To Fill The Domestic Hot Water Tank; To Insulate The Water Piping; Electrical Installation; About Electrical Compliance - Daikin ETVH-D9WG Installation Manual

If...
The system does NOT contain a
domestic hot water tank
(a)
Propylene glycol, including the necessary inhibitors, classified as
Category III according to EN1717.
Required concentration of glycol
The required concentration of glycol depends on the lowest
expected outdoor temperature, and on whether you want to protect
the system from bursting or from freezing. To prevent the system
from freezing, more glycol is required.
Add glycol according to the table below.
Lowest expected Prevent from
outdoor bursting
temperature
–5°C 10%
–10°C 15%
–15°C 20%
–20°C 25%
–25°C 30%
–30°C 35%
INFORMATION
▪ Protection against bursting: the glycol will prevent the
piping from bursting, but NOT the liquid inside the
piping from freezing.
▪ Protection against freezing: the glycol will prevent the
liquid inside the piping from freezing.
NOTICE
▪ The required concentration might differ depending on
the type of glycol. ALWAYS compare the requirements
from the table above with the specifications provided by
the glycol manufacturer. If necessary, meet the
requirements set by the glycol manufacturer.
▪ The added concentration of glycol should NEVER
exceed 35%.
▪ If the liquid in the system is frozen, the pump will NOT
be able to start. Mind that if you only prevent the
system from bursting, the liquid inside might still freeze.
▪ When water is at standstill inside the system, the
system is very likely to freeze and get damaged.
Glycol and the maximum allowed water volume
Adding glycol to the water circuit reduces the maximum allowed
water volume of the system. For more information, see the installer
reference guide (topic "To check the water volume and flow rate").
Glycol setting
NOTICE
If glycol is present in the system, setting [E-0D] must be
set to 1. If the glycol setting is NOT set correctly, the liquid
inside the piping can freeze.
Freeze protection by freeze protection valves
About freeze protection valves
When no glycol is added to the water, you can use freeze protection
valves to drain the water from the system before it can freeze.
▪ Install freeze protection valves (field supply) at all lowest points of
the field piping.
▪ Normally closed valves (located indoors near the piping entry/exit
points) can prevent that all water from indoor piping is drained
when the freeze protection valves open.
ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P586454-1B – 2020.01
Then...
You can use either propylene
(a)
glycol or ethylene glycol
Prevent from
freezing
15%
25%
35%
—
—
—
NOTICE
When freeze protection valves are installed, do NOT select
a minimum cooling setpoint lower than 7°C (7°C=default).
If lower, freeze protection valves can open during cooling
operation.
For more information, see the installer reference guide.
4.2.5

To fill the domestic hot water tank

1 Open every hot water tap in turn to purge air from the system
pipe work.
2 Open the cold water supply valve.
3 Close all water taps after all air is purged.
4 Check for water leaks.
4.2.6

To insulate the water piping

The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
Outdoor water piping insulation
See the installation manual of the outdoor unit, or the installer
reference guide.
5

Electrical installation

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
5.1

About electrical compliance

Only for the backup heater of the indoor unit
See "5.3.2 To connect the backup heater power
5.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item
M4 (X1M, X2M, X5M)
M4 (earth)
5.3

Connections to the indoor unit

Item
Power supply (main) See "5.3.1 To connect the main power
supply" [ 4 11].
Power supply (backup See "5.3.2 To connect the backup heater
supply" [ 4 12].
heater) power
Shut-off valve See "5.3.3 To connect the shut-off
valve" [ 4 13].
5 Electrical installation
supply" [ 4 12].
Tightening torque (N•m)
1.2~1.5
Description
Installation manual
9