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Removing the Burner Door Assembly
1. Turn offthe gas to the water heater at the manual gas
shut-off valve (Figure 3).
2.
Turn the gas control knobon the combination gas control
valve/thermostat clockwise to the "OFF" position (Figure 1).
NOTE: Depress the dial stopon Robertahawvalve before
turning the gas control knob. See Lighting Instructions on
the water heater.
3. Remove the outer door.
4. Remove the two screws eecudng the burner door
assembly to the combustion chamber. (Figure 24).
GAS VALVE/
THERMOSTAT
MANIFOLD
TUBE
PIEZO
IGNITER
BUTTON
- PILOT
TUBE
- BURNER
DOOR
DOOR TWO PIECE WlRE
SCREW (2) CONNECTOR
Ultra Low NOx Natural Gas Burner
Check the burner tosee if it is dirty or clogged. The burner
may be cleaned with soft paint brush (Figure 26). Do not use
a wire brush or any tool that may damage the burner screen.
Important: Do not use the bumer if the bumer screen is
damaged. NOTE: Damage may be rips or holes in the burner
screen. Discoloration is normal.
BURNER _ )
FIGURE 26,
Replacing the Pilot Assembly
5.
6,
7.
FIGURE 24.
Disconnect the thermocouple (right-hand thread), pilot
tube, the igniter wire from the igniter button, and manifold
tube at the thermostat.
(Figure 25).
Grasp the manifoldtube and push down slightlyto free
the manifold tube, pilot tube, and thermocouple.
Carefully remove the burner door assemblyfrom the
combustion chamber. Be sure not to damage internal
parts.
ROBERTSHAW GAS VALVE
_ _ _--PILOTTUBE
THERMeeOURLE ._EJ
MANIFOLD TUBE j'_
FIGURE 25.
1.
2.
3,
4.
5.
6.
7.
8,
9.
10.
11.
12.
21
Follow the instructionsin =Removingthe Burner Door
Assembly" section t_ remove the assembly.
Removethe retainerdip secudngthe twop_,cewire
connector tothe burnerdoorassembly.(Notethe orientation
ofthe retainerclip).Insertthe tipofa large fiathead
screwdriverbetween the dip and thetop of the twopiece
wire connector.Carefullyrotatethe screwdrivertoraise the
clip. Itmay benecessarytoremovethe connector one side
at atime.(See Figure27.)
Locatewhere thethermocouple connects tothe rear ofthe
pilotassembly,and pullthe thermocouple tipfrom the rear of
the pilotassembly.
Remove the nut secudng the pilot assembly to the burner
and keep it for rouse later.
Use a 1/2" open end wrench, to loosen the nut secuhng the
pilot tube to the pilot. To prevent any bending use a pair of
pliers to steady the pilot bracket.
Remove the aidpilot assembly (including the igniterwire)
from the burner door assembly.
Insertthe pilottube intothe new pilot assembly, Important
The new pilotassemblycomes with an odflce.This ohfice
must be installed when replacingthe pilot assembly,
IMPORTANT:Do not operate thiswater heatarwithout the
orificein place.
Use a 1/2"open end wrench,to tightenthe nut secodngthe
pilottubetothe pilot.Toprevent anybending use a pair of
plierstosteadythe pilotbracket.
Use the nut removed in a previoussteptosecurethe new
pilot assemblyto the burner.
Insert the igniterwire throughthe burnerdoorand reconnect
the thermocoupleto the pilotassembly. See =Replacingthe
Thermceeuple"section.
Reinstallthe twopiecewire connector. NOTE:The pilot
tube mustbe atthe topfollowedbythe igniterwire then the
thermocouple.
Followthe instructionsin=Replacingthe BumerDoor
Assembly" sectiontoreinstallthe assembly.
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