Daikin ALTHERMA HT Service Manual page 76

Outline of Control (Indoor Unit)
2. Storage operation
64
Domestic hot water lower limit temperature
F
Domestic hot water upper limit temperature (maximum possible storage
G
temperature) [b-03]
Domestic hot water reheat minimum temperature [b-00]
H
Domestic hot water reheat maximum temperature [b-01]
J
Simultaneous demand
M
ONLY space heating request
N
ON
ON
OFF
OFF
When requesting space heating and domestic water heating (storage) at the same time, this
involves that the storage function is active and the start timer is reached (setting 1) during
space heating operation. The 3-way valve will switch over to domestic water heating
operation. Now domestic water will be produced till set point is reached or according to the
running timer (setting [d-01]). The 3-way valve will switch back to space heating mode for the
interval period (setting [d-02]). After this interval the 3-way valve will go back to domestic
water mode. This will continue till set point is reached. At that moment, simultaneous request
is finished and the system goes back to space heating mode.
D
C
B
A
M O P
1
Operation
A
Space heating
Domestic water heating
Domestic hot water storage thermo-on request
B
Domestic hot water tank temperature
C
Leaving water thermo-on request
D
Domestic hot water lower limit temperature
F
Domestic hot water upper limit temperature (maximum possible storage temperature)
G
[b-03]
Simultaneous demand
M
ONLY space heating request
N
Start of interval period
O
Stop of interval period
P
ON
ON
OFF
OFF
Maximum operation time for 1 cycle of domestic water heating (initial 30 minutes [d-01])
1
Interval minimum stop time for domestic water heating (initial 15 minutes [d-02])
2
Maximum operation time for domestic water heating (initial 30 minutes [d-01])
3
ON
OFF
G
75°C
F
35°C
ON
OFF
3
N
2
ESIE09-08B
Function