A.O. Smith 300 Series, Инструкция по эксплуатации

Страница: 43 / 68

43
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 160°F
(71°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.
When the water temperature, sensed by the control system from the
Temperature Probe, 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.
Burn Hazard
To reduce the risk of unusually hot
water reaching the fixtures in the
house, install thermostatic mixing
valves at each point of use.
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.
Temperatures Menu
Description/Action Display
From the Desktop screen, press MENU. The "Main Menu" screen
will be displayed.
Operating Setpoint 120°F
Status: Standby
HELP
MANUFACTURER /MODEL INFORMATION
MENU
The Main Menu is where all control system menus are listed. See
Table 13 (page 42) 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 Mode Auto >
Differential 8°F >
Tank Probe Offset 0°F >