DeLonghi AWR-MTD2-XE, Installation, Operation And Service Manual

Page: 18 / 70

18 AWR-MTD2-XE EN 11/2010
INSTALLER CONNECTIONS I A
Supplementary heating always enabled
Supplementary heating with the electric heater is enabled
for all outside air temperatures.
To enable heating at all times set parameter 0303 = 0 and
010G = 0
Electric heater operation reflects the trend in water outlet
temperature, as shown on the graph in figure 4.
Once the heater is enabled, supplementary heating is activated when the integra-
tion time set for parameter 0617 is reached and the delay time 0616 has elapsed.
The delay time is ignored when the unit is first started.
Example:
Value 0617 = 600°C*sec
Outlet temperature set point= 50°C
Actual temperature = 40°C
(50 – 40) x 60 sec = 600°Csec. ----> Electric heater ON
Low values of 0617 mean frequent activation of the heater.
Too high values of 0617 mean long delays in activating the heater
Description
Activation electrical heater
0 = Electrical Heater not enabled
1 = Electrical Heater enabled
Type of outlet electric heater oper-
ation
0 = Supplementary
1 = Replacement
Enable boiler
0 = Boiler not enabled
1 = Boiler enabled
Activation with low outside air
temperature
0 = Function not enabled
1 = Function enabled
Minimum outside air temperature
for heat pump operation (make
sure the value set is the same as
shown in the table)
Electric heater delay time
(allows the heat pump to reach
steady operation and thus avoid
activating the heater when not
needed)
Integration time to activate outlet
electric heaters
Menu
Mn03
Mn01
Mn03
Mn03
Mn03
Mn06
Mn06
Parameter
no
0300
010G
0301
0303
0311
0616
0617
Value to be
set
1*
0
0*
0
-15
60
600
UOM
°C
min.
°C*sec
3 4
Outlet electric heater operating parameters in SUPPLE-
MENTARY mode when always ENABLED
Outside air T
OFF
Enabled
Outlet
heater
0304 Outside temperature
to enable outlet heaters
3°C
OFF
ON
ON
OFF
Compressor
Heater
Electric heater activation delay time 0616
Integration time 0617
System water control
set point
Actual water
temperature
System HP control
hysteresis
Set the parameters following the sequence described in
the table