Crown Mega-Stor 2 Installation Manual

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T&P valve discharge to the outdoors or to other locations where water in this pipe could freeze or become blocked by
debris. Make sure all discharge piping is pitched so as to allow complete drainage of any water in the line.
h) Heat Trap (Optional) - The heat trap retards the migration of heat from the IWH up the hot water supply pipe.
i) Vacuum Breaker (Recommended) - This valve protects the IWH in the event that the pressure in the tank falls below
atmospheric. Use a Watts N-36 or equivalent.
PIPING WITH A “TEMPERATURE LIMITING VALVE”
Usually, the maximum temperature of the outlet water will stay near the setting of the control. In some cases, however, hot water
usagepatternscancausetheoutletwatertemperaturetorisesignicantlyabovethecontrolsetting.Thetemperatureofwater
goingtothexturesmaybemorecarefullycontrolledthroughtheuseofathermostaticmixingvalve.Thisdeviceblendsa
controlled amount of cold water with the hot water leaving the IWH so that water at a more constant temperature exits the mixing
valve. Typical thermostatic mixing valve piping is illustrated in Figure 5.8. Consult a licensed plumber or the local plumbing
authority for requirements in your area.
FIGURE 5.5: AQUASTAT INSTALLATION
WARNING
A thermostatic mixing valve does not eliminate the risk of scalding.
Set the thermostat as low as practical.
Feel water before bathing or showering.
If anti-scald or antichill protection is required, use devices specically designed for such service.
Install these devices in accordance with their manufacturer’s instructions.