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3 Operation

Operation manual

6

08S23DAV

Daikin Altherma – Low temperature split

4P499572-1B – 2017.12

3.4.2

Scheduled mode

In scheduled mode the DHW tank produces hot water corresponding
to a schedule. The best time to allow the tank to produce hot water is
at night, because the space heating demand is lower.

Example: 

t

60°C

00:00

07:00

50°C

15°C

40°C

14:00

21:00

1

2

3

4

5

Tt

T

t

DHW tank temperature

t

Time

3.4.3

Sch reheat mode

In  scheduled  +  reheat  mode,  the  domestic  hot  water  control  is  the
same  as  in  scheduled  mode.  However,  when  the  DHW  tank
temperature drops below a preset value (=reheat tank temperature –
hysteresis  value;  example:  35°C),  the  DHW  tank  heats  up  until  it
reaches  the  reheat  set  point  (example:  45°C).  This  ensures  that  a
minimum amount of hot water is available at all times.

Example: 

t

Tt

60°C

00:00

07:00

50°C

45°C

15°C

14:00

21:00

35°C

1

2

4

5

3

T

t

DHW tank temperature

t

Time

3.4.4

Using DHW powerful operation

About powerful operation

Powerful  operation  allows  the  domestic  hot  water  to  be  heated  by
the anti-legionella heater. Use this mode on days when there is more
hot water usage than usual.

To check if powerful operation is active

If 

 is displayed on the home screen, powerful operation is active.

Activate or deactivate Powerful operation as follows:

1

Go to [5.1]: Tank > Powerful operation

2

Turn powerful operation Off or On.

Usage example: You immediately need more hot water

You are in the following situation:

▪ You already consumed most of your domestic hot water.

▪ You  cannot  wait  for  the  next  scheduled  action  to  heat  up  the

domestic hot water tank.

Then  you  can  activate  powerful  operation.  The  domestic  hot  water
tank will start heating up the water to the Comfort temperature.

INFORMATION

When  powerful  operation  is  active,  the  risk  of  space
heating  and  capacity  shortage  comfort  problems  is
significant.  In  case  of  frequent  domestic  hot  water
operation,  frequent  and  long  space  heating  interruptions
will happen.

3.5

Advanced usage

The  amount  of  information  you  can  read  out  in  the  menu  structure
depends on your user permission level:

▪ User: Standard mode

▪ Advanced user: You can read out more information

3.5.1

To change the user permission level

You can change the user permission level as follows:

1

Go to [B]: User profile.

2

Enter the applicable code for the user permission.

▪ Move the cursor from left to right.

▪ Browse  through  the  list  of  digits  and  change  the

selected digit.

▪ Confirm the pincode and proceed.

User pin code

The User pin code is 

0000

.

Advanced user pin code

The Advanced user pin code is 

1234

. Additional menu items for the

user are now visible.

3.6

Schedule screen: Example

This  example  shows  how  to  set  a  room  temperature  schedule  in
heating mode for the main zone.

INFORMATION

The procedures to program other schedules are similar.

To program the schedule

Example: 

You want to program the following schedule:

Mon

Sat

Wed

Fri

Thu

Tue

Sun

User defined 1

Prerequisite: 

The  room  temperature  schedule  is  only  available  if

room  thermostat  control  is  active.  If  leaving  water  temperature
control is active, you can program the main zone schedule instead.

1

Go to the schedule.

2

Clear the contents of the schedule (optional).

3

Program the schedule for Monday.

4

Copy the schedule to the other weekdays.

5

Program the schedule for Saturday and copy it to Sunday.

6

Give the schedule a name.

To go to the schedule:

1

Go to [1.1]: Room > Schedule.

2

Set scheduling to Yes.

3

Go to [1.2]: Room > Heating schedule.

Summary of Contents for Altherma EHVH04S23DAV

Page 1: ...Operation manual Daikin Altherma Low temperature split English Operation manual Daikin Altherma Low temperature split EHVH04S23DAV G EHVH08S23DAV G...

Page 2: ...o inform you about the settings that he used to configure your system Check if he has filled in the installer settings tables If not request him to do so Keep the documentation for future reference Ta...

Page 3: ...e screen darkens Pressing any button or rotating any dial awakens the display The time of non interaction differs depending on the user permission level User or Advanced user 15 min Installer 1 h Dial...

Page 4: ...iption Additional zone h3 h1 h2 h1 Heat emitter type Underfloor heating Fancoil unit Radiator h2 Leaving water temperature setpoint h3 Room thermostat type External control Hidden Leaving water temper...

Page 5: ...setting Possible actions on this screen Confirm changes and proceed 3 3 Space heating control 3 3 1 Setting the space operation mode About space operation modes This unit is a heating only model The...

Page 6: ...operation The domestic hot water tank will start heating up the water to the Comfort temperature INFORMATION When powerful operation is active the risk of space heating and capacity shortage comfort...

Page 7: ...py the schedule to the other weekdays 1 Select Monday Mon Sat Wed Fri Thu Tue Sun User defined 1 2 Select Copy Edit Copy Result C is displayed next to the copied day 3 Select Tuesday Mon Sat Wed Fri T...

Page 8: ...Low temperature split 4P499572 1B 2017 12 1 Select the name of the current schedule Mon Sat Wed Fri Thu Tue Sun User defined 1 2 Select the Rename option Delete Rename 3 Browse through the character...

Page 9: ...day Activation From Till 7 4 Quiet Activation Schedule 7 5 Electricity price High Medium Low Schedule 7 2 Time date Hours Minutes Year Month Day Daylight savings time Format 1 4 Antifrost Activation R...

Page 10: ...ssary Example In the morning and evening 5 Maintenance and service 5 1 Overview Maintenance and service The installer has to perform a yearly maintenance You can find the contact helpdesk number via t...

Page 11: ...tpoint lower tank temperature during the day The desired DHW tank temperature is too low 6 4 Symptom Heat pump failure When the heat pump fails to operate the optional backup heater and anti legionell...

Page 12: ...4P499572 1B 2017 12 Copyright 2017 Daikin 4P499572 1 B 00000007...

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