P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide
| 45
MASTERTEMP 125 HEATER REPLACEMENT PARTS
REPAIR PARTS – BURNER SYSTEM
Model
Key Part
No. Description
Qty.
1 Combination Gas Control Valve Kit
23/4" Union
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3Gas Orifice
4Gas Orifice O-Ring
•Gas Orifice Kit – NG (Incl. Key Nos. 3 and 4)**
•Gas Orifice Kit – Propane (Incl. Key Nos. 3 and 4)**
•NG to Propane Conversion Kit
(Incl. Key Nos. 3 and 4)**
•Propane to NG Conversion Kit
(Incl. Key Nos. 3 and 4)**
5Air Blower Kit
•Air Orifice Kit (Includes Key Nos. 6 and 7)
6Air Orifice Kit
7Air Orifice Grill
•Blower/Adapter Plate Gasket Kit
(Includes Key Nos. 8, 9, 10, 12)
•Flameholder Kit (Includes
Key Nos. 10, 11, 12, 13)
8Blower/Adapter Plate Gasket
9Blower Adapter Plate
10 Flameholder/Adapter Plate Gasket
11 Flameholder Assembly
12 Flameholder/Combustion Chamber Gasket*
13 Flameholder Insulation Cap
•Flameholder Insert
14 Combustion Chamber Gasket Kit
15 One Piece Metal Chamber/Combustion Chamber
Assembly (9-bolt)
•Insulation Kit (Includes Key No. 13, 16, 17,18,19)
16 Bottom Outer Insulation Blanket*
17 1" Bottom Inner Insulation
18 1" Top Insulation
19 Top Outer Insulation Blanket*
• Lower Enclosure Insulation
20 One Piece Metal Elbow/Combustion Chamber
Cover Assembly (9-bolt)
21 Metal Vent Cover
22 Heater Top
Side Panel {Service Panel}
24 Side Panel {Manifold}
Heater Bottom
26
25
23
Side Panel {Flue Stack}
27 J-Box Cover
28 Screws/Clips Kit, Panel (8 ea. clips & 8 ea. screws)
MT125 NA
474133Z
38404-4097S
475131
475132
475133
475134
474104Z
475138
77707-0011
474994
474990
77707-0008
42001-0074S
474958
42002-0005S
42002-0034Z
474991
474992
42002-0031Z
474993
42002-0041Z
474292
* Not available separately.
Not included with heater. Order separately .
1
1
1
1
1
1
1
1
**
MT125 LP
474952
Combustion Air Intake Duct Connection Kit CALL
1•
1
1
1
1
1
1
1
1
1
1
1
1
2
1
Section 5. Replacement Parts
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