASSEMBLY KH 085
12 100268030 - GAS VALVE ASSEMBLY KH 110
12 100268031 - GAS VALVE ASSEMBLY KH 155
12 100268032 - GAS VALVE ASSEMBLY KH 199
12 100268033 - GAS VALVE ASSEMBLY KH 285
13 100267005 - SWITCH, GAS VALVE ON/OFF ALL
14 100163054 MSC2515 FLANGE, GAS VALVE W/ O-RING GASKET ALL
15 100266999 - FAN ASSEMBL Y KH 055-155
15 100267000 - FAN ASSEMBL Y KH 199-285
16 100146541 GKT2436 GASKET, FAN ALL
17 100209799 - VENTURI, NAT KH 055-085
17 100209800 - VENTURI, NAT KH 110 & 199
17 100209803 - VENTURI, NAT KH 155
17 100209810 - VENTURI, NAT KH 285
17 100209805 - VENTURI, LP KH 055
17 100209806 - VENTURI, LP KH 085
17 100209807 - VENTURI, LP KH 110
17 100209808 - VENTURI, LP KH 155
17 100209804 - VENTURI, LP KH 199
17 100209811 - VENTURI, LP KH 285
18 100209446 - GASKET, VENTURI KH 055-155
18 100146547 GKT2444 GASKET, VENTURI KH 199-285
19 100138317 CPG20022 COUPLING, AIR INLET KH 055-199
19 100138382 CPG2061 COUPLING, AIR INLET KH 285
20 100266337 - HOSE BARB, BRASS ALL
21 100267010 - AIR INTAKE CONNECTION, 2” x 8” PVC ALL
22 100138380 CPG2059 COUPLING, AIR INLET KH 110-285
23 100209326 BRS20090 UNION ADAPTER ALL
24 100209445 GKT20201 UNION ADAPTER GASKET ALL
25 100165925 PLT30005 IGNITOR W/ GASKET ALL
26 100146549 GKT2449 GASKET, IGNITOR ALL
27 100165930 PLT3022 FLAME SENSOR W/ GASKET ALL
28 100146550 GKT2450 GASKET, FLAME SENSOR ALL
29 100189215 MSC30056 SIGHT GLASS KIT ALL
30 100209436 GKT20184 GASKET, SIGHT GLASS ALL
31 100268111 - HEAT EXCHANGER TOP PLATE ASSEMBLY KH 055-085
31 100268112 - HEAT EXCHANGER TOP PLATE ASSEMBLY KH 110-155
31 100268113 - HEAT EXCHANGER TOP PLATE ASSEMBLY KH 199-285
32 100209441 GKT20197 GASKET, HEAT EXCHANGER TOP PLATE KH 055-085
32 100209437 GKT20185 GASKET, HEAT EXCHANGER TOP PLATE KH 110-155
32 100209435 GKT20183 GASKET, HEAT EXCHANGER TOP PLATE KH 199-285
33 100267965 - BURNER W/ GASKET KH 055-085
33 100267967 - BURNER W/ GASKET KH 110-155
33 100267968 - BURNER W/ GASKET KH 199-285
34 100209440 GKT20196 GASKET, BURNER KH 055-085
34 100209438 GKT20186 GASKET, BURNER KH 110-155
34 100209442 GKT20198 GASKET, BURNER KH 199-285
35 100209419 FIB20191 INSULATION, TOP PLATE KH 055-085
35 100209424 FIB20196 INSULATION, TOP PLATE KH 110-155
35 100209426 FIB20198 INSULATION, TOP PLATE KH 199-285
36 100167442 RLV2030 RELIEF VALVE, 30 PSI ALL
37 100146999 GTP2900 GAUGE, TRIOMETER, 75# PSI ALL
38 100266425 TUB20105 WATER TUBE, OUTLET KH 055-085
38 100266427 TUB20100 WATER TUBE, OUTLET KH 110-155
38 100266422 TUB20096 WATER TUBE, OUTLET KH 199-285
39 100266424 TUB20099 WATER TUBE, INLET KH 055-085
39 100266426 TUB20101 WATER TUBE, INLET KH 110-155
39 100266423 TUB20097 WATER TUBE, INLET KH 199-285
40 100146354 GKT20023 GASKET, WATER TUBE KH 055-155
40 100146372 GKT20051 GASKET, WATER TUBE KH 199-285
41 100209668 MSC20509 CONDENSATE TRAP ASSEMBLY ALL
100267335 / 2000507928 Rev A
PART NO. LEGACY NO. DESCRIPTION
GAS TRAIN
PILOT & BURNER ASSEMBLIES
MISCELLANEOUS
PLEASE HAVE MODEL AND SERIAL NUMBER WHEN ORDERING PARTS
3 of 4
MODEL

ITEM NO.
42 100267403 - HOSE ASSEMBLY, CONDENSATE TRAP KH 055-085
42 100267396 - HOSE ASSEMBLY, CONDENSATE TRAP KH 110-285
43 100166513 PVC20050 FLUE CONNECTION PIPE, 2” CPVC KH 055-085
43 100166514 PVC20051 FLUE CONNECTION PIPE, 3” CPVC KH 110-285
- 100146010 FUS20001 FUSE, TIME DELAY, 0.8 AMP ALL
- 100146012 FUS2001 FUSE, TIME DELAY, 3.15 AMP ALL
- 100146013 FUS2002 FUSE, TIME DELAY, 5 AMP ALL
- 100162948 MSC2232 BIRD SCREEN, 2” PVC KH 055-085
- 100163055 MSC2516 BIRD SCREEN, 3” PVC KH 110-285
- 100170590 TST2044 BULBWELL, 1/4” ALL
- 100170581 TST2032 SENSOR, SYSTEM ALL
- 100170604 TST2311 SENSOR, OUTDOOR AIR ALL
- 100209819 WRE20259 HARNESS, CONNECTION BOARD ALL
- 100172847 WRE20099 HARNESS, FLAME SENSE ELECTRODE ALL
- 100173094 WRE2209 HARNESS, SPARK ELECTRODE ALL
- 100209816 WRE20256 HARNESS, POWER CONTROL ALL
- 100209817 WRE20257 HARNESS, UNIT CONTROL ALL
- 100173104 WRE2229 CABLE, RIBBON ALL
- 100173696 WTR2040 FLOW SWITCH ALL
- 100173646 WTR20009 LOW WATER CUT OFF, MR W/ TEST ALL
- 100157719 KIT3085 KIT , ALARM BELL ALL
- 100267566 - KIT, INSTALL KH 055-085
- 100209658 - KIT, INSTALL KH 110-155
- 100209659 - KIT, INSTALL KH 199-285
- 100157718 KIT3078 KIT, SYSTEM SENSOR ALL
- 100157721 KIT3087 KIT, NEUTRALIZER ALL
- 100268040 - KIT, LP CONVERSION KH 055
- 100268104 - KIT, LP CONVERSION KH 085
- 100268105 - KIT, LP CONVERSION KH 110
- 100268107 - KIT, LP CONVERSION KH 155
- 100268108 - KIT, LP CONVERSION KH 199
- 100268109 - KIT, LP CONVERSION KH 285
- 100157609 KIT30044 KIT, SIDEWALL VENT - 2” KH 055-085
- 100157610 KIT30045 KIT, SIDEWALL VENT - 3” KH 055-285
- 100157611 KIT30046 KIT, SIDEWALL VENT - 4” KH 199-285
- 100267287 - TEE, 2” CPVC W/ ANALYZER PORT KH 055-085
- 100267285 - TEE, 3” CPVC W/ ANALYZER PORT KH 110-285
- 100166349 PUM2002 PUMP KH 055-155
- 100166404 PUM2021 PUMP KH 199-285
44 100268026 - JACKET, OUTER TOP ASSEMBLY ALL
45 100268021 - JACKET, OUTER FRONT ASSEMBLY ALL
46 100268025 - JACKET, OUTER RIGHT ASSEMBLY ALL
47 100268022 - JACKET, OUTER LEFT ASSEMBLY KH 055-085
47 100268023 - JACKET, OUTER LEFT ASSEMBLY KH 110-155
47 100268024 - JACKET, OUTER LEFT ASSEMBLY KH 199-285
48 100209552 JKB60926 WATER OUTLET COVER PANEL ALL
49 100209529 JKB60868 FLUE SENSOR COVER PANEL ALL
50 100209538 JKB60892 CONTROL PANEL COVER ALL
51 100209548 JKB60917 JUNCTION BOX COVER ALL
52 100162622 MSC20156 DOOR HANDLE ALL
- 100162552 MSC20062 DOOR CATCH ALL
- 100162929 MSC2202 DOOR STRIKE ALL
PART NO. LEGACY NO. DESCRIPTION
MISCELLANEOUS
PUMPS
JACKET ASSEMBL Y
MODEL
100267335 / 2000507928 Rev A
PLEASE HAVE MODEL AND SERIAL NUMBER WHEN ORDERING PARTS
4 of 4
©-10/15-Printed in U.S.A.