User manual:
RDO3x3A
9
1
Service mode 1: Burner on stage 1 or modulation command full power. Boiler pump is on. The mixing
valve output (return) is in operation. DHW charge is permanently on
.
2
Service mode 2: Burner on stage 2 or modulation command to minimum. Boiler pump is on. The mixing
valve output (return) is in operation. DHW charge is permanently on.
3.3.2
Mode switch 1/2:
Depending on the controller configuration it might be fitted with 1 or 2 such switches.
Operation Switch 1 is always for heating circuit 1 and/or heat generator. Switch 2 is
commanding heating circuit 2.
Manual and service mode ( ): Burner and heating circuit pumps are on. The mixing valve output is on
pause. DHW charging is permanently released (emergency operation).
Solar operation: Collector pump 3 min. on minimum speed, then automatic.
Standby mode: Heating and DHW charge OFF (frost protection is active). Solar operation: Controller
remains on.
Summer operation mode: Heating OFF (frost protection is active). The DHW charge is released
according to the time switch program
.
Automatic mode ("
normal"/"
frost protection") according to the time switch program. During the
OFF-period the lower setpoint for frost protection is active. DHW charge is released according to the time
switch program
.
Automatic mode ("
normal"/" reduced") according to the time switch program (back-up mode
during lowering). DHW charge is released according to the time switch program
.
Continuous operation with
normal temperature setpoint. The time switch program for heating circuits
is not active. DHW charge is released according to the program
.
Continuous operation with reduced temperature setpoint. The time switch program for heating
circuits is not active. DHW charge is released according to the program
.
3.3.3
Temperature setpoint adjustment
This rotary knob is to adjust the temperature setpoint for “
normal” and “ reduced”
operation. The preset value can be adjusted by +3K. Adjustments set at an available
remote control unit are superimposed to each other
.
3.3.4
Single DHW charging
The DHW can be charged independently of the time switch settings. Is no demand for DHW charging i.e.
boiler temperature is high enough, this function is terminated automatically
.
K
2
: Select DHW circuit e.g. [2
]
2
: Release DHW charging; "
" flashes
: Switch selection OFF
3.3.5
Number key: N
o
At the basic indications, the controller type and the SW version number are displayed when this key is
pressed
.
3.3.6
Circuit key: K
At the basic indications, this key switches the display to consecutive circuits of heating, boilers and DHW
.