General Safety - Raypak XTherm 1005A Installation And Operation Manual

2.5.1. General Information
Model
No.
1005A
1505A
2005A

2.6. General Safety

This section applies to Hot Water Supply Boilers and Hot
Water Heaters ONLY.
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 reaches 210°F
(99°C). However, water temperatures over 125°F (52°C) can
cause instant severe burns or death from scalds. When
supplying general purpose hot water, the recommended
initial setting for the temperature control is 125°F (52°C).
For sanitary rinse applications where outlet temperatures
of 180°F (82°C) to 195°F (91°C) are required, a boiler is
required because the 210°F (99°C) 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 (52°C) can cause instant
severe burns or death from scalds. Children, disabled and
elderly are at highest risk of being scalded. See Table B.
• Feel water before bathing or showering.
• Temperature limiting valves are available.
NOTE: When this water heater is supplying general-
purpose hot water for use by individuals, a thermostatically-
controlled mixing valve for reducing point-of-use water
temperature is recommended to reduce the risk of scald
injury. Contact a licensed plumber or the local plumbing
authority for further information.
Maximum water temperatures occur just after the heater's
burner has shut off. To determine the water temperature
being delivered, turn on a hot water faucet and place
a thermometer in the hot water stream and read the
thermometer.
CAUTION: Hotter water increases the risk of scalding!
A
There is a hot water scald potential if the thermostat is
set too high.
6
Input
MBTUH (kW)
Max Min
999 (293) 140 (41.0)
1500 (440) 210 (61.6)
1999 (586) 280 (82.1)
Table A.
Gas Conn
Water Conn
(NPT)
(NPT)
Nat
2-1/2" 1-1/4"
2-1/2" 1-1/4"
2-1/2" 2"
Basic Product Data
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.
Water Temp.
120°F (49°C)
125°F (52°C)
130°F (54°C)
135°F (57°C)
140°F (60°C)
145°F (63°C)
150°F (66°C)
155°F (68°C)
Table B. Time to Produce Serious Burn
Vent Size Comb Air
LP In. (mm) In. (mm)
1" 6 (152) 6 (152)
1" 8 (203) 8 (203)
1" 8 (203) 8 (203)
Time To Produce Serious Burn
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 seconds