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5.1
SAFETY PRECAUTIONS
Before operating the
as well as the warnings printed in this manual. Failure to do so can result in unsafe operation of the
water heater resulting in property damage, bodily injury, or death. Should you have any problems
reading, following or difficulty in understanding the instructions in this manual, STOP, and get help
from a qualified person.
To meet building heating and domestic hot water
needs, the controller on this boiler is adjustable
up to 88°C (190°F) and regulate the temperature
of tank. However, domestic hot water is not
controlled
by
this
thermostatic mixing valve located in the upper
section of the unit (see fig.1). Domestic hot
water temperatures over 52°C (125°F) can
cause severe burns instantly or death from
scalds.
50°C (120°F) is the recommended
starting point for setting the control to supply
general-purpose hot water.
Safety and energy conservation are factors to be
considered
when
temperature of the tank and domestic hot water.
The most energy efficient operation will result
when the temperature setting is the lowest that
satisfies both requirements.
The following chart details the 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
COMBOMAX™ Installation, use and care manual
Section 5 : OPERATION
COMBOMAX Ultra 12
controller
but
by
setting
the
operating
boiler, be sure to read and follow these instructions,
TIME
TO
RELATIONSHIP
Temperature
the
50°C (120°F)
52°C (125°F)
54°C (130°F)
57°C (135°F)
60°C (140°F)
63°C (145°F)
66°C (150°F)
68°C (155°F)
With kind permission from the Shriners Burn Institute
The thermostatic controlled mixing valve should
be adjusted by opening a domestic hot water tap,
measuring
thermometer and by adjusting the thermostatically
control mixing valve accordingly.
There is a hot water scald potential if the
thermostatically controlled mixing valve for
reducing point-of-use water temperature is
damaged, not properly working removed or
by-passed.
,
(Revision Sept. 2013)
SCALDING
VS
TEMPERATURE
Time to scalding
Over 5 minutes
1-1/2 to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1-1/2 second
About 1 second
the
water
temperature
DANGER
!
Page
with
a
15.
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