48
USER SETTINGS & CONTROL SYSTEM MENUS
TEMPERATURES MENU
Operating Set Point and Differential Adjustment
The Operating Set Point is adjustable from 90°F (42°C) to 180°F
(82°C). The factory setting is 120°F (49°C). The Differential is
adjustable from 2° to 20°. The factory setting is 8°. These user
settings are accessed from the Temperatures menu. The following
instructions explain how to adjust these settings and navigate the
control system menus.
Temperatures Menu
Description/Action
Display
From the Desktop screen, press MENU. The "Main Menu" screen will be
displayed.
Tank Temperature
71°F
Operating Setpoint
120°F
Status: Standby
HELP
MANUFACTURER /MODEL INFORMATION
MENU
The Main Menu is where all control system menus are listed, see
for a complete list and description of control system menus.
Use the Up and Down slidebar to view all control system menus from the
Main Menu.
Press "Temperatures" to access the Temperature menu.
Main Menu
HELP
BACK
Temperatures >
Heater Status >
Display Settings >
Heater Information >
Current Fault >
Press "Operating Setpoint" to access the temperature setpoint menu.
Press "CHANGE" to activate the adjustment mode for this menu item.
Note:
Higher Temperature settings increase wear and operating
costs. Set the Operating Set Point to the lowest setting which
produces an acceptable hot water supply. This will always
provide the most energy efficient operation and longer life.
Temperatures
HELP
BACK
Operating Setpoint
120°F >
Differential
8°F >
Tank Temperature
120°F
Tank Probe Offset
0°F >
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
When the water temperature, sensed by the control system
from the two (upper and lower) Temperature Probes, reaches
the Operating Set Point, the control system ends the heating
cycle. A heating cycle is activated again when the sensed water
temperature drops below the Operating Set Point minus the
Differential setting.
Note:
Lower Differential settings may cause excessive
heating cycles (short-cycling) which can cause
premature failure of heater components. Set the
Differential at the highest setting which produces
an acceptable hot water supply. Set the Operating
Set Point to the lowest setting which produces an
acceptable hot water supply for most efficient use.
Summary of Contents for SUF 60120 THRU
Page 67: ...67 WIRING DIAGRAM Figure 67 Wiring Diagram...
Page 77: ...77 NOTES...
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