44
Temperatures Menu
Description/Action
Display
Use the "+" and "-" Buttons to change the current setting.
Press "ACCEPT" to save the new setting. Press "BACK" to discard
changes and return to the previously saved setting.
Note:
Use this procedure to change the Differential setting and
other adjustable user settings in the control system menus.
ACCEPT
BACK
Operating Setpoint
MIN
90
°
F
MAX
180
°
F
120
°
F
•
Differential Mode - This mode is enabled at the factory and
automatically sets the differential to 8 F. If a lower differential is
required, select the Differential option below to manually reset
the differential to desired setting.
•
Differential - Adjustable user setting that changes the tank
temperature differential with a range of 2° to 20°F. The factory
setting is 8°F.
•
Tank Probe Offset - adjustable user setting, range -5° to +5°
(factory setting 0°).
Note:
These settings should only be used if 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 temperature from the temperature probe
is 120°F (49°C) and the Offset setting is adjusted to a value
other than 0°, the control system would calibrate or “offset”
the sensed temperature from the probe. 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 as described in Operating Set
Point and Differential Adjustment on page 40.
Temperatures
HELP
BACK
Operating Setpoint
120°F >
Differential Mode
Auto >
Differential
8°F >
Tank Probe Offset
0°F >
Summary of Contents for 300 Series
Page 66: ...66 NOTES NOTES...
Page 67: ...67 NOTES NOTES...
