Installation / Operation Instruction Manual

25
Operating Instructions continued-
Table 8 details the approximate relationship of water temperature and
time with regard to scald injury and may be used as a guide in
determining the safest water temperature for your applications.
Operating Instructions continued-
CAUTION
Before adjusting the thermostat, turn off all power supplied to the
indirect-fired water heater.
The potable water temperature can be changed by adjusting the
thermostat. Before any work is done on the water heater, disconnect
all power to the water heater and heat source (boiler) by opening the
switch(s) at the main electrical circuit breaker or fuse box. Remove
the access panel and fold the insulation outward away from the
control. Adjust the thermostat dial using a screwdriver until the
minimum acceptable temperature is achieved. The thermostat has
been factory preset to 120°F (49°C). Remember that lower
temperature settings are more energy efficient. Rotate the
temperature dial clockwise
to increase water temperature.
Rotate the thermostat dial counter-clockwise
to decrease the
temperature setting. Replace the insulation making sure that the
control is well covered and that the plastic terminal shield has not
been displaced. Replace the access panel. The water heater is now
ready for operation and the main switch can be closed.
Figure 7 - Scald Warning
APPROXIMATE
TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F
More than 5 minutes
125°F
1 ½ to 2 minutes
130°F
About 30 seconds
135°F
About 10 seconds
140°F
Less than 5 seconds
145°F
Less than 3 seconds
150°F
About 1 ½ seconds
155°F
About 1 second
Table 8 – Scald Relationships