4 Operation
User reference guide
10
EHBH/X04~16CB + EHVH/X04~16S18+26CB
Daikin Altherma – Low temperature split
4P384964-1 – 2015.01
Additional zone:
User profile = Basic
User profile = Detailed
15:20
45°C
Desired temperature
LWT add
Mon
15:20
45°C
17:30
Mon
Mon
LWT add
Desired temperature
To read out the desired leaving water temperature (main +
additional)
Go to the leaving water temperature home page (LWT main or LWT
add).
To adjust/overrule the leaving water temperature (main)(NOT
linked to room thermostat control)
INFORMATION
Adjusting the leaving water temperature is permanent
unless the leaving water temperature is according to a
schedule. In that case the overruling is valid until the next
scheduled action.
1
Go to [7.4.2]:
> User settings > Preset values > LWT main.
2
Press
or
to adjust/overrule.
Example:
35°C 37°C
To adjust the leaving water temperature (additional)
1
Go to the additional leaving water temperature home page
(LWT add).
2
Press
or
to adjust.
Example:
45°C 47°C
INFORMATION
In case of weather dependency, an offset value can be
modified.
4.5
Domestic hot water control
4.5.1
About domestic hot water control
Depending on the DHW tank mode (installer setting), you use a
different domestic hot water control:
▪ Reheat mode
▪ Scheduled mode
▪ Sch reheat mode
CAUTION
The booster heater permission schedule is used to restrict
or allow booster heater operation based on a weekly
program. Advice: In order to avoid unsuccessful
disinfection function, at least allow the booster heater (by
the weekly program) for minimum 4 hours starting from the
scheduled start-up of disinfection. If the booster heater is
restricted during disinfection, this function will NOT be
successful and the applicable warning AH will be
generated.
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Type > Reheat or
Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
To determine which DHW tank mode you are using (method 1)
Check the installer settings table filled in by the installer.
To determine which DHW tank mode you are using (method 2)
Prerequisite:
User profile = Detailed.
1
Go to the DHW tank temperature home page (Tank).
2
Check which icons are displayed:
If… is displayed
Then the DHW tank mode =…
Reheat mode
Scheduled mode
Sch reheat mode
4.5.2
Reheat mode
In reheat mode ( ),the DHW tank continuously heats up to the
temperature shown on the DHW tank temperature home page
(example: 50°C).
t
60°C
00:00
07:00
50°C
15°C
40°C
14:00
21:00
1
2
3
4
Tt
T
t
DHW tank temperature
t
Time
INFORMATION
There is a risk of space heating (cooling) capacity
shortage/comfort problem (in case of frequent domestic hot
water operation, frequent and long space heating/cooling
interruption will happen) when selecting [6‑0D]=0 ([A.4.1]
Domestic hot water Type=Reheat only) in case of a
domestic hot water tank without an internal booster heater.
INFORMATION
When the DHW tank mode is reheat, the risk for capacity
shortage and comfort problem is significant. In case of
frequent reheat operation, space heating/cooling function
is regularly interrupted.
Summary of Contents for EHBH08CB
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