20
AWR-MTD2-XE
EN 11/2010
INSTALLER CONNECTIONS
U I A
Supplementary heating always enabled
Supplementary heating by boiler is enabled for all outside
air temperatures.
To enable heating at all times set parameter 0306 = 0 and
010H = 0
Boiler operation reflects the trend in water temperature, as
shown on the graph in figure 4.
Description
Enable electric heater
0 = Heater not enabled
1 = Heater enabled
Activation Boiler
0 = Boiler not enabled
1 = Boiler enabled
Type of boiler operation
0 = Supplementary
1 = Replacement
Activation with low outside air
temperature
0 = Function not enabled
1 = Function enabled
Outside air temperature to enable
boiler
Minimum outside air temperature
for heat pump operation (make
sure the value set is the same as
shown in the table)
Boiler activation delay time (allows
the heat pump to reach steady
operation and thus avoid activat-
ing the boiler when not needed)
Integration time to activate boiler
Menu
Mn03
Mn03
Mn01
Mn03
Mn03
Mn03
Mn06
Mn06
Parameter
no.
0300
0301
010H
0306
0307
0311
0618
0619
Value to be
set
0
1
0
0
Example
-5°C
-15
60
600
UOM
°C
°C
min.
°C*sec
3
4
Boiler operating parameters in SUPPLEMENTARY mode
when always ENABLED
Once the boiler has been enabled, supplementary heating is activated when the
integration time set for parameter 0619 is reached and the delay time 0618 has
elapsed. The delay time is ignored when the unit is first started.
Example:
Value 0619 = 600°C*sec
Outlet temperature set point= 50°C
Actual temperature = 40°C
(50 – 40) x 60 sec = 600°Csec. ----> Boiler ON
Low values of 0619 mean frequent activation of the boiler.
Too high values of 0619 mean long delays in activating the boiler
Outside air T
OFF
Enabled
Boiler
0304 Outside temperature to
enable boiler
3°C
OFF
ON
ON
OFF
Compressor
Boiler
Boiler activation delay time 0618
Integration time 0619
System outlet temperature
set point
Actual water
temperature
System HP control
hysteresis
Set the parameters following the sequence described in
the table
Summary of Contents for AWR-MTD2-XE
Page 69: ......
