Advanced Configuration/Optimization - Daikin Altherma 08CA Installer's Reference Manual

Hybrid heat pump

Table of Contents

INFORMATION

When leaving water temperature modulation is enabled,

the weather‑dependent curve needs to be set to a higher

position than [8-06] plus the minimum leaving water

temperature setpoint required to reach a stable condition

on the comfort setpoint for the room. To increase

efficiency, modulation can lower the leaving water setpoint.

By setting the weather‑dependent curve to a higher

position, it cannot drop below the minimum setpoint. Refer

to the illustration below.

T t

+[8-06]

−[8-06]

Weather-dependent curve

Minimum leaving water temperature setpoint required to

reach a stable condition on the comfort setpoint for the

room.

Leaving water temperature: Emitter type

Only applicable in case of room thermostat control. Depending on

the system water volume and the heat emitters type, the heat up or

cool down of a space can take longer. This setting can compensate

for a slow or a quick heating/cooling system during the heat up/cool

down cycle.

Note: The setting of the emitter type will influence the maximum

modulation of the desired leaving water temperature and the

possibility for usage of the automatic cooling/heating changeover

based on the indoor ambient temperature.

Therefore it is important to set this correctly.

Code

[A.3.1.1.7]

[9‑0B]

Emitter type:

Reaction time of the system:

▪ Quick

water volume, fan coils, or radiators.

▪ Slow Example: Large water volume,

floor heating loops.

Quick heat up function

Only applicable in case of room thermostat control. The function will

start up the gas boiler when the actual room temperature is 3°C

lower than the desired room temperature. The large boiler capacity

can boost up the room temperature quickly to the desired

temperature. This can be useful after a long period of absence or

after a break-down of the system. During the quick heat up function,

the setpoint of the gas boiler will be the maximum heating setpoint:

[9‑00].

Code

N/A

[C‑0A]

Indoor quick heat up function

▪ 0 (default): OFF.

▪ 1: On.

Domestic hot water control

Only applicable in case an optional domestic hot water tank is

installed.

This is always applicable for Switzerland.

EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +

EHYKOMB33AA

Daikin Altherma hybrid heat pump

4P355634-1C – 2018.06

T a

Description

(default)

Example:

Small

Description

Configuring the desired tank temperature

The domestic hot water can be prepared in 3 different ways. They

differ from each other by the way the desired tank temperature is set

and how the unit acts upon it.

Code

[A.4.1]

[6-0D]

Domestic hot water Type:

▪ 0 (Reheat only): Only reheat operation

is allowed.

▪ 1 (Reheat + sched.): The domestic hot

water tank is heated according to a

schedule and between the scheduled

heatup cycles, reheat operation is

allowed.

▪ 2

domestic hot water tank can ONLY be

heated according to a schedule.

See

"Domestic hot water control: advanced" on page 70

details.

INFORMATION

If a third‑party tank is present in the system ([E‑07]=6), it is

recommended to set [6‑0D] to "0" (i.e. Reheat only).

Maximum DHW temperature setpoint

The maximum temperature that users can select for the domestic

hot water. You can use this setting to limit the temperatures at the

hot water taps.

INFORMATION

During disinfection of the domestic hot water tank, the

DHW temperature can exceed this maximum temperature.

INFORMATION

Limit the maximum hot water temperature according to the

applicable legislation.

Code

[A.4.5]

[6‑0E]

Maximum setpoint

The maximum temperature that users

can select for the domestic hot water.

You can use this setting to limit the

temperature at the hot water taps.

The maximum temperature is NOT

applicable during disinfection function.

See disinfection function.

In case of [E‑06]=1 (tank installed):

▪ [E‑07]≠6: 40~75°C (default: 75°C)

▪ [E‑07]=6: 40~60°C (default: 60°C)

In case of [E‑06]=0 (no tank installed):

▪ 40~65°C (default: 65°C)

Contact/helpdesk number

Code

[6.3.2]

N/A

Number that users can call in case of

problems.

8.1.3