Water Temperature Adjustment And Scalding; High Elevation Installations - NTI TRX085 Installation, Start-Up, Maintenance, Parts, Warranty

CAUTION
On TRX085 / TRX120 Models ONLY
If the boiler is to be used only in Heating Mode (not connected
to an indirect water heater), the electrical connection of the
3-way valve motor MUST BE DISCONNECTED while the boiler
is operating in central heating mode. This will lock the valve
motor in central heating mode and ensure freeze protection
operates properly. Failure to disconnect the valve may disable
boiler freeze protection and result in property damage.
H. Water Temperature Adjustment and Scalding
This boiler can deliver
scalding water. Be careful
whenever using hot water
to avoid scalding injury.
Certain appliances such as
dishwashers and automatic
clothes washers may
require increased water
temperatures. By setting the
thermostat on this boiler to
obtain the increased water
temperature required by
these appliances you may
create the potential for scald
injury.
To protect against injury,
install a mixing valve in the
water system. This valve
will reduce point of use
discharge temperatures by
mixing cold and hot water
in branch supply lines.
Such valves are available
from your local plumbing
supplier.
Table 3 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.
Approximate Time / Temperature Relationships in Scalds
120 o F
125 o F
130 o F
135 o F
140 o F
145 o F
150 o F
155 o F
Table 3 - Time and Temperature Relationship in Scalds
More than 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 seconds
About 1 second
Part 1 - General Safety Information
I. High Elevation Installations
WARNING
Natural gas at high elevation might contain less heating value than
the typical 1,000 BTU/cu ft and therefore can cause an improper
air / gas mixture leading to improper combustion. For natural gas
installations above 3,000 ft, call your gas provider to determine the
heating value of the supplied natural gas.
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