Superior
Gas Water Heater

Model # 8-50-NQRT6-5 Official Superior gas water heater

Here are the diagrams and repair parts for Official Superior 8-50-NQRT6-5 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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Model diagram and schematic

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ALL PARTS
Showing 10 of 26 parts  |

Water Heater Temperature And Pressure Relief Valve 9000071
#20

Round gas diagram

Water heater temperature and pressure relief valve

Part #9000071

$15.54
11% OFF Phone Price : $17.54
In Stock
Control V/v 9001319
#9

Round gas diagram

Control v/v

Part #9001319

The manufacturer no longer makes this part, and there's no substitute part

Flue Baffle 9000363
Flue baffle

Part #9000363

In Stock
Box 9000356
#2

Round gas diagram

Box

Part #9000356

This item is not returnable
In Stock
Water Heater Manifold Inner Door 9000281
#18

Round gas diagram

Water heater manifold inner door

Part #9000281

$17.69
10% OFF Phone Price : $19.69
In Stock
Nipple 9000948
#4

Round gas diagram

Nipple

Part #9000948

Replaced by #9002564

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Manufacturer substitution
This part replaces 9000948. Substitute parts can look different from the original.
$19.19
9% OFF Phone Price : $21.19
In Stock
Rexel Pan Base 9001609
#26A

Round gas diagram

Rexel pan base

Part #9001609

Replaced by #100108616

?
Manufacturer substitution
This part replaces 9001609. Substitute parts can look different from the original.
In Stock
Anode Rod 9000734
#21

Round gas diagram

Anode rod

Part #9000734

Replaced by #100108660

?
Manufacturer substitution
This part replaces 9000734. Substitute parts can look different from the original.
In Stock
Water Heater Drain Valve 9000254
#19

Round gas diagram

Water heater drain valve

Part #9000254

Replaced by #100108361

?
Manufacturer substitution
This part replaces 9000254. Substitute parts can look different from the original.
In Stock
Pilot 9000284
#15

Round gas diagram

Pilot

Part #9000284

Replaced by #100109070

?
Manufacturer substitution
This part replaces 9000284. Substitute parts can look different from the original.
In Stock

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Main causes: faulty pressure relief valve, water is overheating…

Effective articles & videos to help repair your water heaters

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

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…