NTI TRX150, Руководство пользователя

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9
Part 1 - General Safety Information
CAUTION
WARNING
I. High Elevation Installations
Combustion - At elevations above 2000 ft, the combustion
of the boiler must be checked with a calibrated combustion
analyzer to ensure safe and reliable operation.
It is the Installer’s
responsibility to check and adjust the combustion in
accordance with this manual. Failure to follow these instructions
may result in property damage, serious personal injury, or death.
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.
On TRX150 / TRX199 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.
Approximate Time / Temperature Relationships in Scalds
120 o F More than 5 minutes
125 o F 1 1/2 to 2 minutes
130 o F About 30 seconds
135 o F About 10 seconds
140 o F Less than 5 seconds
145 o F Less than 3 seconds
150 o F About 1 1/2 seconds
155 o F About 1 second
Table 3 - Time and Temperature Relationship in Scalds
This boiler is designed to operate at its maximum listed capacity in
installations located at 0 - 2000 ft above Sea Level. Since the density
of air decreases as elevation increases, maximum specified capacity
should be de-rated for elevations above 2000 ft (610 m) in accordance
with the table below.
Elevations
2001 ft
(610 m)
3000 ft
(914 m)
4000 ft
(1219 m)
4500 ft
(1372 m)
5000 ft
(1524 m)
In Canada
1
,
de-rate by:
10% 10% 10% 10% may vary
In USA
2
,
de-rate by:
- 12% 16% 18% 20%
NOTES:
1
Canada: Elevations between 2000 - 4500 ft (610 - 1372 m), de-rate by 10%.
Consult local authorities for de-rating for elevations above 4500 ft (1372 m).
2
USA: If elevation is above 2000 ft (610 m), de-rate capacity by 4% for every
1000 ft (305 m).
Table 4 - De-Rate % for High Elevations