35
SETUP OF THE SYSTEM
To determine whether the AUTO mode is effective, go to MENU> FOR SERVICEMAN>
AUTO MODE SETTING. Press OK. The following page is displayed.
To enter the TEMP.TYPE SETTING, go to MENU> FOR SERVICEMAN> TEMP. TYPE
SETTING. Press OK. The following page is displayed:
Use ◄ ► and ▼ ▲ to scroll and adjust the parameter.
T4AUTOCMIN is the minimum operating outdoor air temperature for cooling in auto mode. The unit will turn off if the outdoor air
temperature is lower when in space cooling operation.
T4AUTOHMAX is the maximum operating outdoor air temperature for heating in auto mode. The unit will turn off if the outdoor air
temperature is higher when in space heating operation.
The relationship between heat pump operation and outdoor air temperature is described in the picture below
If you set WATER FLOW TEMP. to YES, and set ROOM TEMP. to NON, the water fl ow
temperature will be displayed on the home page, and the water fl ow temperature will work
as the target temperature.
If you set WATER FLOW TEMP. to YES, and set ROOM TEMP. to YES, then the water
temperature will be displayed on the home page. Both water temperature and room tem-
perature will be detected and when either the water temperature or the room temperature
reaches the target temperature the unit will turn off.
In this state, the fi rst target outlet water temperature can be set in the main page, the
second one can be calculated from the climate-related curves. In heat mode, the higher
one will be the real target outlet temperature, while in cool mode, the lower one will be
selected.
In the picture, AHS is an additional heating source. IBH is a backup heater in the unit.
AUTO mode setting
Controlling AUTO mode typically consists of the following:
1. T4AUTOCMIN:setting the minimum operating outdoor air temperature for cooling
2. T4AUTOHMAX: setting the maximum operating outdoor air temperature for heating
Temp. Type setting (to activate the internal temperature probe of the controller as room thermostat)
4 AUTO MODE SETTING
T4AUTOCMIN
T4AUTOHMAX
25
°C
17
°C
SCROLL
COOL
OFF
T4
T4HMIN
T4CMAX
T4AUTOCMIN
OFF
T4AUTOHMAX
Heat mode
by IBH or AHS
Heat mode
by heat pump
Heat mode
by IBH or AHS
Heat mode
by heat pump
5 TEMP. TYPE SETTING
WATER FLOW TEMP.
ROOM TEMP.
SCROLL
YES
NON
YES
NON
ON
TANK
55
c
SET
c
OFF
DHWMAIN
21: 55 08 - 08 - 2015 SAT.
18
TANK
55
c
12
SET
c
ON
ON
DHWMAIN
21: 55 08 - 08 - 2015 SAT.
Through this submenu, you can defi ne whether the unit will operate according to water setpoint sent to the system and
/ or based on the room temperature setpoint.
NOTE
The TEMP. TYPE SETTING is used for selecting whether the water fl ow temperature or room temperature to control the heat pump
is ON/OFF. When ROOM TEMP. is enabled, the target outlet water temperature will be calculated from climate-related curves.
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