Daikin Altherma EHY2KOMB28AA Installation And Operation Manual page 27

Parameter Setting
Maximum fan rpm
Legionella protection (only when
external hot water tank is connected)
Set point space heating (flow
temperature) during heating external
domestic hot water tank
. Comfort temperature
. Waiting time after a space heating
demand from a thermostat.
Waiting time after a domestic hot water
demand before a space heating
demand is answered.
. Number of eco days.
Anti-cycling period during space
heating operation
. Reference value for domestic hot water 24-30-36
Summer mode
Heating curve coefficient
Maximum space heating power setting
The maximum space heating power setting ( ) is factory set to 70%.
If more or less power is required, you can change the fan rpm. The
table below shows the relationship between the fan rpm and the
appliance power. It is strongly recommended NOT to modify this
setting.
Desired power (kW)
EHY2KOMB28AA EHY2KOMB32AA
23.1 26.6
20.1 22.4
17.4 19.2
14.6 16.0
11.8 12.8
7.7 8.0
A minimum flow rate must be guaranteed so that the boiler does not
go in high temperature error. This can be maintained by opening the
radiator valves if there are any closed, or adding an appropriate by-
pass way in between space heating outlet and space heating inlet of
the boiler if thermostatic valves are fitted to all radiators.
EHY2KOMB28+32AA
Daikin Altherma hybrid monobloc – Gas boiler module
4P538953-1 – 2018.06
Range
45~50
0~2
60°C~90°C
0°C / 40°C~65°C
0 min~15 min
0 min~15 min
1~10
0 min~15 min
1~3
0
Minimum required flow rate values for corresponding set powers are
given in the table below.
Minimum flow rate
2.6
4.0
Setting on service
8.5
display (% of max.
12.5
rpm)
Note that for the gas boiler the power during burning is increased
85
slowly and is reduced as soon as the supply temperature is reached.
70
60 Frost protection function
50
The boiler is equipped with an internal frost protection function that
40
automatically operates when necessary, even if the boiler is turned
off. If the heat exchanger temperature drops too low, the burner will
25
switch on until the temperature is sufficiently high again. When frost
protection is active, is displayed on the service display.
Default Description
settings
EHY2KOMB28 Use this parameter to set the maximum
AA: 48 fan rpm. It is recommended not to
modify this setting.
EHY2KOMB32
AA: 50
0 ▪ 0=Not active
▪ 1=Active 1 time per week
▪ 2=Active 1 time per day
85°C Do NOT modify this setting on the
boiler. Use the user interface instead.
0°C Temperature used for eco/comfort
function. When the value is 0°C, the
eco/comfort temperature is the same
as the domestic hot water setpoint.
Otherwise, the eco/comfort
temperature is between 40°C and
65°C.
0 min Changing this setting has no effect on
the operation of the unit.
0 min Amount of time the boiler waits before
answering a space heating demand
after a domestic hot water demand.
3 Number of eco days.
5 min Minimal switch-off time in space
heating operation. It is recommended
not to modify this setting.
36 ▪ 24: Not applicable.
▪ 30: Only for EHY2KOMB28AA
▪ 36: Only for EHY2KOMB32AA
0 ▪ 0=Summer mode deactivated
▪ 1=Summer mode to be activated
with button (code on display=Su)
▪ 2=Summer mode to be activated
with button (code on display=So)
▪ 3=Summer mode to be activated
with button (code on display=Et)
0 Not applicable
Set power (kW)
(l/min)
Installation and operation manual
7 Configuration
5.4 kW
8.5 kW
17.8 kW
26.2 kW
27