Universal H-Series Low NOx - Hayward

Universal H-Series Low NOx 

REPLACEMENT PARTS 

Parts Diagram: H150FD, H200FD, H250FD, H300FD, H350FD, H400FD 

2 

8 

28 29 

32 

5 

1 

14 

13 

12 

Heating 

4 

10 

6 

33 

9 

3 

11 

7 

26 

17 16 18 

15 

34 

22 25 

20 

24 

25 

19 

36 

37 

41 

38 

43 

44 

21 23 

24 

27 

31 

35 40 

39 

42 

30

Universal H-Series Low NOx 

REPLACEMENT PARTS 

Parts Listing: H150FD, H200FD, H250FD, H300FD, H350FD, H400FD 

Ref. Ref. Ref. 

No. Part No. Description No. Part No. Description No. Part No. Description 

1 FDXLJKT1150 Jacket Top and Flue Cover – H150FD 



1 FDXLJKT1250A Jacket Top, Gray, ASME – H250FD 




1 FDXLJKT1400A Jacket Top, Gray, ASME – H400FD 

2 FDXLTFC1150 Top/Flue Cover – H150FD 



2 FDXLTFC1250A Top Flue Cover, Gray, ASME – H250FD 




2 FDXLTFC1400A Top Flue Cover, Gray, ASME – H400FD 

3 FDXLFAD1150 Front Access Door Assembly – H150FD 



3 FDXLFAD1250A Front Door Assembly, Gray, ASME – 

H250FD 




3 FDXLFAD1400A Front Door Assembly, Gray, ASME – H400FD 

4 FDXLRAD1150 Rear Access Door Assembly – H150FD 



4 FDXLRAD1250A Rear Door Assembly, Gray, ASME – H250FD 




4 FDXLRAD1400A Rear Door Assembly, Gray, ASME – H400FD 

5 FDXLTFP1150 Top and Front Panel – H150FD 



5 FDXLTFP1250A Top Front Panel, Gray, ASME – H250FD 




5 FDXLTFP1400A Top Front Panel, Gray, ASME – H400FD 

6 FDXLUEC1930 Upper End Cap – FD 

7 FDXLLEC1930 Lower End Cap – FD 

8 FDXLLTP1930 Left Trim Panel Kit 

9 FDXLRTP1930 Right Trim Panel Kit 

10 FDXLLCB1930* Left Connection Box – FD 

10 FDXLRCB1930* Right Connection Box – FD 

10 FDXLLJC1930 Junction Box Cover, Left 

10 FDXLRJC1930 Junction Box Cover, Right 

11 FDXLPBL1930 Base Leg – FD 

12 FDXLFCS1930 Flue Collector Side Panel 

13 FDXLRGK1151 † Rain Guard Assembly – H150FD 






14 FDXLHBP1150 Heat Barrier Panel – H150FD 






15 FDXLBBN1150 Blower Inlet Baffle – H150FD 






16 FDXLIAC1930 Ignitor Access Cover 

17 FDXLGSV0001 Gas Valve Natural Gas – FD 

17 FDXLGSV0002 Gas Valve Propane Gas – FD 

18 FDXLBON1930 Burner Orifice Kit Natural Gas – FD 

18 FDXLBOP1930 Burner Orifice Kit Propane Gas – FD 

19 FDXLMAN1150 Gas Manifold – H150FD 

19 FDXLGCK1150NP Conversion Kit, NA to LP, Quick-Change – 

H150FD 

19 FDXLGCK1150PN Conversion Kit, LP to NA, Quick-Change – 

H150FD 



H200FD 


H200FD 



H250FD 


H250FD 



H300FD 


H300FD 



H350FD 


H350FD 



19 H400FD 


H400FD 

20 FDXLBWR1930 Combustion Blower – FD 

21 FDXLBVS1930 Blower Vacuum Switch 

22 FDXLICB1930 Integrated Control Board – FD 

23 FDXLFWP1930 Field Wiring Panel – FD 

24 FDXLIGN1930 Ignitor – FD 

25 IDXLFLS1930 Flame Sensor 

26 IDXL2TRF1930 Transformer 

27 FDXLWPS1930 Water Pressure Switch 

28 IDXL2DB1930 Display Board Only 

29 FDXLBKP1930 Bezel and Keypad Assembly, Taupe 

29 FDXLBKP1931 Bezel and Keypad Assembly, Blue 

30 FDXLHLI1930 High Limit 135°F 

31 FDXLTER1930 Thermistor 

32 FDXLGSK1932 Gasket, Bezel/Top – FD 

33 FDXLGSK1934 Gasket, CC Front/Air Box – FD All Models 

34 FDXLHXA1150 Heat Exchanger Assembly – H150FD 



34 FDXLHXA1250A Heat Exchanger Assembly, ASME – H250FD 




34 FDXLHXA1400A Heat Exchanger Assembly, ASME – H400FD 

35 FDXLFHA1930 Header Assembly 

36 FDXLHDW1930 Header Hardware Kit 

37 FDXLHMB1930 Header Mounting Base Kit 

38 FDXLBPK1930 Bypass Cartridge Kit 

39 CHXPLG1930 3/4" NPT Brass Plug 

40 FDXLFHA1930 Header Assembly 

41 FDXLCRN1930 Header Cartridge Retaining Nut 

42 SPX4000FG Drain Plug with Gasket 

43 SPX3200UNKIT Union Kit 

44 SPX3200UG Union Gasket (Pack of 2) 

NOT SHOWN: 

— FDXLBRN1930 Burner 

— SPX3200UG Union Gasket (Pack of 2) 

— FDXLFSK1930 Fuse Service Kit – FD 

— FDXLCBC1930* Control Box Cover Assembly 

— FDXLGSK1930 Gasket Kit – Air Side (all models) 

includes: 

Gasket, Blower Mounting 

Gasket, Ignitor Cover 

Gasket, Cover/Air Box Front 

Gasket, Manifold/Air Box 

— FDXLGSK1931 Gasket Kit – Exhaust Side (all models) 

NOTES: *Used only on Heaters made before 9/9/08, serial #21130809100177001 **Used only on Heaters made after 9/9/08, serial #21130809100177001 

†Used only on heaters made after 5/11/2010, serial #21130005101018001 

includes: 

Gasket, Flue Collector Side 

Gasket, Rain Guard Side 

Gasket, Rain Guard Bottom Side 

Gasket, Flue Collector Top 

Gasket, Rain Guard Front and Rear 

Gasket, Rain Guard Bottom Front and Rear 

— FDXLGSK1933 Insulation, Return Side Tube Sheet – FD 

— FDXLUNK1930A ASME Union Flange Kit 

(includes Flange Fittings, Bolts, Gaskets) 

— FDXLDRV1930A Drain Valve, ASME 

— FDXLPLG1930 1/8" NPT Brass Plug 

— FDXLVPS1930 Vent Pressure Switch, Indoor, 0–2,000 ft 

— FDXLVPS1931 Vent Pressure Switch, Indoor, 2,000–10,100 ft 

— IDXLTMB1931 Terminal Block – Remote Connection 

— UHXHD6ETERM Heatfab Stainless Vent Kit, 6" Horizontal 

Elbow Terminal 

— UHXHD6STERM Heatfab Stainless Vent Kit, 6" Horizontal 

Straight Terminal 

— UHXHD6ELBOW Heatfab Stainless Vent Kit, 6" 90° Elbow 

— UHXHD6PIPE18 Heatfab Stainless Vent Kit, 6" Vent Pipe, 

18" Long 


24" Long 


36" Long 

— UHXHD8STERM Heatfab Stainless Vent Kit, 8" Horizontal 

Straight Terminal 

— UHXHD8ELBOW Heatfab Stainless Vent Kit, 8" 90° Elbow 


18" Long 


24" Long 


36" Long 

— UHXNEGVT11501 Indoor Vent Adapter Kit, H150FD, 

Negative-Pressure (Vertical) 











— UHXPOSHZ11501 Indoor Vent Adapter Kit, H150FD, 

Positive-Pressure (Horizontal) 











— FDXLTDK1930 Tie-Down Kit – FD 

— FDXLWHA0001* Wiring Harness Kit Complete – FD 

— FDXLWHA1930** Wiring Harness Kit Complete – FD 

— FDXLCNK0001 Conversion Kit – NA to LP 

— FDXLCNK0002 Conversion Kit – LP to NA 

— FDXLHAK1930 Conversion Kit, H150FD-H400FD 

High-Altitude, 2,000-10,100 ft. 

— FDXLVSJ1930 Voltage Selector Jumpers 

— FDXLFSKF30 Fuse Kit, 3.0A, for Field Wiring Panel 

(Qty. 10) 


(Qty. 10) 


(Qty. 10) 

— FDXLFSKC30 Fuse Kit, 3.0A, for Integrated Control Board 

(Qty. 10) 

Heating

Universal H-Series Low NOx - Hayward

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