Temperature Adjustment
The thermostat of this water heater has been factory set at
its lowest position. It is adjustable and must be set to the
desired temperature setting. The preferred starting point is
49°C (120°F). Turn the water temperature dial clockwise
to decrease the temperature, or counterclockwise
to
increase the temperature.
Figures 18 & 19 show the various thermostat settings. 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 17°C (30°F). If you experience
this type of use you should consider adding a mixing valve
or using lower temperature settings to reduce scald haz-
ards. Should overheating occur or the gas supply fail to shut
off, turn off the manual gas control valve to the appliance
and call for service.
Valves for reducing the point-of-use temperature by mixing
cold and hot water are available (see Figure 11). Also avail-
able are inexpensive devices that attach to faucets to limit
hot water temperatures. Contact a licensed plumber or the
local plumbing authority.
Note:
During low demand periods, a lower thermostat set-
ting will reduce energy losses and may satisfy your normal
hot water needs. If hot water use is expected to be more
than normal, a higher thermostat setting may be required to
meet the increased demand. When leaving your home for
extended periods (e.g., vacations etc.) turn the temperature
dial to its lowest setting. This will maintain the water at low
temperatures with minimum energy losses and prevent the
tank from freezing during cold weather.
GAS CONTROL
KNOB
49°C (120°F) MARK
Figure 18
White-Rodgers Gas Control/Thermostat
Settings
– 16 –
Figure 19
Honeywell Control (24 Volt)
ON-OFF SWITCH
49°C (120°F) MARK
STATUS LED
TEMPERATURE
DIAL
