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Display Key and Features
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Display Key:
Wake
: the time when the water heater setpoint should be raised to an appropriate temperature
for its use.
Leave
: the time when the water heater setpoint should be lowered when little to no hot water is
needed.
Return
: the time when the water heater setpoint should be raised for your return and eventual
need for hot water.
Sleep
: the time when the water heater setpoint should be lowered when no hot water is needed
for the day.
Stdby (Standby)
: the water heater is not calling for heat (the water heater burner is not on).
On
: the water heater is calling for heat (the water heater burner is on).
Low Bat (Low Battery)
: the Setback Control batteries are low and should be changed.
Service Needed
: a fault has occurred and a serviceable issue needs to be addressed on the
water heater or control. Contact a qualified service technician.
Display Features:
When the Setback Control is operating normally and is operating in its set schedule (no
temporary or permanent hold set), the water temperature setpoint and time will be alternately
shown. The current period water temperature setpoint will be shown for approximately five
seconds, followed by the current time for approximately five seconds.
If the Setback Control has been set to a different water temperature, as part of a temporary or
permanent hold, the hold water temperature will only be shown.
One of the features on the Setback Control is the display of the approximate hot water volume
contained in the water heater. A sophisticated algorithm in the Setback Control determines the
hot water volume based on the water heater gas control setpoint. The capacity shown is not
based on the setpoints that are a part of the Setback Control schedule. The capacity is based
off from the setpoint on the gas control. A maximum of six bars can be shown.
If six bars are shown, this means the maximum hot water is available for use given the current
control setpoint. Alternatively, if only two bars are shown, this means that only one-third of the
maximum hot water is available for use given the current control setpoint. The Setback Control
assumes hot water over 90°F (32°C) is of sufficient temperature to be used.
The Setback Control water temperatures can be set to a maximum temperature the same as
that set on the gas control.