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4 Installation
Installation manual
7
EHVZ04~16S18CB3V
Daikin Altherma – Low temperature split
4P401672-1D – 2017.04
NOTICE
This unit is designed for operation on 2 temperature zones:
▪ underfloor heating in the
main zone
(water
temperature 35°C), this is the zone with the
lowest
water temperature
,
▪ radiators in the
additional zone
(water temperature
45°C), this is the zone with the
highest water
temperature
.
1
Install the shut-off valves on the space heating water pipes.
f
a
c
e
d
b
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.
2
Screw the indoor unit nuts on the shut-off valves.
3
Connect the domestic hot water in and out pipes to the indoor
unit.
NOTICE
Install air purge valves at all local high points.
4.4.2
To connect the recirculation piping
Prerequisite:
Only required if you need recirculation in your system.
1
Loosen and remove the 4 screws that fix the top panel.
2
Remove the top panel from the unit.
4×
3
Disconnect and remove the expansion vessel of the top
insulation.
4
Remove the top insulation.
5
Cut out part (c) on the left or right side from the top insulation.
Tank capacity
Cut out position
180 l
Left OR right
6
Connect the recirculation piping to the recirculation connection
(b) and route the piping through the hole at the backside of the
unit (a).
b
a
c
a
Piping intake hole
b
Recirculation connection
c
Cut-out location
7
Reattach the top insulation, expansion vessel, and casing.
4.4.3
To fill the water circuit
1
Connect the water supply hose to the fill valve.
a
b
INFORMATION
Please fill with water through connection a OR b. Both
circuits (main and additional) will be filled.
2
Open the fill valve.
3
Make sure that the automatic air purge valve is open (at least 2
turns).
4
Fill the circuit with water until the manometer indicates a
pressure of ±2.0 bar.
5
Purge as much air as possible from the water circuit.
6
Close the fill valve.
7
Disconnect the water supply hose from the fill valve.
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.
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.
Summary of Contents for Altherma EHVZ04S18CB
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