Daikin Altherma 3 GEO, Installer'S Reference Manual

Page: 74 / 252

7 | Piping installation
Installer reference guide
74
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
2 Mount the expansion vessel to the wall.
1 2
3 Fit the T-piece (part of the kit) to the domestic hot water cold water IN pipe of
the unit.
4 Connect the pressure reducing valve/pressure relief valve combination (part
of the kit) to the T-piece with a length of copper tube Ø22 mm (field supply).
5 Connect the expansion vessel to the T-piece with a length of copper tube
Ø22 mm (field supply).
6 Connect the pressure reducing valve/pressure relief valve combination to the
water mains inlet.
7 Install the tundish (part of the kit) in a vertical position within a maximum of
600 mm away from the pressure reducing valve/pressure relief valve
combination.
WARNING
Install the tundish away from any electrical device. Possible consequence: Electric
shock or fire.
NOTICE
To ensure a free water flow through the discharge pipe, manually operate the
pressure relief valve by turning its knob left.
8 Connect the 2 tundishes (1 from the pressure relief valve of the domestic hot
water tank, and 1 from the pressure relief valve of the domestic hot water
tank kit) to an appropriate drain according to the applicable legislation. The
following example shows discharge below fixed grating (Building Regulation
G3 section 3.61 gives alternative points of discharge):