RDZ UMHPI, Руководство пользователя

Страница: 21 / 44

UMHPI
Industrial inverter air/water heat pumps with axial fans
19
NOTE: turning off the unit remotely (onoff-onoff terminals), or by the on board keyboard, or by a remote keyboard does not affect
the DHW operating mode. Once the H10 parameter is set to be 1 , the unit switches to DHW priority as soon as powered. The on
board display shows the temperature measured by the sensor placed inside the DHW water tank. Once the DHW cycle is
completed, the display returns to show the outlet water sensor temperature.
If the remote ON-OFF digital input (DI2-DI2 terminals) is opened, with the enabled domestic hot water production ( H10=1 and
H19=6 ), the display on the unit shows the word " SAN ". Once the DHW cycle is concluded, the display returns to show the code
" E00 " indicating that the remote ON-OFF contact is in open state.
The defrosting function during winter operation mode is always performed on the user side, never on the DHW tank.
7.13 HEATING MODE ON DOMESTIC HOT WATER TANK
If the parameter H83=1 , the unit employs the tank of domestic hot water also for plant side heating. In these conditions,
therefore the relay which controls the DHW valve will be also energized during heating operation and not only in DHW mode.
During defrost period and in cooling mode the valve will be de-energized. When
H83=1 , the DHW auxiliary electric heater can be
enabled also to act as a plant auxiliary electric heater: to this purpose you should set r10=1 and r15=2 (for further settings of the
parameter r15 please see paragraph 8.1.3); also no digital output has to be set for the auxiliary electric heater for the plant.