Daikin EHVH08SU26CB6W [12/108] Possible combinations of indoor unit and outdoor unit
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Daikin EHVH08SU26CB6W [12/108] Possible combinations of indoor unit and outdoor unit

Daikin EHVH08SU26CB6W [12/108] Possible combinations of indoor unit and outdoor unit
5 Application guidelines
Installer reference guide
12
ERLQ004~008CA + EHVH04+08SU18+26CB6W
Daikin Altherma – Low temperature split
4P449978-1 – 2016.06
4.3.3 Possible combinations of indoor unit and outdoor unit
Indoor unit Outdoor unit
ERLQ004CAV3 ERLQ006CAV3 ERLQ008CAV3
EHVH04SU18CB6W O — —
EHVH08SU18CB6W — O O
EHVH08SU26CB6W — O O
5 Application guidelines
5.1 Overview: Application guidelines
The purpose of the application guidelines is to give a glance of the
possibilities of the Daikin heatpump system.
NOTICE
▪ The illustrations in the application guidelines are meant
for reference only, and are NOT to be used as detailed
hydraulic diagrams. The detailed hydraulic
dimensioning and balancing are NOT shown, and are
the responsibility of the installer.
▪ For more information about the configuration settings to
optimize heatpump operation, see "8Configuration"on
page48.
This chapter contains application guidelines for:
▪ Setting up the space heating system
▪ Setting up an auxiliary heat source for space heating
▪ Setting up the domestic hot water tank
▪ Setting up the energy metering
▪ Setting up the power consumption
▪ Setting up an external temperature sensor
5.2 Setting up the space heating
system
The Daikin heat pump system supplies leaving water to heat
emitters in one or more rooms.
Because the system offers a wide flexibility to control the
temperature in each room, you need to answer the following
questions first:
▪ How many rooms are heated by the Daikin heatpump system?
▪ Which heat emitter types are used in each room and what is their
design leaving water temperature?
Once the space heating requirements are clear, Daikin recommends
to follow the setup guidelines below.
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
INFORMATION
In case an external room thermostat is used and room frost
protection needs to be guaranteed in all conditions, then
you have to set auto emergency [A.6.C] to 1.
5.2.1 Single room
Underfloor heating or radiators – Wired room
thermostat
Setup
B
A
a
A Main leaving water temperature zone
B One single room
a User interface used as room thermostat
▪ The underfloor heating or radiators are directly connected to the
indoor unit.
▪ The room temperature is controlled by the user interface, which is
used as room thermostat. Possible installations:
▪ User interface installed in the room and used as room
thermostat
▪ User interface installed at the indoor unit and used for control
close to the indoor unit + user interface installed in the room
and used as room thermostat
Configuration
Setting Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
Benefits
▪ Cost effective. You do NOT need an additional external room
thermostat.
▪ Highest comfort and efficiency. The smart room thermostat
functionality can decrease or increase the desired leaving water
temperature based on the actual room temperature (modulation).
This results in:
▪ Stable room temperature matching the desired temperature
(higher comfort)
▪ Less ON/OFF cycles (more quiet, higher comfort and higher
efficiency)
▪ Lowest possible leaving water temperature (higher efficiency)

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