1

472352

Exhaust grill w / gasket - Includes # 2

2

471701

Gasket, exhaust grill - does not include grill

3

472353

Top Cover w/Posts

3

472354

Top Cover w/Posts

3

472355

Top Cover w/Posts

3

472356

Top Cover w/Posts

4

472373

Exhaust assembly

4

472376

Exhaust assembly

5

472361

Blower w/gasket - Includes # 6

5

472362

Blower w/gasket - Includes # 6

5

472374

Blower w/gasket - Includes # 6

6

471610

Gasket for blower - does not include the blower

7

472008

Flue collector - Not Available

7

472007

Flue collector

7

472006

Flue collector

7

472005

Flue collector

8

472270

Insulation

9

471991

Return header assembly

10

471622

Bolt, heat exchanger - 16 Required

11

072184

Washer, heat exchanger - 16 Required

12

471904

Fire box assembly

12

471835

Fire box assembly

12

471922

Fire box assembly

12

472332

Fire box assembly

13

471910

Heat exchanger with headers

13

471785

Heat exchanger with headers

13

471928

Heat exchanger with headers

13

471838

Heat exchanger with headers

13

471933

Heat exchanger without headers - Special Order
Includes Baffles and Tube Fin Gaskets

13

471934

Heat exchanger without headers
Includes Baffles and Tube Fin Gaskets

13

471935

Heat exchanger without headers
Includes Baffles and Tube Fin Gaskets

13

471936

Heat exchanger without headers
Includes Baffles and Tube Fin Gaskets

14

471642

Baffle, heat exchanger - 8 Required -
Included with exchanger

14

471641

Baffle, heat exchanger - 8 Required
Included with exchanger

14

471896

Baffle, heat exchanger - 8 Required
Included with exchanger

14

471640

Baffle, heat exchanger - 16 Required
Included with exchanger

15

471566

Thermistor probe

16

471587

Hi-limit thermostat, 115°F

17

471694

Hi-limit thermostat, 150°F

18

473605

Water pressure switch - Tecmark # 4152P-DD
non-ASME & ASME
Replaces old pressure switches # 471672 and 470190

19

472363

In/out top sub-header assembly

20

471992

In/out main header assembly
Includes # 19, # 21, # 22, # 27, # 28
& Thumb Screw Drain Plug ( Plug not shown on breakdown )

21

472364

In/out bottom sub-header

22

471420

Cap, in/out bottom sub-header

23

274494

O-ring, adapter - 2 Required

24

274440

Adapter, bulkhead ring - 2 Required

25

471441

Adapter, bulkhead, 2 in. - 2 Required

26

070951

Gasket, fin tube, seal - 18 Required
Included with exchanger

27

471750

Flow valve assembly - Includes # 28

28

472330

Power element, flow valve - only

29

472365

Sub-gas manifold w/plug

30

460760

Gas valve, natural gas - 3/4" x 3/4" IID

30

460761

Gas valve, propane

31

460784

Kit, Burner - Includes # 35 & # 45 ONLY )
( use with Nat or LP Units )

31

460785

Kit, Burner - Includes # 35 & # 45 ONLY )
( use with Nat or LP Units )

31

460786

Kit, Burner - Includes # 35 & # 45 ONLY)
( use with Nat or LP Units )

31

460787

Kit, Burner - Includes # 35 & # 45 ONLY )
( use with Nat or LP Units )

32

460799Z

Igniter - ( conversion kit )
Original igniters where different and requires a
conversion to accept newer style igniter.

32

472604

Igniter - This igniter can be used if the previous igniter has already been converted from a older style.

33

471603

Flame Sensor - ( Electrode flame sensor 1 )

34

471892

Gas manifold without orifices, natural or propane
( use with Nat or LP Units )

34

471661

Gas manifold without orifices, natural or propane
( use with Nat or LP Units )

34

471889

Gas manifold without orifices, natural or propane
( use with Nat or LP Units )

34

471708

Gas manifold without orifices, natural or propane
( use with Nat or LP Units )

35

CALL

Orifices, natural - see Note 'A'

35

CALL

Orifices, propane - see Note 'A'

36

070230

Burner - 2 Required - also order Qty 2 - # 36 with bracket

36

070230

Burner - 3 Required - also order Qty 2 - # 36 with bracket

36

070230

Burner - 4 Required - also order Qty 2 - # 36 with bracket

36

070230

Burner - 6 Required - also order Qty 2 - # 36 with bracket

36

471970

Burner w/bracket - 2 Required per heater

37

471575

Jacket, upper panel, left

38

471576

Jacket, upper panel, right

39

471767

Jacket, upper sub-plate - 2 Required

40

472701Z

Front Burner Tray Bracket

40

472702Z

Front Burner Tray Bracket

40

472703Z

Front Burner Tray Bracket

40

472704Z

Front Burner Tray Bracket

41

472325

Air pressure ( vacuum ) switch - 3000 to 6000 feet
Blue Color Coded Label -  Special Order Only - new switch may look different than original

41

472180

Air pressure ( vacuum ) switch - 3000 to 6000 feet
Green Color Coded Label

41

472328

Air pressure ( vacuum ) switch - 3000 to 6000 feet
Pink Color Coded Label

42

472080

Module, ignition control - **** NOTE **** Original module is no longer available. Use conversion kit listed below.

42

460783

Module Conversion Kit, Includes ignition control module Pentair #472447 / H2O# 9764948 along with various wiring harness components. If heater has already been converted you can just replace the module.
  READ PDF FILE HERE

43

472086

Temperature controller assembly

44

471727

Right door assembly with controller

44

472372

Right door assembly w/o controller

45

471900

Left door assembly

45

472318

Left door assembly

45

471918

Left door assembly

45

471726

Left door assembly

-

075173

Thermal cutoff - fusible link

-

071131

Thumb Screw Drain Plug - less o-ring on In/Out Header
( same drain plug which is on Whisperflo pumps )

-

-----------

O-Ring for Thumb Screw Drain Plug on In/Out Header

-

472508

Transformer, 40 VA

-

472375

Wire harness assembly

-

460506

Indoor vent adaptor, 4 in. - Special Order

-

460507

Indoor vent adaptor, 5 in.

-

470184

Knob, T-Stat board

-

470181

T-Stat board knob stem

-

470328

Fan Tubing

-

471548

Control Panel Cover

-

471773

Power Switch

-

471715

Top Panel Clips

-

471549

Control Cover Hinge

-

070715

Clips to hold Thermal Fuse

-

472370

Window Glass

     Last Update - March, 2015            H2Oco.com