A.O. Smith GP 6 50YPC T 100 Benutzerhandbuch

34

Important: Use only factory authorized replacement 
parts. If you lack the necessary skills to properly 
perform the installation, you should not proceed, but 
get help from a qualified service technician.
Tools required: Phillips Head Screwdriver.

Removing the Air Intake Chamber Box:
1.  Set the gas control valve/thermostat to its lowest 

setting by pressing the “COOLER” and “HOTTER” 

buttons together at the same time holding for 1 

second. Then press the “COOLER” button to the 

lowest setting (Figure 57).

2.  Turn gas control switch  to the “OFF” position 

(located right side of the gas control valve/

thermostat) and turn off the gas supply to the unit 

(Figure 58). 

3.  Disconnect the electric connection by unplugging 

the transformer from the wall outlet (Figure 58).

4.  Remove the manifold cover/ outer door from the 

unit by depressing on the lower portion and pulling 

outward.

5.  Unplug the 3-wire pressure switch/fan/sensor 

electrical connection of the wiring harness from 

the gas control valve/thermostat by depressing the 

lower portion of the snap clip to open and pulling 

down the connector (Figure 59).

6.  Unplug the electric flag terminals and air pressure 

tubing from the pressure switch (Figure 60).

7.  Remove the FV sensor by depressing the snap 

lock to open the FV sensor cover, slide the FV 

sensor out of the cover and unplug the electrical 

flag terminals connections (Note: place the FV 

sensor in a safe place as it will be reinstalled later) 

(Figure 60).

8.  Using a phillips head screwdriver remove the 2 

screws of the air intake chamber screen (Note: 

save screws for reinstallation later) (Figure 62).

9.  Remove the air intake chamber screen by lifting 

upward and outward (Figure 62).

10. Please take note of the wire position routing 

around the fan inside the air intake chamber as 

this wire positioning will need to be duplicated 

upon installation of the new wiring harness  

(Figure 62).

11. Using a phillips head screwdriver, remove the 4 

screws securing the air intake chamber box to the 

water heater’s side (also keeping these screws in 

a safe place for reinstallation later) (Figure 61).

12. Rotate the top of the air intake chamber box from 

left to right (only a few inches in both directions) 

while pulling outward at the bottom removing 

the air intake chamber box from the combustion 

chamber pipe saving the air intake chamber 

gasket for reinstallation (Figure 61).

 GAS CONTROL

VALVE/THERMOSTAT

 

PRESSURE
SWITCH/FAN,
FV SENSOR
CONNECTOR

g

COOLER

HOTTER

Electronic Control Display

ON/OFF 

SWITCH

ON

OFF