2
IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING.
Safety and energy conservation are factors to be
considered when selecting the water temperature setting
of a water heater. Water temperatures above 125°F
(52°C) can cause severe burns or death from scalding.
Be sure to read and follow the warning outlined in the
label pictured below.
WATER TEMPERATURE SETTING
For your safety, the information in these instructions and the instructions provided with the water heater must be
followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury,
or loss of life.
Improper adjustment, alteration, service or maintenance can cause property damage, personal injury or death.
Only qualified service personnel should install or make adjustments.
Water
Temperature
Time To Produce a Serious Burn
120°F (49°C)
More than 5 minutes
125°F (52°C)
11/2 to 2 minutes
130°F (54°C)
About 30 seconds
135°F (57°C)
About 10 seconds
140°F (60°C)
Less than 5 seconds
145°F (63°C)
Less than 3 seconds
150°F (66°C)
About 11/2 seconds
155°F (68°C)
About 1 second
Table courtesy of Shriners Burn Institute
Time/Temperature Relationship in Scalds
D A N G E R
!
HOT
Water temperature over 125
°
can cause severe burns
instantly or death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
F (52°C)
The time/temperature relationship table shown above
may be used as a guide in determining the proper water
temperature for your home or any other application.
!
DANGER: Hotter water increases the risk of hot water
scalds.
!
DANGER: Households with small children, disabled,
or elderly persons may require a 120°F (49°C) or lower
temperature setting to prevent contact with “HOT” water.
Notice:
When this water heater is supplying general
purpose hot water requirements 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.
WARNING!
!
!
DANGER!
This system is designed to operate up to 20 tankless water heaters in a parallel manifold system. All tankless
water heaters on a single system and connected to this controller must be a like model. Do not connect water
heaters of different sizes, capacities, or types, to this system.
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Summary of Contents for PH2-20R DVSN
Page 158: ... 158 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 159: ... 159 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 160: ... 160 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 162: ... 162 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 163: ... 163 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 164: ... 164 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 166: ...Schematic Disassembly PHH 32RDV PHH 25RDV 166 ...
Page 167: ...Schematic Disassembly PHH 32RDV PHH 25RDV 167 ...
Page 169: ... 169 Schematic Disassembly PHH 32ROF PHH 25ROF ...