John Wood SpaceSaver (2.5 Gallon) - Manual (Page 11)

11
MAINTENANCE OF YOUR WATER HEATER
Temperature and Pressure
Relief Valve
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 properly
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. If the valve
fails to completely
reset and continues
to release water, immediately disconnect the electrical
power, close the cold water inlet valve and call a qualifi ed
person.
Draining and Flushing
The water heater should be drained if being shut down
during freezing temperatures. It is recommended that the
tank be drained, and fl ushed every 6 months to remove
sediment which may buildup during operation. To drain the
tank perform the following steps:
1. Disconnect the electrical power.
2. Close the cold water inlet valve and open a hot water
faucet.
3. Disconnect water connections. Remove unit from wall.
UNIT WILL BE HEAVY. Turn unit upside down and
drain unit into a suitable drain or receptacle.
4. Follow the instructions in the “Filling the Water Heater”
section of this manual.
5. Reconnect the electrical power and turn on the water
heater.
Leakage Checkpoints
Read this manual first. Then before checking the water
heater make sure the electrical power supply has been
turned “OFF” before checking the tank for leakage.
*1. Condensation and dripping may be seen on pipes if
the water temperature is low in humid weather or pipe
connections may be leaking.
2. Small amounts of water from temperature-pressure
relief valve may be due to thermal expansion or high
water pressure in your area. If the valve is not piped to
an open drain the released water could be mistaken
for a leaking heater, see “Closed System/Thermal
Expansion” section.
*3. The temperature-pressure relief valve may be leaking
at the tank fitting.
4. Water on the side of the tank may be condensation due
to the panel or insulation not being in place.
*5. Water in the water heater bottom or on the floor may
be from condensation, loose connections, or the relief
valve. DO NOT replace the water heater until a full
inspection of all possible water sources is made and
necessary corrective steps taken. Leakage from other
appliances, water lines, or ground seepage should also
be checked.
* To check where threaded portion enters tank, insert
cotton swab between jacket opening and fitting.
If cotton is wet, follow “Draining and Flushing”
instructions and then remove fitting. Use Teflon
® tape
or approved pipe sealant on threads and replace. Then
follow “Filling the Water Heater” instructions in the
“Installing Your Water Heater” section.
® TEFLON is a registered trademark of E.I. Du Pont De Nemours and Company.
Failure to follow these instructions can
result in death or explosion.
Do not remove valve.
Do not plug valve.
Examples of a qualified person include:
licensed plumbers, authorized gas company
personnel, and authorized service
personnel.
If the temperature and pressure relief valve
is dripping or leaking, have a qualified
person replace it.
Explosion Hazard
WARNING
Figure 10
T&P Valve Testing
Temperature and Pressure
Relief Valve
Manual Relief
Valve
Discharge line to drain