Domestic Hot Water Heat Pump Service Manual
31
7.12 D27 SG Ready
A smart grid is an
electrical grid
which includes a variety of operational and energy
measures including
smart meters
,
smart appliances
,
renewable energy
resources,
and energy efficient resources.
Electronic power conditioning and control of the
production and distribution of electricity are important aspects of the smart grid.
The DHW-HP is controlled based on inputs received from the Smart Grid energy
meter on QA1and set up using installer menu D27.
Code
Set point
name
Description
Range
Factory
setting
D27
SG
Ready
The SG ready function can be activated by the installer here. Three
possible modes can be selected. This function allows the start of the heat
pump from an external access (See QA1).
SG ready is not active if there is not external input (SG1 OFF, SG2 OFF).
OFF
OFF
The heat pump and electric heater must start, if below the max water
temperature allowed in the tank. Both Heat Pump and Electric heater are
forced to operate (SG1 ON and SG2 ON).
SG
BOOST
The heat pump operates minimizing costs, only the heat pump is activated
(SG1 OFF, SG2 ON).
SG ECO
The unit can be stopped even if there is a need for hot water (SG1 ON,
SG2 OFF).
SG
BLOCK
OFF
<53
19
ON
T Extr
a Temper
atur
e °
C
Ta
nk T
°C
25
21
HP Operation
20
65
53
DHW
Set Point
>53
OFF
Aux
ON
T3:Temperature Tank Top
T5: Temperature Extra (Room)
Cooling
Type 1
Cooling temperature set point 20°C
Note:
If DHW temperature is greater than Auto set point (>53°C)
then HP OFF when Cool satisfied
If cooling demand during this time then HP start at 65°C set point
CAUTION:
DHW temperature could be hot 60°C
DHW AUTO mode set point of 53°C
Ta
nk T
°C
T Extr
a Temper
atur
e °
C
25
21
20
DHW
Set Point
Aux
OFF
65
ON
53
19
HP Operation
<53
ON
>53
OFF
T3:Temperature Tank Top
T5: Temperature Extra (Room)
Cooling
Type 2
Cooling temperature set point 20°C
Note:
If DHW temperature is greater than Auto set point (>53°C)
then HP OFF when Cool satisfied
If cooling demand during this time then HP start at 65°C set point
CAUTION:
DHW temperature could be hot 60°C
DHW AUTO mode set point of 53°C