Installation Manual

46
TEMPERATURES MENU (CONT)
DESCRIPTION/ACTION DISPLAY
• Tank Temperature - non adjustable - control system
sensed temperature (averaged from upper and lower
temperature probes).
• Upper Temperature - non adjustable - control system
sensed temperature from the Upper Temperature Probe.
• Lower Temperature - non adjustable - control system
sensed temperature from the Lower Temperature Probe.
• Tank Probe Offset - adjustable user setting, range -5° to
+5° (factory setting 0°).
NOTE: These settings should only be used if the hot water
supply temperature varies greatly from the Operating Set
Point setting.
The Tank Probe Offset is used to calibrate control system
temperature sensing. This can improve the precision of
temperature control in the storage tank and at points of use.
This feature can also be used to compensate for building
recirculation loops (hot water returning to the storage tank)
that may cause the heating cycles to terminate prematurely.
Example: If the current sensed temperature from a
temperature probe is 120°F (49°C) and the Offset setting for
that probe is adjusted to a value other than 0°, the control
system would calibrate or “offset” the sensed temperature
from the probe and the averaged tank temperature. Heating
cycles would be activated and deactivated based on the
calibrated (offset) temperature. A -5° setting results in +5°
hotter water.
These settings are adjusted in the same way described
for the Operating Set Point And Differential Adjustment on
page 45.
Operating Set Point 140°F
Differential 8°F
Tank Temperature 120°F
Upper Temperature 122°F
Lower Temperature 118°F
Tank Probe Offset 0°F
CHANGE BACK HELP
Temperatures
HEATER STATUS MENU
DESCRIPTION/ACTION DISPLAY
Select Heater Status from the Main Menu and press the
Operational Button under "SELECT" to enter this menu. This
menu contains non adjustable operational information. Use the
Up & Down Buttons to navigate the menu.
• Status - displays the current Operating State, see Table 17
on page 44.
• ECO Contact, Low Gas PS, Blocked Inlet PS, Blocked
Outlet PS, Blower Prover PS - displays the current state
of the switch contacts; open or closed.
• Igniter On, Gas Valve On - displays whether or not the
control system is currently energizing these water heater
components; yes = energized, no = de-energized.
• Flame Detected - displays whether or not the control
system has detected Main Burner ame during ignition from
the ame sensor.
Top of Menu
Status Standby
ECO Contact Closed
Low Gas PS Closed
Blocked Inlet PS Closed
Blocked Outlet PS Closed
Blower Prover PS Open
Igniter On No
BACK HELP
Heater Status
Bottom of Menu
Gas Valve On No
Flame Detected No
BACK HELP
Heater Status