Daikin Altherma 3 H HT F Installation Manual page 11

b Adaptor 22 mm×3/4" Female BSP
c T-piece 22 mm×22 mm×22 mm
d Expansion vessel of 18 l – 3/4" Male BSP
e Tundish 15 mm inlet, 22 mm outlet
1 Pre-assemble the adaptor and expansion vessel so that the
expansion vessel is ready for installation.
2 Mount the expansion vessel to the wall.
1
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 Using the accessory brass compression coupler (see
remove the accessories from the domestic hot water tank
kit" [ 4 6]), connect the accessory pipe (see
accessories from the indoor
located at the back of the unit. This pipe starts at the pressure
relief valve of the domestic hot water tank.
9 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):
ETVH16SU18+23EA6V
Daikin Altherma 3 H HT F
4P644729-1 – 2021.02
2
"3.2.1 To
"3.1.1 To remove the
unit" [ 4 5]) to the pipe connection
a
D1
≤600 mm
b
≥300 mm
D2
a Safety device (pressure and temperature relief valve of
domestic hot water tank; pressure relief valve of domestic
hot water tank kit)
b Tundish
c Fixed grating
d Trapped gully
D1 Metal discharge pipe from safety device to tundish
D2 Discharge pipe from tundish, with continuous fall. See
Building Regulation G3 section 3.56, Table 03 and
worked example.
10 After completing the installation, the installer has to fill out the
warning label on the tank with indelible ink. The warning label
can be found on the unit top plate.
WARNING
The discharge pipes from the pressure relief valves MUST
terminate in a safe and visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Discharge piping, tundish, drain valves, etc. must be
positioned away from any electrical components.
▪ The discharge pipe away from the tundish must
terminate in a safe, visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Do not install any valves between the domestic hot
water tank and relief valves/expansion vessel.
▪ Do not install shut-off valves between the expansion
relief valve and the domestic hot water tank.
5 Piping installation
c
d
Installation manual
11