American International PR 100-34 2NV or 2PV Manual Do Utilizador

27

At least every 3 months, a visual inspection should be 
made of the combustion air inlet as well as the exhaust and 
water piping.  Check the water heater for the following:

• 

Obstructions, damage, or deterioration in the venting 
system. Make sure the exhaust and  combustion air 
supplies are not obstructed. 

• 

Leaking or damaged water and gas piping.

• Presence 

of 

fl ammable or corrosive materials in the 

installation area.

• 

Presence of combustible materials near the water   
heater.

Important: Verify proper operation after servicing this water 
heater.

The gas valve on this water heater has been permanently 
set at the factory for proper operation.  No field adjustments 
are needed and none should be performed.

Removal and replacement of the gas regulator valve  
involves the disconnection of gas piping and electrical 
leads. This procedure must be performed by a qualified 
service technician.

Important:  When removing the gas valve, do not use a 
pipe wrench or vise to grip the body. Do not apply any force 
to the gas valve or the cast flange fitting on the inlet side 
of the gas valve (see figure 25.) Such force may break or 
crack these components.

1.  Turn temperature dial counterclockwise to the lowest    

setting and turn off electrical power to appliance.

2.  Shut off the gas at the manual shut-off valve on the    

gas supply line. See figure 19 for reference.  Remove    
the access door.

3.  Disconnect the gas piping connection just outside   

the base of the water heater .  Note:  Use a second 
pipe wrench on the gas piping inside the skirt to avoid 
cracking the gas valve or the flange fitting.   

4.  Remove the pressure tap from the gas valve (see     

figure 25).  The hose should not be disconnected.

5.  Remove the Phillips head screw holding the electrical    

plug and remove electrical plug from the gas valve.

6.  Remove the three T-25 Torx head brass screws that  
 

attach the gas valve to the venturi manifold, using   
the T-25 Torx wrench supplied with the gas valve kit 

(model VK8115V, part number 6903775.)

7.  Remove the gas valve from the unit keeping the     

rubber gasket with the gas valve .

8.  Remove the flange from the gas inlet side  of the valve 

by removing the four (4) attachment  screws.

Important:  The rubber gasket that seals the gas valve to 
the venturi manifold must be used (previous gaskets may 
be reused, if in good condition).  Make sure the gasket is 
properly inserted into the recess on the gas valve prior to 
installation (see figure 25 for exact placement of the rubber 
gasket).  

1.  Remove the O-ring from the flange (removed from the 

old gas valve) and replace it with the one provided 
in the gas valve kit (model VK8115V, part number 
6903775.)

2.  Reattach the elbow flange to the gas valve.  Tighten  all 

four screws securely.

3.  Place the three T-25 Torx screws through the proper     

holes in the venturi manifold flange.  See figure 25.

4.  Properly install a new rubber gasket (provided) as       

shown in figure 25.

5.  Position the gas valve and start all three screws 

(projecting downward from the venturi manifold) into  
the gas valve.  A T-25 Torx wrench has been provided  
in the gas valve replacement kit (model VK8115V, part 
number 6903775.)

Note: All three T-25 Torx screws must be properly tightened 
to secure the seal between the gas valve and the venturi 
manifold. 

6.  Reconnect the pressure tap to the port on the new gas  

valve (see figure 25).

7.  Reconnect the external gas supply line to the gas pip-

ing  on the gas valve. Be sure to use approved Teflon 
tape or pipe joint compound suitable for gas piping.

Note:  Use a second pipe wrench on the gas piping inside 
the skirt to avoid cracking the gas valve or the cast fitting.

8.  Reconnect the electrical plug to the gas valve and       

secure it with the screw provided.

9.  Turn gas supply on and check for leaks. Use a chlo-

ride-free soap and water solution (bubbles forming 
indicate a leak) or other approved method. All leaks 
must be fixed immediately.

10.  Be sure tank is completely filled with water before re-

storing power to the water heater. Follow operating      
instructions on Page 25.

11.  Ensure proper operation of the water heater, then rein-

stall the access door.

If additional information is required, contact the Product 
Service and Support Group at 1-800-456-9805.