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Ref. Description KC-50 KC-100
1 Gas Valve-RS7200 Dern 660520 660520
2 Combustion Blower 651307 651307
3 Electronic Control-Ram H1MC5-02 651308 651308
4 Circulator Pump-Taco 007 660561 660561
4A Circulator Pump-Grundfos UP15-42F 660562 660562
4B Circulator Pump-B&G NRF-22 660564 660564
5 Air Pressure Switch 651302 651302
6 Low Water Cutoff 651301 651301
6A Low Water Cutoff Clamp 650207 650207
7 Water High Limit 650564 650564
8 High Limit Well 410674 410674
9 Secondary High Limit (Optional) 660524 660524
10 Temperature/Pressure Gauge 910373061 910373061
11 Pressure Relief Valve 650550 650550
12 Automatic Air Vent 651303 651303
13 Blower Connector Hose 660510150 660510225
14* Hot Surface Ignitor 660720 660720
14A* Hot Surface Ignitor Hold-down 660276 660276
14B*
Ignitor Guide Assembly 665038 665038
14C* Ignitor Perforated Shield 660721
660721
15 Flame Detector 660501 660501
15A Flame Detector Bracket
660161 660161
15B Flame Detector Seal 660439 660439
16 LED Indicator Panel 650559 650559
17 Silicone Tubing 1/8 I.D. x 26" Long 660598026 660598026
18 Expansion Tank 650536 650539
19 Expansion Tank Connector Tube 651713 651713
20 Water Outlet Manifold 650401 650401
21 Air Pressure Service Fitting 660529 660529
22 Gas Pressure Service Fitting 660530 660530
23 Clear Tubing 1/8 I.D. x 8" Long 660531 660531
24 Clear Tubing 3/16 I.D. x 8" Long 660532 660532
27 Electronic Board Shield 650961 650961
28 Blower Optical Board 650560 650560
29 Safety Circuit 9 Pin Harness 651320 651320
30 Power Supply 4 Pin Harness 651321 651321
31 Optical Board Harness 651324 651324
32 LED Board Harness 651323 651323
33 Air Filter 6" x 11" 651306 651306
34 1/4 Turn Fastener 650541 650541
PRODIGY 21
®
Gas-fired • Direct Vent • Cast-iron • Hot water boilers
BOILER REPLACEMENT PARTS LIST
For Models KC-50 and KC-100
When ordering replacement parts, specify the boiler model number, serial number and gas by name (natural or
propane). Parts are available from your local Slant/Fin heating contractor, wholesaler or Slant/Fin Corporation.
This parts list must be left with owner, hung on or adjacent to
the boiler. Owner should retain parts list for future reference.
PUBLICATION NO. P-10PL-A
Part No. 65-2103
Printed in U.S.A. 600
Rev. A
*Special Note on Reference Item #14:This Hot Surface Ignitor part number is only for use with Prodigy 21 boilers which incorporate an
air-cooled ignitor guide and perf
orated shield. Refer to identification label above ignitor on boiler.