Daikin Altherma EHVZ04S18DA6V, Installation Manual

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4 Installation
Installation manual
10
08S18+23DA
Daikin Altherma – Low temperature split
4P495245-1B – 2017.12
NOTICE
This unit is designed for operation on 2 temperature zones:
▪ underfloor heating in the main zone , this is the zone
with the lowest water temperature ,
▪ radiators in the additional zone , this is the zone with
the highest water temperature .
1 Install the shut-off valves on the space heating water pipes.
2 Screw the indoor unit nuts on the shut-off valve.
3 Connect the domestic hot water in and out pipes to the indoor
unit.
c d a b
f e
a Space heating additional zone water out
b Space heating additional zone water in
c Domestic hot water out
d Domestic cold water in (cold water supply)
e Space heating main zone water out
f Space heating main zone water in
NOTICE
It is recommended to install shut-off valves to domestic
cold water in and domestic hot water out connections.
These shut-off valves are field supplied.
NOTICE
Overpressure bypass valve (delivered as accessory). We
recommend to install the overpressure bypass valve in the
space heating water circuit.
Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
"3.2.1 To check
the water volume and flow rate" on page 7 and "6.2.1 To
check the minimum flow rate" on page 23 .
NOTICE
If you install EHVZ models 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
a Bypass
Configuration. Set field setting [7-02]=0 (Number of zones
= Single zone).
NOTICE
A pressure relief valve (field supply) with an opening
pressure of maximum 10 bar 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 "4.1.1 To open the
indoor unit" on page 7 .
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 connect the drain hose to the drain
Water coming from the pressure relief valve is collected in the drain
pan. The drain pan is connected to a drain hose inside the unit. You
must connect the drain hose to an appropriate drain according to the
applicable legislation. You can route the drain hose through the left
or right side panel.
Prerequisite: The user interface panel and front panel have been
removed.
1 Remove one of the side panels.
2 Cut out the rubber grommet.
3 Pull the drain hose through the hole.
4 Reattach the side panel. Ensure the water can flow through the
drain tube.
It is recommended to use a tundish to collect the water.
Option 1: Through the left side panel
1
3×
T25
3
2