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DUAL CONTROLS FOR TEMPERATURE – RADIANT PANELS
With the optional kit, a mixed plant can be controlled:
Fan coil (with the set-points seen above)
Radiant panels (with specific radiant set-points)
The radiant set point can be determined in different ways, for further details see the ELECTRICAL CONNECTIONS section.
FUNCTIONING WITH ETHYLENE GLYCOL
The units foreseen to function with glycoled water come out from the premise with standard parameters.
After having added glycol ethylene to water, the technician will properly set the plant.
Parameter to modify
32
Summer set point
77
Antifreeze heater set
80 Antifreeze
alarm
84
Antifreeze pre-alarm threshold
USER REMOTE KEYPAD
The keyboard allows visualizing and changing the functioning conditions of the unit.
The service keyboard is needed to visualize or modify the functioning parameters.
BUTTON FUNCTION
LED MEANING
SANITARY HOT WATER PRODUCTION SIGNAL
For the machine types that manage sanitary hot water production, the status is displayed with the WINTER and SUMMER
operation LEDs:
WINTER
SUMMER
ON FLASHING
ON - OFF
The ON-OFF control from the keyboard allows activating or deactivating the normal functioning of the unit.
SETTING THE OPERATING MODE
COOLING
: to set the SUMMER operating mode, press the
key for a few moments.
When the mode has been activated, the corresponding green led lights up.
HEATING
: to activate the WINTER operating mode, press the
key for a few moments.
When the mode has been activated, the corresponding green led lights up.
MAINTENANCE
: The operating mode leds remain alight even when the machine is in the maintenance status. The
maintenance set-points (if activated) control the water temperature when the unit is OFF or on STANDBY. To do this, the
circulation pump is periodically activated, which tests the water temperature and activates the compressor if required.
HEATING
COOLING
ON / OFF
LONG press
COMFORT mode
1° set - point
ECONOMIC mode
2° set-point
LED operating
check
WINTER funct
SUMMER funct
unit ON / OFF /
MAINTENANCE
(flashing)
ELECTRIC
circuit
alarm
REFRIGERANT
circuit alarm
WATER
circuit
alarm
Summary of Contents for WSAN-XPR 21
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