Water Systems
9.6
9.3.5.1 Water Heater Temperature Adjustment
( Thermostatic Mixing Valve)
1. Let the water flow for at least 2 minutes to allow sup-
ply
temperature to stablize.
2. Calibrate the mixed water outlet temperature by plac-
ing
a thermometer in the mixed water stream.
3. To adjust the setting of the valve, loosen locking cap
with hex wrench, see figure 9.5. Cap must be lifted 1/4”
to adjust temperature. To increase the temperature, turn
counterclockwise. To decrease temperature, turn clock-
wise
4. Lower handle and tighten screw.
5. Check outlet temperature.
NOTE: Refer to User’s manual in OEM Packet.
Hotter
3
/
32
" Hex Wrench
Turn
Colder
Unscrew, lift
cap to adjust
Figure 9.5.0 - Temperature Adjustment
Table 1. Scald Time (Hot Water), References Only
Temperature Max duration until injury
155F (68.3C) 1 second
145F (62.9C) 3 seconds
135F (57.2C) 10 seconds
130F (54.4C) 30 seconds
125F (51.6C) 2 minutes
120F (48.8C)
5 minutes
Hydrogen gas may form in water heater if not used.
Open valves. Do not smoke or use electrical appli-
ances for several minutes before use.
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