7 Installation
Installer reference guide
39
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1D – 2018.07
NOTICE
To avoid damage to the surroundings in case of water
leakage, it is recommended to close the domestic cold
water inlet shut‑off valves during periods of absence.
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 must be installed on the
domestic cold water inlet connection in accordance with
the applicable legislation.
NOTICE
▪ A drain device and pressure relief device must be
installed on the cold water inlet connection of the
domestic hot water cylinder.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.
▪ It is recommended to install a pressure reducing valve
on the cold water inlet in accordance with the
applicable legislation.
▪ An expansion vessel should be installed on the cold
water inlet in accordance with the applicable legislation.
▪ It is recommended to install the pressure relief valve on
a higher position than the top of the domestic hot water
tank. Heating of the domestic hot water tank causes
water to expand and without pressure relief valve the
water pressure inside the tank can rise above the tank
design pressure. Also the field installation (piping,
tapping points, etc.) connected to the tank is subjected
to this high pressure. To prevent this, a pressure relief
valve needs to be installed. The overpressure
prevention depends on the correct operation of the field
installed pressure relief valve. If this is NOT working
correctly, overpressure will deform the tank and water
leakage may occur. To confirm good operation, regular
maintenance is required.
7.8.4
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
In case of a unit with a tank capacity of 180 l, remove the
expansion vessel.
4
Remove the top insulation.
5
Cut out part (c) from the top insulation.
Tank capacity
Cut out position
180 l
Left OR right
Tank capacity
Cut out position
260 l
Backside
6
Connect the recirculation piping to the recirculation connection
(b) and route the piping through the hole at the backside of the
unit (a).
260 l
180 l
b
a
c
A
A
180°
a
Piping intake hole
b
Recirculation connection
c
Cut-out location
7
Reattach the top insulation, expansion vessel (in case of a unit
with a tank capacity of 180 l), and casing.
7.8.5
To connect the pressure relief valve to the
drain
The blow out of the pressure relief valve is coming out of the
backside of the unit.
a
b
a
Pressure relief blow-out
b
Drain outlet (only for EHVX)
The blow out should be connected to an appropriate drain according
to the applicable legislation. It is recommended to use a tundish.
7.8.6
To fill the water circuit
1
Connect the water supply hose to the fill valve.
Содержание Altherma EHVH/X04S18CB
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