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5. Reassemble in reverse order. It may be necessary to
replace the gaskets around the nipples to seal them at the
flue collector. Replace the insulation and the casing top.
6. Reconnect the plumbing lines.
CASING TOP
FLUE
COLLECTOR
WIRE BRUSH
INSULATION
NIPPLES
HOOK
BAFFLE
Figure 18. Cleaning Flue Passages Of The JW F657
Heater
Shut Down For Extended Periods
When away for extended periods of time such as vacation,
and no freezing temperatures are expected:
1. Shut off the oil supply at the tank.
2. Shut off the cold water supply to the heater.
3. Turn "OFF" the electrical supply to the water heater.
4. Open an upstairs hot water faucet (to relieve any
pressure).
When freezing temperatures are expected:
1. Shut off the oil supply at the tank.
2. Shut off the cold water supply to the heater.
NOTE: It is recommended that all water lines
in the home be drained. Contact a qualified
plumber for directions applicable to the
heater.
3. Turn "OFF" the electrical supply to the water heater.
4. Connect a hose to the drain valve and drain as directed
in "Draining And Flushing".
5. Leave the drain hose attached as a reminder that the
tank has no water in it.
Re-Starting The Heater After Shut-Down
•
Flammable hydrogen gases may
be present.
•
Keep all ignition sources away
from faucet when turning on hot
water.
Explosion Hazard
WARNING
Caution:
Hydrogen gas can be produced in a hot water
system served by this heater that has not been used for a long
period of time (generally two (2) weeks or more).
Hydrogen
gas is extremely flammable and can ignite when exposed
to a spark or flame.
To reduce the risk of injury under these
conditions, it is recommended that the hot water faucet be
opened for several minutes at the kitchen sink before using
any electrical appliance connected to the hot water system.
Use caution in opening faucets. If hydrogen is present, there
will probably be an unusual sound such as air escaping
through the pipe as the water begins to flow. There should be
no smoking or open flame near the faucet at the time it is open.
1. Follow instructions for "Filling The Water Heater" and
"Startup" when heater is ready to be put back into service.
2. If the heater does not start, check to see if the relay on
the burner has tripped. Reset if necessary. Check to see
if the thermostat is set at “Normal” or “High”.
3. If the heater does not start:
a. Turn "OFF" the electrical supply to the water heater.
b. Shut off the oil supply at the tank.
c. Call a qualified Oil-Burner Technician.
