Table of Contents
8.2.4 To connect the water piping for domestic hot water
EPRA14~18DAV3+W1 + ETVH16SU18+23EA6V
Daikin Altherma 3 H HT F
4P644738-1 – 2021.02
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.
a
e
c
a Pressure reducing valve/pressure relief valve combination. Water inlet and water
outlet 22 mm connection, discharge piping connection 15 mm
b Adaptor 22 mm×3/4" Female BSP
c T-piece 22 mm×22 mm×22 mm
8
Piping installation
|
d
b
e
Installer reference guide
93
Table of Contents
