PVI Industries PV500-40 User Manual
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PV500-40 01/25/11
1. DISPLAY AND INTERFACE
1.1 KEYBOARD
BUTTONS
SET
-
Displays and modifies the temperature set points.
-
In programming mode, it selects a parameter or confirms an operation.
UP
-
Displays and modifies the energy saving (Night Time setback) settings.
-
In programming mode, it browses the parameter codes or increases a
displayed value.
displayed value.
DOWN
-
Displays the working hours of the load relays.
-
In programming mode, it browses the parameter codes or decreases a
displayed value.
displayed value.
CLOCK
-
Changes lower display from Probe 1 (Depending on product, probe 1 may
display lower tank/inlet or upper tank/outlet temperature or may not be used.) to
current time and day.
display lower tank/inlet or upper tank/outlet temperature or may not be used.) to
current time and day.
EXT
-
Changes upper display from Outlet Temperature to Probe 3 (Optional
Temperature Probe. Used for Outdoor Reset on Boilers) and displays the
temperature difference of the Inlet Temperature minus Outlet temperature.
In programming mode it sets the 4-20mA output (password is required).
Temperature Probe. Used for Outdoor Reset on Boilers) and displays the
temperature difference of the Inlet Temperature minus Outlet temperature.
In programming mode it sets the 4-20mA output (password is required).
ON/OFF
-
Switches the control ON or OFF.
1.2 KEY
COMBINATIONS
+
To lock and unlock the keyboard.
+
To enter the programming mode.
+
To exit the programming mode.
1.3
LED ICON LEGEND
LED MODE
Function
ON
Temperatures are displayed in Fahrenheit degree
ON
Temperatures are displayed in Celsius degree
Flashing
Call for heat time delay
ON
Call for heat is on
Flashing
Second stage time delay (On 2-stage units only)
ON
Second stage on
Flashing
Freeze protection time delay
ON
Freeze protection on
ON
Modulation output signal is in manual control mode
ON
Modulation output signal is automatically controlled by temperature probe 1
Ext
ON
The outside temperature is displayed
FLASHING
Low gas pressure alarm
FLASHING
High gas pressure alarm
FLASHING Low-water
alarm
ON
Lower LED readout is displaying the clock
FLASHING Alarm
signal
FLASHING
Programmed working hours limit is exceeded
ON
Working hours are displayed in Lower LED readout
ES
ON
The energy saving function is running