John Wood Envirosense Power Vent - Manual (Page 26)

26
It is recommended that lower water temperatures be used to avoid
the risk of scalding. It is further recommended, in all cases, that the
water temperature be set for the lowest temperature which satisfies
your hot water needs. This will also provide the most energy efficient
operation of the water heater.
Short repeated heating cycles caused by small hot water uses can
cause temperatures at the point of use to exceed the thermostat setting
by up to 20°F (11°C). If you experience this type of use you should
consider using lower temperature settings to reduce scald hazards.
HOT WATER CAN SCALD: Water heaters are intended to produce hot
water. Water heated to a temperature which will satisfy space heating,
clothes washing, dish washing, and other sanitizing needs can scald and
permanently injure you upon contact. Some people are more likely to be
permanently injured by hot water than others. These include the elderly,
children, the infirm, or physically/mentally handicapped. If anyone using
hot water from this heater fits into one of these groups or if there is a
local code or state law requiring a certain temperature water at the hot
water tap, then you must take special precautions. In addition to using the
lowest possible temperature setting that satisfies your hot water needs, a
means such as a mixing valve should be used at the hot water taps used
by these people or at the water heater. Mixing valves are available at
plumbing supply or hardware stores, see Figure 2. Follow manufacturer’s
instructions for installation of the valves. Before changing the factory
setting on the thermostat, in this manual, see Figure 26.
Never allow small children to use a hot water tap, or to draw their own
bath water. Never leave a child or handicapped person unattended
in a bathtub or shower.
The water heater should be located in an area where the general
public does not have access. If a suitable area is not available, a cover
should be installed over the thermostat to prevent tampering.
The water temperature setting was factory set at the lowest temperature;
Pressing the “COOLER”
button decreases temperature and
pressing the “HOTTER” button increases the temperature.
Setting the water heater temperature at 120°F (49°C) (Approx. “
” mark on temperature setting of gas control valve\thermostat) will
reduce the risks of scalds. Some states or local codes require set-
tings at specific lower temperatures.
teMperature reGulatIon
To avoid any unintentional changes in water temperature settings, the
control has a tamper resistant feature for changing the temperature
setting. To change the temperature setting follow these instructions:
1. “Wake Up” the temperature indicators by holding down both
“COOLER” and “HOTTER” temperature adjustment buttons at
the same time for one second, see Figure 26. One or two of the
temperature indicators will light up. These indicators will only
remain on for 30 seconds if no further buttons are pressed. After
30 seconds the control will go back to “Sleep” mode.
2. Release both of the temperature adjustment buttons.
a. To decrease the temperature press and release the “COOLER”
button until the desired setting is reached.
b. To increase the temperature press and release the “HOTTER”
button until the desired setting is reached.
NOTE: Holding down the button will not continue to lower or raise
the temperature setting. The button must be pressed and released
for each temperature change desired.
Should overheating occur or the gas supply fail to shut off, turn off
the manual gas control valve to the appliance.
fIGure 26.
C-Flashing = approx. 160°F (71°C) About 1/2 second
C = approx. 150°F (66°C) About 1-1/2 seconds
B = approx. 140°F (60°C) Less than 5 seconds
A = approx. 130°F (54°C) About 30 seconds
= approx. 120°F (49°C) More than 5 minutes
WARM = approx. 80°F (27°C) - - - - - - - - - - - - - -
Time to Produce
2nd & 3rd Degree
Temperature Setting Burns on Adult Skin
Display
a B c
Gas control valve/therMostat - front vIew