To Connect The Recirculation Piping; To Fill The Water Circuit; To Fill The Domestic Hot Water Tank; To Insulate The Water Piping - Daikin EHVZ08S18DA6V7 Installation Manual

NOTICE
If you install this unit as a single-zone application, then:
Setup. Install a bypass between the space heating water
inlet and outlet of the additional zone (=direct zone). Do
NOT interrupt the water flow by closing the shut-off valves.
a Bypass
Configuration. Set field setting [7-02]=0 (Number
zones = Single zone).
NOTICE
Install air purge valves at all local high points.
NOTICE
A pressure relief valve (field supply) with an opening
pressure of maximum 10 bar (=1 MPa) must be installed
on the domestic cold water inlet connection in accordance
with the applicable legislation.
4.4.2

To connect the recirculation piping

Prerequisite: Only required if you need recirculation in your system.
1 Remove the top panel from the unit, see
unit" [ 4 7].
indoor
2 Cut out the rubber grommet on top of the unit, and remove the
stop. The recirculation connector is placed below the hole.
3 Route the recirculation piping through the grommet and connect
it to the recirculation connector.
4 Reattach the top panel.
4.4.3

To fill the water circuit

To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
INFORMATION
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.
4.4.4

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.
EHVZ04+08S18+23DA6V+9W7
Daikin Altherma 3 R F
4P618950-1 – 2020.03
a
of
"4.1.1 To open the
5 Manually operate the field-installed pressure relief valve to
ensure a free water flow through the discharge pipe.
4.4.5

To insulate the water piping

The piping in the complete water circuit MUST be insulated to
prevent condensation during defrost operation and reduction of the
heating capacity.
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
4.5

Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4.5.1

About electrical compliance

Only for the backup heater of the indoor unit
See "4.5.4 To connect the backup heater power
4.5.2 To connect the electrical wiring to the
indoor unit
1 To open the indoor unit, see
unit" [ 4 7].
2 The wiring enters the unit from the top:
d b+c a
a, b, c Field wiring (see table below)
d Factory-mounted cable for power supply of backup heater
3 Routing of the wiring inside the unit should be as follows. Fix
the cable to the cable rail using cable ties:
4×
4 Installation
supply" [ 4 13].
"4.1.1 To open the indoor
b+c
a
Installation manual
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