State SW 37-670 - Manual (Page 16)

16
teMperature controls
The boilers covered in this instruction manual are equipped with
(adjustable) thermostat or step control to regulate water temperature
and other controls to provide safety features. See the wiring diagrams
on page 13 & 14 and/or literature included with this manual for
additional information.
Hot water temperatures required for automatic dishwasher and
laundry use can cause scald burns resulting in serious personal injury
and/or death. The temperature at which injury occurs varies with the
person’s age and duration of exposure. The slower response time
of children, the elderly or disabled persons increases the hazards to
them. Never allow small children to use a hot water tap or draw their
own bath water. Never leave a child or disabled person unattended
in a bathtub or shower. The boiler should be located in an area where
the general public does not have access to set temperatures.
Figure 1. shows the approximate time-to-burn relationship for normal
adult skin.
Water Temperature
Time to Produce 2nd & 3rd
Degree Burns on Adult Skin
180°F (82°C)
160°F (82°C)
150°F (82°C)
140°F (82°C)
130°F (82°C)
120°F (82°C)
80°F (82°C)
Nearly Instantaneous
About 1/2 second
About 1-1/2 seconds
Less than 5 seconds
About 30 seconds
More than 5 minutes
- - - - - - - - - - - - - - - - -
fIGure 1.
• Additional instructional literature is provided with the boiler for
adjusting this control.
Always close and lock the cabinet door after making a temperature
adjustment. Turn on electricity.
draInInG
The boiler must be drained if it is to be shut down and exposed to
freezing temperatures. Maintenance and service procedures may
also require draining the boiler.
1. Turn off the electrical disconnect switch.
2. Open a nearby outlet until the water is no longer hot and close the
make-up water valve and system valves as necessary.
3. Open a nearby outlet to vent the parts of the system being drained.
4. Open the boiler drain valve.
5. If the boiler is being drained for an extended shutdown, it is
suggested the drain valve be left open during this period.
• Follow FILLING instructions to restore boiler to service.