A.O. Smith BTP-200-300 Water Heater User Manual


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7
Part
Item Description Number
1 *Amplifier
Flame Rod Pilot, Green Amp (CR2-G-15) ...........................5701
Scanner Pilot, Purple Amp (CR2-G-20) ..............................5701-1
2 Arm, Crank .................................................................................5753
3 Arm, Damper ..............................................................................5723-1
4 Arm, Steel Crank (Aluminum Hub Assembly
For Damper 5/16" ID) ...........................................................5754
5 Arm, Steel Crank (Aluminum Hub Assembly
For Oil Valve or Butterfly 3/8" ID).......................................5754-1
5A Arm, Steel Crank (Aluminum Hub Assembly
For Extension Shaft 1/2" ID) ...............................................5754-2
6 Axle,Damper ..............................................................................5725-1
8 Blade,Damper.............................................................................5726-1
Box, Complete Panel
9 Body,Panel Box..........................................................................5756
10 Bracket, Mounting
Integral .................................................................................5757
Remote Bottom..................................................................... 5757-1
Remote Top ..........................................................................5757-2
11 Door, Panel Box.........................................................................5758
12 Latch & Knob, Door ...................................................................5736
13 *Plate, Chassis...........................................................................5759
14 Top, Panel Box Hinged ..............................................................5760
15 Cock, Gas
CR2-G-15 .............................................................................5719-4
CR2-G-20 .............................................................................5719-5
17 Cock,PilotGas .............................................................................5720
18 *Control-Less Amplifier .............................................................5702-1
19 Gas Drawer
Straight Assembly ...............................................................5763-3
Spinner Mounted Scanner ..................................................5763-4
22 Spinner
Photocell...............................................................................5764
Scanner ...............................................................................5764-1
23 Housing, Blower ........................................................................5721-1
24 *Light, Signal
Amber...................................................................................5728
White ....................................................................................5728-1
25 Motor, Blower
CR2-G-15 (1/2 HP) ..............................................................5705-2
CR2-G-20 (3/4 HP) ..............................................................5705-4
26 Motor, Modulating & Bracket .....................................................5765
27 *Orifice, Side (2") ......................................................................(SEE
CHART)
28 *Spring, Orifice ....................................................................5751-1
29 *Tee, Orifice .........................................................................5750-1
30 Plate, Housing Back...................................................................5766
Pilot Assembly, Complete
31 +Flame Rod (CR2-G-15) ......................................................5706-3
31A +Scanner (CR2-G-20A) ......................................................5706-4
32 Cable, Ignition (Consisting Of)
Cable #14-19 GTO 15,000 ..................................................5710
*#2Rajah Ring Terminal .......................................................5713
*CT-11 Rajah Cage Terminal ...............................................5714
33 Cable, Flame Rod (Consisting Of)
Cable, #14-19 GTO 15,000 .................................................5710
*Stud, Ring (2) .....................................................................5711
34 Clamp, Flanged Rod & Ignition Electrode ..................................5767-1
34A Clamp, Ignition Electrode ...........................................................5767
POWER BURNER MODELS CR2-G-15 AND CR2-G-20A
Part
Item Description Number
35 Flame Rod With Porcelain (CR2-G-15) ......................................5744
36 Ignition Electrode With Porcelain................................................5746
37 Insulator, Porcelain (Flame Rod) ................................................5745
38 Orifice, Pilot
Natural (CR2-G-15) ..............................................................5709
Natural (CR2-G-20A)............................................................5709-2
Propane.................................................................................5709-1
39 Plate, Pilot Mounting .................................................................... 5743-1
40 Plate, Back Sight Glass ..............................................................5729
41 Plate, Pump Opening (Damper Cover) .......................................5791
43 Regulator, Main Gas (Natural Only)
CR2-G-15 ..............................................................................5741-2
CR2-G-20A ...........................................................................5741-3
44 Regulator, Pilot
CR2-G-15 ..............................................................................5742
CR2-G-20A ...........................................................................5742-1
45 Ring, End (For Burners Before 5-11-81 Only) .........................5718-1
46 Ring, Motor Plate .........................................................................5769
47 Rod, Push....................................................................................5770
48 Scanner(CR2-G-20A) ................................................................5712-1
49 Shalt, Extension (For Mod Motor) ..............................................5771
51 *Sub-Base...................................................................................95657
52 Switch, Air ..................................................................................5752
53 Swivel (BaIl Joint).......................................................................5773
54 Switch, High Gas Pressure (CR2-G-20A) ................................5774
55 Switch, Low Gas Pressure (CR2-G-20A)................................5774-1
56 *Terminal Strip
Adapter, End Mounting .........................................................5731-1
Strip, Marking ........................................................................5731-2
TerminaI Block ....................................................................... 5731
57 *Timer, Control ............................................................................5704
58 Transformer, lgnition ..................................................................5734
59 Tube, Blast
CR2-G-15 ..............................................................................5715-1
CR2-G-20 ..............................................................................5715-3
60 Valve, Adjustable Bleed (CR2-G-15) ........................................5738
61 *Valve, Auxiliary Solenoid Gas:
CR2-G-15 ..............................................................................5737-2
CR2-G-20A ...........................................................................5737-3
62 Valve Body, Gas:
CR2-G-15 ..............................................................................5777-3
CR2-G-20A ...........................................................................5775-1
63 Valve, Butterfly:
CR2-G-15 ..............................................................................5776
CR2-G-20A ...........................................................................5776-1
64 Valve, Diaphragm Gas (C2-G-15) .............................................5739-2
65 Valve Operator, Gas:
CR2-G-15 ..............................................................................5777-2
CR2-G-20A ...........................................................................5777-1
66 Valve, Pilot:
CR2-G-15 ..............................................................................5740
CR2-G-20A ...........................................................................5740-1
67 Wheel, Blower:
CR2-G-15 ..............................................................................5733-2
CR2-G-20A ...........................................................................5733-3
68 Standard hardware items may be purchased locally
*Not illustrated
+When ordering, tell if needed for Natural or Propane gas.
ORIFICE CHART
Natural Propane
Burner Gas Orifice Gas Orifice
Models Number Part No (Decimal) Part No (Decimal)
BTP 200-1500
BTP 300-1500 CR2-G-15 5708 .843 5708-5 .437
BTP 400-1500
BTP 600-1500
BTP 400-1750 CR2-G-15 5708-1 .921 5708-6 .500
BTP 600-1750
BTP 400-2000 CR2-G-15 5708-2 1.000 5708-7 .531
BTP 600-2000
BTP 400-2250 CR2-G-20A 5708-3 1.437 5708-9 .562
BTP 600-2250
BTP 400-2500 CR2-G-20A 5708-4 1.812 5708-10 .652
BTP 600-2500
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