John Wood Direct Vent Models No Longer in Production - Manual (Page 10)

SPECIAL NOTE ON PROPANE FUEL:
L.P. GAS IS HEAVIER THAN AIR
Should there be a leak in the system, the gas will settle
at FLOOR LEVEL. Basements, crawl spaces, closets
and areas below ground level will serve as pockets for
the accumulation of the gas.
BEFORE LIGHTING, SNIFF AT FLOOR LEVEL. IF
YOU SMELL GAS, FOLLOW THESE RULES.
1. Get all people out of the building.
2. DO NOT light matches.
3. DO NOT touch electrical switches (on or off).
4. DO NOT use an electrical fan to remove gas from
area.
5. SHUT OFF GAS at the L.P. tank outside of the build-
ing.
6. IMMEDIATELY call the L.P. Gas Company or the fire
department from a neighbor’s phone. Ask for instruc-
tions. Before hanging up, give your name, address
and telephone number.
7. DO NOT go back into the building. If help is coming,
wait for it outside the building.
OUT OF FUEL
When your L.P. tank runs out of fuel, turn off gas at all gas
appliances. After L.P. tank is refilled, all appliances must
be re-lit according to the manufacturers instructions.
WATER TEMPERATURE REGULATION
The thermostat is adjusted to its lowest temperature posi-
tion when shipped from the factory. The temperature of
the water can be selected by setting of the temperature
dial. The “LOW” position on the thermostat is the pre-
ferred starting point for setting the temperature/control
knob (approximately 50°C (120°F)). The lowest setting
will maintain the minimum water temperature if you are
going away for an extended period. The burner may be
extinguished if operated below this temperature.
Energy conservation is a consideration when select-
ing the water temperature setting.
HIGHER SETTING INCREASES THE RISK OF SCALD
INJURY
In households with children or invalids and/or elderly per-
sons, select a lower temperature setting. To reduce the
risk of scalding, valves for reducing the point of discharge
water temperature by mixing in branch water lines are
available. Please consult a licensed plumber or plumbing
authority.
EXPOSURE TO WATER
TAMPERING
Tampering with the thermostat, gas valve or temperature
pressure relief valve is DANGEROUS and voids all war-
ranties. Only qualified personnel should service these
components.
BURNER MAINTENANCE
At least every 3 months, check the burner and pilot
flames. The burner flames must be a soft blue flame with
no yellow tips. Yellow tips indicate a carbonizing flame
which can, depending on severity, deposit carbon (soot)
on the combustion chamber and flue passages.
A sheet metal burner is used on natural gas models (see
Figure 4).
The sheet metal burner for Natural Gas has no external
air adjustment. It is fully self-compensating and no out-
side adjustment is required. Observe the flame pattern.
Ensure that no debris has fallen on top of the burner and
no foreign objects have been introduced into the com-
bustion chamber. Ensure that the vent terminal openings
are not obstructed and the inner door to the combustion
chamber is closed.
GAS CONTROL
For gas control replacement, contact your local gas utili-
ty, or a qualified serviceman. The replacement control
must be a manufacturer’s approved replacement for the
control which has been removed.
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WARNING
If the water heater needs to be relit;
1. Open the inner door for at least 10 minutes
and force some fresh air into the combus-
tion chamber to clear any gas from the
water heater and vent system.
2 Check the vent terminal for blockage.
3. Follow the lighting instruction again.
IMPORTANT
Should the water heater be subjected to flood-
ing, fire, or other unusual condition, turn off
gas at the manual gas shut-off valve and
water at the inlet valve to the heater. Do not
put the heater in operation until it has been
thoroughly checked by a qualified gas techni-
cian.
Figure 4