7
GENERAL SAFETY
To meet commercial hot water use needs, the high
limit safety control on this water heater will shut off the
main gas valve before the outlet temperature reach-
es 210°F. However, water temperatures over 125°F
can cause instant severe burns or death from scalds.
When supplying general-purpose hot water, the rec-
ommended initial setting for the temperature control
is 125°F.
This section applies to Hot Water Supply Boilers and
Water temperature over 125°F can
cause instant severe burns or death
from scalds.
Children, disabled, and elderly are
at highest risk of being scalded.
See instruction manual before set-
ting temperature at water heater.
Feel water before bathing or show-
ering.
Temperature limiting valves are
available, see manual.
General Information
Table A: Basic Data
IGNITER
FLAME SENSOR
BURNER FLAME
VIEWING PORT
BURNER
FRONT OF HEATER
OUTDOOR
AIR COVER
SHOWN
Top panel, blower and gas train omitted for clarity
Fig. 4: Component Locations – Top
Max Min Flue Intake
2505 2501 2001
0
3005 3000 2401
0
3505 3500 2801
2
4005 4000 5601
2
Model
No.
MBTUH Input Vent Size (in)
Hot Water Heaters ONLY. For sanitary rinse appli-
ca-tions where outlet temperatures of 180°F to 195°F
are required, a boiler is recommended since the 210°F
limit on water heaters will NOT allow the heater to
maintain these desired sanitary rinse temperatures.
Safety and energy conservation are factors to be
considered when setting the water temperature on the
thermostat. The most energy-efficient operation will
result when the temperature setting is the lowest that
satisfies the needs of the application.
Water temperature over 125°F can cause instant
severe burns or death from scalds. Children, disabled
and elderly are at highest risk of being scalded.
• Feel water before bathing or showering.
• Temperature limiting valves are available.
Maximum water temperatures occur just after the
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