51
EN 11/2010
AWR-MTD2-XE
CONTROL AND OPERATING CHARACTERISTICS
A
Automatic mode changeover based on outside
temperature
In
mode, the operating mode (heating / cooling)
changes automatically, avoiding the need for the user to
change the mode manually.
Mode changeover is based on the diagram shown in the fig-
ure.
The centre zone A corresponds to an area of inactivity, as
the outside climate conditions mean neither heating nor
cooling is required.
Description
Automatic mode changeover set
point in HEATING
Automatic mode changeover dif-
ferential in HEATING
Automatic mode changeover set
point in COOLING
Automatic mode changeover dif-
ferential in COOLING
Menu
Mn01
Mn01
Mn01
Mn01
Parameter
no.
0106
0107
0108
0109
Default
16
2
24
2
UOM
°C
°C
°C
°C
0106= 16°C
0106+0107=18°C
Heating
ON
OFF
Cooling
0108-0109=24°C
Outside temp.
0108=26°C
A
System pump operation
When reaching the system water set point, the compressor
stops and the system pump is activated periodically, so as
to minimise energy consumption.
Pump operating time can be selected using parameter
0147, while the interval between one sniffing cycle and the
next is set using parameter 0148.
Intermittent activation of system pump operation can be
selected using parameter 0143 (0= system pump always on
to, 1=system pump activated at intervals).
In systems with fan coils, the time between one sniffing
cycle and the next should be reduced in order to avoid cool-
ing excessive of the water, and if the system water content
is equal to the minimum value shown in the paragraph on
"water connections", parameter 0143 should be set to 0.
Summary of Contents for AWR-MTD2-XE
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