Temperature and Pressure Relief Valve
Explosion Harzard
•
• Properly sized temperature- pressure relief valve must be installed in opening provided.
• Can result in overheating and excessive tank pressure.
• Can cause serious injury or death.
Manually operate the temperature and pressure relief valve at least once a year to make sure it is working
properly. To prevent water damage, the valve must be pro- perly connected to a discharge line which terminates at an adequate drain. Standing clear of the outlet (discharged water may be hot), slowly lift and release the lever handle on the temperature and pressure relief valve to allow the valve to operate freely and return to its closed position. See Figure 23. If the valve fails to completely reset and continues to release water, immediately shut off the manual gas control valve and the cold water inlet valve and call a qualified technician.
TEMPERATURE AND PRESSURE
RELIEF VALVE
MANUAL RELIEF
VALVE
DISCHARGE LINE TO DRAIN
FIGURE 23.
MAINTENANCE OF YOUR WATER HEATER
Replacement Parts
IMPORTANT: The following maintenance procedures are for the FVIR System components and should be performed by a qualified technician.
Replacement parts may be ordered through your plumber or the local distributor. Parts will be shipped at prevailing prices and billed accordingly. When ordering replacement parts, always have the following information ready:
1.model, serial, and product number
2.type of gas
3.item number
4.parts description
See Repair Parts Section for a list of available repair parts.
Removing the Manifold/Burner Assembly
1.Turn off the gas supply to the water heater at the manual gas
2.Disconnect power supply to the heater.
3.Remove the outer door. Remove the 2 screw securing the manifold door assembly to the skirt.
4.Disconnect all wiring connectors from the gas control valve/thermostat (Figure 24). Disconnect the manifold tube at the gas control valve/thermostat.
5.Grasp the manifold tube and push down slightly to free the manifold from the gas control valve/thermostat.
6.Carefully remove the manifold assembly from the burner compartment. NOTE: Be sure not to damage internal parts (Figure 28).
7.Check the burner to see if it is dirty or clogged. The burner may be cleaned with soap and hot water.
Gas Control Valve/
Thermostat
Manifold Tube |
|
|
|
| Pressure |
Power Supply |
| Switch / Fan, |
Transformer |
| FV Sensor |
Connector | Igniter/Flame | Connector |
| Sense | Control Display, |
| Connector | |
| Anode Rod | |
|
| |
|
| Connector |
FIGURE 24.
Removing the Burner from the Manifold/ Burner Assembly
Natural Gas Burner
1.Take off the burner by removing the two (2) screws located underneath the burner.
2.Check the burner to see if it is dirty or clogged. The burner may be cleaned with soap and hot water (Figure 25).
Manifold Door Assembly
View Port
Screws
Igniter/Flame
Sense Connector
Burner
(Bottom View)
FIGURE 25.
25