Hitachi ATW-RTU-02 Guia De Instalacion página 8

Idiomas disponibles
  • ES

Idiomas disponibles

  • ESPAÑOL, página 13
Installation and Operation Manual
8
3.3 Using the Room Unit for Specific Applications
The Room Unit is a versatile controller that can be used to control many different applications. Please note
that when the Room Unit is installed in conjunction with a System Controller, the functionality will differ to
that when installed with a standard boiler system. Most of the functions shown below will be controlled by
the System Controller and be set within its parameters. Therefore, some of the system parameters within
the Room Unit menu will not apply. Please also note other changes to the setting of the optimisation and
proportional band settings as shown in tables 3.5.1 and 3.5.2.
NOTE: In order for the Room Unit to send the heating demand signal to the RF Receiver, it is essential that
the Category 2 parameter 8:Su is set to the correct value (see Installer Parameters Table, 3.5.2 Category
2 – System Settings). Failure to do this will mean that the heating system will not respond to changes in
the setpoint on the Room Unit. Under these circumstances the system will operate with no input from the
Room Unit and may not therefore provide adequate temperature control.
3.4 Using the Special Features of the Room Unit
Special Feature:
Description:
Heating or Cooling
This product can be used for heating or cooling
Operation
applications. If you select cooling mode the control
algorithm and factory default program will be modified. You
can independently modify the heating and cooling profile.
Summer/Winter
This feature moves time automatically on the last Sunday
Auto time change
of March and the last Sunday of October. The feature is
factory enabled.
Temperature Offset
If the Room Unit is located in a particularly hot/cold
location for reliable signal transmission reasons then the
measured/displayed temperature can be adjusted by +/-
3°C. This is useful if the homeowner wants the reading to
match another appliance temperature display.
Upper/Lower
The normal upper temperature limit of 35°C can be
Temperature Limit
reduced to 21°C to save the homeowner energy. The
normal lower limit of 5°C can be increased up to 21°C to
protect inhabitants from cold.
All manuals and user guides at all-guides.com
Enable/Disable
To enable: Set parameter 4:HC
(category 2) to 1.
To enable: Set parameter 3:tC
(category 1) to 1.
Set parameter 12:tO (category
1) to the required offset value.
Set parameter 6:uL (category 1)
to the desired upper limit.
Set parameter 7:LL (category 1)
to the desired lower limit.
loading