Superior
Gas Water Heater

Model #5-40-NXRT6-2 Official Superior gas water heater

Here are the diagrams and repair parts for Superior 5-40-NXRT6-2 gas water heater, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Error Codes
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Parts List

Showing 10 of 29 parts

Water Heater Temperature and Pressure Relief Valve#20

Functional replacement parts Diagram

In Stock
$28.29 | 
15% OFF 
Phone Price: $33.29
Water Heater Anode Rod (replaces 4700375, 9000279, 900029, 9000379, 9000707, 9001543)#21

Functional replacement parts Diagram

Annode rod

Part #9000279
Replaced by #9001453
?
Manufacturer substitution
This part replaces 9000279. Substitute parts can look different from the original.
In Stock
$84.82 | 
6% OFF 
Phone Price: $89.82
Water Heater Manifold Inner Door#18

Functional replacement parts Diagram

In Stock
$17.69 | 
10% OFF 
Phone Price: $19.69
Box#2

Functional replacement parts Diagram

Box

Part #9000356
This item is not returnable
In Stock
$4.99
Water Heater Pilot Tube Assembly (replaces STD317025, STD317255)#13

Functional replacement parts Diagram

In Stock
$17.69 | 
10% OFF 
Phone Price: $19.69
Ring#3

Functional replacement parts Diagram

Ring

Part #9001208
In Stock
$17.17
Baffle#8

Functional replacement parts Diagram

Baffle

Part #9000944
In Stock
$60.49
Pan Base#26A

Functional replacement parts Diagram

Pan base

Part #9001609
In Stock
$77.51
Flue Baffle#8A

Functional replacement parts Diagram

Flue baffle

Part #9001206
In Stock
$33.49
Water Heater Water Line Connector#4

Functional replacement parts Diagram

Nipple

Part #9000948
Replaced by #9002564
?
Manufacturer substitution
This part replaces 9000948. Substitute parts can look different from the original.
In Stock
$19.19 | 
9% OFF 
Phone Price: $21.19

Symptoms common to all water heaters

Choose a symptom to see related water heater repairs.

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
Main causes: faulty pressure relief valve, water is overheating
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failure, bad thermocouple
Main causes: water supply needs chlorine treatment, anode rod too reactive
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

Articles and videos common to all water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

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